assert

package
v1.8.10 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Dec 14, 2022 License: MIT Imports: 22 Imported by: 0

Documentation

Overview

Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.

Example Usage

The following is a complete example using assert in a standard test function: 

import (
  "testing"
  "github.com/gozelle/testify/assert"
)

func TestSomething(t *testing.T) {

  var a string = "Hello"
  var b string = "Hello"

  assert.Equal(t, a, b, "The two words should be the same.")

}

if you assert many times, use the format below: 

import (
  "testing"
  "github.com/gozelle/testify/assert"
)

func TestSomething(t *testing.T) {
  assert := assert.New(t)

  var a string = "Hello"
  var b string = "Hello"

  assert.Equal(a, b, "The two words should be the same.")
}

Assertions

Assertions allow you to easily write test code, and are global funcs in the `assert` package. All assertion functions take, as the first argument, the `*testing.T` object provided by the testing framework. This allows the assertion funcs to write the failings and other details to the correct place.

Every assertion function also takes an optional string message as the final argument, allowing custom error messages to be appended to the message the assertion method outputs.

Index

Examples

Constants

This section is empty.

Variables

View Source 
var AnError = errors.New("assert.AnError general error for testing")

AnError is an error instance useful for testing. If the code does not care about error specifics, and only needs to return the error for example, this error should be used to make the test code more readable.

Functions

func CallerInfo 

func CallerInfo() []string

CallerInfo returns an array of strings containing the file and line number of each stack frame leading from the current test to the assert call that failed.

func Condition 

func Condition(t TestingT, comp Comparison, msgAndArgs ...interface{}) bool

Condition uses a Comparison to assert a complex condition.

func Conditionf 

func Conditionf(t TestingT, comp Comparison, msg string, args ...interface{}) bool

Conditionf uses a Comparison to assert a complex condition.

func Contains 

func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool

Contains asserts that the specified string, list(array, slice...) or map contains the specified substring or element. 

assert.Contains(t, "Hello World", "World")
assert.Contains(t, ["Hello", "World"], "World")
assert.Contains(t, {"Hello": "World"}, "Hello")

func Containsf 

func Containsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool

Containsf asserts that the specified string, list(array, slice...) or map contains the specified substring or element. 

assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")

func DirExists 

func DirExists(t TestingT, path string, msgAndArgs ...interface{}) bool

DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func DirExistsf 

func DirExistsf(t TestingT, path string, msg string, args ...interface{}) bool

DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func ElementsMatch 

func ElementsMatch(t TestingT, listA, listB interface{}, msgAndArgs ...interface{}) (ok bool)

ElementsMatch asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

assert.ElementsMatch(t, [1, 3, 2, 3], [1, 3, 3, 2])

func ElementsMatchf 

func ElementsMatchf(t TestingT, listA interface{}, listB interface{}, msg string, args ...interface{}) bool

ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

assert.ElementsMatchf(t, [1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")

func Empty 

func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0. 

assert.Empty(t, obj)

func Emptyf 

func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool

Emptyf asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0. 

assert.Emptyf(t, obj, "error message %s", "formatted")

func Equal 

func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

Equal asserts that two objects are equal. 

assert.Equal(t, 123, 123)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func EqualError 

func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool

EqualError asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error. 

actualObj, err := SomeFunction()
assert.EqualError(t, err,  expectedErrorString)

func EqualErrorf 

func EqualErrorf(t TestingT, theError error, errString string, msg string, args ...interface{}) bool

EqualErrorf asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error. 

actualObj, err := SomeFunction()
assert.EqualErrorf(t, err,  expectedErrorString, "error message %s", "formatted")

func EqualValues 

func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

EqualValues asserts that two objects are equal or convertable to the same types and equal. 

assert.EqualValues(t, uint32(123), int32(123))

func EqualValuesf 

func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

EqualValuesf asserts that two objects are equal or convertable to the same types and equal. 

assert.EqualValuesf(t, uint32(123), int32(123), "error message %s", "formatted")

func Equalf 

func Equalf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Equalf asserts that two objects are equal. 

assert.Equalf(t, 123, 123, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func Error 

func Error(t TestingT, err error, msgAndArgs ...interface{}) bool

Error asserts that a function returned an error (i.e. not `nil`). 

  actualObj, err := SomeFunction()
  if assert.Error(t, err) {
	   assert.Equal(t, expectedError, err)
  }

func ErrorAs 

func ErrorAs(t TestingT, err error, target interface{}, msgAndArgs ...interface{}) bool

ErrorAs asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value. This is a wrapper for errors.As.

func ErrorAsf 

func ErrorAsf(t TestingT, err error, target interface{}, msg string, args ...interface{}) bool

ErrorAsf asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value. This is a wrapper for errors.As.

func ErrorContains 

func ErrorContains(t TestingT, theError error, contains string, msgAndArgs ...interface{}) bool

ErrorContains asserts that a function returned an error (i.e. not `nil`) and that the error contains the specified substring. 

actualObj, err := SomeFunction()
assert.ErrorContains(t, err,  expectedErrorSubString)

func ErrorContainsf 

func ErrorContainsf(t TestingT, theError error, contains string, msg string, args ...interface{}) bool

ErrorContainsf asserts that a function returned an error (i.e. not `nil`) and that the error contains the specified substring. 

actualObj, err := SomeFunction()
assert.ErrorContainsf(t, err,  expectedErrorSubString, "error message %s", "formatted")

func ErrorIs 

func ErrorIs(t TestingT, err, target error, msgAndArgs ...interface{}) bool

ErrorIs asserts that at least one of the errors in err's chain matches target. This is a wrapper for errors.Is.

func ErrorIsf 

func ErrorIsf(t TestingT, err error, target error, msg string, args ...interface{}) bool

ErrorIsf asserts that at least one of the errors in err's chain matches target. This is a wrapper for errors.Is.

func Errorf 

func Errorf(t TestingT, err error, msg string, args ...interface{}) bool

Errorf asserts that a function returned an error (i.e. not `nil`). 

  actualObj, err := SomeFunction()
  if assert.Errorf(t, err, "error message %s", "formatted") {
	   assert.Equal(t, expectedErrorf, err)
  }

func Eventually 

func Eventually(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Eventually asserts that given condition will be met in waitFor time, periodically checking target function each tick. 

assert.Eventually(t, func() bool { return true; }, time.Second, 10*time.Millisecond)

func Eventuallyf 

func Eventuallyf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Eventuallyf asserts that given condition will be met in waitFor time, periodically checking target function each tick. 

assert.Eventuallyf(t, func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func Exactly 

func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

Exactly asserts that two objects are equal in value and type. 

assert.Exactly(t, int32(123), int64(123))

func Exactlyf 

func Exactlyf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Exactlyf asserts that two objects are equal in value and type. 

assert.Exactlyf(t, int32(123), int64(123), "error message %s", "formatted")

func Fail 

func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool

Fail reports a failure through

func FailNow 

func FailNow(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool

FailNow fails test

func FailNowf 

func FailNowf(t TestingT, failureMessage string, msg string, args ...interface{}) bool

FailNowf fails test

func Failf 

func Failf(t TestingT, failureMessage string, msg string, args ...interface{}) bool

