assertEquals("com.example|jcifs|org.test", System.getProperty("java.protocol.handler.pkgs"));
    }

    // Helper method to get the singleton instance via reflection for assertion
    private Object getSingletonInstanceViaReflection() {
        try {
            Field instance = SingletonContext.class.getDeclaredField("INSTANCE");
            instance.setAccessible(true);

    assertThat(e).hasMessageThat().contains("toString representation");
  }

  private static void assertErrorMessage(Throwable e, String message) {
    // TODO(kevinb): use a Truth assertion here
    if (!e.getMessage().contains(message)) {
      fail("expected <" + e.getMessage() + "> to contain <" + message + ">");
    }
  }

  /**

        if (level == FileInformation.FILE_BASIC_INFO || level == FileInformation.FILE_STANDARD_INFO
                || level == FileInformation.FILE_ENDOFFILE_INFO) {
            // These are valid levels, skip assertion
            return;
        }

        IllegalArgumentException exception =
                assertThrows(IllegalArgumentException.class, () -> Trans2QueryPathInformation.mapInformationLevel(level));

    return "z";
  }

  @Override
  protected String getValueNotInPopulatedMap() throws UnsupportedOperationException {
    return "26";
  }

  /** Helper assertion comparing two maps */
  private void assertMapsEqual(Map<?, ?> expected, Map<?, ?> map) {
    assertEquals(expected, map);
    assertEquals(expected.hashCode(), map.hashCode());

    // cheats and does not attempt every possible permutation. Instead, it only considers wildcards
    // in the leftmost position. We assert this fact when we generate the public suffix file. If
    // this assertion ever fails we'll need to refactor this implementation.
    var wildcardMatch: String? = null
    if (domainLabelsUtf8Bytes.size > 1) {
      val labelsWithWildcard = domainLabelsUtf8Bytes.clone()

 *
 * @param <K> the type of keys used by the maps under test
 * @param <V> the type of mapped values used the maps under test
 * @author George van den Driessche
 */
// TODO: Descriptive assertion messages, with hints as to probable fixes.
// TODO: Add another constructor parameter indicating whether the class under test is ordered, and
// check the order if so.
// TODO: Refactor to share code with SetTestBuilder etc.

            UpgradeResult result = new UpgradeResult(largePomSet, largePomSet, Set.of());
            long endTime = System.currentTimeMillis();

            // Performance assertion - should complete within reasonable time
            long duration = endTime - startTime;
            assertTrue(duration < 1000, "UpgradeResult creation should complete within 1 second for 1000 POMs");

}

func (c *Content) Scan(src interface{}) error {
	var value Content
	str, ok := src.(string)
	if !ok {
		byt, ok := src.([]byte)
		if !ok {
			return errors.New("Embedded.Scan byte assertion failed")
		}
		if err := json.Unmarshal(byt, &value); err != nil {
			return err
		}
	} else {
		if err := json.Unmarshal([]byte(str), &value); err != nil {
			return err
		}
	}

 *       CheckedRunnable} and {@link CheckedCallable}).
 *   <li>If you override {@link #tearDown}, make sure to invoke {@code super.tearDown} within it.
 *       This method is used to clear and check for thread assertion failures.
 *   <li>All threads generated must be joined inside each test case method (or {@code fail} to do
 *       so) before returning from the method. The {@code joinPool} method can be used to do this

                fw.println(message);
            }
        } catch (IOException e) {
            throw UncheckedException.throwAsUncheckedException(e);
        }
        throw new GradleException("Documentation assertion failed: found invalid internal links. See " + new org.gradle.internal.logging.ConsoleRenderer().asClickableFileUrl(reportFile));
    }

    private void writeHeader(PrintWriter fw) {
        fw.println("# Valid links are:");