You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: oauth_spec.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/omniauth-oauth-1.1.0/spec/omniauth/strategies
    
    the code of the file until where you have to start completion: require "helper"

describe "OmniAuth::Strategies::OAuth" do
  class MyOAuthProvider < OmniAuth::Strategie
    
  def app
    Rack::Builder.new do
      use OmniAuth::Test::PhonySession
      use OmniAuth::Builder do
        provider MyOAuthProvider, "abc", "def", :client_options => {:site => "https://api.example.org"}, :name => "example.org"
        provider MyOAuthProvider, "abc", "def", :client_options => {:site => "https://api.example.org"}, :authorize_params => {:abc => "def"}, :name => "example.org_with_authorize_params"
        provider MyOAuthProvider, "abc", "def", :client_options => {:site => "https://api.example.org"}, :request_params => {:scope => "http://foobar.example.org"}, :name => "example.org_with_request_params"
      end
      run lambda { |env| [404, {"Content-Type" => "text/plain"}, [env.key?("omniauth.auth").to_s]] }
    end.to_app
  end

  def session
    last_request.env["rack.session"]
  end

  before do
    stub_request(:post, "https://api.example.org/oauth/request_token").
      to_return(:body => "oauth_token=yourtoken&oauth_token_secret=yoursecret&oauth_callback_confirmed=true")
  end

  it "should add a camelization for itself" do
    expect(OmniAuth::Utils.camelize("oauth")).to eq("OAuth")
  end

  describe "/auth/{name}" do
    context "successful" do
      before do
        get "/auth/example.org"
      end

      it "should redirect to authorize_url" do
        expect(last_response).to be_redirect
        expect(last_response.headers["Location"]).to eq("https://api.example.org/oauth/authorize?oauth_token=yourtoken")
      end

      it "should redirect to authorize_url with authorize_params when set" do
        get "/auth/example.org_with_authorize_params"
        expect(last_response).to be_redirect
        expect([
          "https://api.example.org/oauth/authorize?abc=def&oauth_token=yourtoken",
          "https://api.example.org/oauth/authorize?oauth_token=yourtoken&abc=def",
        ]).to be_include(last_response.headers["Location"])
      end

      it "should set appropriate session variables" do
        expect(session["oauth"]).to eq("example.org" => {"callback_confirmed" => true, "request_token" => "yourtoken", "request_secret" => "yoursecret"})
      end

      it "should pass request_params to get_request_token" do
        get "/auth/example.org_with_request_params"
        expect(WebMock).to have_requested(:post, "https://api.example.org/oauth/request_token").
          with { |req| req.body == "scope=http%3A%2F%2Ffoobar.example.org" }
      end
    end

    context "unsuccessful" do
      before do
        stub_request(:post, "https://api.example.org/oauth/request_token").
          to_raise(::Net::HTTPFatalError.new('502 "Bad Gateway"', nil))
        get "/auth/example.org"
      end

      it "should call fail! with :service_unavailable" do
        expect(last_request.env["omniauth.error"]).to be_kind_of(::Net::HTTPFatalError)
        last_request.env["omniauth.error.type"] = :service_unavailable
      end

      context "SSL failure" do
        before do
          stub_request(:post, "https://api.example.org/oauth/request_token").
            to_raise(::OpenSSL::SSL::SSLError.new("SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed"))
          get "/auth/example.org"
        end

        it "should call fail! with :service_unavailable" do
          expect(last_request.env["omniauth.error"]).to be_kind_of(::OpenSSL::SSL::SSLError)
          last_request.env["omniauth.error.type"] = :service_unavailable
        end
      end
    end
  end

  describe "/auth/{name}/callback" do
    before do
      stub_request(:post, "https://api.example.org/oauth/access_token").
        to_return(:body => "oauth_token=yourtoken&oauth_token_secret=yoursecret")
      get "/auth/example.org/callback", {:oauth_verifier => "dudeman"}, "rack.session" => {"oauth" => {"example.org" => {"callback_confirmed" => true, "request_token" => "yourtoken", "request_secret" => "yoursecret"}}}
    end

    it "should exchange the request token for an access token" do
      expect(last_request.env["omniauth.auth"]["provider"]).to eq("example.org")
      expect(last_request.env["omniauth.auth"]["extra"]["access_token"]).to be_kind_of(OAuth::AccessToken)
    end

    it "should call through to the master app" do
      expect(last_response.body).to eq("true")
    end

    context "bad gateway (or any 5xx) for access_token" do
      before do
        stub_request(:post, "https://api.example.org/oauth/access_token")  .
          to_raise(::Net::HTTPFatalError.new('502 "Bad Gateway"', nil))
        get "/auth/example.org/callback", {:oauth_verifier => "dudeman"}, "rack.session" => {"oauth" => {"example.org" => {"callback_confirmed" => true, "request_token" => "yourtoken", "request_secret" => "yoursecret"}}}
      end

      it "should call fail! with :service_unavailable" do
        expect(last_request.env["omniauth.error"]).to be_kind_of(::Net::HTTPFatalError)
        last_request.env["omniauth.error.type"] = :service_unavailable
      end
    end

    context "SSL failure" do
      before do
        stub_request(:post, "https://api.example.org/oauth/access_token")  .
          to_raise(::OpenSSL::SSL::SSLError.new("SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed"))
        get "/auth/example.org/callback", {:oauth_verifier => "dudeman"}, "rack.session" => {"oauth" => {"example.org" => {"callback_confirmed" => true, "request_token" => "yourtoken", "request_secret" => "yoursecret"}}}
      end

      it "should call fail! with :service_unavailable" do
        expect(last_request.env["omniauth.error"]).to be_kind_of(::OpenSSL::SSL::SSLError)
        last_request.env["omniauth.error.type"] = :service_unavailable
      end
    end
  end

  describe "/auth/{name}/callback with expired session" do
    before do
      stub_request(:post, "https://api.example.org/oauth/access_token").
        to_return(:body => "oauth_token=yourtoken&oauth_token_secret=yoursecret")
      get "/auth/example.org/callback", {:oauth_verifier => "dudeman"}, "rack.session" => {}
    end

    it "should call fail! with :session_expired" do
      expect(last_request.env["omniauth.error"]).to be_kind_of(::OmniAuth::NoSessionError)
      last_request.env["omniauth.error.type"] = :session_expired
    end
  end
end