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require "spec_helper"
describe Faye::RackAdapter do
include Rack::Test::Methods
let(:adapter) { Faye::RackAdapter.new(settings) { |ra| @yielded = ra } }
let(:app) { ServerProxy.new(adapter) }
let(:settings) { { :mount => "/bayeux", :timeout => 30 } }
let(:server) { double "server" }
after { app.stop }
let(:content_type) { last_response["Content-Type"] }
let(:json) { MultiJson.load(body) }
let(:body) { last_response.body }
let(:status) { last_response.status.to_i }
def headers(name)
last_response[name]
end
before do
Faye::Server.should_receive(:new).with(settings).and_return server
adapter.stub(:get_client).and_return double("client")
end
describe "monitoring configuration" do
it "should be possible by providing a block to initializer" do
@yielded.should be_instance_of(Faye::RackAdapter)
end
end
describe "OPTIONS requests" do
describe "with origin specified" do
before { header "Origin", "http://example.com" }
it "returns a matching cross-origin access control header" do
options "/bayeux"
headers("Access-Control-Allow-Origin").should == "http://example.com"
headers("Access-Control-Allow-Credentials").should == "true"
headers("Access-Control-Allow-Headers").should == "Accept, Authorization, Content-Type, Pragma, X-Requested-With"
headers("Access-Control-Allow-Methods").should == "POST, GET"
headers("Access-Control-Max-Age").should == "86400"
end
end
describe "with referer specified" do
before { header "Referer", "http://example.com" }
it "returns a matching cross-origin access control header" do
options "/bayeux"
headers("Access-Control-Allow-Origin").should == "http://example.com"
headers("Access-Control-Allow-Credentials").should == "true"
headers("Access-Control-Allow-Headers").should == "Accept, Authorization, Content-Type, Pragma, X-Requested-With"
headers("Access-Control-Allow-Methods").should == "POST, GET"
headers("Access-Control-Max-Age").should == "86400"
end
end
describe "with no origin specified" do
it "returns a wildcard cross-origin access control header" do
options "/bayeux"
headers("Access-Control-Allow-Origin").should == "*"
headers("Access-Control-Allow-Credentials").should == "true"
headers("Access-Control-Allow-Headers").should == "Accept, Authorization, Content-Type, Pragma, X-Requested-With"
headers("Access-Control-Allow-Methods").should == "POST, GET"
headers("Access-Control-Max-Age").should == "86400"
end
end
end
describe "POST requests" do
describe "with cross-origin access control" do
shared_examples_for "cross-origin request" do
before do
header "Origin", "http://example.com"
end
it "returns a matching cross-origin access control header" do
server.stub(:process).and_yield []
post "/bayeux", :message => '[]'
headers("Access-Control-Allow-Origin").should == "http://example.com"
end
it "forwards the message param onto the server" do
server.should_receive(:process).with({ "channel" => "/plain" }, instance_of(Rack::Request)).and_yield []
post "/bayeux", "message=%7B%22channel%22%3A%22%2Fplain%22%7D"
end
it "returns the server's response as JSON" do
server.stub(:process).and_yield ["channel" => "/meta/handshake"]
post "/bayeux", "message=%5B%5D"
status.should == 200
content_type.should == "application/json; charset=utf-8"
headers("Content-Length").should == "31"
json.should == ["channel" => "/meta/handshake"]
end
it "returns a 400 response if malformed JSON is given" do
server.should_not_receive(:process)
post "/bayeux", "message=%7B%5B"
status.should == 400
content_type.should == "text/plain; charset=utf-8"
end
it "returns a 400 response if primitive JSON is given" do
server.should_not_receive(:process)
post "/bayeux", "message=1"
status.should == 400
content_type.should == "text/plain; charset=utf-8"
end
it "returns a 404 if the path is not matched" do
server.should_not_receive(:process)
post "/blaf", 'message=%5B%5D'
status.should == 404
content_type.should == "text/plain; charset=utf-8"
end
end
describe "with text/plain" do
before { header "Content-Type", "text/plain" }
it_should_behave_like "cross-origin request"
end
describe "with application/xml" do
before { header "Content-Type", "application/xml" }
it_should_behave_like "cross-origin request"
end
end
describe "with application/json" do
before do
header "Content-Type", "application/json"
end
it "does not return an access control header" do
server.stub(:process).and_yield []
post "/bayeux", :message => '[]'
headers("Access-Control-Allow-Origin").should be_nil
end
it "forwards the POST body onto the server" do
server.should_receive(:process).with({ "channel" => "/foo" }, instance_of(Rack::Request)).and_yield []
post "/bayeux", '{ "channel":"/foo" }'
end
it "returns the server's response as JSON" do
server.stub(:process).and_yield ["channel" => "/meta/handshake"]
post "/bayeux", '[]'
status.should == 200
content_type.should == "application/json; charset=utf-8"
headers("Content-Length").should == "31"
json.should == ["channel" => "/meta/handshake"]
end
it "returns a 400 response if malformed JSON is given" do
server.should_not_receive(:process)
post "/bayeux", "[ }"
status.should == 400
content_type.should == "text/plain; charset=utf-8"
end
it "returns a 404 if the path is not matched" do
server.should_not_receive(:process)
post "/blaf", "[]"
status.should == 404
content_type.should == "text/plain; charset=utf-8"
end
end
describe "with no content type" do
it "forwards the message param onto the server" do
server.should_receive(:process).with({ "channel" => "/foo" }, instance_of(Rack::Request)).and_yield []
post "/bayeux", :message => '{ "channel":"/foo" }'
end
it "returns the server's response as JSON" do
server.stub(:process).and_yield ["channel" => "/meta/handshake"]
post "/bayeux", :message => '[]'
status.should == 200
content_type.should == "application/json; charset=utf-8"
headers("Content-Length").should == "31"
json.should == ["channel" => "/meta/handshake"]
end
it "returns a 400 response if malformed JSON is given" do
server.should_not_receive(:process)
post "/bayeux", :message => "[ }"
status.should == 400
content_type.should == "text/plain; charset=utf-8"
end
it "returns a 404 if the path is not matched" do
server.should_not_receive(:process)
post "/blaf", :message => "[]"
status.should == 404
content_type.should == "text/plain; charset=utf-8"
end
end
end
describe "GET requests" do
let(:params) { { :message => '{ "channel":"/foo" }', :jsonp => "callback" } }
describe "with valid params" do
it "forwards the message param onto the server" do
server.should_receive(:process).with({ "channel" => "/foo" }, instance_of(Rack::Request)).and_yield []
get "/bayeux", params
end
it "returns the server's response as JavaScript" do
server.stub(:process).and_yield ["channel" => "/meta/handshake"]
get "/bayeux", params
status.should == 200
content_type.should == "text/javascript; charset=utf-8"
headers("Content-Length").should == "46"
body.should == '/**/callback([{"channel":"/meta/handshake"}]);'
end
it "does not let the client cache the response" do
server.stub(:process).and_yield ["channel" => "/meta/handshake"]
get "/bayeux", params
headers("Cache-Control").should == "no-cache, no-store"
end
end
describe "with an unknown path" do
it "returns a 404" do
server.should_not_receive(:process)
get "/blah", params
status.should == 404
content_type.should == "text/plain; charset=utf-8"
end
end
describe "missing jsonp" do
before do
params.delete(:jsonp)
end
it "returns the server's response using the default callback" do
server.stub(:process).and_yield ["channel" => "/meta/handshake"]
get "/bayeux", params
status.should == 200
content_type.should == "text/javascript; charset=utf-8"
headers("Content-Length").should == "51"
body.should == '/**/jsonpcallback([{"channel":"/meta/handshake"}]);'
end
end
shared_examples_for "bad GET request" do
it "does not call the server" do
server.should_not_receive(:process)
get "/bayeux", params
end
it "returns a 400 response" do
get "/bayeux", params
status.should == 400
content_type.should == "text/plain; charset=utf-8"
end
end
describe "with malformed JSON" do
before { params[:message] = "[ }" }
it_should_behave_like "bad GET request"
end
describe "with a callback that's not a JS identifier" do
before { params[:jsonp] = "42" }
it_should_behave_like "bad GET request"
end
describe "missing message" do
before { params.delete(:message) }
it_should_behave_like "bad GET request"
end
end
end
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