public void AddVertex_WhenNewVertexId_ThenCreatedVertex()
{
// given
int newVertexId = 13;
string property = "qwerty";
// when
Vertex <int> result = testObject.AddVertex(newVertexId, property);
// then
result.Id.Should().Be(newVertexId);
testObject.VerticesCount.Should().Be(11);
testObject.GetNeighbours(result).Should().BeEmpty();
testObject.Properties[result].Should().Be(property);
}
/// <summary>Adds new vertex with given property to given group in this graph.</summary>
/// <param name="groupNumber">Group number</param>
/// <param name="vertex">New vertex</param>
/// <param name="property">Vertex property</param>
/// <returns>New vertex</returns>
/// <exception cref="ArgumentException">If vertex already exists</exception>
public Vertex <TVertexId> AddVertex(int groupNumber, Vertex <TVertexId> vertex,
TVertexProperty property = default)
{
validateGroup(groupNumber);
Vertex <TVertexId> newVertex = graph.AddVertex(vertex, property);
vertexGroupDict[newVertex] = groupNumber;
return(newVertex);
}