Rails: Minitest 测试在应该通过时失败了

Question

按照 Michael Hartl 的 Rails 教程，我正在 Rails.

中使用 Minitest 测试静态页面的 <title>

这是 static_pages_controller_test.rb 文件：

require 'test_helper'

class StaticPagesControllerTest < ActionController::TestCase
  test "should get home" do
    get :home
    assert_response :success
    assert_select "title", "Home | Microblog"
  end

  test "should get help" do
    get :help
    assert_response :success
    assert_select "title", "Help | Microblog"
  end

  test "should get about" do
    get :about
    assert_response :success
    assert_select "title", "About | Microblog"
  end

end

这是主页 home.html.erb 文件：

<!DOCTYPE html>
<html>
  <head>
    <title>Home | Microblog</title>
  </head>
  <body>
    <h1>Microblog</h1>
    <p>
        This is the homepage for Microblog, a brand new microblogging app.
    </p>
  </body>
</html>

help.html.erb和about.html.erb内容基本相同，略有不同。

因此，根据我的理解，测试应该会通过。

但是，当我运行 rake 时，我得到：

Run options: --seed 47355

# Running:

FFF

Finished in 0.112314s, 26.7109 runs/s, 53.4217 assertions/s.

  1) Failure:
StaticPagesControllerTest#test_should_get_home [/Users/TXC/code/microblog/test/controllers/static_pages_controller_test.rb:7]:
<Home | Microblog> expected but was
<Home | Microblog>..
Expected 0 to be >= 1.


  2) Failure:
StaticPagesControllerTest#test_should_get_help [/Users/TXC/code/microblog/test/controllers/static_pages_controller_test.rb:13]:
<Help | Microblog> expected but was
<Help | Microblog>..
Expected 0 to be >= 1.


  3) Failure:
StaticPagesControllerTest#test_should_get_about [/Users/TXC/code/microblog/test/controllers/static_pages_controller_test.rb:19]:
<About | Microblog> expected but was
<About | Microblog>..
Expected 0 to be >= 1.

3 runs, 6 assertions, 3 failures, 0 errors, 0 skips

特别是，我不明白为什么我得到：

<Home | Microblog> expected but was
    <Home | Microblog>..

我错过了什么？

更新：我继续学习教程并遵循高级测试设置部分中的指南。

这是我运行使用 Guard 进行所有测试时得到的结果：

[1] guard(main)> 
11:41:17 - INFO - Run all
11:41:17 - INFO - Running: all tests
Started

 FAIL["test_should_get_home", StaticPagesControllerTest, 2015-06-20 19:36:39 -0700]
 test_should_get_home#StaticPagesControllerTest (1434854199.36s)
        <Home | Microblog> expected but was
        <Home | Microblog>..
        Expected 0 to be >= 1.
        test/controllers/static_pages_controller_test.rb:7:in `block in <class:StaticPagesControllerTest>'

 FAIL["test_should_get_help", StaticPagesControllerTest, 2015-06-20 19:36:39 -0700]
 test_should_get_help#StaticPagesControllerTest (1434854199.37s)
        <Help | Microblog> expected but was
        <Help | Microblog>..
        Expected 0 to be >= 1.
        test/controllers/static_pages_controller_test.rb:13:in `block in <class:StaticPagesControllerTest>'

 FAIL["test_should_get_about", StaticPagesControllerTest, 2015-06-20 19:36:39 -0700]
 test_should_get_about#StaticPagesControllerTest (1434854199.38s)
        <About | Microblog> expected but was
        <About | Microblog>..
        Expected 0 to be >= 1.
        test/controllers/static_pages_controller_test.rb:19:in `block in <class:StaticPagesControllerTest>'

  3/3: [===================================] 100% Time: 00:00:00, Time: 00:00:00

Finished in 0.22498s
3 tests, 6 assertions, 3 failures, 0 errors, 0 skips

我一直在调查问题的原因，但到目前为止没有找到任何结论。

有什么想法吗？

Answer 1

我不明白你对竖线字符的评论，不在 <%= %> 之间。因为：您的文件没有使用 erb 测试 ''yielded' 标题。这将在本教程的后面发生。在这个测试中，你应该测试 'simple' html 格式。这可能是问题所在吗？

我记不清这次测试的具体内容了，但会不会是你的路由问题？

Answer 2

因此，我一直按照教程进行操作，在下一章（第 4 章）的某个时刻，我们创建了 full_title 帮助程序并删除了 <% provide(:title, "Home") %> 来自浏览量。

我不确定怎么做，但这解决了问题并使测试通过：

11:49:36 - INFO - Running: test/controllers/static_pages_controller_test.rb
Started

 FAIL["test_should_get_home", StaticPagesControllerTest, 2015-06-20 19:36:39 -0700]
 test_should_get_home#StaticPagesControllerTest (1434854199.39s)
        <Microblog> expected but was
        <Home | Microblog>..
        Expected 0 to be >= 1.
        test/controllers/static_pages_controller_test.rb:7:in `block in <class:StaticPagesControllerTest>'

  3/3: [===================================] 100% Time: 00:00:00, Time: 00:00:00

Finished in 0.21526s
3 tests, 6 assertions, 1 failures, 0 errors, 0 skips


11:50:15 - INFO - Running: test/controllers/static_pages_controller_test.rb
Started

  3/3: [===================================] 100% Time: 00:00:00, Time: 00:00:00

Finished in 0.21126s
3 tests, 6 assertions, 0 failures, 0 errors, 0 skips

如果您遇到同样的问题，希望对您有所帮助。

Rails: Minitest 测试在应该通过时失败了

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