| // Copyright 2014 The Bazel Authors. All rights reserved. |
| // |
| // 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.google.devtools.build.lib.util; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Tests for {@link Pair}. |
| */ |
| @RunWith(JUnit4.class) |
| public class PairTest { |
| |
| @Test |
| public void constructor() { |
| Object a = new Object(); |
| Object b = new Object(); |
| Pair<Object, Object> p = Pair.of(a, b); |
| assertSame(a, p.first); |
| assertSame(b, p.second); |
| assertEquals(Pair.of(a, b), p); |
| assertEquals(31 * a.hashCode() + b.hashCode(), p.hashCode()); |
| } |
| |
| @Test |
| public void nullable() { |
| Pair<Object, Object> p = Pair.of(null, null); |
| assertNull(p.first); |
| assertNull(p.second); |
| p.hashCode(); // Should not throw. |
| assertEquals(p, p); |
| } |
| } |