assertNull(e.getCause());
        } catch (Exception e) {
            fail("Should have caught LdapConfigurationException");
        }
    }

    public void test_throwAndCatchAsFessSystemException() {
        // Test catching as parent exception type
        String errorMessage = "LDAP bind DN is invalid";

        try {
            throw new LdapConfigurationException(errorMessage);

        } catch (UnsupportedSearchException e) {
            assertEquals(expectedMessage, e.getMessage());
            assertNotNull(e.getStackTrace());
        }
    }

    public void test_throwAndCatchAsFessSystemException() {
        // Test catching as parent exception type
        String expectedMessage = "Parent catch test";

        try {
            throw new UnsupportedSearchException(expectedMessage);

            assertNull(e.getCause());
        } catch (Exception e) {
            fail("Should have caught ScriptEngineException");
        }
    }

    public void test_throwAndCatchAsFessSystemException() {
        // Test catching as parent class
        String message = "Parent class catch test";

        try {
            throw new ScriptEngineException(message);

            assertNull(e.getCause());
        } catch (Exception e) {
            fail("Should have caught ResultOffsetExceededException");
        }
    }

    public void test_throwAndCatchAsFessSystemException() {
        // Test catching as parent class FessSystemException
        String expectedMessage = "Caught as FessSystemException";

        try {

            assertNull(e.getCause());
        } catch (Exception e) {
            fail("Should have caught FessUserNotFoundException");
        }
    }

    public void test_throwAndCatchAsFessSystemException() {
        // Test catching as parent exception type
        String username = "testuser";

        try {
            throw new FessUserNotFoundException(username);

            assertEquals(expectedType, e.getType());
            assertEquals(expectedMessage, e.getMessage());
            assertNull(e.getCause());
        }
    }

    public void test_throwAndCatchAsFessSystemException() {
        // Test catching as parent exception type
        String type = "BasicAuth";
        String message = "Authentication failed";

        try {