package org.onlab.graph;

import static org.junit.Assert.*;

import org.junit.Test;

import com.google.common.collect.ImmutableList;
import com.google.common.testing.EqualsTester;

/**
 * Test of DisjointPathPair.
 */
public class DisjointPathPairTest {

    private static final TestVertex A = new TestVertex("A");
    private static final TestVertex B = new TestVertex("B");
    private static final TestVertex C = new TestVertex("C");
    private static final TestVertex D = new TestVertex("D");

    private static final TestEdge AB = new TestEdge(A, B, 1.0);
    private static final TestEdge BC = new TestEdge(B, C, 1.0);
    private static final TestEdge AD = new TestEdge(A, D, 1.0);
    private static final TestEdge DC = new TestEdge(D, C, 1.0);

    private static final Path<TestVertex, TestEdge> ABC
                            = new DefaultPath<>(ImmutableList.of(AB, BC), 1.0);
    private static final Path<TestVertex, TestEdge> ADC
                            = new DefaultPath<>(ImmutableList.of(AD, DC), 1.0);

    @Test
    public void testSwappingPrimarySecondaryDoesntImpactHashCode() {
        assertEquals(new DisjointPathPair<>(ABC, ADC).hashCode(),
                     new DisjointPathPair<>(ADC, ABC).hashCode());
    }

    @Test
    public void testSwappingPrimarySecondaryDoesntImpactEquality() {
        new EqualsTester()
            .addEqualityGroup(new DisjointPathPair<>(ABC, ADC),
                              new DisjointPathPair<>(ADC, ABC));
    }

}