// The execute method catches the exception and returns the session ID
    }

    // Test execute with custom session ID
    public void test_execute_withCustomSessionId() {
        thumbnailJob.sessionId = "custom-session-456";
        thumbnailJob.cleanup();

        testProcessHelper.exitValue = 0;

        String result = thumbnailJob.execute();

        // and causes an exception which is caught and added to result
        assertTrue(result.contains("Session Id:"));
    }

    // Test execute with custom session ID
    public void test_execute_withCustomSessionId() {
        pythonJob.filename("test.py");
        pythonJob.sessionId = "custom-session-123";

        testProcessHelper.exitValue = 0;

        String result = pythonJob.execute();