Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
tom | 144de69 | 2014-08-29 11:38:44 -0700 | [diff] [blame] | 19 | package org.onlab.graph; |
| 20 | |
tom | 144de69 | 2014-08-29 11:38:44 -0700 | [diff] [blame] | 21 | import com.google.common.testing.EqualsTester; |
| 22 | import org.junit.Test; |
| 23 | |
tom | 144de69 | 2014-08-29 11:38:44 -0700 | [diff] [blame] | 24 | import static com.google.common.collect.ImmutableList.of; |
| 25 | import static org.junit.Assert.assertEquals; |
| 26 | import static org.junit.Assert.assertNull; |
| 27 | |
| 28 | /** |
| 29 | * Test of the default mutable path. |
| 30 | */ |
| 31 | public class DefaultMutablePathTest extends DefaultPathTest { |
| 32 | |
| 33 | @Test |
| 34 | public void equality() { |
| 35 | DefaultPath<TestVertex, TestEdge> p1 = |
| 36 | new DefaultPath<>(of(new TestEdge(A, B, 1), |
| 37 | new TestEdge(B, C, 1)), 2.0); |
| 38 | DefaultPath<TestVertex, TestEdge> p2 = |
| 39 | new DefaultPath<>(of(new TestEdge(A, B, 1), |
| 40 | new TestEdge(B, D, 1)), 2.0); |
| 41 | new EqualsTester().addEqualityGroup(new DefaultMutablePath<>(p1), |
| 42 | new DefaultMutablePath<>(p1)) |
| 43 | .addEqualityGroup(new DefaultMutablePath<>(p2)) |
| 44 | .testEquals(); |
| 45 | } |
| 46 | |
| 47 | @Test |
| 48 | public void empty() { |
| 49 | MutablePath<TestVertex, TestEdge> p = new DefaultMutablePath<>(); |
| 50 | assertNull("src should be null", p.src()); |
| 51 | assertNull("dst should be null", p.dst()); |
| 52 | assertEquals("incorrect edge count", 0, p.edges().size()); |
| 53 | assertEquals("incorrect path cost", 0.0, p.cost(), 0.1); |
| 54 | } |
| 55 | |
| 56 | @Test |
| 57 | public void pathCost() { |
| 58 | MutablePath<TestVertex, TestEdge> p = new DefaultMutablePath<>(); |
| 59 | p.setCost(4); |
| 60 | assertEquals("incorrect path cost", 4.0, p.cost(), 0.1); |
| 61 | } |
| 62 | |
| 63 | private void validatePath(Path<TestVertex, TestEdge> p, |
| 64 | TestVertex src, TestVertex dst, int length) { |
| 65 | validatePath(p, src, dst, length, 0.0); |
| 66 | } |
| 67 | |
| 68 | @Test |
| 69 | public void insertEdge() { |
| 70 | MutablePath<TestVertex, TestEdge> p = new DefaultMutablePath<>(); |
| 71 | p.insertEdge(new TestEdge(B, C, 1)); |
| 72 | p.insertEdge(new TestEdge(A, B, 1)); |
| 73 | validatePath(p, A, C, 2); |
| 74 | } |
| 75 | |
| 76 | @Test |
| 77 | public void appendEdge() { |
| 78 | MutablePath<TestVertex, TestEdge> p = new DefaultMutablePath<>(); |
| 79 | p.appendEdge(new TestEdge(A, B, 1)); |
| 80 | p.appendEdge(new TestEdge(B, C, 1)); |
| 81 | validatePath(p, A, C, 2); |
| 82 | } |
| 83 | |
| 84 | @Test |
| 85 | public void removeEdge() { |
| 86 | MutablePath<TestVertex, TestEdge> p = new DefaultMutablePath<>(); |
| 87 | p.appendEdge(new TestEdge(A, B, 1)); |
| 88 | p.appendEdge(new TestEdge(B, C, 1)); |
| 89 | p.appendEdge(new TestEdge(C, C, 2)); |
| 90 | p.appendEdge(new TestEdge(C, D, 1)); |
| 91 | validatePath(p, A, D, 4); |
| 92 | |
| 93 | p.removeEdge(new TestEdge(A, B, 1)); |
| 94 | validatePath(p, B, D, 3); |
| 95 | |
| 96 | p.removeEdge(new TestEdge(C, C, 2)); |
| 97 | validatePath(p, B, D, 2); |
| 98 | |
| 99 | p.removeEdge(new TestEdge(C, D, 1)); |
| 100 | validatePath(p, B, C, 1); |
| 101 | } |
| 102 | |
| 103 | @Test |
| 104 | public void toImmutable() { |
| 105 | MutablePath<TestVertex, TestEdge> p = new DefaultMutablePath<>(); |
| 106 | p.appendEdge(new TestEdge(A, B, 1)); |
| 107 | p.appendEdge(new TestEdge(B, C, 1)); |
| 108 | validatePath(p, A, C, 2); |
| 109 | |
| 110 | assertEquals("immutables should equal", p.toImmutable(), p.toImmutable()); |
| 111 | validatePath(p.toImmutable(), A, C, 2); |
| 112 | } |
| 113 | } |