+ "[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";

  private File testDir;
  private File tempDir;

  private final Set<File> filesToDelete = new HashSet<>();

  @Override
  protected void tearDown() {
    for (File file : filesToDelete) {
      if (file.exists()) {
        delete(file);
      }
    }
    filesToDelete.clear();
  }

  private File getTestDir() throws IOException {

      Object testInstance = test.getDeclaredConstructor().newInstance();
      test.getMethod("setUp").invoke(testInstance);
      test.getMethod(getName()).invoke(testInstance);
      test.getMethod("tearDown").invoke(testInstance);
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);
    }
  }

  private void checkHelperVersion(ClassLoader classLoader, String expectedHelperClassName)

  // Shut down the server. Instances cannot be reused.
  server.close()
}
```

Your unit tests might move the `server` into a field so you can shut it down
from your test's `tearDown()`.

### API

#### MockResponse

Mock responses default to an empty response body and a `200` status code.
You can set a custom body with a string, input stream or byte array. Also

        testStream = new PrintStream(testOutput);

        // Reset LogStream instance using reflection
        resetLogStreamInstance();
    }

    @AfterEach
    void tearDown() throws Exception {
        // Restore original state
        System.setErr(originalErr);
        LogStream.level = originalLevel;
        // Reset instance using reflection
        resetLogStreamInstance();
    }

        secureRandom = new SecureRandom();
        preauthService = new PreauthIntegrityService(secureRandom, PreauthIntegrityService.HASH_ALGO_SHA512, true);
    }

    @AfterEach
    public void tearDown() {
        if (preauthService != null) {
            preauthService.cleanup();
        }
    }

    @Test
    @DisplayName("Test preauth salt generation")
    public void testPreauthSaltGeneration() {

        lenient().when(mockConfig.getWitnessReconnectDelay()).thenReturn(1000L);
        lenient().when(mockConfig.isWitnessServiceDiscovery()).thenReturn(true);
    }

    @AfterEach
    void tearDown() {
        if (mockService != null) {
            mockService.close();
        }
    }

    @Test
    void testMockServiceLifecycle() throws Exception {
        assertNotNull(mockService.getAddress());

  @RegisterExtension
  var platform = PlatformRule()

  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  @StartStop
  private val server = MockWebServer()

  @AfterEach fun tearDown() {
    ProxySelector.setDefault(DEFAULT_PROXY_SELECTOR)
    CookieManager.setDefault(DEFAULT_COOKIE_HANDLER)
    ResponseCache.setDefault(DEFAULT_RESPONSE_CACHE)
  }

  @Test fun durationDefaults() {

import org.junit.Test;

/**
 * Test class for ContentCache.
 * Tests memory-based and file-based content caching.
 */
public class ContentCacheTest {

    private File tempFile;

    @After
    public void tearDown() {
        if (tempFile != null && tempFile.exists()) {
            tempFile.delete();
        }
    }

    @Test
    public void testMemoryBasedCacheConstructor() {

        // Reset static state of the Handler class before each test for isolation
        resetHandlerState();
        handler = new Handler(mockCifsContext);
    }

    @AfterEach
    void tearDown() throws Exception {
        // Restore system properties and clean up static state
        System.setProperties(originalSystemProperties);
        resetHandlerState();
    }

    /**

 *       defined this way, but enough to live with.
 *   <li>If you override {@link #setUp} or {@link #tearDown}, make sure to invoke {@code
 *       super.setUp} and {@code super.tearDown} within them. These methods are used to clear and
 *       check for thread assertion failures.
 *   <li>All delays and timeouts must use one of the constants {@code SHORT_DELAY_MS}, {@code