如何从控制台访问 Rails 测试帮助程序代码？
使用普通的 ActiveSupport::TestCase，我添加了几个在 test/test_helper.rb 中生成测试模型对象的帮助器方法。此文件中重新打开了包含帮助器方法的 ActiveSupport::TestCase。
现在假设我在 Ruby 控制台（或 pry，加载了 Rails 环境），并且我想摆弄这些测试方法。我可以加载文件：加载“test/test_helper.rb”，但我无法创建一个 TestCase 实例来让我访问这些测试方法来使用它们：
[4] pry(main)> tc = ActiveSupport::TestCase.new
ArgumentError: wrong number of arguments (0 for 1)
[5] pry(main)> tc = ActiveSupport::TestCase.new(1)
TypeError: 1 is not a symbol
[6] pry(main)> tc = ActiveSupport::TestCase.new(:unit)
ArgumentError: uncaught throw :invalid_test
我徒劳地尝试跟踪源代码中的面包屑痕迹文件来查找 TestCase 初始化方法，这样我就可以弄清楚它在这里坚持的内容。
有人可以帮助我如何思考这样的问题并找出解决方法吗？
Using vanilla ActiveSupport::TestCase, I've added several helper methods that generate test model objects in test/test_helper.rb. In this file is a reopening of ActiveSupport::TestCase that contains the helper methods.
Now suppose I'm in the Ruby Console (or pry, with the Rails environment loaded), and I want to fiddle with these test methods. I can load the file: load "test/test_helper.rb" but I can't create a TestCase instance that will let me access those test methods to play with them:
[4] pry(main)> tc = ActiveSupport::TestCase.new
ArgumentError: wrong number of arguments (0 for 1)
[5] pry(main)> tc = ActiveSupport::TestCase.new(1)
TypeError: 1 is not a symbol
[6] pry(main)> tc = ActiveSupport::TestCase.new(:unit)
ArgumentError: uncaught throw :invalid_test
I've tried in vain to follow the trail of breadcrumbs in source files to find the TestCase initialize method so I could figure out what it's insisting on here.
Can someone help me with how to think about problems like this and figure out a workaround?
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从此链接复制： https://gist.github.com/1297510
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On your terminal type:
对于您的具体情况，在我的 ActiveSupport (3.22.2.8) 版本中，我能够执行以下操作：
不过，一般来说，有几个选项：
pry这样的调试器可能会有所帮助，以单步执行通过这个问题。gem open activesupport查找源代码，或者通过gem 环境查找您的 gem 的安装位置。For your specific case, in my version of ActiveSupport (3.22.2.8), I was able to do the following:
In general though, there's several options:
prycan be helpful, to step through the issue.gem open activesupportor find where your gems are installed withgem environment