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我正在为omniauth-facebook、devise、capybara、capybara-mechanize（可能带有VCR）和rpsec集成测试寻找一个简单的例子......

Capybara 无法连接到外部网站。所以需要水豚机械化。也许录像机可以加快速度。此链接描述了如何获取测试 facebook 用户：https ://developers.facebook.com/docs/test_users/

如omniauth 文档中所述，使用mock 可以很好地测试模型和控制器的逻辑。这需要 specs/helpers/omniauth.rb 中的以下代码，并在 rspec 集成测试的 :before 中调用 set_omniauth。

但是，如果有一个真正的针对 facebook 服务器运行的集成测试，那就太好了。当然，你会想要标记这样慢的测试，这样它们就不会通过警卫和默认的 rake 任务运行。

# You can read about this gist at: http://wealsodocookies.com/posts/how-to-test-facebook-login-using-devise-omniauth-rspec-and-capybara
# which is for twitter. Below is for facebook

def set_omniauth(opts = {})
  default = {:provider => :facebook,
             :uuid     => "1234",
             :facebook => {
                 :email => "foobar@example.com",
                 :gender => "Male",
                 :first_name => "foo",
                 :last_name => "bar",
                 :nickname => "foo bar",
                 :image => 'http://graph.facebook.com/659307629/picture?type=square'
             }
  }

  credentials = default.merge(opts)
  provider = credentials[:provider]
  user_hash = credentials[provider]

  OmniAuth.config.test_mode = true

  h = {
    'provider' => provider,
    'uid' => credentials[:uuid],
    'info' => user_hash,
    "extra" => {
        "info" => user_hash
    }
  }

  OmniAuth.config.mock_auth[provider] = CollectionUtility.deep_stringify_keys(h)


end

def set_invalid_omniauth(opts = {})

  credentials = { :provider => :facebook,
                  :invalid  => :invalid_crendentials
                 }.merge(opts)

  OmniAuth.config.test_mode = true
  OmniAuth.config.mock_auth[credentials[:provider]] = credentials[:invalid]

end
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