}
    }
  }

  @Synchronized private fun initUncaughtException(throwable: Throwable) {
    if (uncaughtException == null) {
      uncaughtException = throwable
    }
  }

  @Synchronized fun takeUncaughtException(): Throwable? =
    uncaughtException
      .also { uncaughtException = null }

  fun ensureAllConnectionsReleased() {
    testClient?.let {
      val connectionPool = it.connectionPool

  private RuntimeWrapper runtimeMock;

  @Override
  protected void setUp() {
    runtimeMock = mock(RuntimeWrapper.class);
  }

  public void testExiter() {
    new Exiter(runtimeMock).uncaughtException(new Thread(), new Exception());
    verify(runtimeMock).exit(1);
  }

  private RuntimeWrapper runtimeMock;

  @Override
  protected void setUp() {
    runtimeMock = mock(RuntimeWrapper.class);
  }

  public void testExiter() {
    new Exiter(runtimeMock).uncaughtException(new Thread(), new Exception());
    verify(runtimeMock).exit(1);
  }