Failf reports a failure through

func False 

func False(t TestingT, value bool, msgAndArgs ...interface{}) bool

False asserts that the specified value is false. 

assert.False(t, myBool)

func Falsef 

func Falsef(t TestingT, value bool, msg string, args ...interface{}) bool

Falsef asserts that the specified value is false. 

assert.Falsef(t, myBool, "error message %s", "formatted")

func FileExists 

func FileExists(t TestingT, path string, msgAndArgs ...interface{}) bool

FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func FileExistsf 

func FileExistsf(t TestingT, path string, msg string, args ...interface{}) bool

FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func Greater 

func Greater(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Greater asserts that the first element is greater than the second 

assert.Greater(t, 2, 1)
assert.Greater(t, float64(2), float64(1))
assert.Greater(t, "b", "a")

func GreaterOrEqual 

func GreaterOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

GreaterOrEqual asserts that the first element is greater than or equal to the second 

assert.GreaterOrEqual(t, 2, 1)
assert.GreaterOrEqual(t, 2, 2)
assert.GreaterOrEqual(t, "b", "a")
assert.GreaterOrEqual(t, "b", "b")

func GreaterOrEqualf 

func GreaterOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

GreaterOrEqualf asserts that the first element is greater than or equal to the second 

assert.GreaterOrEqualf(t, 2, 1, "error message %s", "formatted")
assert.GreaterOrEqualf(t, 2, 2, "error message %s", "formatted")
assert.GreaterOrEqualf(t, "b", "a", "error message %s", "formatted")
assert.GreaterOrEqualf(t, "b", "b", "error message %s", "formatted")

func Greaterf 

func Greaterf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Greaterf asserts that the first element is greater than the second 

assert.Greaterf(t, 2, 1, "error message %s", "formatted")
assert.Greaterf(t, float64(2), float64(1), "error message %s", "formatted")
assert.Greaterf(t, "b", "a", "error message %s", "formatted")

func HTTPBody 

func HTTPBody(handler http.HandlerFunc, method, url string, values url.Values) string

HTTPBody is a helper that returns HTTP body of the response. It returns empty string if building a new request fails.

func HTTPBodyContains 

func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyContains asserts that a specified handler returns a body that contains a string. 

assert.HTTPBodyContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func HTTPBodyContainsf 

func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyContainsf asserts that a specified handler returns a body that contains a string. 

assert.HTTPBodyContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func HTTPBodyNotContains 

func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyNotContains asserts that a specified handler returns a body that does not contain a string. 

assert.HTTPBodyNotContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func HTTPBodyNotContainsf 

func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyNotContainsf asserts that a specified handler returns a body that does not contain a string. 

assert.HTTPBodyNotContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func HTTPError 

func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPError asserts that a specified handler returns an error status code. 

assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func HTTPErrorf 

func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPErrorf asserts that a specified handler returns an error status code. 

assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func HTTPRedirect 

func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPRedirect asserts that a specified handler returns a redirect status code. 

assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func HTTPRedirectf 

func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPRedirectf asserts that a specified handler returns a redirect status code. 

assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func HTTPStatusCode 

func HTTPStatusCode(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, statuscode int, msgAndArgs ...interface{}) bool

HTTPStatusCode asserts that a specified handler returns a specified status code. 

assert.HTTPStatusCode(t, myHandler, "GET", "/notImplemented", nil, 501)

Returns whether the assertion was successful (true) or not (false).

func HTTPStatusCodef 

func HTTPStatusCodef(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, statuscode int, msg string, args ...interface{}) bool

HTTPStatusCodef asserts that a specified handler returns a specified status code. 

assert.HTTPStatusCodef(t, myHandler, "GET", "/notImplemented", nil, 501, "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func HTTPSuccess 

func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPSuccess asserts that a specified handler returns a success status code. 

assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)

Returns whether the assertion was successful (true) or not (false).

func HTTPSuccessf 

func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPSuccessf asserts that a specified handler returns a success status code. 

assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func Implements 

func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool

Implements asserts that an object is implemented by the specified interface. 

assert.Implements(t, (*MyInterface)(nil), new(MyObject))

func Implementsf 

func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool

Implementsf asserts that an object is implemented by the specified interface. 

assert.Implementsf(t, (*MyInterface)(nil), new(MyObject), "error message %s", "formatted")

func InDelta 

func InDelta(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDelta asserts that the two numerals are within delta of each other. 

assert.InDelta(t, math.Pi, 22/7.0, 0.01)

func InDeltaMapValues 

func InDeltaMapValues(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func InDeltaMapValuesf 

func InDeltaMapValuesf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func InDeltaSlice 

func InDeltaSlice(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaSlice is the same as InDelta, except it compares two slices.

func InDeltaSlicef 

func InDeltaSlicef(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaSlicef is the same as InDelta, except it compares two slices.

func InDeltaf 

func InDeltaf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaf asserts that the two numerals are within delta of each other. 

assert.InDeltaf(t, math.Pi, 22/7.0, 0.01, "error message %s", "formatted")

func InEpsilon 

func InEpsilon(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilon asserts that expected and actual have a relative error less than epsilon

func InEpsilonSlice 

func InEpsilonSlice(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.

func InEpsilonSlicef 

func InEpsilonSlicef(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.

func InEpsilonf 

func InEpsilonf(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonf asserts that expected and actual have a relative error less than epsilon

func IsDecreasing 

func IsDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

IsDecreasing asserts that the collection is decreasing 

assert.IsDecreasing(t, []int{2, 1, 0})
assert.IsDecreasing(t, []float{2, 1})
assert.IsDecreasing(t, []string{"b", "a"})

func IsDecreasingf 

func IsDecreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool

IsDecreasingf asserts that the collection is decreasing 

assert.IsDecreasingf(t, []int{2, 1, 0}, "error message %s", "formatted")
assert.IsDecreasingf(t, []float{2, 1}, "error message %s", "formatted")
assert.IsDecreasingf(t, []string{"b", "a"}, "error message %s", "formatted")

func IsIncreasing 

func IsIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

IsIncreasing asserts that the collection is increasing 

assert.IsIncreasing(t, []int{1, 2, 3})
assert.IsIncreasing(t, []float{1, 2})
assert.IsIncreasing(t, []string{"a", "b"})

func IsIncreasingf 

func IsIncreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool

IsIncreasingf asserts that the collection is increasing 

assert.IsIncreasingf(t, []int{1, 2, 3}, "error message %s", "formatted")
assert.IsIncreasingf(t, []float{1, 2}, "error message %s", "formatted")
assert.IsIncreasingf(t, []string{"a", "b"}, "error message %s", "formatted")

func IsNonDecreasing 

func IsNonDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

IsNonDecreasing asserts that the collection is not decreasing 

assert.IsNonDecreasing(t, []int{1, 1, 2})
assert.IsNonDecreasing(t, []float{1, 2})
assert.IsNonDecreasing(t, []string{"a", "b"})

func IsNonDecreasingf 

func IsNonDecreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool

IsNonDecreasingf asserts that the collection is not decreasing 

assert.IsNonDecreasingf(t, []int{1, 1, 2}, "error message %s", "formatted")
assert.IsNonDecreasingf(t, []float{1, 2}, "error message %s", "formatted")
assert.IsNonDecreasingf(t, []string{"a", "b"}, "error message %s", "formatted")

func IsNonIncreasing 

func IsNonIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

IsNonIncreasing asserts that the collection is not increasing 

assert.IsNonIncreasing(t, []int{2, 1, 1})
assert.IsNonIncreasing(t, []float{2, 1})
assert.IsNonIncreasing(t, []string{"b", "a"})

func IsNonIncreasingf 

func IsNonIncreasingf(t TestingT, object interface{}, msg string, args ...interface{}) bool

