CurlException exception = new CurlException(null, cause);

        assertNull(exception.getMessage());
        assertSame(cause, exception.getCause());
    }

    @Test
    public void testConstructorWithMessageAndNullCause() {
        String message = "Test error message";
        CurlException exception = new CurlException(message, null);

        assertEquals(message, exception.getMessage());