assertTrue(mockService.getPort() > 0);
        assertEquals(0, mockService.getRegistrationCount());

        // Test registration
        String regId = mockService.registerWitness("\\\\server\\share", "192.168.1.100", 1);
        assertNotNull(regId);
        assertEquals(1, mockService.getRegistrationCount());
        assertTrue(mockService.hasRegistration(regId));

        // Test unregistration

            return true;
        }
        return false;
    }

    /**
     * Get the number of active registrations
     *
     * @return the registration count
     */
    public int getRegistrationCount() {
        return registrations.size();
    }

    /**
     * Check if a registration exists
     *
     * @param registrationId the registration ID
     * @return true if registration exists