assertTrue(echoResponse.isError());
            assertTrue(echoResponse.isReceived());
            assertEquals(testException, echoResponse.getException());
        }

        @Test
        @DisplayName("Should clear received state")
        void testClearReceived() {
            echoResponse.received();
            assertTrue(echoResponse.isReceived());

    assertEquals("**.example.co.uk", pin.pattern)
    assertTrue(pin.matchesHostname("www.example.co.uk"))
    assertTrue(pin.matchesHostname("gopher.example.co.uk"))
    assertFalse(pin.matchesHostname("www.example.com"))
  }

  @Test fun testMatchesSha256() {
    val pin = Pin("example.com", certA1Sha256Pin)
    assertTrue(pin.matchesCertificate(certA1.certificate))

        // When
        String result = instance.toString();

        // Then
        assertNotNull(result);
        assertTrue(result.contains("SmbComWriteAndXResponse"));
        assertTrue(result.contains("count=0"));
    }

  }

  public void testOpenBufferedStream() throws IOException {
    OutputStream out = sink.openBufferedStream();
    assertTrue(sink.wasStreamOpened());
    assertFalse(sink.wasStreamClosed());

    out.write(new byte[] {1, 2, 3, 4});
    out.close();

    assertTrue(sink.wasStreamClosed());
    assertArrayEquals(new byte[] {1, 2, 3, 4}, sink.getBytes());
  }

        try {
            MessageDigestUtil.digest(null, text);
            assertTrue(false);
        } catch (final EmptyArgumentException e) {
            assertTrue(true);
        }
        try {
            MessageDigestUtil.digest("HOGE", text);
            assertTrue(false);
        } catch (final NoSuchAlgorithmRuntimeException e) {
            assertTrue(true);
        }
    }

        // Act
        String s = ex.toString();

        // Assert
        assertTrue(s.contains("SMBSignatureValidationException"), "toString should include class name");
        assertTrue(s.contains(msg), "toString should include message when provided");
    }

        assertTrue(provider.isAvailable(), "Returned provider should be available");
    }

    @Test
    public void testCreateProviderTcp() {
        RdmaProvider provider = RdmaProviderFactory.createProvider("tcp");
        assertNotNull(provider, "TCP provider should always be available");
        assertTrue(provider.isAvailable(), "TCP provider should be available");

        };

        File tempFile = ResponseDataUtil.createResponseBodyFile(responseData);

        assertNotNull(tempFile);
        assertTrue(tempFile.exists());

        // Verify file permissions (readable and writable by owner)
        assertTrue(tempFile.canRead());
        assertTrue(tempFile.canWrite());

        // Clean up
        tempFile.delete();
    }

    void testToString() throws Exception {
        Trans2GetDfsReferral cmd = new Trans2GetDfsReferral("/bar");
        String s = cmd.toString();
        assertTrue(s.contains("Trans2GetDfsReferral["));
        assertTrue(s.contains("filename=/bar"));
        assertTrue(s.contains("maxReferralLevel=0x3"));
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 5, -1, 65534 })
    @DisplayName("referral level variations")

    assertThat(resultFuture.toString()).contains(outputFuture.toString());
  }

  public void testFutureCancelBeforeInputCompletion() throws Exception {
    assertTrue(resultFuture.cancel(true));
    assertTrue(resultFuture.isCancelled());
    assertTrue(inputFuture.isCancelled());
    assertFalse(outputFuture.isCancelled());
    assertThrows(CancellationException.class, () -> resultFuture.get());
  }