我有一个具有lib文件夹和spec文件夹的竞争目录.

├── lib  
│ ├── competition.rb  
│ └── team.rb  
└── spec  
    └── competition_spec.rb

当我运行rspec,我收到这个错误.我以前可以宣誓这个rspec的工作.我不知道发生了什么事.

competition :> rspec spec
/Users/akh88/.rvm/gems/ruby-1.9.3-p547/gems/rspec-core-> 3.0.2/lib/rspec/core/formatters.rb:167:in `find_formatter': Formatter 'nested' unknown - maybe you meant 'documentation' or 'progress'?. (ArgumentError)

我的竞争_spec.rb

require_relative "../lib/competiiton.rb"  
require_relative "../lib/team.rb"  

describe Competition do
  let(:competition) {Competition.new}
  let(:team) {Team.new}

  context "having no questions" do
    before { competition.questions = [] }

    it "doesn't accept any teams" do
      expect do
        team.enter_competition(competition)
      end.to raise_error Competition::Closed
    end
  end
end

我的rvm默认的Ruby版本是Mac OSX 10.9.4上的1.9.1.