void testInitSecContextNullBufferNonZeroLen() throws Exception {
        SpnegoContext ctx = newContext();
        // A null buffer with non-zero len leads to NPE while slicing input
        assertThrows(NullPointerException.class, () -> ctx.initSecContext(null, 0, 1));
        verify(this.mechContext, never()).initSecContext(any(), anyInt(), anyInt());
    }

    @Test

        assertTrue(log.matches(".*used [0-9.]+[a-zA-Z]+, heap [0-9.]+[a-zA-Z]+, max [0-9.]+[a-zA-Z]+.*"));
    }

    public void test_byteCountToDisplaySize_edgeCases() {
        // Test negative values - should throw NullPointerException in private method via BigInteger.valueOf
        try {
            MemoryUtil.byteCountToDisplaySize(-1L);
            // If no exception, verify it handles negative as expected
        } catch (Exception e) {

  @Override
  public void setUp() {
    fakePool = new FakeExecutor();
    e = new SequentialExecutor(fakePool);
  }

  public void testConstructingWithNullExecutor_fails() {
    assertThrows(NullPointerException.class, () -> new SequentialExecutor(null));
  }

  public void testBasics() {
    AtomicInteger totalCalls = new AtomicInteger();
    Runnable intCounter =
        new Runnable() {
          @Override

        assertEquals("Not supported", ex.getMessage());
    }

    @Test
    @DisplayName("Null delegate causes NPE")
    void nullDelegate() {
        assertThrows(NullPointerException.class, () -> {
            new FileEntryAdapterIterator(parent, null, null) {
                @Override
                protected SmbResource adapt(FileEntry e) {
                    return resource;

    void nullReference_throwsNPE() {
        // Arrange
        FileEntry e = null;
        // Act & Assert: demonstrate invalid usage results in NPE
        assertThrows(NullPointerException.class, () -> e.getName());
    }

    @Nested
    @DisplayName("Mockito stubbing for edge cases")
    class MockitoEdgeCases {
        @Test

    public void test_constructor_nullConfig() {
        try {
            new FessTimeResourceProvider(null);
            // Constructor may accept null, so test continues
            assertTrue(true);
        } catch (NullPointerException e) {
            // Expected if constructor validates input
            assertTrue(true);
        }
    }

    // Test with different time adjustments
    public void test_withDifferentTimeAdjustments() {

     */
    @SuppressWarnings("unchecked")
    public static <T> T getComponent(final Class<T> clazz) {
        try {
            return SingletonLaContainer.getComponent(clazz);
        } catch (final NullPointerException e) {
            if (logger.isDebugEnabled()) {
                throw new ContainerNotAvailableException(clazz.getCanonicalName(), e);
            }

  public void testEncloseAll_nullValue() {
    List<@Nullable Integer> nullFirst = Lists.newArrayList(null, 0);
    assertThrows(NullPointerException.class, () -> Range.encloseAll((List<Integer>) nullFirst));
    List<@Nullable Integer> nullNotFirst = Lists.newArrayList(0, null);
    assertThrows(NullPointerException.class, () -> Range.encloseAll((List<Integer>) nullNotFirst));
  }

  public void testEquivalentFactories() {

    void testGetInfoWithTypeWhenNull() {
        response = new Trans2QueryPathInformationResponse(mockConfig, FileInformation.FILE_BASIC_INFO);

        assertThrows(NullPointerException.class, () -> {
            response.getInfo(FileBasicInfo.class);
        });
    }

    @Test
    @DisplayName("Test getInfo with compatible type")
    void testGetInfoWithCompatibleType() throws Exception {

        });
    }

    @Test
    @DisplayName("Should handle parsing null message bytes")
    void testNullMessageBytes() {
        // When/Then
        assertThrows(NullPointerException.class, () -> {
            new Type1Message((byte[]) null);
        });
    }

    @Test
    @DisplayName("Should create string representation")
    void testStringRepresentation() {