int expectedHashCode = 0;
    for (E element : elements) {
      expectedHashCode += (element == null) ? 0 : element.hashCode();
    }

    elements.add(null);
    collection = getSubjectGenerator().create(elements.toArray());
    assertEquals(
        "A Set's hashCode() should be the sum of those of its elements (with "
            + "a null element counting as having a hash of zero).",
        expectedHashCode,
        getSet().hashCode());

                if (entry.getPr() == null) {
                    throw new GradleException(
                        "[" + path + "] must provide a [pr] number (only 'known-issue' and " + "'security' entries can omit this"
                    );
                }

                if (entry.getArea() == null) {
                    throw new GradleException(

        QueryLog queryLog = new QueryLog("test query", null);

        assertNotNull(queryLog);
        assertEquals("test query", queryLog.getQueryString());
        assertNull(queryLog.getFilterQueryString());
    }

    @Test
    public void test_getQueryString() throws Exception {
        QueryLog queryLog = new QueryLog("search term", null);

        assertEquals("search term", queryLog.getQueryString());
    }

    notEqualObject1 = new ValidTestObject(0, 2);
  }

  /** Test null reference yields error */
  public void testAddNullReference() {
    assertThrows(NullPointerException.class, () -> equalsTester.addEqualityGroup((Object) null));
  }

  /** Test equalObjects after adding multiple instances at once with a null */
  public void testAddTwoEqualObjectsAtOnceWithNull() {
    assertThrows(

        objAttr.decode(mockNdrBuffer);

        assertEquals(100, objAttr.length);
        assertNull(objAttr.root_directory); // null because _root_directoryp was 0
        assertNull(objAttr.object_name); // Should be null when _object_namep is 0

   */
  public void add(Runnable runnable, Executor executor) {
    // Fail fast on a null. We throw NPE here because the contract of Executor states that it throws
    // NPE on null listener, so we propagate that contract up into the add method as well.
    checkNotNull(runnable, "Runnable was null.");
    checkNotNull(executor, "Executor was null.");

    // Lock while we check state. We must maintain the lock while adding the new pair so that

    }

    @Test
    public void test_constructor_withNullComponentName() {
        // Test constructor with null component name
        ContainerNotAvailableException exception = new ContainerNotAvailableException((String) null);

        assertEquals("null is not available.", exception.getMessage());
        assertNull(exception.getCause());
        assertNull(exception.getComponentName());
    }

   *
   * @param key the non-null key whose value should be loaded
   * @param oldValue the non-null old value corresponding to {@code key}
   * @return the future new value associated with {@code key}; <b>must not be null, must not return
   *     null</b>
   * @throws Exception if unable to reload the result

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNullTypeAndMessage() {
        // Test constructor with both null type and message
        String type = null;
        String message = null;
        InvalidAccessTokenException exception = new InvalidAccessTokenException(type, message);

        assertNull(exception.getType());
        assertNull(exception.getMessage());

                        parent.getVersion());
            }

            if (versionRangeResult.getVersionConstraint() != null
                    && versionRangeResult.getVersionConstraint().getRange() != null
                    && versionRangeResult.getVersionConstraint().getRange().getUpperBound() == null) {
                // Message below is checked for in the MNG-2199 core IT.
                throw new UnresolvableModelException(