If var_name has been set as environment variable, use the preset value, else
  ask for user input. If no input is provided, the default is used.

  Args:
    environ_cp: copy of the os.environ.
    var_name: string for name of environment variable, e.g. "TF_NEED_CUDA".
    ask_for_var: string for how to ask for user input.
    var_default: default value string.

  Returns:
    string value for var_name

* the GitHub issue

* the performance
* the performance optimization

* the return type
* the return value

* the security
* the security scheme

* the task
* the background task
* the task function

* the template
* the template engine

* the type annotation
* the type hint

* the server worker
* the Uvicorn worker
* the Gunicorn Worker
* the worker process

 * other {@code Future}, be {@linkplain #cancel cancelled}.
 *
 * <p>{@code SettableFuture} is the recommended {@code ListenableFuture} implementation when your
 * task cannot be implemented with {@link ListeningExecutorService}, the various {@link Futures}
 * utility methods, or {@link ListenableFutureTask}. Those APIs have less opportunity for developer

import java.util.List;

import static org.elasticsearch.gradle.internal.vagrant.VagrantMachine.convertLinuxPath;
import static org.elasticsearch.gradle.internal.vagrant.VagrantMachine.convertWindowsPath;

/**
 * Run a gradle task of the current build, within the configured vagrant VM.
 */
public class GradleDistroTestTask extends VagrantShellTask {

    private String taskName;
    private String testClass;

            "Rollup",
            "SQL",
            "Search",
            "Security",
            "Snapshot/Restore",
            "Store",
            "Suggesters",
            "TLS",
            "Task Management",
            "Transform"
          ]
        },
        "type": {
          "type": "string",
          "enum": [
            "breaking",
            "breaking-java",
            "bug",

        return new org.codehaus.plexus.util.xml.Xpp3Dom(dom);
    }

    // org.apache.maven.plugins:maven-remote-resources-plugin:1.0:process@executionId

    public MojoDescriptor getMojoDescriptor(String task, MavenSession session, MavenProject project)
            throws PluginNotFoundException, PluginResolutionException, PluginDescriptorParsingException,

                if (connection != null) {
                    connection.disconnect();
                }
            }
        };
        if (threadPool != null) {
            threadPool.execute(task);
        } else {
            task.run();
        }
    }

    /**
     * Opens a connection to the specified URL.
     *
     * @param u the URL
     * @return the HttpURLConnection

テスト関数が非同期になったので、FastAPI アプリへのリクエスト送信以外の `async` 関数も、コードの他の場所と同様に呼び出して（`await` して）使えます。

/// tip | 豆知識

テストに非同期関数呼び出しを統合した際に（例: [MongoDB の MotorClient](https://stackoverflow.com/questions/41584243/runtimeerror-task-attached-to-a-different-loop) 使用時）、`RuntimeError: Task attached to a different loop` に遭遇した場合は、イベントループを必要とするオブジェクトは非同期関数内でのみインスタンス化するようにしてください。例えば `@app.on_event("startup")` コールバック内で行います。

    assertThat(exceptions).isEmpty();
  }

  private static List<Throwable> runThreadsAndReturnExceptions(int numThreads, Runnable task) {
    List<Thread> threads = new ArrayList<>(numThreads);
    List<Throwable> exceptions = new ArrayList<>(numThreads);
    for (int i = 0; i < numThreads; i++) {
      Thread thread = new Thread(task);

01-01 12:53:32.818 10999 11090 D OkHttp  : [56 ms] callEnd
```

3. Run tests using gradle

```
$ ANDROID_SDK_ROOT=/Users/myusername/Library/Android/sdk ./gradlew :regression-test:connectedCheck
...
> Task :regression-test:connectedDebugAndroidTest
...
11:55:40 V/InstrumentationResultParser: Time: 13.271
11:55:40 V/InstrumentationResultParser:
11:55:40 V/InstrumentationResultParser: OK (12 tests)
...