assertEquals(whitespaceMessage, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_getMessage_withLongMessage() {
        // Test constructor with a long message
        StringBuilder longMessageBuilder = new StringBuilder();
        for (int i = 0; i < 100; i++) {

Shinsuke Sugaya <******@****.***> 1768120985 +0900