IsNonIncreasingf asserts that the collection is not increasing 

assert.IsNonIncreasingf(t, []int{2, 1, 1}, "error message %s", "formatted")
assert.IsNonIncreasingf(t, []float{2, 1}, "error message %s", "formatted")
assert.IsNonIncreasingf(t, []string{"b", "a"}, "error message %s", "formatted")

func IsType 

func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool

IsType asserts that the specified objects are of the same type.

func IsTypef 

func IsTypef(t TestingT, expectedType interface{}, object interface{}, msg string, args ...interface{}) bool

IsTypef asserts that the specified objects are of the same type.

func JSONEq 

func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool

JSONEq asserts that two JSON strings are equivalent. 

assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)

func JSONEqf 

func JSONEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool

JSONEqf asserts that two JSON strings are equivalent. 

assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")

func Len 

func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool

Len asserts that the specified object has specific length. Len also fails if the object has a type that len() not accept. 

assert.Len(t, mySlice, 3)

func Lenf 

func Lenf(t TestingT, object interface{}, length int, msg string, args ...interface{}) bool

Lenf asserts that the specified object has specific length. Lenf also fails if the object has a type that len() not accept. 

assert.Lenf(t, mySlice, 3, "error message %s", "formatted")

func Less 

func Less(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Less asserts that the first element is less than the second 

assert.Less(t, 1, 2)
assert.Less(t, float64(1), float64(2))
assert.Less(t, "a", "b")

func LessOrEqual 

func LessOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

LessOrEqual asserts that the first element is less than or equal to the second 

assert.LessOrEqual(t, 1, 2)
assert.LessOrEqual(t, 2, 2)
assert.LessOrEqual(t, "a", "b")
assert.LessOrEqual(t, "b", "b")

func LessOrEqualf 

func LessOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

LessOrEqualf asserts that the first element is less than or equal to the second 

assert.LessOrEqualf(t, 1, 2, "error message %s", "formatted")
assert.LessOrEqualf(t, 2, 2, "error message %s", "formatted")
assert.LessOrEqualf(t, "a", "b", "error message %s", "formatted")
assert.LessOrEqualf(t, "b", "b", "error message %s", "formatted")

func Lessf 

func Lessf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Lessf asserts that the first element is less than the second 

assert.Lessf(t, 1, 2, "error message %s", "formatted")
assert.Lessf(t, float64(1), float64(2), "error message %s", "formatted")
assert.Lessf(t, "a", "b", "error message %s", "formatted")

func Negative 

func Negative(t TestingT, e interface{}, msgAndArgs ...interface{}) bool

Negative asserts that the specified element is negative 

assert.Negative(t, -1)
assert.Negative(t, -1.23)

func Negativef 

func Negativef(t TestingT, e interface{}, msg string, args ...interface{}) bool

Negativef asserts that the specified element is negative 

assert.Negativef(t, -1, "error message %s", "formatted")
assert.Negativef(t, -1.23, "error message %s", "formatted")

func Never 

func Never(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Never asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick. 

assert.Never(t, func() bool { return false; }, time.Second, 10*time.Millisecond)

func Neverf 

func Neverf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Neverf asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick. 

assert.Neverf(t, func() bool { return false; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func Nil 

func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

Nil asserts that the specified object is nil. 

assert.Nil(t, err)

func Nilf 

func Nilf(t TestingT, object interface{}, msg string, args ...interface{}) bool

Nilf asserts that the specified object is nil. 

assert.Nilf(t, err, "error message %s", "formatted")

func NoDirExists 

func NoDirExists(t TestingT, path string, msgAndArgs ...interface{}) bool

NoDirExists checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func NoDirExistsf 

func NoDirExistsf(t TestingT, path string, msg string, args ...interface{}) bool

NoDirExistsf checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func NoError 

func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool

NoError asserts that a function returned no error (i.e. `nil`). 

  actualObj, err := SomeFunction()
  if assert.NoError(t, err) {
	   assert.Equal(t, expectedObj, actualObj)
  }

func NoErrorf 

func NoErrorf(t TestingT, err error, msg string, args ...interface{}) bool

NoErrorf asserts that a function returned no error (i.e. `nil`). 

  actualObj, err := SomeFunction()
  if assert.NoErrorf(t, err, "error message %s", "formatted") {
	   assert.Equal(t, expectedObj, actualObj)
  }

func NoFileExists 

func NoFileExists(t TestingT, path string, msgAndArgs ...interface{}) bool

NoFileExists checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func NoFileExistsf 

func NoFileExistsf(t TestingT, path string, msg string, args ...interface{}) bool

NoFileExistsf checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func NotContains 

func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool

NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element. 

assert.NotContains(t, "Hello World", "Earth")
assert.NotContains(t, ["Hello", "World"], "Earth")
assert.NotContains(t, {"Hello": "World"}, "Earth")

func NotContainsf 

func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool

NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element. 

assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")

func NotEmpty 

func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0. 

if assert.NotEmpty(t, obj) {
  assert.Equal(t, "two", obj[1])
}

func NotEmptyf 

func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool

NotEmptyf asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0. 

if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
  assert.Equal(t, "two", obj[1])
}

func NotEqual 

func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

NotEqual asserts that the specified values are NOT equal. 

assert.NotEqual(t, obj1, obj2)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func NotEqualValues 

func NotEqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

NotEqualValues asserts that two objects are not equal even when converted to the same type 

assert.NotEqualValues(t, obj1, obj2)

func NotEqualValuesf 

func NotEqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotEqualValuesf asserts that two objects are not equal even when converted to the same type 

assert.NotEqualValuesf(t, obj1, obj2, "error message %s", "formatted")

func NotEqualf 

func NotEqualf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotEqualf asserts that the specified values are NOT equal. 

assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func NotErrorIs 

func NotErrorIs(t TestingT, err, target error, msgAndArgs ...interface{}) bool

NotErrorIs asserts that at none of the errors in err's chain matches target. This is a wrapper for errors.Is.

func NotErrorIsf 

func NotErrorIsf(t TestingT, err error, target error, msg string, args ...interface{}) bool

NotErrorIsf asserts that at none of the errors in err's chain matches target. This is a wrapper for errors.Is.

func NotNil 

func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

NotNil asserts that the specified object is not nil. 

assert.NotNil(t, err)

func NotNilf 

func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) bool

NotNilf asserts that the specified object is not nil. 

assert.NotNilf(t, err, "error message %s", "formatted")

func NotPanics 

func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool

NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic. 

assert.NotPanics(t, func(){ RemainCalm() })

func NotPanicsf 

func NotPanicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool

NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic. 

assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")

func NotRegexp 

func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

NotRegexp asserts that a specified regexp does not match a string. 

assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
assert.NotRegexp(t, "^start", "it's not starting")

func NotRegexpf 

func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool

NotRegexpf asserts that a specified regexp does not match a string. 

assert.NotRegexpf(t, regexp.MustCompile("starts"), "it's starting", "error message %s", "formatted")
assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")

func NotSame 

func NotSame(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

NotSame asserts that two pointers do not reference the same object. 

assert.NotSame(t, ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func NotSamef 

func NotSamef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotSamef asserts that two pointers do not reference the same object. 

assert.NotSamef(t, ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func NotSubset 

func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool)

NotSubset asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...). 

assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")

func NotSubsetf 

func NotSubsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool

NotSubsetf asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...). 

assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")

func NotZero 

func NotZero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool

NotZero asserts that i is not the zero value for its type.

func NotZerof 

func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) bool

NotZerof asserts that i is not the zero value for its type.

func ObjectsAreEqual 

func ObjectsAreEqual(expected, actual interface{}) bool

ObjectsAreEqual determines if two objects are considered equal.

