private Entry<K, V> presentKeyNullValueEntry;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    nullKeyEntry = entry(null, v3());
    nullValueEntry = entry(k3(), null);
    nullKeyValueEntry = entry(null, null);
    presentKeyNullValueEntry = entry(k0(), null);
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPut_supportedPresent() {

        }
    }

    @Nested
    @DisplayName("Invalid and null inputs")
    class InvalidInputs {
        @Test
        @DisplayName("getSigningKey throws when unavailable")
        void testGetSigningKeyThrows() {
            DummySSPContext ctx = new DummySSPContext(null, false, null, null, 0, false);
            CIFSException ex = assertThrows(CIFSException.class, ctx::getSigningKey);

        }

        @Test
        @DisplayName("getName() should handle null return value")
        void testGetNameWithNull() {
            CreateContextResponse response = mock(CreateContextResponse.class);
            when(response.getName()).thenReturn(null);

            byte[] actualName = response.getName();
            assertEquals(null, actualName);
        }

        @Test

        if (contextClassLoader != null) {
            return contextClassLoader;
        }

        final ClassLoader targetClassLoader = targetClass.getClassLoader();
        final ClassLoader thisClassLoader = ClassLoaderUtil.class.getClassLoader();
        if (targetClassLoader != null && thisClassLoader != null) {
            if (isAncestor(thisClassLoader, targetClassLoader)) {

    node.thread = null; // mark as 'deleted'
    restart:
    while (true) {
      Waiter pred = null;
      Waiter curr = waitersField;
      if (curr == Waiter.TOMBSTONE) {
        return; // give up if someone is calling complete
      }
      Waiter succ;
      while (curr != null) {
        succ = curr.next;
        if (curr.thread != null) { // we aren't unlinking this node, update pred.

    void nullOptions_throwOnAccess() {
        // Arrange
        StaticJAASConfiguration cfg = new StaticJAASConfiguration(null);

        // Act + Assert
        assertThrows(IllegalArgumentException.class, () -> cfg.getAppConfigurationEntry("any"),
                "JAAS AppConfigurationEntry requires non-null options");
    }

    @Test

        doUpdate(entity, null);
    }

    public void insertOrUpdate(WebAuthentication entity) {
        doInsertOrUpdate(entity, null, null);
    }

    public void insertOrUpdate(WebAuthentication entity, RequestOptionCall<IndexRequestBuilder> opLambda) {
        entity.asDocMeta().indexOption(opLambda);
        doInsertOrUpdate(entity, null, null);
    }

        assertEquals(-1, problem.getColumnNumber());

        problem = new DefaultProblem(null, null, null, -1, 42, null);
        assertEquals(42, problem.getColumnNumber());

        problem = new DefaultProblem(null, null, null, -1, Integer.MAX_VALUE, null);
        assertEquals(Integer.MAX_VALUE, problem.getColumnNumber());

        // this case is not specified, might also return -1

            return false;
        }
        if (value2 == null) {
            if (other.value2 != null) {
                return false;
            }
        } else if (!value2.equals(other.value2)) {
            return false;
        }
        if (value3 == null) {
            if (other.value3 != null) {
                return false;
            }

            sids[si].origin_server = null;
            sids[si].origin_auth = null;
        }
    }

    static void resolveSids0(final String authorityServerName, final NtlmPasswordAuthentication auth, final SID[] sids) throws IOException {
        DcerpcHandle handle = null;
        LsaPolicyHandle policyHandle = null;

        synchronized (sid_cache) {
            try {