protected static void SetTargetVertex_Test <TGraph>(
[NotNull] RootedSearchAlgorithmBase <int, TGraph> algorithm)
where TGraph : IImplicitVertexSet <int>
{
int targetVertexChangeCount = 0;
algorithm.TargetVertexChanged += (sender, args) => ++ targetVertexChangeCount;
const int vertex1 = 0;
algorithm.SetTargetVertex(vertex1);
Assert.AreEqual(1, targetVertexChangeCount);
algorithm.TryGetTargetVertex(out int target);
Assert.AreEqual(vertex1, target);
// Not changed
algorithm.SetTargetVertex(vertex1);
Assert.AreEqual(1, targetVertexChangeCount);
algorithm.TryGetTargetVertex(out target);
Assert.AreEqual(vertex1, target);
const int vertex2 = 1;
algorithm.SetTargetVertex(vertex2);
Assert.AreEqual(2, targetVertexChangeCount);
algorithm.TryGetTargetVertex(out target);
Assert.AreEqual(vertex2, target);
algorithm.SetTargetVertex(vertex1);
Assert.AreEqual(3, targetVertexChangeCount);
algorithm.TryGetTargetVertex(out target);
Assert.AreEqual(vertex1, target);
}
protected static void TryGetTargetVertex_Test <TVertex, TGraph>(
[NotNull] RootedSearchAlgorithmBase <TVertex, TGraph> algorithm)
where TVertex : new()
where TGraph : IImplicitVertexSet <TVertex>
{
Assert.IsFalse(algorithm.TryGetTargetVertex(out _));
var vertex = new TVertex();
algorithm.SetTargetVertex(vertex);
Assert.IsTrue(algorithm.TryGetTargetVertex(out TVertex target));
AssertEqual(vertex, target);
}