This function does no assertion of any kind.

func ObjectsAreEqualValues 

func ObjectsAreEqualValues(expected, actual interface{}) bool

ObjectsAreEqualValues gets whether two objects are equal, or if their values are equal.

func Panics 

func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool

Panics asserts that the code inside the specified PanicTestFunc panics. 

assert.Panics(t, func(){ GoCrazy() })

func PanicsWithError 

func PanicsWithError(t TestingT, errString string, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithError asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison. 

assert.PanicsWithError(t, "crazy error", func(){ GoCrazy() })

func PanicsWithErrorf 

func PanicsWithErrorf(t TestingT, errString string, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithErrorf asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison. 

assert.PanicsWithErrorf(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func PanicsWithValue 

func PanicsWithValue(t TestingT, expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value. 

assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })

func PanicsWithValuef 

func PanicsWithValuef(t TestingT, expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value. 

assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func Panicsf 

func Panicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool

Panicsf asserts that the code inside the specified PanicTestFunc panics. 

assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")

func Positive 

func Positive(t TestingT, e interface{}, msgAndArgs ...interface{}) bool

Positive asserts that the specified element is positive 

assert.Positive(t, 1)
assert.Positive(t, 1.23)

func Positivef 

func Positivef(t TestingT, e interface{}, msg string, args ...interface{}) bool

Positivef asserts that the specified element is positive 

assert.Positivef(t, 1, "error message %s", "formatted")
assert.Positivef(t, 1.23, "error message %s", "formatted")

func Regexp 

func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

Regexp asserts that a specified regexp matches a string. 

assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
assert.Regexp(t, "start...$", "it's not starting")

func Regexpf 

func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool

Regexpf asserts that a specified regexp matches a string. 

assert.Regexpf(t, regexp.MustCompile("start"), "it's starting", "error message %s", "formatted")
assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")

func Same 

func Same(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

Same asserts that two pointers reference the same object. 

assert.Same(t, ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func Samef 

func Samef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Samef asserts that two pointers reference the same object. 

assert.Samef(t, ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func Subset 

func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool)

Subset asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...). 

assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")

func Subsetf 

func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool

Subsetf asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...). 

assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")

func True 

func True(t TestingT, value bool, msgAndArgs ...interface{}) bool

True asserts that the specified value is true. 

assert.True(t, myBool)

func Truef 

func Truef(t TestingT, value bool, msg string, args ...interface{}) bool

Truef asserts that the specified value is true. 

assert.Truef(t, myBool, "error message %s", "formatted")

func WithinDuration 

func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool

WithinDuration asserts that the two times are within duration delta of each other. 

assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)

func WithinDurationf 

func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool

WithinDurationf asserts that the two times are within duration delta of each other. 

assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")

func WithinRange 

func WithinRange(t TestingT, actual, start, end time.Time, msgAndArgs ...interface{}) bool

WithinRange asserts that a time is within a time range (inclusive). 

assert.WithinRange(t, time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second))

func WithinRangef 

func WithinRangef(t TestingT, actual time.Time, start time.Time, end time.Time, msg string, args ...interface{}) bool

WithinRangef asserts that a time is within a time range (inclusive). 

assert.WithinRangef(t, time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second), "error message %s", "formatted")

func YAMLEq 

func YAMLEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool

YAMLEq asserts that two YAML strings are equivalent.

func YAMLEqf 

func YAMLEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool

YAMLEqf asserts that two YAML strings are equivalent.

func Zero 

func Zero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool

Zero asserts that i is the zero value for its type.

func Zerof 

func Zerof(t TestingT, i interface{}, msg string, args ...interface{}) bool

Zerof asserts that i is the zero value for its type.

Types

type Assertions 

type Assertions struct {
	// contains filtered or unexported fields
}

Assertions provides assertion methods around the TestingT interface.

func New 

func New(t TestingT) *Assertions

New makes a new Assertions object for the specified TestingT.

func (*Assertions) Condition 

func (a *Assertions) Condition(comp Comparison, msgAndArgs ...interface{}) bool

Condition uses a Comparison to assert a complex condition.

func (*Assertions) Conditionf 

func (a *Assertions) Conditionf(comp Comparison, msg string, args ...interface{}) bool

Conditionf uses a Comparison to assert a complex condition.

func (*Assertions) Contains 

func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool

Contains asserts that the specified string, list(array, slice...) or map contains the specified substring or element. 

a.Contains("Hello World", "World")
a.Contains(["Hello", "World"], "World")
a.Contains({"Hello": "World"}, "Hello")

func (*Assertions) Containsf 

func (a *Assertions) Containsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool

Containsf asserts that the specified string, list(array, slice...) or map contains the specified substring or element. 

a.Containsf("Hello World", "World", "error message %s", "formatted")
a.Containsf(["Hello", "World"], "World", "error message %s", "formatted")
a.Containsf({"Hello": "World"}, "Hello", "error message %s", "formatted")

func (*Assertions) DirExists 

func (a *Assertions) DirExists(path string, msgAndArgs ...interface{}) bool

DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func (*Assertions) DirExistsf 

func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) bool

DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func (*Assertions) ElementsMatch 

func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndArgs ...interface{}) bool

ElementsMatch asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2])

func (*Assertions) ElementsMatchf 

func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg string, args ...interface{}) bool

ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

a.ElementsMatchf([1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")

func (*Assertions) Empty 

func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool

Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0. 

a.Empty(obj)

func (*Assertions) Emptyf 

func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{}) bool

Emptyf asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0. 

a.Emptyf(obj, "error message %s", "formatted")

func (*Assertions) Equal 

func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

Equal asserts that two objects are equal. 

a.Equal(123, 123)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func (*Assertions) EqualError 

func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) bool

EqualError asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error. 

actualObj, err := SomeFunction()
a.EqualError(err,  expectedErrorString)

func (*Assertions) EqualErrorf 

func (a *Assertions) EqualErrorf(theError error, errString string, msg string, args ...interface{}) bool

EqualErrorf asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error. 

actualObj, err := SomeFunction()
a.EqualErrorf(err,  expectedErrorString, "error message %s", "formatted")

func (*Assertions) EqualValues 

func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

EqualValues asserts that two objects are equal or convertable to the same types and equal. 

