Description
FakerElixir is an Elixir package that generates fake data for you. Whether you need to seed your database, create factories for your project, FakerElixir is here for you .
FakerElixir alternatives and similar packages
Based on the "Testing" category.
Alternatively, view FakerElixir alternatives based on common mentions on social networks and blogs.
-
bypass
Bypass provides a quick way to create a custom plug that can be put in place instead of an actual HTTP server to return prebaked responses to client requests. -
mix_test_interactive
Interactive watch mode for Elixir's mix test. https://hexdocs.pm/mix_test_interactive/ -
mecks_unit
A simple Elixir package to elegantly mock module functions within (asynchronous) ExUnit tests using Erlang's :meck library
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README
:octopus: FakerElixir
FakerElixir is an Elixir package that generates fake data for you. Whether you need to seed your database, create factories for your project, FakerElixir is here for you :punch:.
If you like this library ... you could star it :star2:
Installation
Can't wait to generate some fake data ? Follow the steps:
- Add
faker_elixir_octopus
to your list of dependencies inmix.exs
:
def deps do
[{:faker_elixir_octopus, "~> 1.0.0", only: [:dev, :test]}]
end
- Ensure
faker_elixir_octopus
is started before your application:
def application do
[applications: [:faker_elixir_octopus]]
end
Note: This step can be skipped if you are using Elixir 1.4+ (see CHANGELOG#application-inference).
- Run in the root of your project:
$ mix deps.get
- Faker Elixir is now a part of your application and ready to use!
Usage
Since I'm quite sure you are using Phoenix, I will show you a basic example:
defmodule Zombie.AwesomeController do
use Zombie.Web, :controller
def index(conn, _params) do
text conn, FakerElixir.Helper.pick(["zombie", "human"])
end
end
Now if you keep refreshing your browser, the value should change. Awesome, you just understood how to use Faker :clap:.
:speech_balloon: "Sounds cool, but what about that FakerElixir
namespace, it's quite boring to write that everytime :confused:"
You are right, you could use alias
of elixir:
defmodule Zombie.AwesomeController do
use Zombie.Web, :controller
alias FakerElixir, as: Faker
def index(conn, _params) do
text conn, Faker.Helper.pick(["zombie", "human"])
end
end
:speech_balloon: "I followed the steps to install the package, but it doesn't work :angry: !!"
I guess you have an error similar to something .... Store.has?() ..... something
. Well you just forgot to add :faker_elixir_octopus
:
# mix.exs file
def application do
[mod: {Test, []},
applications: [:phoenix, :phoenix_html, :cowboy, :logger, :gettext,
:phoenix_ecto, :postgrex, :faker_elixir_octopus]] # <---- here
end
Cheatsheet
Each functions of FakerElixir are well documented here: documentation.
But I know you, you will forget the syntax to generate a city and so on ... Don't waste your time in the documentation, just use this simple cheatsheet:
- Faker.Address
- Faker.App
- Faker.Avatar
- Faker.Bank
- Faker.Boolean
- Faker.Color
- Faker.Commerce
- Faker.Crypto
- Faker.Currency
- Faker.Date
- Faker.File
- Faker.Helper
- Faker.Internet
- Faker.Lorem
- Faker.Name
- Faker.Number
- Faker.Phone
FakerElixir.Address
FakerElixir.Address.building_number # "542"
FakerElixir.Address.city # "Portland"
FakerElixir.Address.country # "Iceland"
FakerElixir.Address.country_code # "NY"
FakerElixir.Address.latitude # -71.67369045432866
FakerElixir.Address.longitude # -114.67722189422487
FakerElixir.Address.make_country # %{code: "MY", name: "Malaysia"}
FakerElixir.Address.secondary_address # "Apt. 752"
FakerElixir.Address.state # "New Jersey"
FakerElixir.Address.state_code # "TX"
FakerElixir.Address.street_address # "786 Willow Parkways"
