when(cfg.getMaximumBufferSize()).thenReturn(5);

        BufferCacheImpl impl = new BufferCacheImpl(cfg);

        // Verify interactions happen exactly once during construction
        verify(cfg, times(1)).getBufferCacheSize();
        verify(cfg, times(1)).getMaximumBufferSize();
        verifyNoMoreInteractions(cfg);

        // When cache is empty, getBuffer allocates a new buffer with configured size

    void testFileEntryInterface() {
        // Verify that SmbShareInfo properly implements FileEntry interface
        SmbShareInfo info = new SmbShareInfo(TEST_NET_NAME, TEST_TYPE, TEST_REMARK);

        // Cast to FileEntry to ensure interface is properly implemented
        jcifs.smb.FileEntry fileEntry = info;

        // Verify all FileEntry methods work
        assertEquals(TEST_NET_NAME, fileEntry.getName());

     * @param length
     *            The length of the data to verify
     * @param extraPad
     *            extra padding to include in signature
     * @param msg
     *            The message to verify
     * @return whether verification was unsuccessful
     */
    boolean verify(byte[] data, int offset, int length, int extraPad, CommonServerMessageBlock msg);

        it.close();

        // Verify interactions: one create, two additional directory queries (for fetchMore), one close
        verify(tree, times(1)).send(argThat((Request<?> r) -> r instanceof Smb2CreateRequest));
        verify(tree, times(2)).send(argThat((Request<?> r) -> r instanceof Smb2QueryDirectoryRequest));
        verify(tree, times(1)).send(argThat((Request<?> r) -> r instanceof Smb2CloseRequest));

    }

    @Test
    void messageAndCauseConstructor_setsMessageAndCause_withoutInteractingWithCause() {
        // Arrange - mock cause to verify no interactions are needed to construct
        Throwable cause = Mockito.mock(Throwable.class);
        String message = "forced downgrade detected";

        // Act

            // Verify each is a power of 2
            for (int cap : capabilities) {
                assertTrue(isPowerOfTwo(cap), "Capability 0x" + Integer.toHexString(cap) + " should be a power of 2");
            }

            // Verify no overlapping bits
            for (int i = 0; i < capabilities.length; i++) {

        // Then
        // These fields are protected in parent class, so we can't access them directly
        // We verify the object was created successfully instead
        assertNotNull(trans2GetDfsReferral);

        // Verify that request buffer was created with correct parameters
        Field requestField = Trans2GetDfsReferral.class.getDeclaredField("request");

            Smb2EchoRequest request = new Smb2EchoRequest(mockConfig);
            assertNotNull(request);

            // Verify command is set to SMB2_ECHO (0x000D)
            assertEquals(0x000D, request.getCommand());

            // Verify configuration is set
            Field configField = ServerMessageBlock2.class.getDeclaredField("config");
            configField.setAccessible(true);

      numCallsToNewTargetIterator++;
      return Lists.newArrayList(1).iterator();
    }

    @Override
    protected void verify(List<Integer> elements) {
      numCallsToVerify++;
      super.verify(elements);
    }
  }

  public void testVerifyGetsCalled() {
    TesterThatCountsCalls tester = new TesterThatCountsCalls();

    tester.test();

		c.Fatalf("policy add error: %v", err)
	}

	// 2. Verify that policy json is validated by server
	invalidPolicyBytes := policyBytes[:len(policyBytes)-1]
	err = s.adm.AddCannedPolicy(ctx, policy1+"invalid", invalidPolicyBytes)
	if err == nil {
		c.Fatalf("invalid policy creation success")
	}

	// 3. Create a user, associate policy and verify access
	accessKey, secretKey := mustGenerateCredentials(c)