taskFaker.runTasks()
    client.listener.assertFailure(IOException::class.java, "source is closed")
    assertThat(client.webSocket!!.send("Hello!")).isFalse()
  }

  @Test
  fun socketClosedDuringMessageKillsWebSocket() {
    server.source.close()
    assertThat(client.webSocket!!.send("Hello!")).isTrue()
    taskFaker.runTasks()

 * deterministic.
 *
 * This class ensures that at most one thread is running at a time. This is initially the JUnit test
 * thread, which yields its execution privilege while calling [runTasks], [runNextTask], or
 * [advanceUntil]. These functions don't return until the task threads are all idle.
 *
 * Task threads release their execution privilege in these ways:
 *

    address: Address,
    policy: AddressPolicy,
  ) {
    pool.setPolicy(address, policy)
    taskFaker.runTasks()
  }

  private fun evictAllConnections(pool: RealConnectionPool) {
    pool.evictAll()
    assertThat(pool.connectionCount()).isEqualTo(0)
    taskFaker.runTasks()
  }

  private fun forceConnectionsToExpire(
    pool: RealConnectionPool,
    expireTime: Long,
  ) {