Lasse Skindstad Ebert lasseebert

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 / 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 / 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 / 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 / mailer.ex

Created October 21, 2016 20:19

	defmodule MyApp.Mailer do
	use Mailgun.Client, [
	domain: Application.fetch_env!(:my_app, :mailgun_domain),
	key: Application.fetch_env!(:my_app, :mailgun_key)
	]

	@from "support@myapp.com"

	def send_test_mail(email) do
	{:ok, _} = send_email [

lasseebert / mailer_test.exs

Created October 21, 2016 20:37

	defmodule MyApp.MailerTest do
	use ExUnit.Case

	test "it uses mock in tests" do
	MyApp.Mailer.Mock.clear
	MyApp.Mailer.send_test_mail("me@example.com")

	assert MyApp.Mailer.Mock.mails \|> length == 1

	[mail] = MyApp.Mailer.Mock.mails

lasseebert / gist:291c01d2ba6c1a691865e65bc5d4f718

Created October 21, 2016 20:39

	$ mix test
	Compiling 16 files (.ex)

	== Compilation error on file lib/my_app/mailer.ex ==
	** (ArgumentError) application :my_app is not loaded, or the configuration parameter :mailgun_domain is not set
	(elixir) lib/application.ex:261: Application.fetch_env!/2
	lib/my_app/mailer.ex:3: (module)
	(stdlib) erl_eval.erl:670: :erl_eval.do_apply/6

lasseebert / mailer.ex

Created October 21, 2016 20:46

	defmodule MyApp.Mailer do
	@from "support@myapp.com"
	@mailer_impl Application.fetch_env!(:my_app, :mailer)

	defmodule Behaviour do
	@callback send_mail([key: String.t]) :: :ok
	end

	def send_test_mail(email) do
	:ok = @mailer_impl.send_mail(

lasseebert / mailgun.ex

Created October 21, 2016 20:52

	defmodule MyApp.Mailer.Mailgun do
	@behaviour MyApp.Mailer.Behaviour

	use Mailgun.Client, [
	domain: Application.fetch_env!(:my_app, :mailgun_domain),
	key: Application.fetch_env!(:my_app, :mailgun_key)
	]

	def send_mail(mail) do
	{:ok, _} = send_email(mail)

lasseebert / gist:3f6ad7bdfb8920b6fa65830814748ca3

Created October 21, 2016 20:57

	$ mix test
	Compiling 18 files (.ex)

	== Compilation error on file lib/my_app/mailer/mailgun.ex ==
	** (ArgumentError) application :my_app is not loaded, or the configuration parameter :mailgun_domain is not set
	(elixir) lib/application.ex:261: Application.fetch_env!/2
	lib/my_app/mailer/mailgun.ex:5: (module)
	(stdlib) erl_eval.erl:670: :erl_eval.do_apply/6