assertNotNull(result);
        } catch (Exception e) {
            assertTrue(true); // Expected exception
        }
    }

    @Test
    public void test_getJarFile_exists() throws IOException {
        // Create a mock jar file
        Path jarPath = tempDir.resolve("test-theme.jar");
        Files.createFile(jarPath);

        ThemeHelper mockThemeHelper = new ThemeHelper() {