public void TarjanOfflineLeastCommonAncestor_Throws()
{
var vertex1 = new TestVertex("1");
var vertex2 = new TestVertex("2");
var vertex3 = new TestVertex("3");
var pairs = new[] { new SEquatableEdge <TestVertex>(vertex1, vertex2) };
var graph = new AdjacencyGraph <TestVertex, Edge <TestVertex> >();
graph.AddVertexRange(new[] { vertex1, vertex2 });
var algorithm = new TarjanOfflineLeastCommonAncestorAlgorithm <TestVertex, Edge <TestVertex> >(graph);
// ReSharper disable AssignNullToNotNullAttribute
Assert.Throws <ArgumentNullException>(() => algorithm.Compute(null, pairs));
Assert.Throws <ArgumentNullException>(() => algorithm.Compute(vertex1, null));
Assert.Throws <ArgumentNullException>(() => algorithm.Compute(null, null));
Assert.Throws <ArgumentException>(() => algorithm.Compute(vertex3, pairs));
// ReSharper restore AssignNullToNotNullAttribute
algorithm = new TarjanOfflineLeastCommonAncestorAlgorithm <TestVertex, Edge <TestVertex> >(graph);
algorithm.SetRootVertex(vertex1);
Assert.Throws <InvalidOperationException>(() => algorithm.Compute());
}
