最近在跟着Ruby on Rails教程一书学习,在书中第三章建立第一个测试的部分遇到了问题,无法解决,求指点.

describe "Static pages" do context "Home page" do it "should have the content 'Sample App'" do visit '/static_pages/home' expect(response).to have_content('Sample App') end end end

运行

bundle exec rspec spec/requests/static_pages_spec.rb

后出现提示

1) Static pages Home page should have the content 'Sample App' Failure/Error: raise WrongScopeError, "`#{name}` is not available from within an example (e.g. an " \ "`it` block) or from constructs that run in the scope of an " \ "example (e.g. `before`, `let`, etc). It is only available " \ "on an example group (e.g. a `describe` or `context` block)." `example` is not available from within an example (e.g. an `it` block) or from constructs that run in the scope of an example (e.g. `before`, `let`, etc). It is only available on an example group (e.g. a `describe` or `context` block). # /home/xiao/.rvm/gems/ruby-2.3.0/gems/capybara-2.1.0/lib/capybara/rspec.rb:20:in `block (2 levels) in ' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/cli/exec.rb:63:in `load' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/cli/exec.rb:63:in `kernel_load' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/cli/exec.rb:24:in `run' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/cli.rb:304:in `exec' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/vendor/thor/lib/thor.rb:359:in `dispatch' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/vendor/thor/lib/thor/base.rb:440:in `start' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/cli.rb:11:in `start' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/exe/bundle:27:in `block in ' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/friendly_errors.rb:98:in `with_friendly_errors' # /home/xiao/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/exe/bundle:19:in `' Finished in 0.00071 seconds (files took 0.4267 seconds to load) 1 example, 1 failure Failed examples: rspec ./spec/requests/static_pages_spec.rb:15 # Static pages Home page should have the content 'Sample App'

而无法通过测试,请问报错的提示该如何解决,使测试通过?