尝试运行 rake 时出现 rspec 错误

Question

我正在尝试使用 app academy 教程自学一些 ruby​​，在完成阅读后，安装 rvm、rubygems 和 rspec2，当我什至尝试使用 rake 运行第一个最基本的代码 (00_hello) 时，我得到了整个错误：

 (in /home/deadpool/Documents/learn_ruby)
/home/deadpool/Documents/learn_ruby/rspec_config.rb:3:in `block in <top (required)>': undefined method `color=' for #<RSpec::Core::Configuration:0x0000000293dee0> (NoMethodError)
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core.rb:67:in `configure'
    from /home/deadpool/Documents/learn_ruby/rspec_config.rb:1:in `<top (required)>'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/configuration.rb:162:in `require'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/configuration.rb:162:in `block in requires='
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/configuration.rb:162:in `map'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/configuration.rb:162:in `requires='
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/configuration_options.rb:22:in `block in configure'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/configuration_options.rb:21:in `each'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/configuration_options.rb:21:in `configure'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/command_line.rb:17:in `run'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/runner.rb:55:in `run_in_process'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/runner.rb:46:in `run'
    from /home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/runner.rb:10:in `block in autorun'
rake aborted!
ruby -S bundle exec rspec -I/home/deadpool/Documents/learn_ruby/00_hello -I/home/deadpool/Documents/learn_ruby/00_hello/solution -f documentation -r ./rspec_config "/home/deadpool/Documents/learn_ruby/00_hello/hello_spec.rb" failed
/home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/rake_task.rb:117:in `rescue in block (2 levels) in initialize'
/home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/rake_task.rb:113:in `block (2 levels) in initialize'
/home/deadpool/.rvm/gems/ruby-2.0.0-p481/gems/rspec-core-2.0.0/lib/rspec/core/rake_task.rb:109:in `block in initialize'
Tasks: TOP => default => spec
(See full trace by running task with --trace)

我试图用谷歌搜索一些错误，但没有成功。我之前使用 rspec v2 的 rake 文件有另一个错误，当前版本是 3.0.0，所以我必须安装旧版本，我认为这可能是另一个设置问题。感谢有人可以帮助我或指导我。

rspec_config.rb 文件：

RSpec.configure do |c|
    c.fail_fast = true
    c.color = true
end

hello.rb 文件：

def hello
   "Hello!"
end

def greet(who)
   "Hello, #{who}!"
end

更新

得到新的错误：-

虽然我将c.color = true 更改为c.color_enabled = true

(in /home/deadpool/Documents/learn_ruby)
the hello function says hello (FAILED - 1)

Failures: 1) the hello function says hello Failure/Error: 
Unable to find matching line from backtrace undefined method run_all' for []:Array 
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/hooks.rb:116:inrun_hook_filtered' 
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/example_group.rb:176:in eval_before_alls'
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/example_group.rb:231:inrun'
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/command_line.rb:26:in block (2 levels) in run'
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/command_line.rb:26:inmap'
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/command_line.rb:26:in block in run' 
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/reporter.rb:11:inreport'
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/command_line.rb:23:in run' 
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/runner.rb:55:inrun_in_process' 
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/runner.rb:46:in run'
# /home/deadpool/.rvm/gems/ruby-2.1.2/gems/rspec-core-2.0.0/lib/rspec/core/runner.rb:10:inblock in autorun'

更新

hello_spec.rb 文件：

require "hello"

describe "the hello function" do
  it "says hello" do
    hello.should == "Hello!"
  end
end

describe "the greet function" do
  it "says hello to someone" do
    greet("Alice").should == "Hello, Alice!"
  end

  it "says hello to someone else" do
    greet("Bob").should == "Hello, Bob!"
  end
end

更新 因此，我将 rspec 更新为 v3.0.0 并将 Rakefile gem 'rspec', '~>3.0.0' 和 c.color = true 改回来。现在一切正常（得到一些弃用警告，但没有什么重要的），得到教程中的输出。猜猜我只需要更新我的 rspec 并更改 Rakefile 中的版本。非常感谢:)

Answer 1

您的错误日志显示您处于 rspec-core-2.0.0 版本并且您的错误是 -

rspec_config.rb:3:in `block in <top (required)>': undefined method `color=' for 
#<RSpec::Core::Configuration:0x0000000293dee0> (NoMethodError)

现在Deprecate config options 确认 2.99.0.rc1 / 2014-05-18 或 2.99.0 方法的以下版本是 - #color_enabled, @987654328 @ 和 #color?。从 2.99.0 更改为 #color、#color= 和 #color_enabled?。

我在链接时从 changelog 中获得了信息 -

弃用#color_enabled、#color_enabled= 和#color？支持#color、#color= 和#color_enabled？输出。 （乔恩·罗）

所以你需要写成

RSpec.configure do |c|
    c.fail_fast = true
    c.color_enabled = true
end

关于您的新错误，我发现它是bug undefined methodrun_all' for []:Array`。已修复in this patch。检查这个Rspec issue。

我的建议是使用Rspec 3.0，至少你会很开心。在这种情况下，将color_enabled 还原为color。

希望这会对你有所帮助。