Question

我正在尝试测试登录时应该/不应该看到的链接，但RSpec会抛出以下错误：

Failure/Error: before { sign_in user }
ThreadError:
  Attempt to unlock a mutex which is not locked
  # (eval):2:in `click_button'
  # ./spec/support/utilities.rb:5:in `sign_in'
  # ./spec/views/header_spec.rb:19:in `block (3 levels) in <top (required)>'

我的测试块看起来像这样：

describe "when signed in" do
  let(:user) { FactoryGirl.create(:user) }
  before { sign_in user }

  it { should have_link("Sign out") }
  it { should_not have_link("Sign up") }
  it { should_not have_link("Log in") }
end

我的sign_in功能：

def sign_in(user)
  click_link "Log in"
  fill_in "username", with: user.username
  fill_in "password", with: user.password
  click_button "Log me in!"
  cookies[:remember_token] = user.remember_token
end

我尝试过更换

click_button "Log me in!"

与

find(:button, "Log me in!").click

并导致以下错误：

Nokogiri::CSS::SyntaxError:
   unexpected '!' after '[#<Nokogiri::CSS::Node:0x00000003645778 @type=:DESCENDANT_SELECTOR, @value=[#<Nokogiri::CSS::Node:0x000000036464e8 @type=:ELEMENT_NAME, @value=["Log"]>, #<Nokogiri::CSS::Node:0x000000036458b8 @type=:DESCENDANT_SELECTOR, @value=[#<Nokogiri::CSS::Node:0x00000003645f98 @type=:ELEMENT_NAME, @value=["me"]>, #<Nokogiri::CSS::Node:0x000000036459f8 @type=:ELEMENT_NAME, @value=["in"]>]>]>]'
 # (eval):3:in `_racc_do_parse_c'
 # (eval):3:in `do_parse'
 # (eval):2:in `find'
 # ./spec/support/utilities.rb:5:in `sign_in'
 # ./spec/views/header_spec.rb:19:in `block (3 levels) in <top (required)>'

然后我尝试用“登录我”替换我的按钮文本，没有感叹号，和Capybara抛出一个ElementNotFound错误：

Failure/Error: before { sign_in user }
 Capybara::ElementNotFound:
   Unable to find css "Log me in"
 # (eval):2:in `find'
 # ./spec/support/utilities.rb:5:in `sign_in'
 # ./spec/views/header_spec.rb:19:in `block (3 levels) in <top (required)>'

我对RSpec和Rails一般都很陌生，但到目前为止，我已经能够很好地找到我的方法。这个让我完全难过。

Answer 1

所以在昨晚一点钟地讨论之后，我终于找到了解决方案并立即开始使用facedesk。我在SessionsController中使用了SessionsHelper，并且我在课堂外使用了include语句：

include SessionsHelper

class SessionsController < ApplicationController
  def new
  end
  ...
  ...
  ...
end

通过移动类中的include语句：

class SessionsController < ApplicationController
  include SessionsHelper

  def new
  end
  ...
  ...
  ...
end

我的所有测试都开始了。虽然我的测试在类块之外的include语句失败，但实际的功能似乎工作正常。我可以登录/退出，使用正确的信息存储cookie，我在服务器控制台中看不到任何错误。

为什么RSpec在尝试click_button时会出现“尝试解锁未锁定的互斥锁”错误？

1 个答案: