// Test with empty strings
        result = jobExecutor.execute("", "");
        assertEquals("Executed:  ", result);
    }

    @Test
    public void test_addShutdownListener() {
        // Test adding shutdown listener
        AtomicBoolean shutdownCalled = new AtomicBoolean(false);
        ShutdownListener listener = new ShutdownListener() {
            @Override

Shinsuke Sugaya <******@****.***> 1768400947 +0900