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Java example source code file (ImmutableNetworkTest.java)

This example Java source code file (ImmutableNetworkTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

immutablenetworktest, mutablenetwork, network, string, test

The ImmutableNetworkTest.java Java example source code

/*
 * Copyright (C) 2014 The Guava Authors
 *
 * 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.common.graph;

import static com.google.common.truth.Truth.assertThat;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Tests for {@link ImmutableNetwork}.
 */
@RunWith(JUnit4.class)
public class ImmutableNetworkTest {

  @Test
  public void copyOfImmutableNetwork_optimized() {
    Network<String, String> graph1 = ImmutableNetwork.copyOf(
        NetworkBuilder.directed().<String, String>build());
    Network<String, String> graph2 = ImmutableNetwork.copyOf(graph1);

    assertThat(graph2).isSameAs(graph1);
  }

  @Test
  public void edgesConnecting_directed() {
    MutableNetwork<String, String> mutableGraph = NetworkBuilder.directed().build();
    mutableGraph.addEdge("AA", "A", "A");
    mutableGraph.addEdge("AB", "A", "B");
    Network<String, String> graph = ImmutableNetwork.copyOf(mutableGraph);

    assertThat(graph.edgesConnecting("A", "A")).containsExactly("AA");
    assertThat(graph.edgesConnecting("A", "B")).containsExactly("AB");
    assertThat(graph.edgesConnecting("B", "A")).isEmpty();
  }

  @Test
  public void edgesConnecting_undirected() {
    MutableNetwork<String, String> mutableGraph = NetworkBuilder.undirected().build();
    mutableGraph.addEdge("AA", "A", "A");
    mutableGraph.addEdge("AB", "A", "B");
    Network<String, String> graph = ImmutableNetwork.copyOf(mutableGraph);

    assertThat(graph.edgesConnecting("A", "A")).containsExactly("AA");
    assertThat(graph.edgesConnecting("A", "B")).containsExactly("AB");
    assertThat(graph.edgesConnecting("B", "A")).containsExactly("AB");
  }
}

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