TestCalculateGraphMetrics2()
{
// Undirected graph.
Boolean bIsDirected = false;
CreateGraph(bIsDirected);
IVertex oVertexA = m_oVertices.Add();
IVertex oVertexB = m_oVertices.Add();
m_oEdges.Add(oVertexA, oVertexB, bIsDirected);
MetricDouble oMetricDouble;
bool rv = m_oReciprocatedVertexPairRatioCalculator.TryCalculateGraphMetrics(m_oGraph, null, out oMetricDouble);
Assert.AreEqual(true, rv);
Assert.AreEqual(0, oMetricDouble.Count);
}