def test_bug_1593882_no_pin_authenticated_connection(self):
    """
    Test bug 1593882 no pin and authenticated request exception
    """

    with self.patch.object(self.pjlink_test, 'socket_timer'), self.patch.object(self.pjlink_test, 'timer'), \
         self.patch.object(self.pjlink_test, 'projectorAuthentication') as mock_authentication, \
            self.patch.object(self.pjlink_test, 'waitForReadyRead') as mock_ready_read, \
            self.patch.object(self.pjlink_test, 'send_command'):

        # GIVEN: Test object and mocks
        pjlink = self.pjlink_test
        pjlink.pin = None
        mock_ready_read.return_value = True

        # WHEN: call with authentication request and pin not set
        pjlink.check_login(data=TEST_CONNECT_AUTHENTICATE)

        # THEN: 'No Authentication' signal should have been sent
        mock_authentication.emit.assert_called_with(pjlink.ip)