assertEquals("[Test]", defaultMap.get(FessEnv.MAIL_SUBJECT_TEST_PREFIX));
        assertEquals("root@localhost", defaultMap.get(FessEnv.MAIL_RETURN_PATH));
    }

    // Test serialization
    public void xtest_serialization() {
        // Verify that serialVersionUID is defined
        assertTrue(fessEnv instanceof java.io.Serializable);

        // Test that the SimpleImpl class can be instantiated

        assertFalse(emptyBean.hasRole("admin"));
        assertFalse(emptyBean.hasGroup("developers"));
        assertFalse(emptyBean.hasGroups(new String[] { "developers" }));
    }

    @Test
    public void test_serialization() {
        // Test that FessUserBean is serializable
        assertTrue(fessUserBean instanceof java.io.Serializable);

        // Test empty user bean is also serializable

        user = new TestRefreshableFessUser("testuser", false);
        assertFalse(user.refresh());
        assertEquals(1, user.getRefreshCount());
    }

    @Test
    public void test_serialization() {
        // Test that implementations can be serialized
        FessUser user = new TestFessUser("testuser", new String[] { "role1", "role2" }, new String[] { "group1", "group2" },

        assertTrue(cause3 instanceof RuntimeException);
        assertEquals("Level 3 error", cause3.getMessage());

        assertNull(cause3.getCause());
    }

    @Test
    public void test_serialization() throws Exception {
        // Test serialization and deserialization
        String message = "Serializable SSO exception";
        Exception cause = new RuntimeException("Serializable cause");

        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_serialization() {
        // Test serialVersionUID exists
        ResultOffsetExceededException exception = new ResultOffsetExceededException("Test serialization");

        assertEquals(innerCause, exception.getCause().getCause());
        assertEquals("Invalid image format", exception.getCause().getCause().getMessage());
    }

    @Test
    public void test_serialization() {
        // Test that the exception has serialVersionUID
        ThumbnailGenerationException exception = new ThumbnailGenerationException("Test serialization");