ruby-on-rails – 如何使用Rspec测试视图中textarea的内容？

这是我遇到麻烦的测试.

describe "reminders/edit.html.erb" do
  before(:each) do
     @reminder = Factory(:reminder)
  end

  it "should render the form to edit a reminder" do
      assign :reminder,@reminder
      render
      rendered.should have_selector("form",:method => "post",:action => reminder_path(@reminder) ) do |f|
         f.should have_selector("input",:type => "text",:name => "reminder[title]",:value => "The Title"  )
         f.should have_selector("textarea",:name => "reminder[content]",:value => 'The big content')
         f.should have_selector("input",:type => "submit")
      end

end

我可能做错了,因为我在TDD上很新,但是当我从textarea中删除了真正让我困惑的值时,我看到这个测试通过了.那么有没有办法测试textarea的内容？