測試登出

spec/features/user_sign_out_spec.rb

測試已存在 User 到登入後，按下 Logout 按鈕，頁面不顯示 User 的 email。

新增一個 scenario 到 spec/features/user_authentication_spec.rb：

diff --git a/spec/features/user_authentication_spec.rb b/spec/features/user_authentication_spec.rb
index 29ef3b6..b68ee15 100644
--- a/spec/features/user_authentication_spec.rb
+++ b/spec/features/user_authentication_spec.rb
@@ -15,4 +15,21 @@ RSpec.feature "User authentication" do

     expect(page).to have_text "[email protected]"
   end
+
+  scenario "user signs out" do
+    create(:user, email: "[email protected]", password: "password")
+
+    visit "/users/sign_in"
+
+    within(".new_user") do
+      fill_in "Email", with: "[email protected]"
+      fill_in "Password", with: "password"
+    end
+
+    click_button "Log in"
+
+    click_link "Logout"
+
+    expect(page).not_to have_text "[email protected]"
+  end
 end

這裡使用了 click_link，因為 Logout 不是一個按鈕，而是一個 link。

可以使用 click_on，則 link & button 都適用。

參考：https://github.com/teamcapybara/capybara#clicking-links-and-buttons