Question

我正在尝试在我的Rails应用程序中使用Capybara和Cucumber。所以，这就是我所做的：

需要安装的宝石并将其添加到Gemfile
跑rails generate capybara:install --cucumber
为黄瓜创建了一个功能及其步骤定义

这是我的功能（是的，我正在创建博客应用程序）：

Feature: Browse posts
    So that I can browse through the posts
    As a visitor
    I want to see all and/or particular posts

    Scenario: Viewing all the posts
        Given Posts exist
        When I navigate to the website home
        Then I should see all the posts

    Scenario: Viewing particular post
        Given Post #1 exists
        When I navigate to /posts/view/1
        Then I should see the post with id=1

这是步骤定义：

Given /^Posts exist$/ do
    assert (not Post.all.empty?), "No posts found at all"
end

Given /^Post #(\d+) exists$) do |id|
    assert Post.find_by_id(id).valid?, "Post ##{ id } was not found at all"
end

When /^I navigate to (.+)$/ do |url|
    if url =~ /^the website home$/ then
        visit '/'
    else
        visit url
    end
end

Then /^I should see all(.+)posts$/ do |delimiter|
    posts = Post.all

    posts.each do |post|
        page.should have_content post.title
    end
end

Then /^I should see the post with id([^\d]{1,})(\d+)$/ do |delimiter, id|
    post = Post.find_by_id id

    page.should have_content post.title
end

运行rake cucumber时，我收到此消息：

Then I should see all the posts     # features/step_definitions/browsing_posts.rb:13
  undefined method `should' for #<Capybara::Session> (NoMethodError)
  ./features/step_definitions/browsing_posts.rb:17:in `block (2 levels) in <top (required)>'
  ./features/step_definitions/browsing_posts.rb:16:in `each'
  ./features/step_definitions/browsing_posts.rb:16:in `/^I should see all(.+)posts$/'
  features/browsing_posts.feature:9:in `Then I should see all the posts'

我做错了什么？是的，我的功能有任何错误吗？

Answer 1

将page.should have_content post.title替换为assert page.has_content?(post.title)。如果可行，则将其应用于其他have_content语句

编辑：那些statements involving should基于rspec expectations，只有在您已经在使用rspec或其他一些响应_ should的测试框架时才应该使用它们。从test :: unit角度来看，这可能只是另一种assert。

Answer 2

你可以尝试

吗？

page.has_content?('foo')

而不是

page.should has_content post.title

如果有效，那么你可以将它用于断言。

Answer 3

面对同样的问题我试过

expect(page).to have_content('foo')

对我来说很好用

当使用Capybara和Cucumber时，未定义的方法'应该'

3 个答案: