harjitdotsingh / gofakeit

Random fake data generator written in go

Gofakeit

Random data generator written in go

Features

• 160+ Functions!!!
• Concurrent
• Global Rand
• Struct Generator
• Custom Functions
• Http Server
• Command Line Tool
• Zero dependencies
• Benchmarks
• Issue

Installation

go get github.com/brianvoe/gofakeit/v6

Simple Usage

import "github.com/brianvoe/gofakeit/v6"

gofakeit.Seed(0)

gofakeit.Name()             // Markus Moen
gofakeit.Email()            // [email protected]
gofakeit.Phone()            // [phone]
gofakeit.BS()               // front-end
gofakeit.BeerName()         // Duvel
gofakeit.Color()            // MediumOrchid
gofakeit.Company()          // Moen, Pagac and Wuckert
gofakeit.CreditCardNumber() // 4287271570245748
gofakeit.HackerPhrase()     // Connecting the array won't do anything, we need to generate the haptic COM driver!
gofakeit.JobTitle()         // Director
gofakeit.CurrencyShort()    // USD
// See full list below

Concurrent Struct

If you need to have independent randomization for the purposes of concurrency

import "github.com/brianvoe/gofakeit/v6"

faker := New(0) // or NewCrypto() to use crypto/rand

faker.Name()             // Markus Moen
faker.Email()            // [email protected]
faker.Phone()            // [phone]
faker.BS()               // front-end
faker.BeerName()         // Duvel
faker.Color()            // MediumOrchid
faker.Company()          // Moen, Pagac and Wuckert
faker.CreditCardNumber() // 4287271570245748
faker.HackerPhrase()     // Connecting the array won't do anything, we need to generate the haptic COM driver!
faker.JobTitle()         // Director
faker.CurrencyShort()    // USD
// See full list below

Global Rand Set

If you would like to use the simple function call but need to use something like crypto/rand you can override the default global with the type you want

import "github.com/brianvoe/gofakeit/v6"

faker := NewCrypto()
SetGlobalFaker(faker)

Struct

import "github.com/brianvoe/gofakeit/v6"

// Create structs with random injected data
type Foo struct {
	Bar      string
	Int      int
	Pointer  *int
	Name     string    `fake:"{firstname}"`         // Any available function all lowercase
	Sentence string    `fake:"{sentence:3}"`        // Can call with parameters
	RandStr  string    `fake:"{randomstring:[hello,world]}"`
	Number   string    `fake:"{number:1,10}"`       // Comma separated for multiple values
	Regex    string    `fake:"{regex:[abcdef]{5}}"` // Generate string from regex
	Skip     *string   `fake:"skip"`                // Set to "skip" to not generate data for
	Created  time.Time								// Can take in a fake tag as well as a format tag
	CreatedFormat  time.Time `fake:"{year}-{month}-{day}" format:"2006-01-02"`
}

type FooBar struct {
	Bars    []string `fake:"{name}"`              // Array of random size (1-10) with fake function applied
	Foos    []Foo    `fakesize:"3"`               // Array of size specified with faked struct
	FooBars []Foo    `fake:"{name}" fakesize:"3"` // Array of size 3 with fake function applied
}

// Pass your struct as a pointer
var f Foo
gofakeit.Struct(&f)
fmt.Println(f.Bar)      		// hrukpttuezptneuvunh
fmt.Println(f.Int)      		// -7825289004089916589
fmt.Println(*f.Pointer) 		// -343806609094473732
fmt.Println(f.Name)     		// fred
fmt.Println(f.Sentence) 		// Record river mind.
fmt.Println(f.RandStr)  		// world
fmt.Println(f.Number)   		// 4
fmt.Println(f.Regex)    		// cbdfc
fmt.Println(f.Skip)     		// <nil>
fmt.Println(f.Created.String()) // 1908-12-07 04:14:25.685339029 +0000 UTC

var fb FooBar
gofakeit.Struct(&fb)
fmt.Println(fb.Bars)      // [Charlie Senger]
fmt.Println(fb.Foos)      // [{blmfxy -2585154718894894116 0xc000317bc0 Emmy Attitude demand addition. hello 3 <nil>} {cplbf -1722374676852125164 0xc000317cb0 Viva Addition option link. hello 7 <nil>}]

// Supported formats - Array and pointers as well
// int, int8, int16, int32, int64,
// float32, float64,
// bool, string,
// time.Time // If setting time you can also set a format tag
// Nested Struct Fields and Embeded Fields

Custom Functions

// Simple
AddFuncLookup("friendname", Info{
	Category:    "custom",
	Description: "Random friend name",
	Example:     "bill",
	Output:      "string",
	Generate: func(r *rand.Rand, m *MapParams, info *Info) (interface{}, error) {
		return RandomString([]string{"bill", "bob", "sally"}), nil
	},
})

// With Params
AddFuncLookup("jumbleword", Info{
	Category:    "jumbleword",
	Description: "Take a word and jumple it up",
	Example:     "loredlowlh",
	Output:      "string",
	Params: []Param{
		{Field: "word", Type: "int", Description: "Word you want to jumble"},
	},
	Generate: func(r *rand.Rand, m *MapParams, info *Info) (interface{}, error) {
		word, err := info.GetString(m, "word")
		if err != nil {
			return nil, err
		}

		split := strings.Split(word, "")
		ShuffleStrings(split)
		return strings.Join(split, ""), nil
	},
})

type Foo struct {
	FriendName string `fake:"{friendname}"`
	JumbleWord string `fake:"{jumbleword:helloworld}"`
}

var f Foo
Struct(&f)
fmt.Printf("%s", f.FriendName) // bill
fmt.Printf("%s", f.JumbleWord) // loredlowlh