FakerElixir.Address.street_name # "McLaughlin Mills"
FakerElixir.Address.street_suffix # "Lodge"
FakerElixir.Address.time_zone # "Europe/Sarajevo"
FakerElixir.Address.zip_code # "59146-7626"
FakerElixir.App
FakerElixir.App.author # "Antonio Konopelski"
FakerElixir.App.name # "Chocolada"
FakerElixir.App.version # "8.1.7"
FakerElixir.Avatar
FakerElixir.Avatar.robohash # "https://robohash.org/fceuxke.png?size=300x300"
FakerElixir.Avatar.robohash("zombies-must-die") # "https://robohash.org/zombies-must-die.png?size=300x300"
FakerElixir.Avatar.robohash("zombies-forever", "400x400") # "https://robohash.org/zombies-forever.png?size=400x400"
FakerElixir.Avatar.robohash("i-love-a-zombie", "300x300", "jpg") # "https://robohash.org/i-love-a-zombie.jpg?size=300x300"
FakerElixir.Avatar.robohash("boring-slug", "230x230", "bmp", "set1") # "https://robohash.org/boring-slug.bmp?size=230x230&set=set1"
FakerElixir.Avatar.robohash("ahahahaha", "198x198", "jpg", "set2", "bg2") # "https://robohash.org/ahahahaha.jpg?size=198x198&set=set2&bgset=bg2"
FakerElixir.Bank
FakerElixir.Bank.credit_card_cvv # 914
# Context: 22 august 2016
FakerElixir.Bank.credit_card_expiration_date # "08/2017"
FakerElixir.Bank.credit_card_expiration_date(:valid) # "06/2023"
FakerElixir.Bank.credit_card_expiration_date(:invalid) # "12/2011"
FakerElixir.Bank.credit_card_number # "34521702751096"
FakerElixir.Bank.credit_card_type # "MasterCard"
FakerElixir.Bank.make_credit_card # %{cvv: "188", expiration_date: "12/2006", name: "LLEWELLYN WEBER", number: "601141761193874", type: "Discover Card"}
FakerElixir.Bank.name # "Goldman Sachs Group"
FakerElixir.Boolean
FakerElixir.Boolean.boolean # true
# Return a boolean with a ratio chance to be true
# 1 = always true / 0 = always false / 0.1 = 10% chance to be true
FakerElixir.Boolean.boolean(1) # true
FakerElixir.Boolean.boolean(0) # false
FakerElixir.Boolean.boolean(0.1) # false
FakerElixir.Color
FakerElixir.Color.hex # "#1671B0"
FakerElixir.Color.hsl # "hsl(130, 40%, 41%)"
FakerElixir.Color.make_hsl # [236, "13%", "77%"]
FakerElixir.Color.rgb # "rgb(152, 228, 47)"
FakerElixir.Color.make_rgb # [65, 137, 5]
FakerElixir.Color.name # "white"
FakerElixir.Commerce
FakerElixir.Commerce.coupon # "AmazingDeal35"
FakerElixir.Commerce.coupon(5) # "AmazingDeal20250"
FakerElixir.Commerce.product # "Sleek Frozen Table"
FakerElixir.Commerce.sku # "4OY026FR"
FakerElixir.Crypto
FakerElixir.Crypto.md5 # "9FE3CFD7113162785ED3D59C73166766"
FakerElixir.Crypto.sha1 # "7D6757DDD455FC6AA25C0D78C1CDE73B21028CD7"
FakerElixir.Crypto.sha224 # "824B34965B6A3E48BE71E09A54F63BC216845D794EB378E756EE759D"
FakerElixir.Crypto.sha256 # "4762E04FB860A8A7C4D58B495DE133355D069CF618A55BBACA98583DF105818C"
FakerElixir.Crypto.sha384 # "9C01EBA98F4A52F76948D48A0FB3C63C26DE451667F8957C6420B6D26183F93C28A3A344406C77FF74C877EE5AA3AD10"
FakerElixir.Crypto.sha512 # "06C1CC54DC49E53B1274D9A0DD951B76DD45731E0AB319D98575DEA1955F6A0B20D5B70548190119AED52A5254127A60511257673C332F759F9510B8F32AAC26"
FakerElixir.Currency
FakerElixir.Currency.code # "ZMK"
FakerElixir.Currency.make # %{code: "UAH", country: "Ukraine", name: "Ukrainian Hryvnia", symbol: "โด"}
FakerElixir.Currency.name # "East Caribbean Dollar"
FakerElixir.Currency.symbol # "โฌ"
FakerElixir.Date
# Generate a random date time for yesterday
FakerElixir.Date.backward(1) # "2016-08-18 05:58:04Z"
# Generate a random date time between yesterday and the day before yesterday
FakerElixir.Date.backward(1..2) # "2016-08-17 03:48:32Z"
FakerElixir.Date.birthday # "1988-03-07 16:28:37Z"
FakerElixir.Date.forward(1) # "2016-08-20 19:29:28Z"
FakerElixir.Date.forward(1..2) # "2016-08-20 11:18:18Z"
FakerElixir.File
FakerElixir.File.extension # "png"
# Allowed: :image, :audio, :text, :video, :office
FakerElixir.File.extension(:audio) # "mp3"
