+
+ describe "change_email/2" do
+ setup do
+ [user: insert(:user)]
+ end
+
+ test "blank email returns error", %{user: user} do
+ assert {:error, %{errors: [email: {"can't be blank", _}]}} = User.change_email(user, "")
+ assert {:error, %{errors: [email: {"can't be blank", _}]}} = User.change_email(user, nil)
+ end
+
+ test "non unique email returns error", %{user: user} do
+ %{email: email} = insert(:user)
+
+ assert {:error, %{errors: [email: {"has already been taken", _}]}} =
+ User.change_email(user, email)
+ end
+
+ test "invalid email returns error", %{user: user} do
+ assert {:error, %{errors: [email: {"has invalid format", _}]}} =
+ User.change_email(user, "cofe")
+ end
+
+ test "changes email", %{user: user} do
+ assert {:ok, %User{email: "cofe@cofe.party"}} = User.change_email(user, "cofe@cofe.party")
+ end
+ end