fun assertNoMoreTasks() {
    taskRunner.assertThreadDoesntHoldLock()

    taskRunner.lock.withLock {
      assertThat(activeThreads).isEqualTo(0)
    }
  }

  /** Unblock a waiting task thread. Used by the test thread only. */
  fun interruptCoordinatorThread() {
    taskRunner.assertThreadDoesntHoldLock()
    require(currentTask == TestThreadSerialTask)

    connection.setReadTimeout(500)
    try {
      connection.getResponseCode()
      fail<Any>()
    } catch (expected: SocketTimeoutException) {
    }

    // Shutting down the server should unblock the dispatcher.
    server.shutdown()
  }

  @Test
  fun requestUrlReconstructed() {
    server.enqueue(MockResponse().setBody("hello world"))
    val url = server.url("/a/deep/path?key=foo%20bar").toUrl()

    connection.readTimeout = 500
    try {
      connection.responseCode
      fail<Unit>()
    } catch (expected: SocketTimeoutException) {
      // Expected.
    }

    // Shutting down the server should unblock the dispatcher.
    server.shutdown()
  }

  @Test
  fun requestUrlReconstructed() {
    server.enqueue(
      MockResponse.Builder()
        .body("hello world")
        .build(),
    )