a.EqualValues(uint32(123), int32(123))

func (*Assertions) EqualValuesf 

func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

EqualValuesf asserts that two objects are equal or convertable to the same types and equal. 

a.EqualValuesf(uint32(123), int32(123), "error message %s", "formatted")

func (*Assertions) Equalf 

func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Equalf asserts that two objects are equal. 

a.Equalf(123, 123, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func (*Assertions) Error 

func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool

Error asserts that a function returned an error (i.e. not `nil`). 

  actualObj, err := SomeFunction()
  if a.Error(err) {
	   assert.Equal(t, expectedError, err)
  }

func (*Assertions) ErrorAs 

func (a *Assertions) ErrorAs(err error, target interface{}, msgAndArgs ...interface{}) bool

ErrorAs asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value. This is a wrapper for errors.As.

func (*Assertions) ErrorAsf 

func (a *Assertions) ErrorAsf(err error, target interface{}, msg string, args ...interface{}) bool

ErrorAsf asserts that at least one of the errors in err's chain matches target, and if so, sets target to that error value. This is a wrapper for errors.As.

func (*Assertions) ErrorContains 

func (a *Assertions) ErrorContains(theError error, contains string, msgAndArgs ...interface{}) bool

ErrorContains asserts that a function returned an error (i.e. not `nil`) and that the error contains the specified substring. 

actualObj, err := SomeFunction()
a.ErrorContains(err,  expectedErrorSubString)

func (*Assertions) ErrorContainsf 

func (a *Assertions) ErrorContainsf(theError error, contains string, msg string, args ...interface{}) bool

ErrorContainsf asserts that a function returned an error (i.e. not `nil`) and that the error contains the specified substring. 

actualObj, err := SomeFunction()
a.ErrorContainsf(err,  expectedErrorSubString, "error message %s", "formatted")

func (*Assertions) ErrorIs 

func (a *Assertions) ErrorIs(err error, target error, msgAndArgs ...interface{}) bool

ErrorIs asserts that at least one of the errors in err's chain matches target. This is a wrapper for errors.Is.

func (*Assertions) ErrorIsf 

func (a *Assertions) ErrorIsf(err error, target error, msg string, args ...interface{}) bool

ErrorIsf asserts that at least one of the errors in err's chain matches target. This is a wrapper for errors.Is.

func (*Assertions) Errorf 

func (a *Assertions) Errorf(err error, msg string, args ...interface{}) bool

Errorf asserts that a function returned an error (i.e. not `nil`). 

  actualObj, err := SomeFunction()
  if a.Errorf(err, "error message %s", "formatted") {
	   assert.Equal(t, expectedErrorf, err)
  }

func (*Assertions) Eventually 

func (a *Assertions) Eventually(condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Eventually asserts that given condition will be met in waitFor time, periodically checking target function each tick. 

a.Eventually(func() bool { return true; }, time.Second, 10*time.Millisecond)

func (*Assertions) Eventuallyf 

func (a *Assertions) Eventuallyf(condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Eventuallyf asserts that given condition will be met in waitFor time, periodically checking target function each tick. 

a.Eventuallyf(func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func (*Assertions) Exactly 

func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

Exactly asserts that two objects are equal in value and type. 

a.Exactly(int32(123), int64(123))

func (*Assertions) Exactlyf 

func (a *Assertions) Exactlyf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Exactlyf asserts that two objects are equal in value and type. 

a.Exactlyf(int32(123), int64(123), "error message %s", "formatted")

func (*Assertions) Fail 

func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) bool

Fail reports a failure through

func (*Assertions) FailNow 

func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) bool

FailNow fails test

func (*Assertions) FailNowf 

func (a *Assertions) FailNowf(failureMessage string, msg string, args ...interface{}) bool

FailNowf fails test

func (*Assertions) Failf 

func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{}) bool

Failf reports a failure through

func (*Assertions) False 

func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool

False asserts that the specified value is false. 

a.False(myBool)

func (*Assertions) Falsef 

func (a *Assertions) Falsef(value bool, msg string, args ...interface{}) bool

Falsef asserts that the specified value is false. 

a.Falsef(myBool, "error message %s", "formatted")

func (*Assertions) FileExists 

func (a *Assertions) FileExists(path string, msgAndArgs ...interface{}) bool

FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func (*Assertions) FileExistsf 

func (a *Assertions) FileExistsf(path string, msg string, args ...interface{}) bool

FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func (*Assertions) Greater 

func (a *Assertions) Greater(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Greater asserts that the first element is greater than the second 

a.Greater(2, 1)
a.Greater(float64(2), float64(1))
a.Greater("b", "a")

func (*Assertions) GreaterOrEqual 

func (a *Assertions) GreaterOrEqual(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

GreaterOrEqual asserts that the first element is greater than or equal to the second 

a.GreaterOrEqual(2, 1)
a.GreaterOrEqual(2, 2)
a.GreaterOrEqual("b", "a")
a.GreaterOrEqual("b", "b")

func (*Assertions) GreaterOrEqualf 

func (a *Assertions) GreaterOrEqualf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

GreaterOrEqualf asserts that the first element is greater than or equal to the second 

a.GreaterOrEqualf(2, 1, "error message %s", "formatted")
a.GreaterOrEqualf(2, 2, "error message %s", "formatted")
a.GreaterOrEqualf("b", "a", "error message %s", "formatted")
a.GreaterOrEqualf("b", "b", "error message %s", "formatted")

func (*Assertions) Greaterf 

func (a *Assertions) Greaterf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Greaterf asserts that the first element is greater than the second 

a.Greaterf(2, 1, "error message %s", "formatted")
a.Greaterf(float64(2), float64(1), "error message %s", "formatted")
a.Greaterf("b", "a", "error message %s", "formatted")

func (*Assertions) HTTPBodyContains 

func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyContains asserts that a specified handler returns a body that contains a string. 

a.HTTPBodyContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPBodyContainsf 

func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyContainsf asserts that a specified handler returns a body that contains a string. 

a.HTTPBodyContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPBodyNotContains 

func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyNotContains asserts that a specified handler returns a body that does not contain a string. 

a.HTTPBodyNotContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPBodyNotContainsf 

func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyNotContainsf asserts that a specified handler returns a body that does not contain a string. 

a.HTTPBodyNotContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPError 

func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPError asserts that a specified handler returns an error status code. 

a.HTTPError(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPErrorf 

func (a *Assertions) HTTPErrorf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPErrorf asserts that a specified handler returns an error status code. 

a.HTTPErrorf(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPRedirect 

func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPRedirect asserts that a specified handler returns a redirect status code. 

a.HTTPRedirect(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPRedirectf 

func (a *Assertions) HTTPRedirectf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPRedirectf asserts that a specified handler returns a redirect status code. 

a.HTTPRedirectf(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPStatusCode 

func (a *Assertions) HTTPStatusCode(handler http.HandlerFunc, method string, url string, values url.Values, statuscode int, msgAndArgs ...interface{}) bool

HTTPStatusCode asserts that a specified handler returns a specified status code. 

a.HTTPStatusCode(myHandler, "GET", "/notImplemented", nil, 501)

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPStatusCodef 

func (a *Assertions) HTTPStatusCodef(handler http.HandlerFunc, method string, url string, values url.Values, statuscode int, msg string, args ...interface{}) bool