Functions

All functions also exist as methods on the Faker struct

File

JSON(jo *JSONOptions) ([]byte, error)
XML(xo *XMLOptions) ([]byte, error)
FileExtension() string
FileMimeType() string

Person

Person() *PersonInfo
Name() string
NamePrefix() string
NameSuffix() string
FirstName() string
LastName() string
Gender() string
SSN() string
Contact() *ContactInfo
Email() string
Phone() string
PhoneFormatted() string
Teams(peopleArray []string, teamsArray []string) map[string][]string

Generate

Struct(v interface{})
Slice(v interface{})
Map() map[string]interface{}
Generate(value string) string
Regex(value string) string

Auth

Username() string
Password(lower bool, upper bool, numeric bool, special bool, space bool, num int) string

Address

Address() *AddressInfo
City() string
Country() string
CountryAbr() string
State() string
StateAbr() string
Street() string
StreetName() string
StreetNumber() string
StreetPrefix() string
StreetSuffix() string
Zip() string
Latitude() float64
LatitudeInRange(min, max float64) (float64, error)
Longitude() float64
LongitudeInRange(min, max float64) (float64, error)

Game

Gamertag() string

Beer

BeerAlcohol() string
BeerBlg() string
BeerHop() string
BeerIbu() string
BeerMalt() string
BeerName() string
BeerStyle() string
BeerYeast() string

Car

Car() *CarInfo
CarMaker() string
CarModel() string
CarType() string
CarFuelType() string
CarTransmissionType() string

Words

Noun() string
Verb() string
Adverb() string
Preposition() string
Adjective() string
Word() string
Sentence(wordCount int) string
Paragraph(paragraphCount int, sentenceCount int, wordCount int, separator string) string
LoremIpsumWord() string
LoremIpsumSentence(wordCount int) string
LoremIpsumParagraph(paragraphCount int, sentenceCount int, wordCount int, separator string) string
Question() string
Quote() string
Phrase() string

Foods

Fruit() string
Vegetable() string
Breakfast() string
Lunch() string
Dinner() string
Snack() string
Dessert() string

Misc

Bool() bool
UUID() string
FlipACoin() string
ShuffleAnySlice(v interface{})

Colors

Color() string
HexColor() string
RGBColor() []int
SafeColor() string

Internet

URL() string
DomainName() string
DomainSuffix() string
IPv4Address() string
IPv6Address() string
MacAddress() string
HTTPStatusCode() string
HTTPStatusCodeSimple() int
LogLevel(logType string) string
HTTPMethod() string
UserAgent() string
ChromeUserAgent() string
FirefoxUserAgent() string
OperaUserAgent() string
SafariUserAgent() string

Date/Time

Date() time.Time
DateRange(start, end time.Time) time.Time
NanoSecond() int
Second() int
Minute() int
Hour() int
Month() int
MonthString() string
Day() int
WeekDay() string
Year() int
TimeZone() string
TimeZoneAbv() string
TimeZoneFull() string
TimeZoneOffset() float32
TimeZoneRegion() string

Payment

Price(min, max float64) float64
CreditCard() *CreditCardInfo
CreditCardCvv() string
CreditCardExp() string
CreditCardNumber(*CreditCardOptions) string
CreditCardType() string
Currency() *CurrencyInfo
CurrencyLong() string
CurrencyShort() string
AchRouting() string
AchAccount() string
BitcoinAddress() string
BitcoinPrivateKey() string

Company

BS() string
BuzzWord() string
Company() string
CompanySuffix() string
Job() *JobInfo
JobDescriptor() string
JobLevel() string
JobTitle() string

Hacker

HackerAbbreviation() string
HackerAdjective() string
Hackeringverb() string
HackerNoun() string
HackerPhrase() string
HackerVerb() string

Hipster

HipsterWord() string
HipsterSentence(wordCount int) string
HipsterParagraph(paragraphCount int, sentenceCount int, wordCount int, separator string) string

App

AppName() string
AppVersion() string
AppAuthor() string

Animal

PetName() string
Animal() string
AnimalType() string
FarmAnimal() string
Cat() string
Dog() string

Emoji

Emoji() string
EmojiDescription() string
EmojiCategory() string
EmojiAlias() string
EmojiTag() string

Language

Language() string
LanguageAbbreviation() string
ProgrammingLanguage() string
ProgrammingLanguageBest() string

Number

Number(min int, max int) int
Int8() int8
Int16() int16
Int32() int32
Int64() int64
Uint8() uint8
Uint16() uint16
Uint32() uint32
Uint64() uint64
Float32() float32
Float32Range(min, max float32) float32
Float64() float64
Float64Range(min, max float64) float64
ShuffleInts(a []int)
RandomInt(i []int) int

String

Digit() string
DigitN(n uint) string
Letter() string
LetterN(n uint) string
Lexify(str string) string
Numerify(str string) string
ShuffleStrings(a []string)
RandomString(a []string) string