001/*
002 * Copyright (C) 2008 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.collect.testing.features;
018
019import com.google.common.annotations.GwtCompatible;
020import java.util.Set;
021
022/**
023 * Base class for enumerating the features of an interface to be tested.
024 *
025 * @param <T> The interface whose features are to be enumerated.
026 * @author George van den Driessche
027 */
028@GwtCompatible
029public interface Feature<T> {
030  /** Returns the set of features that are implied by this feature. */
031  Set<Feature<? super T>> getImpliedFeatures();
032}