require 'test/unit'
require 'openid/yadis/xrds'

require 'testutil'

module OpenID
  module Yadis

    module XRDSTestMixin
      include TestDataMixin

      XRD_FILE = 'valid-populated-xrds.xml'
      NOXRDS_FILE = 'not-xrds.xml'
      NOXRD_FILE = 'no-xrd.xml'

      XRDS_DATA_DIR = TEST_DATA_DIR.join('test_xrds')

      def read_data_file(filename)
        super(filename, false, XRDS_DATA_DIR)
      end
    end

    class ParseXRDSTestCase < Test::Unit::TestCase
      include XRDSTestMixin

      # Check that parsing succeeds at all.
      def test_parse
        result = Yadis.parseXRDS(read_data_file(XRD_FILE))
        assert_not_nil result
      end

      def test_parse_no_xrds_xml
        xmldoc = read_data_file(NOXRDS_FILE)
        assert_raise(Yadis::XRDSError) {
          Yadis.parseXRDS(xmldoc)
        }
      end

      def test_parse_no_xrds_empty
        assert_raise(Yadis::XRDSError) {
          Yadis.parseXRDS('')
        }
      end

      def test_is_xrds
        isnt = REXML::Document.new(read_data_file(NOXRDS_FILE))
        should_be = Yadis.parseXRDS(read_data_file(XRD_FILE))
        assert_equal false, Yadis::is_xrds?(isnt)
        assert Yadis::is_xrds?(should_be)
      end
    end

    class GetYadisXRDTestCase < Test::Unit::TestCase
      include XRDSTestMixin

      # XXX: Test to make sure this really gets the _right_ XRD.
      def test_get_xrd
        doc = Yadis.parseXRDS(read_data_file(XRD_FILE))
        result = Yadis::get_yadis_xrd(doc)
        assert_not_nil result
        assert_equal 'XRD', result.name
        assert_equal Yadis::XRD_NS_2_0, result.namespace
      end

      def test_no_xrd
        xmldoc = read_data_file(NOXRD_FILE)
        doc = Yadis.parseXRDS(xmldoc)
        assert_raise(Yadis::XRDSError) {
          Yadis.get_yadis_xrd(doc)
        }
      end
    end

    class EachServiceTestCase < Test::Unit::TestCase
      include XRDSTestMixin

      def test_get_xrd
        doc = Yadis.parseXRDS(read_data_file(XRD_FILE))
        count = 0
        result = Yadis::each_service(doc) { |e|
          assert_equal 'Service', e.name
          count += 1
        }
        assert_not_nil result
        assert_equal 5, count
      end

      def test_no_xrd
        xmldoc = read_data_file(NOXRD_FILE)
        doc = Yadis.parseXRDS(xmldoc)
        assert_raise(Yadis::XRDSError) {
          Yadis.each_service(doc)
        }
      end

      def test_equal_j3h
        doc = Yadis.parseXRDS(read_data_file('=j3h.2007.11.14.xrds'))
        count = 0
        result = Yadis::each_service(doc) { |e|
          assert_equal 'Service', e.name
          count += 1
        }
        assert_not_nil result
        assert_equal 2, count
      end
    end

    # XXX: test prioSort!

    class ExpandServiceTestCase < Test::Unit::TestCase
      @@service_xml = <<END
<Service>
<Type>urn://foo</Type>
<Type>urn://bar</Type>
<URI priority='2'>http://2.invalid/</URI>
<URI>http://0.invalid/</URI>
<URI priority='1'>http://1.invalid/</URI>
</Service>
END

      # XXX - not sorted!
      def test_expand_service
        service_element = REXML::Document.new(@@service_xml).root
        result = Yadis::expand_service(service_element)
        assert_equal 3, result.length
        types, uri, result_element = result[0]
        assert_same service_element, result_element
        assert_equal 'http://0.invalid/', uri
        assert_equal ['urn://foo', 'urn://bar'], types
        types, uri, result_element = result[1]
        assert_equal 'http://1.invalid/', uri
        types, uri, result_element = result[2]
        assert_equal 'http://2.invalid/', uri
      end
    end

    class PrioSortTestCase < Test::Unit::TestCase
      def new_uri(priority)
        e = REXML::Element.new("URI")
        e.add_attribute("priority", priority.to_s) unless e.nil?
        return e
      end

      def test_sorting
        l = [
             e7 = new_uri(7),
             e1 = new_uri(1),
             e0 = new_uri(nil),
             e2 = new_uri(2),
            ]
        sorted = Yadis::prio_sort(l)
        assert_same e0, sorted[0]
        assert_same e1, sorted[1]
        assert_same e2, sorted[2]
        assert_same e7, sorted[3]
      end
    end

    class GetCanonicalIDTestCase < Test::Unit::TestCase
      include XRDSTestMixin

      def test_multisegment_xri
        xmldoc = Yadis.parseXRDS(read_data_file('subsegments.xrds'))
        result = Yadis.get_canonical_id('xri://=nishitani*masaki', xmldoc)
      end
    end
  end
end