datafiller

README

datafiller

A Golang package for filling structs by random data.

Installation

go get github.com/erggo/datafiller

Sample Usage

package main

import (
	"encoding/json"
	"fmt"
	"github.com/erggo/datafiller"
)

type S struct {
	A string
	B struct {
		C string
		D string
		E int
	}
}

func main() {
	i := S{}
	datafiller.Fill(&i)
	b, err := json.Marshal(i)
	if err != nil {
		return
	}
	fmt.Println(string(b))
}

TODO

• simple types
• structs
• slices
• packages
• simple tagged structs
• maps
• smart tagged struct generation
• guessing names by names
• add documentation
• functions
• all types
• add options for filling such as slice length

Documentation

Overview

Package datafiller implements function for randomly filling passed datastructures by mock sample data.

Index

• func Fill(i interface{})
• func RandStringBytesMaskImpr(n int) string
• type ArrayMax
  • func (amx ArrayMax) AddArg(f *Filler)
• type ArrayMin
  • func (amn ArrayMin) AddArg(f *Filler)
• type Filler
  • func NewFiller(args ...FillerArg) *Filler
  • func (f *Filler) Fill(i interface{})
• type FillerArg
• type Seed
  • func (sed Seed) AddArg(f *Filler)

Functions

func Fill

func Fill(i interface{})

Function Fill takes a pointer to variable of any type and fills the variable by with sample data. It panics if the passed value is not a pointer.

func RandStringBytesMaskImpr

func RandStringBytesMaskImpr(n int) string

会产生大量的丢弃的case,造成重选和浪费。rand.Int63会产生63bit的随机数 如果我们把它分成6份，那么一次就可以产生10个6bit的随机数。这样就减少了浪费

Types

type ArrayMax

type ArrayMax int

func (ArrayMax) AddArg

func (amx ArrayMax) AddArg(f *Filler)

type ArrayMin

type ArrayMin int

func (ArrayMin) AddArg

func (amn ArrayMin) AddArg(f *Filler)

type Filler

type Filler struct {
	Seed int64

	ArrayMin int
	ArrayMax int
	// contains filtered or unexported fields
}

func NewFiller

func NewFiller(args ...FillerArg) *Filler

func (*Filler) Fill

func (f *Filler) Fill(i interface{})

type FillerArg

type FillerArg interface {
	AddArg(*Filler)
}

type Seed

type Seed int64

func (Seed) AddArg

func (sed Seed) AddArg(f *Filler)