val mainMethod =
      Class
        .forName(className)
        .methods
        .find { it.name == "main" }
    try {
      if (mainMethod != null) {
        if (mainMethod.parameters.isEmpty()) {
          mainMethod.invoke(null)
        } else {
          mainMethod.invoke(null, arrayOf<String>())
        }
      } else {
        System.err.println("No main for $className")
      }

 *
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked
public class MoreCollectorsTest extends TestCase {
  public void testToOptionalEmpty() {
    assertThat(Stream.empty().collect(toOptional())).isEmpty();
  }

  public void testToOptionalSingleton() {
    assertThat(Stream.of(1).collect(toOptional())).hasValue(1);
  }

  public void testToOptionalNull() {

    public MavenExecutionResult addException(Throwable t) {
        exceptions.add(t);

        return this;
    }

    @Override
    public boolean hasExceptions() {
        return !getExceptions().isEmpty();
    }

    @Override
    public BuildSummary getBuildSummary(MavenProject project) {
        return buildSummaries.get(project);
    }

    @Override

        String requiredMavenVersion = pluginDescriptor.getRequiredMavenVersion();

        boolean isBlankVersion =
                requiredMavenVersion == null || requiredMavenVersion.trim().isEmpty();

        if (!isBlankVersion) {
            boolean isRequirementMet = false;
            try {
                isRequirementMet = runtimeInformation.isMavenVersion(requiredMavenVersion);

    /**
     * Reads all stories in the folders provided, asserts if no story found.
     */
    @JvmStatic
    protected fun createStories(interopTests: Array<String>): List<Any> {
      if (interopTests.isEmpty()) return listOf<Any>(Story.MISSING)

      val result = mutableListOf<Any>()
      for (interopTestName in interopTests) {
        val stories = HpackJsonUtil.readStories(interopTestName)
        result.addAll(stories)

    @Inject
    RuntimeInformation rtInfo;

    @Test
    void testGetMavenVersion() {
        String mavenVersion = rtInfo.getMavenVersion();
        assertNotNull(mavenVersion);
        assertTrue(!mavenVersion.isEmpty(), "Expected Maven version to not be empty but was: " + mavenVersion);
    }

    @Test
    void testIsMavenVersion() {
        assertTrue(rtInfo.isMavenVersion("2.0"));
        assertFalse(rtInfo.isMavenVersion("9.9"));

        this.propertyTableRenderer = propertyTableRenderer;
    }

    public void renderTo(ClassExtensionDoc extension, Element parent) {
        if (extension.getExtensionProperties().isEmpty()) {
            return;
        }

        Document document = parent.getOwnerDocument();

        Element section = document.createElement("section");
        parent.appendChild(section);

     * {@link ReflectionValueExtractor} class.</p>
     */
    @Override
    public Object getValue(String expression) {
        if (expression == null || expression.trim().isEmpty()) {
            return null;
        }

        try {
            return ReflectionValueExtractor.evaluate(expression, root, false);
        } catch (Exception e) {

    assertThat(getSubscriber().overriddenAndAnnotatedInSubclassEvents).contains(EVENT);
  }

  public void testOverriddenInSubclassNowhereAnnotated() {
    assertThat(getSubscriber().overriddenInSubclassNowhereAnnotatedEvents).isEmpty();
  }

  @Override
  SubClass createSubscriber() {
    return new SubClass();
  }

      fromList.subList(fromIndex, toIndex).clear();
    }

    @Override
    public int size() {
      return fromList.size();
    }

    @Override
    public boolean isEmpty() {
      return fromList.isEmpty();
    }

    @Override
    public ListIterator<T> listIterator(int index) {
      return new TransformedListIterator<F, T>(fromList.listIterator(index)) {
        @Override