String secondCall = exception.getType();

        assertSame(firstCall, secondCall);
        assertEquals(type, firstCall);
    }

    @Test
    public void test_inheritanceFromFessSystemException() {
        // Test that InvalidAccessTokenException is properly inherited from FessSystemException
        String type = "SessionToken";
        String message = "Session expired";

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
        assertNull(exception.getMessageCode());
    }

    @Test
    public void test_inheritanceFromFessSystemException() {
        // Setup
        final String message = "Test inheritance";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
        assertNull(exception.getMessageCode());
    }

    @Test
    public void test_inheritanceFromFessSystemException() {
        // Setup
        final String message = "Test inheritance hierarchy";