HTTPStatusCodef asserts that a specified handler returns a specified status code. 

a.HTTPStatusCodef(myHandler, "GET", "/notImplemented", nil, 501, "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPSuccess 

func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPSuccess asserts that a specified handler returns a success status code. 

a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPSuccessf 

func (a *Assertions) HTTPSuccessf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPSuccessf asserts that a specified handler returns a success status code. 

a.HTTPSuccessf(myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) Implements 

func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool

Implements asserts that an object is implemented by the specified interface. 

a.Implements((*MyInterface)(nil), new(MyObject))

func (*Assertions) Implementsf 

func (a *Assertions) Implementsf(interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool

Implementsf asserts that an object is implemented by the specified interface. 

a.Implementsf((*MyInterface)(nil), new(MyObject), "error message %s", "formatted")

func (*Assertions) InDelta 

func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDelta asserts that the two numerals are within delta of each other. 

a.InDelta(math.Pi, 22/7.0, 0.01)

func (*Assertions) InDeltaMapValues 

func (a *Assertions) InDeltaMapValues(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func (*Assertions) InDeltaMapValuesf 

func (a *Assertions) InDeltaMapValuesf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func (*Assertions) InDeltaSlice 

func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaSlice is the same as InDelta, except it compares two slices.

func (*Assertions) InDeltaSlicef 

func (a *Assertions) InDeltaSlicef(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaSlicef is the same as InDelta, except it compares two slices.

func (*Assertions) InDeltaf 

func (a *Assertions) InDeltaf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaf asserts that the two numerals are within delta of each other. 

a.InDeltaf(math.Pi, 22/7.0, 0.01, "error message %s", "formatted")

func (*Assertions) InEpsilon 

func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilon asserts that expected and actual have a relative error less than epsilon

func (*Assertions) InEpsilonSlice 

func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.

func (*Assertions) InEpsilonSlicef 

func (a *Assertions) InEpsilonSlicef(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.

func (*Assertions) InEpsilonf 

func (a *Assertions) InEpsilonf(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonf asserts that expected and actual have a relative error less than epsilon

func (*Assertions) IsDecreasing 

func (a *Assertions) IsDecreasing(object interface{}, msgAndArgs ...interface{}) bool

IsDecreasing asserts that the collection is decreasing 

a.IsDecreasing([]int{2, 1, 0})
a.IsDecreasing([]float{2, 1})
a.IsDecreasing([]string{"b", "a"})

func (*Assertions) IsDecreasingf 

func (a *Assertions) IsDecreasingf(object interface{}, msg string, args ...interface{}) bool

IsDecreasingf asserts that the collection is decreasing 

a.IsDecreasingf([]int{2, 1, 0}, "error message %s", "formatted")
a.IsDecreasingf([]float{2, 1}, "error message %s", "formatted")
a.IsDecreasingf([]string{"b", "a"}, "error message %s", "formatted")

func (*Assertions) IsIncreasing 

func (a *Assertions) IsIncreasing(object interface{}, msgAndArgs ...interface{}) bool

IsIncreasing asserts that the collection is increasing 

a.IsIncreasing([]int{1, 2, 3})
a.IsIncreasing([]float{1, 2})
a.IsIncreasing([]string{"a", "b"})

func (*Assertions) IsIncreasingf 

func (a *Assertions) IsIncreasingf(object interface{}, msg string, args ...interface{}) bool

IsIncreasingf asserts that the collection is increasing 

a.IsIncreasingf([]int{1, 2, 3}, "error message %s", "formatted")
a.IsIncreasingf([]float{1, 2}, "error message %s", "formatted")
a.IsIncreasingf([]string{"a", "b"}, "error message %s", "formatted")

func (*Assertions) IsNonDecreasing 

func (a *Assertions) IsNonDecreasing(object interface{}, msgAndArgs ...interface{}) bool

IsNonDecreasing asserts that the collection is not decreasing 

a.IsNonDecreasing([]int{1, 1, 2})
a.IsNonDecreasing([]float{1, 2})
a.IsNonDecreasing([]string{"a", "b"})

func (*Assertions) IsNonDecreasingf 

func (a *Assertions) IsNonDecreasingf(object interface{}, msg string, args ...interface{}) bool

IsNonDecreasingf asserts that the collection is not decreasing 

a.IsNonDecreasingf([]int{1, 1, 2}, "error message %s", "formatted")
a.IsNonDecreasingf([]float{1, 2}, "error message %s", "formatted")
a.IsNonDecreasingf([]string{"a", "b"}, "error message %s", "formatted")

func (*Assertions) IsNonIncreasing 

func (a *Assertions) IsNonIncreasing(object interface{}, msgAndArgs ...interface{}) bool

IsNonIncreasing asserts that the collection is not increasing 

a.IsNonIncreasing([]int{2, 1, 1})
a.IsNonIncreasing([]float{2, 1})
a.IsNonIncreasing([]string{"b", "a"})

func (*Assertions) IsNonIncreasingf 

func (a *Assertions) IsNonIncreasingf(object interface{}, msg string, args ...interface{}) bool

IsNonIncreasingf asserts that the collection is not increasing 

a.IsNonIncreasingf([]int{2, 1, 1}, "error message %s", "formatted")
a.IsNonIncreasingf([]float{2, 1}, "error message %s", "formatted")
a.IsNonIncreasingf([]string{"b", "a"}, "error message %s", "formatted")

func (*Assertions) IsType 

func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool

IsType asserts that the specified objects are of the same type.

func (*Assertions) IsTypef 

func (a *Assertions) IsTypef(expectedType interface{}, object interface{}, msg string, args ...interface{}) bool

IsTypef asserts that the specified objects are of the same type.

func (*Assertions) JSONEq 

func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) bool

JSONEq asserts that two JSON strings are equivalent. 

a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)

func (*Assertions) JSONEqf 

func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ...interface{}) bool

JSONEqf asserts that two JSON strings are equivalent. 

a.JSONEqf(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")

func (*Assertions) Len 

func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) bool

Len asserts that the specified object has specific length. Len also fails if the object has a type that len() not accept. 

a.Len(mySlice, 3)

func (*Assertions) Lenf 

func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...interface{}) bool

Lenf asserts that the specified object has specific length. Lenf also fails if the object has a type that len() not accept. 

a.Lenf(mySlice, 3, "error message %s", "formatted")

func (*Assertions) Less 

func (a *Assertions) Less(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Less asserts that the first element is less than the second 

a.Less(1, 2)
a.Less(float64(1), float64(2))
a.Less("a", "b")

func (*Assertions) LessOrEqual 

func (a *Assertions) LessOrEqual(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

LessOrEqual asserts that the first element is less than or equal to the second 

a.LessOrEqual(1, 2)
a.LessOrEqual(2, 2)
a.LessOrEqual("a", "b")
a.LessOrEqual("b", "b")

func (*Assertions) LessOrEqualf 

func (a *Assertions) LessOrEqualf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

