return false;
            }

            // Check if parent directory is writable
            File parentDir = outputFile.getParentFile();
            if (parentDir != null && !parentDir.canWrite()) {
                return false;
            }

            // Simulate thumbnail generation
            try {
                if (!outputFile.exists()) {
                    outputFile.createNewFile();

        final File tempFile = systemHelper.createTempFile("test", ".tmp");
        assertNotNull(tempFile);
        assertTrue(tempFile.exists());
        assertTrue(tempFile.canRead());
        assertTrue(tempFile.canWrite());
        tempFile.delete();
    }

    public void test_calibrateCpuLoad_withTimeout() {
        systemHelper.setSystemCpuCheckInterval(100L);
        final boolean result = systemHelper.calibrateCpuLoad(1L);