faker: A Go repository from caioeverest

Faker is a Go library that generates fake data for you. Whether you need to bootstrap your database, create good-looking XML documents, fill-in your persistence to stress test it, or anonymize data taken from a production service, Faker is for you.

Faker is heavily inspired by PHP"s Faker

Faker requires Go >= 1.11

Test it in Go Playground

Start at https://play.golang.org/p/JpTagDGBaHK

Installation

Add this to your Go file

import "github.com/jaswdr/faker"

And run go get or dep ensure to get the package.

Basic Usage

Use faker.New() to create and initialize a faker generator, which can generate data by accessing properties named after the type of data you want.

import "github.com/jaswdr/faker"

func main() {
    faker := faker.New()

    faker.Person().Name()
    // Lucy Cechtelar

    faker.Address().Address()
    // 426 Jordy Lodge

    faker.Lorem().Text(100)
    // Dolores sit sint laboriosam dolorem culpa et autem. Beatae nam sunt fugit
    // et sit et mollitia sed.
    // Fuga deserunt tempora facere magni omnis. Omnis quia temporibus laudantium
    // sit minima sint.
}

Even if this example shows a method access, each call to faker.Name() yields a different (random) result.

p := faker.Person()

for i:=0; i < 10; i++ {
  fmt.Println(p.Name())
}
  // Adaline Reichel
  // Dr. Santa Prosacco DVM
  // Noemy Vandervort V
  // Lexi O"Conner
  // Gracie Weber
  // Roscoe Johns
  // Emmett Lebsack
  // Keegan Thiel
  // Wellington Koelpin II
  // Ms. Karley Kiehn V

You can also generate a profile image.

image := p.Image()

fmt.Println(image.Name())
// /tmp/profil-picture-img-1064677774.jfif

fmt.Printf("%+v", image)
// &{file:0xc0002e4300}

Generate fake data using Structs

type ExampleStruct struct {
	SimpleStringField string
	SimpleNumber int
	SimpleBool bool
	SomeFormatedString string `fake:"??? ###"`
	SomeStringArray [5]string `fake:"????"`
}

example := ExampleStruct{}
f.Struct().Fill(&example)
fmt.Printf("%+v", example)
//{SimpleStringField:87576a01c2a547b2bbf9b7c736d1db40 SimpleNumber:9223372036854775807 SimpleBool:false SomeFormatedString:cxo 321 SomeStringArray:[effr swxp ldnj obcs nvlg]}

Generate random placeholder images using LoremFlickr

// get a *os.File pointing to a file that is a random image
image := f.LoremFlickr().Image(100, 100, []string{}, "", false)

fmt.Println(image.Name())
// /tmp/loremflickr-img-4101493944.jpg

Generate profile images using ThisPersonDoesNotExist

profileImage := f.ProfileImage().Image()

fmt.Println(profileImage.Name())
// /tmp/profil-picture-img-4022222298.jfif

See more formatters in docs

Get involved

Have a question? Use the Discussions page.

Development

Create a fork and get the code.

$ go get github.com/jaswdr/faker

Do your changes, add tests, run the tests.

$ go test
PASS
ok      github.com/jaswdr/faker 0.010s

Push to your fork and send a new pull request from your fork to this repository.

License