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

你可以创建一个第一层依赖项（“dependable”），如下：

{* ../../docs_src/dependencies/tutorial005_an_py310.py hl[8:9] *}

这段代码声明了类型为 `str` 的可选查询参数 `q`，然后返回这个查询参数。

这个函数很简单（不过也没什么用），但却有助于让我们专注于了解子依赖项的工作方式。

## 第二层依赖项，“dependable”和“dependant” { #second-dependency-dependable-and-dependant }

接下来，创建另一个依赖项函数（一个“dependable”），并同时为它自身再声明一个依赖项（因此它同时也是一个“dependant”）：

{* ../../docs_src/dependencies/tutorial005_an_py310.py hl[13] *}

这里重点说明一下声明的参数：

        createTest("SomeOtherTest")
        then:
        def result = gradleRunner("test").build()
        result.output.contains("AnotherTest6 total executions: 2")
        // triggered only in the second overall run
        and: 'Tracing is provided'
        result.output.contains("""================
Test jvm exited unexpectedly.
Test jvm system exit trace (run: 1)
Gradle Test Executor 1 > AnotherTest6 > someTest

	if err != nil {
		t.Fatalf("unable create credential, %s", err)
	}

	globalActiveCred = creds

	globalIAMSys.Init(ctx, objLayer, globalEtcdClient, 2*time.Second)

	// List of test cases for validating http request authentication.
	testCases := []struct {
		req     *http.Request
		s3Error APIErrorCode
	}{
		// When request is unsigned, access denied is returned.

    )

  fun connectionCount(): Int = connectionCount.get()

  fun shutdown() {
    serverSocket!!.close()
    executor.shutdown()
    if (!executor.awaitTermination(5, TimeUnit.SECONDS)) {
      throw IOException("Gave up waiting for executor to shut down")
    }
  }

  private fun service(from: Socket) {
    val name = "SocksProxy ${from.remoteSocketAddress}"
    threadName(name) {
      try {

        // Schedule periodic health checks
        scheduler.scheduleAtFixedRate(this::performHealthCheck, 10, 10, TimeUnit.SECONDS);

        // Schedule interface discovery
        scheduler.scheduleAtFixedRate(this::discoverInterfaces, 0, 30, TimeUnit.SECONDS);
    }

    /**
     * Initialize multi-channel support
     *
     * @throws IOException if initialization fails
     */

   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is
   * implemented as "no-effort". No interrupts or other attempts are made to stop threads executing
   * tasks. Second, the returned list will always be empty, as any submitted task is considered to
   * have started execution. This applies also to tasks given to {@code invokeAll} or {@code

            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

	}
}

func TestTransactionWithDefaultTimeout(t *testing.T) {
	db, err := OpenTestConnection(&gorm.Config{DefaultTransactionTimeout: 2 * time.Second})
	if err != nil {
		t.Fatalf("failed to connect database, got error %v", err)
	}

	tx := db.Begin()
	time.Sleep(3 * time.Second)
	if err = tx.Find(&User{}).Error; err == nil {
		t.Errorf("should return error when transaction timeout, got error %v", err)
	}