LessOrEqualf asserts that the first element is less than or equal to the second 

a.LessOrEqualf(1, 2, "error message %s", "formatted")
a.LessOrEqualf(2, 2, "error message %s", "formatted")
a.LessOrEqualf("a", "b", "error message %s", "formatted")
a.LessOrEqualf("b", "b", "error message %s", "formatted")

func (*Assertions) Lessf 

func (a *Assertions) Lessf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Lessf asserts that the first element is less than the second 

a.Lessf(1, 2, "error message %s", "formatted")
a.Lessf(float64(1), float64(2), "error message %s", "formatted")
a.Lessf("a", "b", "error message %s", "formatted")

func (*Assertions) Negative 

func (a *Assertions) Negative(e interface{}, msgAndArgs ...interface{}) bool

Negative asserts that the specified element is negative 

a.Negative(-1)
a.Negative(-1.23)

func (*Assertions) Negativef 

func (a *Assertions) Negativef(e interface{}, msg string, args ...interface{}) bool

Negativef asserts that the specified element is negative 

a.Negativef(-1, "error message %s", "formatted")
a.Negativef(-1.23, "error message %s", "formatted")

func (*Assertions) Never 

func (a *Assertions) Never(condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Never asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick. 

a.Never(func() bool { return false; }, time.Second, 10*time.Millisecond)

func (*Assertions) Neverf 

func (a *Assertions) Neverf(condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Neverf asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick. 

a.Neverf(func() bool { return false; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func (*Assertions) Nil 

func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool

Nil asserts that the specified object is nil. 

a.Nil(err)

func (*Assertions) Nilf 

func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) bool

Nilf asserts that the specified object is nil. 

a.Nilf(err, "error message %s", "formatted")

func (*Assertions) NoDirExists 

func (a *Assertions) NoDirExists(path string, msgAndArgs ...interface{}) bool

NoDirExists checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func (*Assertions) NoDirExistsf 

func (a *Assertions) NoDirExistsf(path string, msg string, args ...interface{}) bool

NoDirExistsf checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func (*Assertions) NoError 

func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool

NoError asserts that a function returned no error (i.e. `nil`). 

  actualObj, err := SomeFunction()
  if a.NoError(err) {
	   assert.Equal(t, expectedObj, actualObj)
  }

func (*Assertions) NoErrorf 

func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) bool

NoErrorf asserts that a function returned no error (i.e. `nil`). 

  actualObj, err := SomeFunction()
  if a.NoErrorf(err, "error message %s", "formatted") {
	   assert.Equal(t, expectedObj, actualObj)
  }

func (*Assertions) NoFileExists 

func (a *Assertions) NoFileExists(path string, msgAndArgs ...interface{}) bool

NoFileExists checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func (*Assertions) NoFileExistsf 

func (a *Assertions) NoFileExistsf(path string, msg string, args ...interface{}) bool

NoFileExistsf checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func (*Assertions) NotContains 

func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool

NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element. 

a.NotContains("Hello World", "Earth")
a.NotContains(["Hello", "World"], "Earth")
a.NotContains({"Hello": "World"}, "Earth")

func (*Assertions) NotContainsf 

func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool

NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element. 

a.NotContainsf("Hello World", "Earth", "error message %s", "formatted")
a.NotContainsf(["Hello", "World"], "Earth", "error message %s", "formatted")
a.NotContainsf({"Hello": "World"}, "Earth", "error message %s", "formatted")

func (*Assertions) NotEmpty 

func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) bool

NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0. 

if a.NotEmpty(obj) {
  assert.Equal(t, "two", obj[1])
}

func (*Assertions) NotEmptyf 

func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface{}) bool

NotEmptyf asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0. 

if a.NotEmptyf(obj, "error message %s", "formatted") {
  assert.Equal(t, "two", obj[1])
}

func (*Assertions) NotEqual 

func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

NotEqual asserts that the specified values are NOT equal. 

a.NotEqual(obj1, obj2)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func (*Assertions) NotEqualValues 

func (a *Assertions) NotEqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

NotEqualValues asserts that two objects are not equal even when converted to the same type 

a.NotEqualValues(obj1, obj2)

func (*Assertions) NotEqualValuesf 

func (a *Assertions) NotEqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotEqualValuesf asserts that two objects are not equal even when converted to the same type 

a.NotEqualValuesf(obj1, obj2, "error message %s", "formatted")

func (*Assertions) NotEqualf 

func (a *Assertions) NotEqualf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotEqualf asserts that the specified values are NOT equal. 

a.NotEqualf(obj1, obj2, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func (*Assertions) NotErrorIs 

func (a *Assertions) NotErrorIs(err error, target error, msgAndArgs ...interface{}) bool

NotErrorIs asserts that at none of the errors in err's chain matches target. This is a wrapper for errors.Is.

func (*Assertions) NotErrorIsf 

func (a *Assertions) NotErrorIsf(err error, target error, msg string, args ...interface{}) bool

NotErrorIsf asserts that at none of the errors in err's chain matches target. This is a wrapper for errors.Is.

func (*Assertions) NotNil 

func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool

NotNil asserts that the specified object is not nil. 

a.NotNil(err)

func (*Assertions) NotNilf 

func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}) bool

NotNilf asserts that the specified object is not nil. 

a.NotNilf(err, "error message %s", "formatted")

func (*Assertions) NotPanics 

func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool

NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic. 

a.NotPanics(func(){ RemainCalm() })

func (*Assertions) NotPanicsf 

func (a *Assertions) NotPanicsf(f PanicTestFunc, msg string, args ...interface{}) bool

NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic. 

a.NotPanicsf(func(){ RemainCalm() }, "error message %s", "formatted")

func (*Assertions) NotRegexp 

func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

NotRegexp asserts that a specified regexp does not match a string. 

a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
a.NotRegexp("^start", "it's not starting")

func (*Assertions) NotRegexpf 

func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool

NotRegexpf asserts that a specified regexp does not match a string. 

a.NotRegexpf(regexp.MustCompile("starts"), "it's starting", "error message %s", "formatted")
a.NotRegexpf("^start", "it's not starting", "error message %s", "formatted")

func (*Assertions) NotSame 

func (a *Assertions) NotSame(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

NotSame asserts that two pointers do not reference the same object. 

a.NotSame(ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) NotSamef 

func (a *Assertions) NotSamef(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotSamef asserts that two pointers do not reference the same object. 

a.NotSamef(ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) NotSubset 

func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool

NotSubset asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...). 

a.NotSubset([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")

func (*Assertions) NotSubsetf 

func (a *Assertions) NotSubsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool

NotSubsetf asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...). 

a.NotSubsetf([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")

func (*Assertions) NotZero 

func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) bool

NotZero asserts that i is not the zero value for its type.

func (*Assertions) NotZerof 

func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) bool

NotZerof asserts that i is not the zero value for its type.

func (*Assertions) Panics 

func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool

Panics asserts that the code inside the specified PanicTestFunc panics. 

a.Panics(func(){ GoCrazy() })

func (*Assertions) PanicsWithError 

func (a *Assertions) PanicsWithError(errString string, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithError asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison. 

a.PanicsWithError("crazy error", func(){ GoCrazy() })

func (*Assertions) PanicsWithErrorf 

func (a *Assertions) PanicsWithErrorf(errString string, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithErrorf asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison. 

a.PanicsWithErrorf("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func (*Assertions) PanicsWithValue 

func (a *Assertions) PanicsWithValue(expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value. 

