def test_auth_system_success(self, mock_iter_entry_points, mock_request):
        """Test that we can authenticate using the auth system."""
        class MockEntrypoint(pkg_resources.EntryPoint):
            def load(self):
                return FakePlugin

        class FakePlugin(auth_plugin.BaseAuthPlugin):
            def authenticate(self, cls, auth_url):
                cls._authenticate(auth_url, {"fake": "me"})

        mock_iter_entry_points.side_effect = lambda _t: [
                MockEntrypoint("fake", "fake", ["FakePlugin"])]

        mock_request.side_effect = mock_http_request()

        auth_plugin.discover_auth_systems()
        plugin = auth_plugin.load_plugin("fake")
        cs = client.Client("username", "password", "project_id",
                           "auth_url/v2.0", auth_system="fake",
                           auth_plugin=plugin)
        cs.client.authenticate()

        headers = requested_headers(cs)
        token_url = cs.client.auth_url + "/tokens"

        mock_request.assert_called_with(
                "POST",
                token_url,
                headers=headers,
                data='{"fake": "me"}',
                allow_redirects=True,
                **self.TEST_REQUEST_BASE)
    def test_exception_if_no_url(self, mock_iter_entry_points):
        """Test that no auth_url at all raises exception."""
        class MockEntrypoint(pkg_resources.EntryPoint):
            def load(self):
                return FakePlugin

        class FakePlugin(auth_plugin.BaseAuthPlugin):
            pass

        mock_iter_entry_points.side_effect = lambda _t: [
                MockEntrypoint("fake", "fake", ["FakePlugin"])]

        auth_plugin.discover_auth_systems()
        plugin = auth_plugin.load_plugin("fake")

        self.assertRaises(
                exceptions.EndpointNotFound,
                client.Client, "username", "password", "project_id",
                auth_system="fake", auth_plugin=plugin)
    def test_auth_system_defining_url(self, mock_iter_entry_points):
        """Test the auth_system defining an url."""
        class MockEntrypoint(pkg_resources.EntryPoint):
            def load(self):
                return FakePlugin

        class FakePlugin(auth_plugin.BaseAuthPlugin):
            def get_auth_url(self):
                return "http://faked/v2.0"

        mock_iter_entry_points.side_effect = lambda _t: [
                MockEntrypoint("fake", "fake", ["FakePlugin"])]

        auth_plugin.discover_auth_systems()
        plugin = auth_plugin.load_plugin("fake")

        cs = client.Client("username", "password", "project_id",
                    auth_system="fakewithauthurl",
                    auth_plugin=plugin)
        self.assertEqual(cs.client.auth_url, "http://faked/v2.0")
    def test_parse_auth_system_options(self, mock_iter_entry_points):
        """Test that we can parse the auth system options."""
        class MockEntrypoint(pkg_resources.EntryPoint):
            def load(self):
                return FakePlugin

        class FakePlugin(auth_plugin.BaseAuthPlugin):
            def __init__(self):
                self.opts = {"fake_argument": True}

            def parse_opts(self, args):
                return self.opts

        mock_iter_entry_points.side_effect = lambda _t: [
                MockEntrypoint("fake", "fake", ["FakePlugin"])]

        auth_plugin.discover_auth_systems()
        plugin = auth_plugin.load_plugin("fake")

        plugin.parse_opts([])
        self.assertIn("fake_argument", plugin.opts)