assertNull(provider.providePrimaryInvertibleCryptographer());
        assertNull(provider.providePrimaryOneWayCryptographer());
    }

    // Test providePrimaryInvertibleCryptographer
    public void test_providePrimaryInvertibleCryptographer() {
        // Test that the method returns the same instance
        InvertibleCryptographer first = securityResourceProvider.providePrimaryInvertibleCryptographer();