CIFSException exception = new CIFSException((String) null);
            assertNotNull(exception);
        });
    }

    @Test
    @DisplayName("Should handle null cause")
    void testNullCause() {
        // When/Then
        assertDoesNotThrow(() -> {
            CIFSException exception = new CIFSException("Message", null);
            assertNotNull(exception);

            assertNull(exception.getMessage());
        });
    }

    @Test
    @DisplayName("Should handle null cause gracefully")
    void testNullCause() {
        // When/Then
        assertDoesNotThrow(() -> {
            RuntimeCIFSException exception = new RuntimeCIFSException((Throwable) null);
            assertNull(exception.getCause());
        });