Rails中的测试RSpec升级遇到的问题

 1 bundle exec rspec spec/
 2 /home/wuxj/Prac/rrprac/sample_app/spec/spec_helper.rb:20:in `block in <top (required)>‘: uninitialized constant Capybara (NameError)
 3     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core.rb:79:in `configure‘
 4     from /sample_app/spec/spec_helper.rb:17:in `<top (required)>‘
 5     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `require‘
 6     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `block in requires=‘
 7     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `each‘
 8     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `requires=‘
 9     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:101:in `block in process_options_into‘
10     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:100:in `each‘
11     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:100:in `process_options_into‘
12     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:22:in `configure‘
13     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:96:in `setup‘
14     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:85:in `run‘
15     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:70:in `run‘
16     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:38:in `invoke‘
17     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/exe/rspec:4:in `<top (required)>‘
18     from /.rvm/gems/ruby-2.1.2/bin/rspec:23:in `load‘
19     from /.rvm/gems/ruby-2.1.2/bin/rspec:23:in `<main>‘
20     from /.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `eval‘
21     from /.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `<main>‘
22 wuxj@P-D5-wuxj:~/Prac/rrprac/sample_app$ bundle exec rspec spec/
23 /Prac/rrprac/sample_app/spec/spec_helper.rb:20:in `block in <top (required)>‘: uninitialized constant Capybara (NameError)
24     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core.rb:79:in `configure‘
25     from /Prac/rrprac/sample_app/spec/spec_helper.rb:17:in `<top (required)>‘
26     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `require‘
27     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `block in requires=‘
28     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `each‘
29     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration.rb:1025:in `requires=‘
30     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:101:in `block in process_options_into‘
31     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:100:in `each‘
32     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:100:in `process_options_into‘
33     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/configuration_options.rb:22:in `configure‘
34     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:96:in `setup‘
35     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:85:in `run‘
36     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:70:in `run‘
37     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/lib/rspec/core/runner.rb:38:in `invoke‘
38     from /.rvm/gems/ruby-2.1.2/gems/rspec-core-3.0.4/exe/rspec:4:in `<top (required)>‘
39     from /.rvm/gems/ruby-2.1.2/bin/rspec:23:in `load‘
40     from /.rvm/gems/ruby-2.1.2/bin/rspec:23:in `<main>‘
41     from /.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `eval‘
42     from /.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `<main>‘

 1 require ‘rails_helper‘
 2 
 3 RSpec.describe "StaticPages", :type => :request do
 4   # describe "GET /static_pages" do
 5   #   it "works! (now write some real specs)" do
 6   #     get static_pages_index_path
 7   #     expect(response.status).to be(200)
 8   #   end
 9   # end
10 
11   describe "Home page" do
12       it "should have the content ‘Sample App‘" do
13           visit ‘/static_pages/home‘
14           expect(page).to have_content(‘Sample App‘)
15       end
16   end
17 end