| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.internal.util; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| |
| public class PredicatesTest extends TestCase { |
| |
| private static final Predicate<Object> TRUE = new Predicate<Object>() { |
| public boolean apply(Object o) { |
| return true; |
| } |
| }; |
| |
| private static final Predicate<Object> FALSE = new Predicate<Object>() { |
| public boolean apply(Object o) { |
| return false; |
| } |
| }; |
| |
| public void testAndPredicate_AllConditionsTrue() throws Exception { |
| assertTrue(Predicates.and(newArrayList(TRUE)).apply(null)); |
| assertTrue(Predicates.and(newArrayList(TRUE, TRUE)).apply(null)); |
| } |
| |
| public void testAndPredicate_AtLeastOneConditionIsFalse() throws Exception { |
| assertFalse(Predicates.and(newArrayList(FALSE, TRUE, TRUE)).apply(null)); |
| assertFalse(Predicates.and(newArrayList(TRUE, FALSE, TRUE)).apply(null)); |
| assertFalse(Predicates.and(newArrayList(TRUE, TRUE, FALSE)).apply(null)); |
| } |
| |
| public void testOrPredicate_AllConditionsTrue() throws Exception { |
| assertTrue(Predicates.or(newArrayList(TRUE, TRUE, TRUE)).apply(null)); |
| } |
| |
| public void testOrPredicate_AllConditionsFalse() throws Exception { |
| assertFalse(Predicates.or(newArrayList(FALSE, FALSE, FALSE)).apply(null)); |
| } |
| |
| public void testOrPredicate_AtLeastOneConditionIsTrue() throws Exception { |
| assertTrue(Predicates.or(newArrayList(TRUE, FALSE, FALSE)).apply(null)); |
| assertTrue(Predicates.or(newArrayList(FALSE, TRUE, FALSE)).apply(null)); |
| assertTrue(Predicates.or(newArrayList(FALSE, FALSE, TRUE)).apply(null)); |
| } |
| |
| public void testNotPredicate() throws Exception { |
| assertTrue(Predicates.not(FALSE).apply(null)); |
| assertFalse(Predicates.not(TRUE).apply(null)); |
| } |
| |
| private static <E> ArrayList<E> newArrayList(E... elements) { |
| ArrayList<E> list = new ArrayList<E>(); |
| Collections.addAll(list, elements); |
| return list; |
| } |
| |
| } |