Question

所以我创建了dotfiles目录，然后创建了cd到dotfiles。然而，黄瓜aruba给我一个错误，说dotfiles不是目录。我无法弄清楚为什么会这样？ pry中的代码会导致正确的行为。

  @creation
  Scenario: Create a dotfiles git repository
    Given the directory dotfiles does not exist in the home directory
    When I successfully run `dotfiles init dotfile_one dotfile_two dotfile_three`
    Then a dotfiles directory should exist in the home directory
    When I change directory to the dotfiles directory ### Fails here ###
    Then a file named ".git" should exist

我的步骤

Given /^the directory dotfiles does not exist in the home directory$/ do
  step %(a directory named "#{ENV['HOME']}/dotfiles" should not exist)
end

Then /^a dotfiles directory should exist in the home directory$/ do
  step %(a directory named "#{ENV['HOME']}/dotfiles" should exist)
end

When /^I change directory to the dotfiles directory$/ do
  step %(I cd to "#{ENV['HOME']}/dotfiles")
end

挂钩之前

：

Before('@creation') do
  FileUtils.rm_rf(File.join(ENV['HOME'], 'dotfiles'))
end

来源

module Dotfiles
  class Repository

    def self.init(location, dotfiles)
      # create the dotfiles directory and git init
      FileUtils.chdir(location) do
        FileUtils.mkdir_p(File.join location, 'dotfiles')
      end
      FileUtils.chdir(File.join location, 'dotfiles')
    end

  end
end

错误的简短版本

When I change directory to the dotfiles directory                             # features/step_definitions/aruba_steps.rb:13
      tmp/aruba/Users/Brian/dotfiles is not a directory. (RuntimeError)

以下是完整跟踪错误

@creation
  Scenario: Create a dotfiles git repository                                      # features/dotfiles_repository.feature:6
    Given the directory dotfiles does not exist in the home directory             # features/step_definitions/aruba_steps.rb:5
    When I successfully run `dotfiles init dotfile_one dotfile_two dotfile_three` # aruba-0.5.3/lib/aruba/cucumber.rb:71
    Then a dotfiles directory should exist in the home directory                  # features/step_definitions/aruba_steps.rb:9
    When I change directory to the dotfiles directory                             # features/step_definitions/aruba_steps.rb:13
      tmp/aruba/Users/Brian/dotfiles is not a directory. (RuntimeError)
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/aruba-0.5.3/lib/aruba/api.rb:22:in `cd'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/aruba-0.5.3/lib/aruba/cucumber.rb:52:in `block in <top (required)>'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:48:in `instance_exec'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:48:in `block in cucumber_instance_exec'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:69:in `cucumber_run_with_backtrace_filtering'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:36:in `cucumber_instance_exec'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/rb_support/rb_step_definition.rb:97:in `invoke'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/step_match.rb:25:in `invoke'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime/support_code.rb:60:in `invoke'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/rb_support/rb_world.rb:52:in `step'
      /Users/Brian/gems/dotfiles/features/step_definitions/aruba_steps.rb:14:in `block in <top (required)>'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:48:in `instance_exec'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:48:in `block in cucumber_instance_exec'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:69:in `cucumber_run_with_backtrace_filtering'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/core_ext/instance_exec.rb:36:in `cucumber_instance_exec'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/rb_support/rb_step_definition.rb:97:in `invoke'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/step_match.rb:25:in `invoke'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/step_invocation.rb:60:in `invoke'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/step_invocation.rb:38:in `accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:106:in `block in visit_step'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:170:in `broadcast'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:105:in `visit_step'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/step_collection.rb:19:in `block in accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/step_collection.rb:18:in `each'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/step_collection.rb:18:in `accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:100:in `block in visit_steps'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:170:in `broadcast'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:99:in `visit_steps'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:15:in `block in execute'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime.rb:82:in `block (2 levels) in with_hooks'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime.rb:98:in `before_and_after'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime.rb:81:in `block in with_hooks'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime/support_code.rb:120:in `call'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime/support_code.rb:120:in `block (3 levels) in around'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/language_support/language_methods.rb:9:in `block in around'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/language_support/language_methods.rb:97:in `call'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/language_support/language_methods.rb:97:in `execute_around'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/language_support/language_methods.rb:8:in `around'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime/support_code.rb:119:in `block (2 levels) in around'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime/support_code.rb:123:in `call'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime/support_code.rb:123:in `around'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime.rb:93:in `around'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime.rb:80:in `with_hooks'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:13:in `execute'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/scenario.rb:32:in `block in accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/scenario.rb:79:in `with_visitor'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/scenario.rb:31:in `accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:58:in `block in visit_feature_element'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:170:in `broadcast'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:57:in `visit_feature_element'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/feature.rb:38:in `block in accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/feature.rb:37:in `each'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/feature.rb:37:in `accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:27:in `block in visit_feature'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:170:in `broadcast'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:26:in `visit_feature'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/features.rb:28:in `block in accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/features.rb:17:in `each'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/features.rb:17:in `each'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/features.rb:27:in `accept'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:21:in `block in visit_features'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:170:in `broadcast'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/ast/tree_walker.rb:20:in `visit_features'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/runtime.rb:48:in `run!'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/lib/cucumber/cli/main.rb:47:in `execute!'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/gems/cucumber-1.3.4/bin/cucumber:13:in `<top (required)>'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/bin/cucumber:23:in `load'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/bin/cucumber:23:in `<main>'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `eval'
      /Users/Brian/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `<main>'
      features/dotfiles_repository.feature:10:in `When I change directory to the dotfiles directory'
    Then a file named ".git" should exist                                         # aruba-0.5.3/lib/aruba/cucumber.rb:264

