ReactIntegrationTestCase.java 文件源码

public void shutDownContext() {
  if (mInstance != null) {
    final ReactContext contextToDestroy = mReactContext;
    mReactContext = null;
    mInstance = null;

    final SimpleSettableFuture<Void> semaphore = new SimpleSettableFuture<>();
    UiThreadUtil.runOnUiThread(new Runnable() {
      @Override
      public void run() {
        if (contextToDestroy != null) {
          contextToDestroy.destroy();
        }
        semaphore.set(null);
      }
    });
    semaphore.getOrThrow();
  }
}