assertTrue(e instanceof LdapConfigurationException);
        } catch (Exception e) {
            fail("Should have caught as FessSystemException");
        }
    }

    public void test_throwAndCatchAsRuntimeException() {
        // Test catching as RuntimeException
        String errorMessage = "LDAP search base is missing";

        try {
            throw new LdapConfigurationException(errorMessage);

        } catch (FessSystemException e) {
            assertEquals(expectedMessage, e.getMessage());
            assertTrue(e instanceof UnsupportedSearchException);
        }
    }

    public void test_throwAndCatchAsRuntimeException() {
        // Test catching as RuntimeException
        String expectedMessage = "Runtime catch test";

        try {
            throw new UnsupportedSearchException(expectedMessage);

            assertTrue(e instanceof ResultOffsetExceededException);
        } catch (Exception e) {
            fail("Should have caught as FessSystemException");
        }
    }

    public void test_throwAndCatchAsRuntimeException() {
        // Test catching as RuntimeException
        String expectedMessage = "Caught as RuntimeException";

        try {
            throw new ResultOffsetExceededException(expectedMessage);