testing

Documentation

Index

• func MustPanic(testFunc func())
• func TestPanic(testFunc func()) (reason any, isPanic bool)

Examples

• MustPanic
• TestPanic

Functions

func MustPanic

func MustPanic(testFunc func())

MustPanic 有錯誤才是正常，沒有錯誤會引發panic("should panic") If you know that you will get a panic, then you can call this function that will do recover.

Example

If you know that you will get a panic, then you can call this function that will do recover.

MustPanic(func() {
	panic("raise a panic")
})
fmt.Println("I can run in here")

Output:

I can run in here

func TestPanic

func TestPanic(testFunc func()) (reason any, isPanic bool)

TestPanic 在測試的時候，我們會預期有panic，但如果想要確定panic的原因是否真的如同我們猜測，就可以使用這個函數幫忙

Example

// example1
reason, isPanic := TestPanic(func() {
	panic("invalid memory address")
})
fmt.Printf("%v | %v\n", reason, isPanic)

// example2
reason, isPanic = TestPanic(func() {
	panic(errors.New("reason type: error"))
})
fmt.Printf("%v | %v\n", reason.(error).Error(), isPanic)

// example3
reason, isPanic = TestPanic(func() {
	_ = fmt.Sprintln("hello world")
})
fmt.Printf("%v | %v\n", reason, isPanic)

Output:

invalid memory address | true
reason type: error | true
<nil> | false