public void ON_GetEdgesToVertexAt_WHEN_Vertex_Exists_SHOULD_Return_Defined_Edges()
{
// Arrange
var uut = new UnitUnderTest <int>(index => _vertexMocks[index].Object, () => _vertexMocks.Length);
var dest = 1;
var expectedEdgeData =
_adjacency.SelectMany((a, srcIdx) => a.Where(idx => idx == dest).Select(dstIdx => GetEdgeValue(srcIdx, dstIdx))).ToArray();
// Act
var edges = uut.GetEdgesToVertexAt(dest).ToArray();
// Assert
Assert.IsTrue(edges.All(e => e.Destination == dest));
Assert.IsTrue(edges.All(e => _adjacency[e.Source].Contains(e.Destination)));
CollectionAssert.AreEquivalent(expectedEdgeData, edges.Select(e => e.Data).ToArray());
}