result = crawlJob.hotThread(-1);
        assertEquals(-1, crawlJob.hotThreadInterval);
        assertSame(crawlJob, result);
    }

    // Test getExecuteType method
    @Test
    public void test_getExecuteType() {
        assertEquals(Constants.EXECUTE_TYPE_CRAWLER, crawlJob.getExecuteType());
    }

    // Test execute method with runAll scenario
    @Test
    public void test_execute_runAll() {

                + "/test////etc/passwd";
        assertEquals(expectedPath, pythonJob.getPyFilePath());
    }

    // Test getExecuteType method
    @Test
    public void test_getExecuteType() {
        assertEquals(Constants.EXECUTE_TYPE_PYTHON, pythonJob.getExecuteType());
    }

    // Test execute method with successful execution
    @Test
    public void test_execute_success() {

            // May throw different exception in test environment
            assertNotNull(e);
        }
    }

    // Test getExecuteType method
    @Test
    public void test_getExecuteType() {
        assertEquals(Constants.EXECUTE_TYPE_SUGGEST, suggestJob.getExecuteType());
    }

    // Test session ID generation
    @Test
    public void test_sessionIdGeneration() {