{
StringVertex A=new StringVertex("A"), B=new StringVertex("B");
LabelVertexPair sameA=constructLabelVertexPair("a",A), sameB=constructLabelVertexPair("a",A),
differentPairA=constructLabelVertexPair("a",B),differentPairB=constructLabelVertexPair("c",A);
equalityTestingHelper(sameA, sameB, differentPairA, differentPairB,true);
Assert.assertEquals(0,sameA.compareTo(sameB));
Assert.assertEquals(0,sameB.compareTo(sameA));
}
@Test
public final void testComparisonOfStringVertexPairs()