}

  public void testFailOnExceptionFromStartUp() {
    TestService service = new TestService();
    service.startUpException = new Exception();
    IllegalStateException e =
        assertThrows(IllegalStateException.class, () -> service.startAsync().awaitRunning());
    assertThat(e).hasCauseThat().isEqualTo(service.startUpException);
    assertEquals(0, service.numberOfTimesRunCalled.get());

    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);

    ByteArrayDataInput in = ByteStreams.newDataInput(b);
    assertThrows(IllegalStateException.class, () -> in.readInt());
  }

  public void testNewDataInput_normal() {
    ByteArrayDataInput in = ByteStreams.newDataInput(bytes);
    assertEquals(0x12345678, in.readInt());
    assertEquals(0x76543210, in.readInt());
    assertThrows(IllegalStateException.class, () -> in.readInt());
  }

        // 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);
    }
  }

  /**

   *
   * @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();

  /**

    ByteArrayDataInput in = ByteStreams.newDataInput(b);
    assertThrows(IllegalStateException.class, () -> in.readInt());
  }

  public void testNewDataInput_normal() {
    ByteArrayDataInput in = ByteStreams.newDataInput(bytes);
    assertEquals(0x12345678, in.readInt());
    assertEquals(0x76543210, in.readInt());
    assertThrows(IllegalStateException.class, () -> in.readInt());
  }

    @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 {

            ipad[i] = IPAD;
            opad[i] = OPAD;
        }
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception ex) {
            throw new IllegalStateException(ex.getMessage());
        }
        engineReset();
    }

    private HMACT64(HMACT64 hmac) throws CloneNotSupportedException {
        super("HMACT64");
        this.ipad = hmac.ipad;

  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) {

  }

  public void testSampleVariance() {
    assertThrows(IllegalStateException.class, () -> EMPTY_STATS_VARARGS.sampleVariance());
    assertThrows(IllegalStateException.class, () -> EMPTY_STATS_ITERABLE.sampleVariance());
    assertThrows(IllegalStateException.class, () -> ONE_VALUE_STATS.sampleVariance());
    assertThat(TWO_VALUES_STATS.sampleVariance())
        .isWithin(ALLOWED_ERROR)