FakerElixir.File.mime # "application/javascript"
# Allowed: :application, :audio, :image, :message, :model, :multipart, :text, :video
FakerElixir.File.mime(:message) # "message/rfc822"
FakerElixir.File.name # "aut.css"
# Allowed: :image, :audio, :text, :video, :office
FakerElixir.File.name(:video) # "mollitia.avi""
FakerElixir.Helper
# Check out the documentation for this helper:
# https://hexdocs.pm/faker_elixir_octopus/FakerElixir.Helper.html#cycle/2
FakerElixir.Helper.cycle(:zombies, ["Peter", "Audrey"]) # "Peter"
FakerElixir.Helper.cycle(:zombies, ["Peter", "Audrey"]) # "Audrey"
FakerElixir.Helper.cycle(:zombies, ["Peter", "Audrey"]) # "Peter"
FakerElixir.Helper.letterify("#.#.#.#") # "k.e.n.u"
FakerElixir.Helper.numerify("Apt. ###") # "Apt. 902"
FakerElixir.Helper.pick(["paris", "athens", "london"]) # "london"
FakerElixir.Helper.pick(0..100) # 51
# Check out the documentation for this helper:
# https://hexdocs.pm/faker_elixir_octopus/FakerElixir.Helper.html#unique!/2
FakerElixir.Helper.unique!(:emails, fn -> FakerElixir.Internet.email(:popular) end) # "[email protected]"
FakerElixir.Internet
FakerElixir.Internet.email # "[email protected]"
FakerElixir.Internet.email("Peter Moleski") # "[email protected]"
FakerElixir.Internet.email(:popular) # "[email protected]"
FakerElixir.Internet.email(:popular, "Peter Sobieska") # "[email protected]"
FakerElixir.Internet.email(:school) # "[email protected]"
FakerElixir.Internet.email(:school, "Harry Potter") "[email protected]"
FakerElixir.Internet.password(:weak) # "robbie"
FakerElixir.Internet.password(:normal) # "francesco6"
FakerElixir.Internet.password(:strong) # "tOu%Mt*B16ueLs!0uA3rDA"
FakerElixir.Internet.url # "http://www.alejandra-connelly.com/"
FakerElixir.Internet.url(:safe) # "https://www.stefan-little.org/"
FakerElixir.Internet.user_name # "chadrick"
FakerElixir.Internet.user_name("Jeremie GES") # "jeremie.ges"
FakerElixir.Internet.user_agent # "Mozilla/5.0 (iPad; CPU OS 8_1 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12B411 Safari/600.1.4"
# Allowed: :bot, :browser, :chrome, :desktop, :firefox, :console, :ie, :opera, :phone, :playstation, :safari, :tablet, :wii, :xbox
FakerElixir.Internet.user_agent(:safari) # "Mozilla/5.0 (iPad; CPU OS 8_1_1 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12B436 Safari/600.1.4"
FakerElixir.Lorem
FakerElixir.Lorem.character # "c"
FakerElixir.Lorem.characters # "0ycp0x"
FakerElixir.Lorem.characters(2) # "rj"
FakerElixir.Lorem.characters(10..30) # "rhch0bceu38240vds"
FakerElixir.Lorem.sentence # "Qui maiores quaerat iusto quod in totam consequatur perspiciatis necessitatibus vitae."
FakerElixir.Lorem.sentences(2) # "Qui omnis distinctio optio quisquam non optio id sequi assumenda corrupti distinctio et et inventore libero mollitia et. Cum doloremque sapiente mollitia nulla harum pariatur natus voluptates maxime consequuntur sunt commodi blanditiis ut nam."
FakerElixir.Lorem.sentences(3..5) # "Culpa velit labore tenetur quia ipsum ullam dolore ut et commodi. Fuga quia dolore nihil non laudantium molestias nemo voluptas ea voluptatum aut aspernatur voluptatem. Repellendus illo dolorem incidunt quasi possimus quam quae alias recusandae unde aliquam optio rem velit sint eum. Quo aliquid itaque ratione eum blanditiis commodi explicabo perspiciatis nesciunt pariatur dolor eius voluptas."
FakerElixir.Lorem.word # "et"
FakerElixir.Lorem.words # "pariatur ea eos quibusdam velit debitis et"
FakerElixir.Lorem.words(3) # "sapiente optio dolor"
FakerElixir.Lorem.words(2..4) # "laudantium rem saepe qui"
FakerElixir.Name
FakerElixir.Name.first_name # "Ari"
FakerElixir.Name.last_name # "Miller"
FakerElixir.Name.name # "Louie Corkery"
FakerElixir.Name.name_with_middle # "Annalise Francesco Schowalter"
FakerElixir.Name.prefix # "Mr."
