require File.expand_path(File.dirname(__FILE__) + '/../helper')
describe Iconoclasm::Extractor do
before do
class Thing; include Iconoclasm::Extractor; end
@thing = Thing.new
end
describe "requiring the module" do
it "should also require the Downloader module" do
Thing.included_modules.should include(Iconoclasm::Downloader)
end
end
describe "extracting a favicon from a url" do
before do
@url = "http://www.website.com/page.html"
@base_url = "http://www.website.com"
end
it "should try to find the favicon path in the head of the content" do
@thing.expects(:extract_favicon_from_head_of).with(@base_url, nil).throws(:done)
@thing.extract_favicon_from(@url)
end
describe "when the favicon path isn't in the head of the content" do
before do
@thing.stubs(:extract_favicon_from_head_of)
end
it "should naively guess where the favicon is" do
@thing.expects(:extract_favicon_from_naive_guess).with(@base_url).throws(:done)
@thing.extract_favicon_from(@url)
end
end
describe "when the favicon isn't mentioned in the content or in the default place" do
before do
@thing.stubs(:extract_favicon_from_head_of)
@thing.stubs(:extract_favicon_from_naive_guess)
end
it "should raise an error" do
lambda { @thing.extract_favicon_from(@url) }.should raise_error(Iconoclasm::MissingFavicon)
end
end
end
describe "extracting a favicon from the head of some HTML content" do
before do
# stubbing this to make sure we're not calling it accidentally without
# having to deal with expectations within a catch/throw pile
@thing.stubs(:extract_favicon_from_naive_guess)
@url = "http://www.website.com/page.html"
@base_url = "http://www.website.com"
@content = <<-HTML
This is the most interesting website ever.
HTML
end
describe "when content isn't already provided" do
before do
@response = mock('http response', :response_code => 200, :body_str => "")
end
it "should go get the content" do
@thing.expects(:get).returns(@response)
catch(:done) { @thing.__send__(:extract_favicon_from_head_of, @url) }
end
end
describe "when content is provided" do
describe "when there are no favicon links in the HTML content" do
before do
@thing.stubs(:find_favicon_links_in).returns([])
end
it "should return nil" do
catch(:done) { @thing.__send__(:extract_favicon_from_head_of, @url, @content) }.should be_nil
end
end
describe "when there are some favicon links in the HTML content" do
before do
@link = stub('favicon link')
@links = stub('favicon links', :empty? => false, :first => @link)
@thing.stubs(:find_favicon_links_in).returns(@links)
end
describe "the return value" do
before do
@href = 'http://www.website.com/images/favicon.ico'
@type = 'image/vnd.microsoft.icon'
@thing.expects(:href_of).with(@link).returns(@href)
@thing.expects(:type_of).with(@link).returns(@type)
@hash = catch(:done) { @thing.__send__(:extract_favicon_from_head_of, @url, @content) }
end
it "should contain the href from the first link" do
@hash.should have_key(:url)
@hash[:url].should == @href
end
it "should contain the content type from the first link" do
@hash.should have_key(:content_type)
@hash[:content_type].should == @type
end
end
end
end
end
end