Monitor monitor = new Monitor();
    assertThrows(IllegalMonitorStateException.class, () -> monitor.leave());
  }

  public void testGetWaitQueueLengthWithWrongMonitorThrowsIMSE() {
    Monitor monitor1 = new Monitor();
    Monitor monitor2 = new Monitor();
    FlagGuard guard = new FlagGuard(monitor2);
    assertThrows(IllegalMonitorStateException.class, () -> monitor1.getWaitQueueLength(guard));
  }

    Monitor monitor = new Monitor();
    assertThrows(IllegalMonitorStateException.class, () -> monitor.leave());
  }

  public void testGetWaitQueueLengthWithWrongMonitorThrowsIMSE() {
    Monitor monitor1 = new Monitor();
    Monitor monitor2 = new Monitor();
    FlagGuard guard = new FlagGuard(monitor2);
    assertThrows(IllegalMonitorStateException.class, () -> monitor1.getWaitQueueLength(guard));
  }

          monitor1.enter();
        }
        try {
          method.invoke(monitor1, arguments.toArray());
          fail("expected IllegalMonitorStateException");
        } catch (InvocationTargetException e) {
          assertThat(e.getTargetException()).isInstanceOf(IllegalMonitorStateException.class);
        } finally {
          if (occupyMonitor) {
            monitor1.leave();
          }
        }
      }
    };