1 /* 2 * Copyright (C) 2008 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.collect.testing.features; 18 19 import com.google.common.annotations.GwtCompatible; 20 import com.google.common.collect.testing.Helpers; 21 22 import java.util.Collections; 23 import java.util.Set; 24 25 /** 26 * Encapsulates the constraints that a class under test must satisfy in order 27 * for a tester method to be run against that class. 28 * 29 * @author George van den Driessche 30 */ 31 @GwtCompatible 32 public final class TesterRequirements { 33 private final Set<Feature<?>> presentFeatures; 34 private final Set<Feature<?>> absentFeatures; 35 TesterRequirements( Set<Feature<?>> presentFeatures, Set<Feature<?>> absentFeatures)36 public TesterRequirements( 37 Set<Feature<?>> presentFeatures, Set<Feature<?>> absentFeatures) { 38 this.presentFeatures = Helpers.copyToSet(presentFeatures); 39 this.absentFeatures = Helpers.copyToSet(absentFeatures); 40 } 41 TesterRequirements(TesterRequirements tr)42 public TesterRequirements(TesterRequirements tr) { 43 this(tr.getPresentFeatures(), tr.getAbsentFeatures()); 44 } 45 TesterRequirements()46 public TesterRequirements() { 47 this(Collections.<Feature<?>>emptySet(), 48 Collections.<Feature<?>>emptySet()); 49 } 50 getPresentFeatures()51 public final Set<Feature<?>> getPresentFeatures() { 52 return presentFeatures; 53 } 54 getAbsentFeatures()55 public final Set<Feature<?>> getAbsentFeatures() { 56 return absentFeatures; 57 } 58 equals(Object object)59 @Override public boolean equals(Object object) { 60 if (object == this) { 61 return true; 62 } 63 if (object instanceof TesterRequirements) { 64 TesterRequirements that = (TesterRequirements) object; 65 return this.presentFeatures.equals(that.presentFeatures) 66 && this.absentFeatures.equals(that.absentFeatures); 67 } 68 return false; 69 } 70 hashCode()71 @Override public int hashCode() { 72 return presentFeatures.hashCode() * 31 + absentFeatures.hashCode(); 73 } 74 toString()75 @Override public String toString() { 76 return "{TesterRequirements: present=" 77 + presentFeatures + ", absent=" + absentFeatures + "}"; 78 } 79 80 private static final long serialVersionUID = 0; 81 } 82