a.PanicsWithValue("crazy error", func(){ GoCrazy() })

func (*Assertions) PanicsWithValuef 

func (a *Assertions) PanicsWithValuef(expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value. 

a.PanicsWithValuef("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func (*Assertions) Panicsf 

func (a *Assertions) Panicsf(f PanicTestFunc, msg string, args ...interface{}) bool

Panicsf asserts that the code inside the specified PanicTestFunc panics. 

a.Panicsf(func(){ GoCrazy() }, "error message %s", "formatted")

func (*Assertions) Positive 

func (a *Assertions) Positive(e interface{}, msgAndArgs ...interface{}) bool

Positive asserts that the specified element is positive 

a.Positive(1)
a.Positive(1.23)

func (*Assertions) Positivef 

func (a *Assertions) Positivef(e interface{}, msg string, args ...interface{}) bool

Positivef asserts that the specified element is positive 

a.Positivef(1, "error message %s", "formatted")
a.Positivef(1.23, "error message %s", "formatted")

func (*Assertions) Regexp 

func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

Regexp asserts that a specified regexp matches a string. 

a.Regexp(regexp.MustCompile("start"), "it's starting")
a.Regexp("start...$", "it's not starting")

func (*Assertions) Regexpf 

func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool

Regexpf asserts that a specified regexp matches a string. 

a.Regexpf(regexp.MustCompile("start"), "it's starting", "error message %s", "formatted")
a.Regexpf("start...$", "it's not starting", "error message %s", "formatted")

func (*Assertions) Same 

func (a *Assertions) Same(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

Same asserts that two pointers reference the same object. 

a.Same(ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) Samef 

func (a *Assertions) Samef(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Samef asserts that two pointers reference the same object. 

a.Samef(ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) Subset 

func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool

Subset asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...). 

a.Subset([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")

func (*Assertions) Subsetf 

func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool

Subsetf asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...). 

a.Subsetf([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")

func (*Assertions) True 

func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool

True asserts that the specified value is true. 

a.True(myBool)

func (*Assertions) Truef 

func (a *Assertions) Truef(value bool, msg string, args ...interface{}) bool

Truef asserts that the specified value is true. 

a.Truef(myBool, "error message %s", "formatted")

func (*Assertions) WithinDuration 

func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool

WithinDuration asserts that the two times are within duration delta of each other. 

a.WithinDuration(time.Now(), time.Now(), 10*time.Second)

func (*Assertions) WithinDurationf 

func (a *Assertions) WithinDurationf(expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool

WithinDurationf asserts that the two times are within duration delta of each other. 

a.WithinDurationf(time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")

func (*Assertions) WithinRange 

func (a *Assertions) WithinRange(actual time.Time, start time.Time, end time.Time, msgAndArgs ...interface{}) bool

WithinRange asserts that a time is within a time range (inclusive). 

a.WithinRange(time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second))

func (*Assertions) WithinRangef 

func (a *Assertions) WithinRangef(actual time.Time, start time.Time, end time.Time, msg string, args ...interface{}) bool

WithinRangef asserts that a time is within a time range (inclusive). 

a.WithinRangef(time.Now(), time.Now().Add(-time.Second), time.Now().Add(time.Second), "error message %s", "formatted")

func (*Assertions) YAMLEq 

func (a *Assertions) YAMLEq(expected string, actual string, msgAndArgs ...interface{}) bool

YAMLEq asserts that two YAML strings are equivalent.

func (*Assertions) YAMLEqf 

func (a *Assertions) YAMLEqf(expected string, actual string, msg string, args ...interface{}) bool

YAMLEqf asserts that two YAML strings are equivalent.

func (*Assertions) Zero 

func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) bool

Zero asserts that i is the zero value for its type.

func (*Assertions) Zerof 

func (a *Assertions) Zerof(i interface{}, msg string, args ...interface{}) bool

Zerof asserts that i is the zero value for its type.

type BoolAssertionFunc 

type BoolAssertionFunc func(TestingT, bool, ...interface{}) bool

BoolAssertionFunc is a common function prototype when validating a bool value. Can be useful for table driven tests.

Example 
t := &testing.T{} // provided by test

isOkay := func(x int) bool {
	return x >= 42
}

tests := []struct {
	name      string
	arg       int
	assertion BoolAssertionFunc
}{
	{"-1 is bad", -1, False},
	{"42 is good", 42, True},
	{"41 is bad", 41, False},
	{"45 is cool", 45, True},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		tt.assertion(t, isOkay(tt.arg))
	})
}

Output:

type CompareType 

type CompareType int

type Comparison 

type Comparison func() (success bool)

Comparison is a custom function that returns true on success and false on failure

type ComparisonAssertionFunc 

type ComparisonAssertionFunc func(TestingT, interface{}, interface{}, ...interface{}) bool

ComparisonAssertionFunc is a common function prototype when comparing two values. Can be useful for table driven tests.

Example 
t := &testing.T{} // provided by test

adder := func(x, y int) int {
	return x + y
}

type args struct {
	x int
	y int
}

tests := []struct {
	name      string
	args      args
	expect    int
	assertion ComparisonAssertionFunc
}{
	{"2+2=4", args{2, 2}, 4, Equal},
	{"2+2!=5", args{2, 2}, 5, NotEqual},
	{"2+3==5", args{2, 3}, 5, Exactly},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		tt.assertion(t, tt.expect, adder(tt.args.x, tt.args.y))
	})
}

Output:

type ErrorAssertionFunc 

type ErrorAssertionFunc func(TestingT, error, ...interface{}) bool

ErrorAssertionFunc is a common function prototype when validating an error value. Can be useful for table driven tests.

Example 
t := &testing.T{} // provided by test

dumbParseNum := func(input string, v interface{}) error {
	return json.Unmarshal([]byte(input), v)
}

tests := []struct {
	name      string
	arg       string
	assertion ErrorAssertionFunc
}{
	{"1.2 is number", "1.2", NoError},
	{"1.2.3 not number", "1.2.3", Error},
	{"true is not number", "true", Error},
	{"3 is number", "3", NoError},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		var x float64
		tt.assertion(t, dumbParseNum(tt.arg, &x))
	})
}

Output:

type PanicTestFunc 

type PanicTestFunc func()

PanicTestFunc defines a func that should be passed to the assert.Panics and assert.NotPanics methods, and represents a simple func that takes no arguments, and returns nothing.

type TestingT 

type TestingT interface {
	Errorf(format string, args ...interface{})
}

TestingT is an interface wrapper around *testing.T

type ValueAssertionFunc 

type ValueAssertionFunc func(TestingT, interface{}, ...interface{}) bool

ValueAssertionFunc is a common function prototype when validating a single value. Can be useful for table driven tests.

Example 
t := &testing.T{} // provided by test

dumbParse := func(input string) interface{} {
	var x interface{}
	_ = json.Unmarshal([]byte(input), &x)
	return x
}

tests := []struct {
	name      string
	arg       string
	assertion ValueAssertionFunc
}{
	{"true is not nil", "true", NotNil},
	{"empty string is nil", "", Nil},
	{"zero is not nil", "0", NotNil},
	{"zero is zero", "0", Zero},
	{"false is zero", "false", Zero},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		tt.assertion(t, dumbParse(tt.arg))
	})
}

Output:

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.