Failing Scenarios:
cucumber features/dotfiles_repository.feature:6 # Scenario: Create a dotfiles git repository

1 scenario (1 failed)
5 steps (1 failed, 1 skipped, 3 passed)
0m0.631s

有人有任何解决方案或建议吗？如果您有疑问，请随时询问。提前致谢

Answer 1

我看到一些我会做的事情。不能保证这会有所作为，但可能会有所不同。

dotfiles从未在您的代码中使用过。 'dotfiles'是，那为什么要将它作为参数？

def self.init(location, dotfiles)

Ruby可以通过两种方式解释这些行：

FileUtils.mkdir_p(File.join location, 'dotfiles')
FileUtils.chdir(File.join location, 'dotfiles')

注意这些行中强制参数赋值的括号差异：

FileUtils.mkdir_p(File.join(location), 'dotfiles')
FileUtils.mkdir_p(File.join(location, 'dotfiles'))

FileUtils.chdir(File.join(location), 'dotfiles')
FileUtils.chdir(File.join(location, 'dotfiles'))

而不是像以下那样编写代码：

def self.init(location, dotfiles)
  # create the dotfiles directory and git init
  FileUtils.chdir(location) do
    FileUtils.mkdir_p(File.join location, 'dotfiles')
  end
  FileUtils.chdir(File.join location, 'dotfiles')
end

我会这样写：

def self.init(location)

  # create the dotfiles directory and git init
  FileUtils.chdir(location) do
    FileUtils.mkdir('dotfiles')
  end

  FileUtils.chdir('dotfiles')

end

虽然Ruby允许我们不使用括号将方法的参数括起来，但这是Stack Overflow上提出的无数问题的根源，因为代码不起作用。括号对于解释器很重要，要明确地告诉它我们的真正含义。当你不使用它们时，它将遵循其正常的操作顺序并使用优先级规则来试图弄清楚应该首先处理一行的哪一部分，并且没有括号来强制操作顺序，它可能会出错。

在这一点上，我们的选择是要么将操作移到我们将要使用其结果的位置之前，要么使用括号来说明在什么时候应该发生的事情。

Answer 2

我刚刚遇到类似的问题。经过长时间的调查，这条线引起了我的注意：

tmp/aruba/Users/Brian/dotfiles is not a directory. (RuntimeError)

看看它是如何从'tmp / aruba'开始的？毋庸置疑，我的问题还有这个'tmp / aruba /'。如果仔细查看readme at github，您会发现aruba有一个“工作目录，用于执行文件操作”。

当我按照那里的说明书时，我把它弄好了！

尝试更改目录的Cucumber Aruba导致奇怪的错误

2 个答案: