Question

I have a method defined in application_helper.rb that returns a canonical URL based on the current request. How can I mock or otherwise specify a complete URL for the controller?

# spec/helpers/application_helper_spec.rb
describe "#canonical_url" do
  it "should return a path to an asset that includes the asset_host" do
    # Given: "http://www.foo.com:80/asdf.asdf?asdf=asdf"
    helper.canonical_url().should eq("http://www.foo.com/asdf.asdf")
  end
end

# app/helpers/application_helper.rb
def canonical_url
  "#{request.protocol}#{request.host}#{(request.port == 80) ? "" : request.port_string}#{request.path}"
end

EDIT:

Ultimately I want to test that canonical_url() returns the proper string for a bunch of different URLs, some with ports, some w/o, some with querystrings, some with paths, etc. Maybe that’s overkill, but that is the end goal. I would like to both explicitly stub/mock/whatever the initial URL and then explicitly set the expectation in the matcher. I would love to be able to do this in one call, i.e. controller.request.url = 'http://www.foo.com:80/asdf.asdf?asdf=asdf' or request = ActionController::TestRequest.new :url => 'http://www.foo.com:80/asdf.asdf?asdf=asdf' but so far I have not found a single “hook” that allows me to do so. So that is the solution I’m looking for. How do I explicitly define the request URL for a given test.

Answer 1

I’d have done:

helper.request.stub(:protocol).and_return("http://")
helper.request.stub(:host).and_return("www.foo.com")
helper.request.stub(:port).and_return(80)
helper.request.stub(:port_string).and_return(":80")
helper.request.stub(:path).and_return("/asdf.asdf")
helper.canonical_url.should eq("http://www.foo.com/asdf.asdf")