// Ensure we get a unique execution exception on each get
    assertNotSame(ee1, ee2);

    assertThat(ee1).hasCauseThat().isSameInstanceAs(failure);
    assertThat(ee2).hasCauseThat().isSameInstanceAs(failure);

    checkStackTrace(ee1);
    checkStackTrace(ee2);
  }

  public void testCancel_notDoneNoInterrupt() throws Exception {

    // Ensure we get a unique execution exception on each get
    assertNotSame(ee1, ee2);

    assertThat(ee1).hasCauseThat().isSameInstanceAs(failure);
    assertThat(ee2).hasCauseThat().isSameInstanceAs(failure);

    checkStackTrace(ee1);
    checkStackTrace(ee2);
  }

  public void testCancel_notDoneNoInterrupt() throws Exception {

    Object key = new Object();
    Object value = new Object();
    LoadingCache<Object, Object> cache =
        builder.build(CacheLoader.from(Suppliers.ofInstance(value)));
    assertThat(cache.getUnchecked(key)).isSameInstanceAs(value);
    assertThat(cache.size()).isEqualTo(0);
    assertThat(cache.asMap().containsKey(key)).isFalse();
  }

  public void testCacheBuilderFrom_string() {
    CacheBuilder<?, ?> fromString =

      throws Exception {
    try {
      future.get();
      fail("Expected ExecutionException");
    } catch (ExecutionException e) {
      assertThat(e).hasCauseThat().isSameInstanceAs(expectedCause);
    }
  }

  /** invokeAny(null) throws NPE */
  public void testInvokeAnyImpl_nullTasks() throws Exception {
    ListeningExecutorService e = newDirectExecutorService();
    try {

      throws Exception {
    try {
      future.get();
      fail("Expected ExecutionException");
    } catch (ExecutionException e) {
      assertThat(e).hasCauseThat().isSameInstanceAs(expectedCause);
    }
  }

  /** invokeAny(null) throws NPE */
  public void testInvokeAnyImpl_nullTasks() throws Exception {
    ListeningExecutorService e = newDirectExecutorService();
    try {

        CacheBuilder.newBuilder().maximumSize(0).removalListener(listener).build(identityLoader());
    assertThat(nullCache.size()).isEqualTo(0);
    Object key = new Object();
    assertThat(nullCache.getUnchecked(key)).isSameInstanceAs(key);
    assertThat(listener.getCount()).isEqualTo(1);
    assertThat(nullCache.size()).isEqualTo(0);
    CacheTesting.checkEmpty(nullCache.asMap());
  }

  @GwtIncompatible // QueuingRemovalListener