Move user creation in tests to a factory

test/features/games_test.exs

@@ -2,8 +2,7 @@ defmodule Chess.GamesTest do
   use ChessWeb.FeatureCase
 
   import Wallaby.Query, only: [css: 1, css: 2, button: 1, text_field: 1]
-
-  alias Chess.Auth.User
+  import Chess.Factory, only: [create_user: 0]
 
   test "visit homepage", %{session: session} do
     session
@@ -44,14 +43,6 @@ defmodule Chess.GamesTest do
     |> click(button("Log in"))
   end
 
-  defp create_user() do
-    changeset = User.changeset(
-      %User{},
-      %{username: "link@hyrule.kingdom", password: "ilovezelda"}
-    )
-    Repo.insert!(changeset)
-  end
-
   defp create_game(session) do
     session
     |> visit("/games")

test/features/session_test.exs

@@ -1,9 +1,8 @@
 defmodule Chess.SessionTest do
   use ChessWeb.FeatureCase
 
-  alias Chess.Auth.User
-
   import Wallaby.Query, only: [text_field: 1, link: 1, button: 1]
+  import Chess.Factory, only: [create_user: 0]
 
   test "user cannot log in with incorrect username", %{session: session} do
     create_user()
@@ -62,12 +61,4 @@ defmodule Chess.SessionTest do
 
     assert session |> has_text?("You are logged out")
   end
-
-  defp create_user() do
-    changeset = User.changeset(
-      %User{},
-      %{username: "link@hyrule.kingdom", password: "ilovezelda"}
-    )
-    Repo.insert!(changeset)
-  end
 end

test/support/factory.ex

@@ -0,0 +1,12 @@
+defmodule Chess.Factory do
+  alias Chess.Auth.User
+  alias Chess.Repo
+
+  def create_user do
+    User.changeset(
+      %User{},
+      %{username: "link@hyrule.kingdom", password: "ilovezelda"}
+    )
+    |> Repo.insert!
+  end
+end