protected static final Reader ILLEGAL_STATE_READER = new Reader() {
        @Override
        public int read(final char[] cbuf, final int off, final int len) {
            throw new IllegalStateException("TokenStream contract violation: reset()/close() call missing, "
                    + "reset() called multiple times, or subclass does not call super.reset(). "

    ThrowOnStartUpService service = new ThrowOnStartUpService();
    assertFalse(service.startUpCalled);

    service.startAsync();
    IllegalStateException expected =
        assertThrows(IllegalStateException.class, () -> service.awaitRunning());
    assertThat(expected).hasCauseThat().hasMessageThat().isEqualTo("kaboom!");
    executionThread.join();

    assertTrue(service.startUpCalled);

   *
   * @throws IllegalStateException if the service reaches a state from which it is not possible to
   *     enter the {@link State#RUNNING} state. e.g. if the {@code state} is {@code
   *     State#TERMINATED} when this method is called then this will throw an IllegalStateException.
   * @since 15.0
   */
  void awaitRunning();

  /**

    }

    @Override
    Comparable<?> endpoint() {
      throw new IllegalStateException("range unbounded on this side");
    }

    @Override
    boolean isLessThan(Comparable<?> value) {
      return true;
    }

    @Override
    BoundType typeAsLowerBound() {
      throw new IllegalStateException();
    }

    @Override
    BoundType typeAsUpperBound() {

  public void testCheckState_simple_failure() {
    assertThrows(IllegalStateException.class, () -> checkState(false));
  }

  public void testCheckState_simpleMessage_success() {
    checkState(true, IGNORE_ME);
  }

  public void testCheckState_simpleMessage_failure() {
    IllegalStateException expected =
        assertThrows(IllegalStateException.class, () -> checkState(false, new Message()));

        // Handle this specially so that we can include the failureCause, if there is one.
        throw new IllegalStateException(
            "Expected the service " + this + " to be " + expected + ", but the service has FAILED",
            failureCause());
      }
      throw new IllegalStateException(
          "Expected the service " + this + " to be " + expected + ", but was " + actual);
    }
  }

  /**

          .put(ExecutionException.class, e -> e instanceof ExecutionException)
          .put(IllegalArgumentException.class, e -> e instanceof IllegalArgumentException)
          .put(IllegalStateException.class, e -> e instanceof IllegalStateException)
          .put(IndexOutOfBoundsException.class, e -> e instanceof IndexOutOfBoundsException)
          .put(NoSuchElementException.class, e -> e instanceof NoSuchElementException)

          .put(ExecutionException.class, e -> e instanceof ExecutionException)
          .put(IllegalArgumentException.class, e -> e instanceof IllegalArgumentException)
          .put(IllegalStateException.class, e -> e instanceof IllegalStateException)
          .put(IndexOutOfBoundsException.class, e -> e instanceof IndexOutOfBoundsException)
          .put(NoSuchElementException.class, e -> e instanceof NoSuchElementException)

  public void start() throws Exception {
    if (mockWebServer != null) throw new IllegalStateException();

    mockWebServer = new MockWebServer();
    mockWebServer.setDispatcher(this);
    mockWebServer.start(slackApi.port);
  }

  public HttpUrl newAuthorizeUrl(String scopes, String team, Listener listener) {
    if (mockWebServer == null) throw new IllegalStateException();

    ByteString state = randomToken();
    synchronized (this) {

    @Override
    protected void doStart() {
      notifyFailed(new IllegalStateException("start failure"));
    }
  }

  private static class FailRunService extends NoOpService {
    @Override
    protected void doStart() {
      super.doStart();
      notifyFailed(new IllegalStateException("run failure"));
    }
  }

  private static class FailStopService extends NoOpService {