return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcSamrCloseHandle.class));

        // First close call
        handle.close();

        // Act
        // Second close call
        handle.close();

        // Assert
        // sendrecv for open is called once
        verify(mockDcerpcHandle, times(1)).sendrecv(any(MsrpcSamrOpenDomain.class));

        LogStream instance2 = LogStream.getInstance();

        // Each setInstance should create a new LogStream
        assertNotNull(instance1);
        assertNotNull(instance2);
        // The second setInstance replaces the first, so they should not be the same
        assertNotSame(instance1, instance2);
        // Getting instance again should return the same as instance2

        assertTrue(ipcSigningEnforced, "Should delegate IPC signing enforced setting");
        assertTrue(firstExtendedSecurityCall, "First call should return true");
        assertFalse(secondExtendedSecurityCall, "Second call should return false");

        verify(mockDelegate).isEncryptionEnabled();
        verify(mockDelegate).isSigningEnabled();
        verify(mockDelegate).isSigningEnforced();

  }

  @Test fun successfulFindMatchingPins() {
    val certificatePinner =
      CertificatePinner
        .Builder()
        .add("first.com", certA1Sha256Pin, certB1Sha256Pin)
        .add("second.com", certC1Sha256Pin)
        .build()

    val expectedPins =
      listOf(
        Pin("first.com", certA1Sha256Pin),
        Pin("first.com", certB1Sha256Pin),
      )

        // Then
        assertEquals(2, written, "Should write 2 bytes");
        assertEquals(SmbComTransaction.TRANS2_FIND_NEXT2, dst[0], "First byte must be subCommand");
        assertEquals((byte) 0x00, dst[1], "Second byte must be 0");
    }

    /**
     * Validates writeParametersWireFormat encodes values in the correct order and endianness.
     */
    @Test
    void testWriteParametersWireFormat() {
        // Given

#### A "professional" attack { #a-professional-attack }

Of course, the attackers would not try all this by hand, they would write a program to do it, possibly with thousands or millions of tests per second. And they would get just one extra correct letter at a time.

func (m *metacacheManager) initManager() {
	// Add a transient bucket.
	// Start saver when object layer is ready.
	go func() {
		objAPI := newObjectLayerFn()
		for objAPI == nil {
			time.Sleep(time.Second)
			objAPI = newObjectLayerFn()
		}

		t := time.NewTicker(time.Minute)
		defer t.Stop()

		var exit bool
		for !exit {
			select {
			case <-t.C:
			case <-GlobalContext.Done():
				exit = true

        // Check first level cause
        assertNotNull(exception.getCause());
        assertEquals("Intermediate problem", exception.getCause().getMessage());

        // Check second level cause
        assertNotNull(exception.getCause().getCause());
        assertEquals("Root problem", exception.getCause().getCause().getMessage());
    }

    public void test_messageWithSpecialCharacters() {

    }

  private var body: Buffer? = null

  var throttleBytesPerPeriod: Long = Long.MAX_VALUE
    private set
  private var throttlePeriodAmount = 1L
  private var throttlePeriodUnit = TimeUnit.SECONDS

  @set:JvmName("socketPolicy")
  var socketPolicy: SocketPolicy = SocketPolicy.KEEP_OPEN

  @set:JvmName("http2ErrorCode")
  var http2ErrorCode: Int = -1

  private var bodyDelayAmount = 0L

        SamrPolicyHandle handle = new SamrPolicyHandle(mockHandle, server, access);
        handle.close(); // First close
        handle.close(); // Second close

        // Verify sendrecv for close was called only once
        verify(mockHandle, times(1)).sendrecv(any(MsrpcSamrCloseHandle.class));
    }

    @Test