FakerElixir.Name.suffix # "PhD"
FakerElixir.Name.title # "Principal Branding Orchestrator"
FakerElixir.Number
FakerElixir.Number.between(15..150) # 130
FakerElixir.Number.between(15, 150) # 18
FakerElixir.Number.between(11.22, 13.88) # 11.24
FakerElixir.Number.between(12, 12.35) # 12.11
FakerElixir.Number.decimal # "70.8"
# 3 left digits
FakerElixir.Number.decimal(3) # "918.43"
# 1 left digit and 3 right digits
FakerElixir.Number.decimal(1, 3) # "2.298"
FakerElixir.Number.digit # 3
FakerElixir.Number.digits # 452
# 4 digits please!
FakerElixir.Number.digits(4) # 7025
FakerElixir.Phone
FakerElixir.Phone.cell # "1-714-443-8836"
FakerElixir.Phone.home # "355.369.3998 x19434"
Locales
General
The default locale used by FakerElixir is :en
. Right now only 4 locales are available: :fr
, :en
, :es
, :it
.
If you set a different locale, FakerElixir will just fallback to :en
(If you didn't provide a custom locale)
Note: Keep in mind you can set the locale at the runtime, the locale set will keep his state until you set another locale.
Basic example
FakerElixir.set_locale(:en) # :ok
FakerElixir.Address.city # "Baltimore"
FakerElixir.set_locale(:fr) # :ok
FakerElixir.Address.city # "Issy-les-Moulineaux"
FakerElixir.set_locale(:es) # :ok
FakerElixir.get_locale # :es
Phoenix Example
defmodule Zombie.AwesomeController do
use Zombie.Web, :controller
alias FakerElixir, as: Faker
def index(conn, _params) do
Faker.set_locale(:en)
city_en = Faker.Address.city
Faker.set_locale(:fr)
city_fr = Faker.Address.city
text conn, "#{city_en} / #{city_fr}"
end
end
# Will produce something like: Charlotte / Courbevoie
Custom locale
Since this package is quite new we don't have enough locales out of the box. It could be possible you don't like the data provided too. That's why we let you the possibility to define / update the data !
Add a new locale
Let's say you are spanish and you want to create the :es
locale, you just need to define a new module in your elixir / mix project:
# locales/faker_elixir/es.ex
# It doesn't matter where you define your module tho.
defmodule FakerElixir.LocalesCustom.Es do
# Let's "localize" the cities
@cities ["Barcelona", "Madrid", "La Jonquera"]
def cities, do: cities
end
Now when you will set the locale :es
, FakerElixir will pick your data:
defmodule Test do
alias FakerElixir, as: Faker
def try do
Faker.set_locale(:es)
Faker.Address.city # Barcelona
end
end
Edit a locale
Let's say you want to update the locale :fr
for the method FakerElixir.Address.secondary_address
:
# locales/faker_elixir/fr.ex
# It doesn't matter where you define your module tho.
defmodule FakerElixir.LocalesCustom.Fr do
@secondary_addresses ["Sonnette. ##"]
def secondary_addresses, do: @secondary_addresses
end
Now when you will set the locale :fr
, FakerElixir will pick your data:
defmodule Test do
alias FakerElixir, as: Faker
def try do
Faker.set_locale(:fr)
Faker.Address.secondary_address # Sonnette. 12
end
end
Skeleton
The default skeleton for a locale is available here: Skeleton
Customisation
:speech_balloon: "Hey dude, your package is "great" but you forgot that, that and ... that, whaddup ? :sunglasses:"
Well, depending the domain of your application, sure you will need some other fake data. That's why FakerElixir
provides some useful things such as: FakerElixir.get_locale/0
and the FakerElixir.Helper
module.
You could create your own module inside your application:
defmodule FakerElixir.Custom do
@pokemons_en ["Charizard", "Bulbasaur", "Charmander"]
@pokemons_fr ["Dracaufeu", "Bulbizarre", "Salameche"]
def pokemon do
locale = FakerElixir.get_locale
case locale do
:fr ->
FakerElixir.Helper.pick(@pokemons_fr)
_ ->
FakerElixir.Helper.pick(@pokemons_en)
end
end
end
... and just call your module! iex> FakerElixir.Custom.pokemon
Hope it helps :yum:
Contributors
We :heart: contributors, send us a pull request and maybe we will ... merge it :beer: !