Lasse Skindstad Ebert lasseebert

lasseebert / mock_example.ex

Created October 21, 2016 20:03

	defmodule MyTest do
	use ExUnit.Case, async: false

	import Mock

	test "multiple mocks" do
	with_mocks([
	{HashDict,
	[],
	[get: fn(%{}, "http://example.com") -> "<html></html>" end]},

lasseebert / elixir_injection_pact.ex

Created October 21, 2016 19:55

	defmodule InviteUser do
	def invite(email) do
	user = create(email)
	MyApp.Pact.get("mailer").send_activation_mail(user)
	end
	end

lasseebert / elixir_injection.ex

Created October 21, 2016 19:41

	defmodule InviteUser do
	def invite(email, mailer \\ Mailer) do
	user = create(email)
	mailer.send_activation_mail(user)
	end
	end

lasseebert / invite_user.rb

Last active October 21, 2016 19:29

	class InviteUser
	def initialize(mailer: Mailer.new, user_repo: UserRepo.new)
	@mailer = mailer
	@user_repo = user_repo
	end

	attr_reader :mailer
	attr_reader :user_repo

	def invite(email)

lasseebert / controller.ex

Created October 17, 2016 21:52

	defmodule MyApp.UserController do
	use MyApp.Web, :controller

	def create(conn, params) do
	attrs = %{email: params["email"]}

	case MyApp.Users.Invite.call(attrs) do
	{:ok, user} ->
	render_user(conn, user)
	{:error, :invalid_email} ->

lasseebert / controller.ex

Created October 17, 2016 21:46

	defmodule MyApp.UserController do
	use MyApp.Web, :controller

	def create(conn, params) do
	attrs = %{email: params["email"]}

	case MyApp.Users.Invite.call(attrs) do
	{:ok, user} ->
	render_user(conn, user)
	{:error, :invalid_email} ->

lasseebert / updated_logic.ex

Created October 17, 2016 21:41

	def call(%{email: email}) do
	with :ok <- validate_email(email) do
	email
	\|> build_changeset
	\|> create_user
	end
	end

	#...

lasseebert / test.exs

Created October 17, 2016 21:29

	test "it handles invalid email" do
	{:error, :invalid_email} = Invite.call(%{email: "Alice and Bob"})
	end

lasseebert / gist:f6b52c0b7de17df0de8a625a64dca441

Created October 17, 2016 21:27

	test "invalid email gives a 400 response" do
	conn =
	build_conn
	\|> post("/users", email: "Alice and Bob")

	body = conn \|> response(400) \|> Poison.decode!

	assert body["message"] == "email is invalid"
	end

lasseebert / gist:3ca079c94a57bc3a86c328ef0d79639a

Created October 17, 2016 20:33