public void AsDirected_ThenDirectedGraph()
{
// given
Vertex <int> vertex = testObject[5];
string vertexProperty = "123456";
string edgeProperty = "zxcvb";
Edge <int> edge = testObject.AddEdgeBetween(testObject[1], testObject[5]);
testObject.AddEdgeBetween(testObject[7], testObject[7]);
testObject.AddEdgeBetween(testObject[2], testObject[4]);
testObject.AddEdgeBetween(testObject[8], testObject[0]);
testObject.AddEdgeBetween(testObject[6], testObject[3]);
testObject.AddEdgeBetween(testObject[9], testObject[3]);
testObject.Properties[vertex] = vertexProperty;
testObject.Properties[edge] = edgeProperty;
// when
IDirectedGraph <int, string, string> result = testObject.AsDirected();
// then
result.Vertices.Should().BeEquivalentTo(testObject.Vertices);
result.Edges.Should().BeEquivalentTo(
new[] {
new Edge <int>(new Vertex <int>(0), new Vertex <int>(8)),
new Edge <int>(new Vertex <int>(1), new Vertex <int>(5)),
new Edge <int>(new Vertex <int>(2), new Vertex <int>(4)),
new Edge <int>(new Vertex <int>(3), new Vertex <int>(6)),
new Edge <int>(new Vertex <int>(3), new Vertex <int>(9)),
new Edge <int>(new Vertex <int>(4), new Vertex <int>(2)),
new Edge <int>(new Vertex <int>(5), new Vertex <int>(1)),
new Edge <int>(new Vertex <int>(6), new Vertex <int>(3)),
new Edge <int>(new Vertex <int>(7), new Vertex <int>(7)),
new Edge <int>(new Vertex <int>(8), new Vertex <int>(0)),
new Edge <int>(new Vertex <int>(9), new Vertex <int>(3))
});
result.Properties[vertex].Should().Be(vertexProperty);
result.Properties[result[9]].Should().BeNull();
result.Properties[result[1, 5]].Should().Be(edgeProperty);
result.Properties[result[5, 1]].Should().Be(edgeProperty);
result.Properties[result[8, 0]].Should().BeNull();
}
public IDirectedGraph <TVertexId, TVertexProperty, TEdgeProperty> AsDirected() => graph.AsDirected();