如何为rails编写黄瓜（最佳实践）。功能和步骤

Question

我目前正在尝试学习黄瓜以及如何正确利用它。在搜索最佳实践时，描述了大多数旧方法，但我还没有真正找到好的指南。 我阅读了有关新方法的信息，但在最佳实践方面存在一些问题。

以下是我一直在研究的一些基本黄瓜场景。

Scenario: Unsuccessful login
    Given a user has an account
    When the user tries to log in with invalid information
    Then the user should see an log in error message

Scenario: Successful login
   Given a user has an account
   When the user logs in
   Then the user should see an log in success message
   And the user should see a sign out link

Scenario: Successful logout
   Given a signed in user
   Then the user logs out
   And the user should see an log out success message

我想知道这样可以吗？如果我应该写成“我访问”或“用户访问”或“他访问”我有问题 基本上首选什么？

其次，我想知道我应该如何制定以下内容：

Scenario: Visit profile of user
  Given a user
  And a second user
  When the user visit the user profile
  Then the user should see the name of the user

Scenario: Visit profile of another user
  Given a user
  And a second user
  When the user visit the second users profile
  Then the user should see the name of the second user

这只是我放在一起的东西，但我觉得这不是最好的方法。 我在步骤定义文件中遇到问题。您将如何定义处理场景的步骤？我想写一些更笼统的东西，但也许真的不可能？我应该有一个@second_user 属性还是你有什么建议？

def user
  @user ||= FactoryGirl.create :user
end

Given /^a signed in user$/ do
  user
  sign_in(@user.email, @user.password)
end

Given /^a user has an account$/ do
  user
end


When /^the user logs in$/ do
  sign_in(@user.email, @user.password)
end

When /^the user logs out$/ do
  click_link ('Sign out')
end

When /^the user tries to log in with invalid information$/ do
  sign_in("incorrect-email", "incorrect-password")
end

Then /^the user should see a sign out link$/ do
  page.should have_link('Sign out')
end

Then /^the user should see an log in success message$/ do
  should have_success_message('Signed in successfully.')
end

When /^the user should see an log out success message$/ do
  should have_success_message('Signed out successfully.')
end

Then /^the user should see an log in error message$/ do
  should have_error_message('Invalid email or password.')
end

感谢您帮助我！

Answer 1

如果我应该写成“我访问”或“用户访问”或“他访问”我有问题，基本上首选什么？

我认为使用“当用户访问时”之类的内容会更通用，并且更具可读性，因为您不必一直想“谁是 '他'？”如果您正在阅读测试，真正重要的是您在所有文件中都遵守一些约定，这样您就不会感到困惑。

关于您是否创建@second_user 的第二个问题，我认为您不应该，因为该用户不完全是您的场景的一部分，而是数据设置，我认为处理数据设置的最佳方式就是使用pickle with cucumber，它基本上可以让你在你的黄瓜中创建模型，而不必将它们作为变量保留，有一个great cast on RailsCast可以解释很多。

所以我会用泡菜来做这个

Scenario: Visit profile of another user
  Given a user exists with name: "Mike", username: "mike"
  And a signed in user
  When the user visits the profile of "mike"
  Then the user should see 'Mike'

那么你可以定义

When /^the user visits the profile of (.+)$/ do |username|
  visit("/#{username}") # I am assuming here usernames are unique and the profile url is "/:username"
end