startSignal.countDown();

    try {
      doneSignal.await();
    } catch (InterruptedException e) {
      throw new RuntimeException(e);
    }

    map.cleanUp(); // force notifications
    assertTrue(listener.isEmpty());
    assertTrue(map.containsKey(one));
    assertEquals(1, map.size());
    assertSame(computedObject, map.get(one));
  }

    startSignal.countDown();

    try {
      doneSignal.await();
    } catch (InterruptedException e) {
      throw new RuntimeException(e);
    }

    map.cleanUp(); // force notifications
    assertTrue(listener.isEmpty());
    assertTrue(map.containsKey(one));
    assertEquals(1, map.size());
    assertSame(computedObject, map.get(one));
  }

  @Param("true")
  boolean precomputed;

  enum Size {
    DEFAULT,
    SMALL;
  }

  @Param Size size;

  // Whether to ensure there is a matching character in the first position
  // to force the trimming code to run.
  @Param("false")
  boolean forceSlow;

  // Use web-derived sampler.
  @Param("false")
  boolean web;

  private CharMatcher matcher;
  private String string;

  @Param("true")
  boolean precomputed;

  enum Size {
    DEFAULT,
    SMALL;
  }

  @Param Size size;

  // Whether to ensure there is a matching character in the first position
  // to force the trimming code to run.
  @Param("false")
  boolean forceSlow;

  // Use web-derived sampler.
  @Param("false")
  boolean web;

  private CharMatcher matcher;
  private String string;