expectAdded(e3());
  }

  @MapFeature.Require({FAILS_FAST_ON_CONCURRENT_MODIFICATION, SUPPORTS_PUT})
  @CollectionSize.Require(absent = ZERO)
  public void testPutAllSomePresentConcurrentWithEntrySetIteration() {
    try {
      Iterator<Entry<K, V>> iterator = getMap().entrySet().iterator();
      putAll(MinimalCollection.of(e3(), e0()));
      iterator.next();
      fail("Expected ConcurrentModificationException");

  public void testAddAll_unsupportedSomePresent() {
    try {
      collection.addAll(MinimalCollection.of(e3(), e0()));
      fail("addAll(somePresent) should throw");
    } catch (UnsupportedOperationException expected) {
    }
    expectUnchanged();
  }

  @CollectionFeature.Require({SUPPORTS_ADD, FAILS_FAST_ON_CONCURRENT_MODIFICATION})
  @CollectionSize.Require(absent = ZERO)
  public void testAddAllConcurrentWithIteration() {

      try {
        testInstance.clear();
        fail();
      } catch (UnsupportedOperationException e) {
        // success
      }
    }
  }

  public final void testPut() {
    for (Table<Character, Integer, String> testInstance : getTestInstances()) {
      try {
        testInstance.put('a', 1, "blah");
        fail();
      } catch (UnsupportedOperationException e) {
        // success

    try {
      getList().addAll(0, null);
      fail("addAll(n, null) should throw");
    } catch (NullPointerException expected) {
    }
    expectUnchanged();
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
  public void testAddAllAtIndex_negative() {
    try {
      getList().addAll(-1, MinimalCollection.of(e3()));
      fail("addAll(-1, e) should throw");

    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    assertSize(3);
    try {
      table.put(null, 2, cellValue('d'));
      fail();
    } catch (NullPointerException expected) {
    }
    try {
      table.put("cat", null, cellValue('d'));
      fail();
    } catch (NullPointerException expected) {
    }
    if (supportsNullValues()) {
      assertNull(table.put("cat", 2, null));

    try {
      getMultiset().remove(e0(), -1);
      fail("Expected IllegalArgumentException");
    } catch (IllegalArgumentException expected) {
    }
    expectUnchanged();
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  public void testRemoveUnsupported() {
    try {
      getMultiset().remove(e0(), 2);
      fail("Expected UnsupportedOperationException");

    try {
      getDone(immediateFailedFuture(failureCause));
      fail();
    } catch (ExecutionException expected) {
      assertThat(expected).hasCauseThat().isEqualTo(failureCause);
    }
  }

  public void testCancelled() throws ExecutionException {
    try {
      getDone(immediateCancelledFuture());
      fail();
    } catch (CancellationException expected) {
    }
  }

  public void testRemove() {
    Iterator<String> iterator = create();

    assertTrue(iterator.hasNext());
    assertEquals("a", iterator.next());
    try {
      iterator.remove();
      fail();
    } catch (UnsupportedOperationException expected) {
    }
  }

  @SuppressWarnings("DoNotCall")
  public void testAdd() {
    ListIterator<String> iterator = create();

    assertTrue(iterator.hasNext());

              });
      fail("Expected NullPointerException or UnsupportedOperationException");
    } catch (NullPointerException | UnsupportedOperationException expected) {
    }
  }

  public void testMergeNullFunction() {
    try {
      getMap().merge(k0(), v3(), null);
      fail("Expected NullPointerException or UnsupportedOperationException");

    try {
      Ascii.truncate("foobar", 2, "...");
      fail();
    } catch (IllegalArgumentException expected) {
    }

    try {
      Ascii.truncate("foobar", 8, "1234567890");
      fail();
    } catch (IllegalArgumentException expected) {
    }

    try {
      Ascii.truncate("foobar", -1, "...");
      fail();
    } catch (IllegalArgumentException expected) {
    }

    try {