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Concurrent Feature Tests with Wallaby Chris Keathley / @ChrisKeathley / [email protected]

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Feature tests: Driving tests from the UI

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Name email Password Sign Up

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Name email Password Sign Up Fill in

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Name email Password Sign Up Fill in Click

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Thanks for signing up! Did this show up?

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Feature Tests

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Feature Tests Represent real users

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Feature Tests Represent real users Provide Confidence in the System

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Feature Tests Represent real users Provide Confidence in the System Dark Side

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Feature Tests Represent real users Provide Confidence in the System

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Feature Tests Represent real users Provide Confidence in the System (Sometimes)

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Feature Tests Represent real users Provide Confidence in the System (Sometimes) (When they aren’t randomly failing)

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Happens

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Feature Tests ARE Slow

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Wallaby

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Wallaby Manages multiple browsers Concurrent Assumes async Interfaces

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Wallaby TL;DR

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Name email Password Sign Up

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end Sessions Queries actions

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end Sessions Queries actions

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Wallaby Phoenix EcTo Test Sessions

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Wallaby Phoenix EcTo Test Sessions Browser

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Wallaby Phoenix EcTo Test Sessions Browser Browser

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Wallaby Phoenix EcTo Test Sessions Browser

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setup tags do {:ok, session} = Wallaby.start_session([]) on_exit, fn -> Wallaby.end_session(session) end {:ok, session: session} end

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Browser Browser Phoenix Ecto

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Browser Browser Phoenix Ecto

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Browser Browser Phoenix Ecto

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Browser Phoenix Ecto

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Browser Phoenix Ecto Ownership Metadata

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Browser Phoenix Ecto Ownership Metadata Transaction Ownership

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setup tags do {:ok, session} = Wallaby.start_session([]) on_exit, fn -> Wallaby.end_session(session) end {:ok, session: session} end

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setup tags do :ok = Ecto.Adapters.SQL.Sandbox.checkout(YourApp.Repo) metadata = Phoenix.Ecto.SQL.Sandbox.metadata_for( YourApp.Repo, self()) {:ok, session} = Wallaby.start_session(metadata: metadata) on_exit, fn -> Wallaby.end_session(session) end {:ok, session: session} end

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setup tags do :ok = Ecto.Adapters.SQL.Sandbox.checkout(YourApp.Repo) metadata = Phoenix.Ecto.SQL.Sandbox.metadata_for( YourApp.Repo, self()) {:ok, session} = Wallaby.start_session(metadata: metadata) on_exit, fn -> Wallaby.end_session(session) end {:ok, session: session} end

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setup tags do :ok = Ecto.Adapters.SQL.Sandbox.checkout(YourApp.Repo) metadata = Phoenix.Ecto.SQL.Sandbox.metadata_for( YourApp.Repo, self()) {:ok, session} = Wallaby.start_session(metadata: metadata) on_exit, fn -> Wallaby.end_session(session) end {:ok, session: session} end

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setup tags do :ok = Ecto.Adapters.SQL.Sandbox.checkout(YourApp.Repo) metadata = Phoenix.Ecto.SQL.Sandbox.metadata_for( YourApp.Repo, self()) {:ok, session} = Wallaby.start_session(metadata: metadata) on_exit, fn -> Wallaby.end_session(session) end {:ok, session: session} end

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defmodule YourApp.Endpoint do use Phoenix.Endpoint, otp_app: :your_app if Application.get_env(:your_app, :sql_sandbox) do plug Phoenix.Ecto.SQL.Sandbox end plug YourApp.Router end

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end Sessions Queries actions

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end Sessions Queries actions

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Thanks for signing up!

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Thanks for signing up!
Thanks for signing up!

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Thanks for signing up!
Thanks for signing up!
session |> find(“.alert")

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Thanks for signing up!
Thanks for signing up!
session |> find(“.alert")

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Grace Hopper [email protected]
Alan Turing [email protected]
HTML

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Grace Hopper [email protected]
Alan Turing [email protected]
HTML Test - User Names session

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Grace Hopper [email protected]
Alan Turing [email protected]
HTML Test - User Names session |> find(".user")

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Grace Hopper [email protected]
Alan Turing [email protected]
HTML Test - User Names session |> find(".user") Ambiguous

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Grace Hopper [email protected]
Alan Turing [email protected]
HTML Test - User Names session |> find(".user", count: 2)

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Grace Hopper [email protected]
Alan Turing [email protected]
HTML Test - User Names session |> find(".user", count: 2) |> Enum.map(& find(&1, ".name") )

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Grace Hopper [email protected]
Alan Turing [email protected]
HTML Test - User Names session |> find(".user", count: 2) |> Enum.map(& find(&1, ".name") ) |> Enum.map(& text(&1) ) # => ["Grace Hopper", "Alan Turing"]

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session HTML Test - Grace’s Email
Grace Hopper [email protected]
Alan Turing [email protected]

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session |> find(".user", text: "Grace Hopper") HTML Test - Grace’s Email
Grace Hopper [email protected]
Alan Turing [email protected]

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session |> find(".user", text: "Grace Hopper") |> find(".email") HTML Test - Grace’s Email
Grace Hopper [email protected]
Alan Turing [email protected]

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session |> find(".user", text: "Grace Hopper") |> find(".email") |> text # => "[email protected]" HTML Test - Grace’s Email
Grace Hopper [email protected]
Alan Turing [email protected]

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find(".user") ? Browser

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find(".user") JS Browser

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find(".user") JS Browser

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end Sessions Queries actions

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defmodule YourApp.UserRegistrationTest do use YourApp.AcceptanceCase, async: true test "users can register", %{session: session} do session |> visit("/users/new") |> find(".registration_form") |> fill_in("Full Name", with: "Grace Hopper") |> fill_in("Email", with: "[email protected]") |> fill_in("Password", with: "password") |> click("Register") msg_text = session |> find(".flash-message") |> text assert msg_text == "Welcome Grace Hopper" end end Sessions Queries actions

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Name Sign Up

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Name Register HTML

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HTML Name Register

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Name Register HTML Test session

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Name Register HTML Test session |> fill_in("Name", with: "Grace Hopper")

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Name Register HTML Test session |> fill_in("Name", with: "Grace Hopper") |> click_on("Register")

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HTML Test session |> fill_in(“user_name", with: "Grace Hopper") |> click_on("Register") Name Register

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HTML Test session |> fill_in(“user_name", with: "Grace Hopper") |> click_on("Register") Name Save login Register

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HTML Test session |> fill_in(“user_name", with: "Grace Hopper”) |> check("Save login") |> click_on("Register") Name Save login Register

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fill_in(session, "First Name", with: "Chris") choose(session, "Radio Button 1") check(session, "Checkbox") uncheck(session, "Checkbox") select(session, "My Awesome Select", option: "Option 1") click_on(session, "Some Button") attach_file(session, "File", path: "path/to/file") Other Actions

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Wallaby Sessions Queries Interactions

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Still More work to do!

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https://github.com/keathley/wallaby https://speakerdeck.com/keathley Getting Started

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Lets Build awesome stuff Together!

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THANKS Chris Keathley / @ChrisKeathley / [email protected]