public void BeginChange_Should_Throw_WhenChangeSetInProgress()
{
var graph = new GraphModel(Substitute.For <IGraphType>());
var changeSet = graph.BeginChangeSet();
Assert.That(() => graph.BeginChangeSet(), Throws.InvalidOperationException);
}
public void RemoveNode_Should_Batch_WithAddNode()
{
var graph = new GraphModel(Substitute.For <IGraphType>());
var node1 = new NodeModel(Substitute.For <INodeType>());
var node2 = new NodeModel(Substitute.For <INodeType>());
graph.AddNode(node1);
graph.AddNode(node2);
IReadOnlyList <NodeModel> removedNodes = null;
graph.GraphChanged += (an, rn, ac, rc) => { removedNodes = rn; };
using (graph.BeginChangeSet())
{
graph.RemoveNode(node1);
graph.RemoveNode(node2);
graph.AddNode(node1);
Assert.That(removedNodes, Is.Null);
}
Assert.That(removedNodes, Is.Not.Null);
Assert.That(removedNodes, Is.EquivalentTo(new[] { node2 }));
}
public void Disconnect_Should_Batch_WithConnect()
{
var graph = new GraphModel(Substitute.For <IGraphType>());
var node1 = new NodeModel(Substitute.For <INodeType>());
var node2 = new NodeModel(Substitute.For <INodeType>());
var port1 = PortModel.Create <string>("Out1", PortDirection.Output);
var port2 = PortModel.Create <string>("Out2", PortDirection.Output);
var port3 = PortModel.Create <string>("In1", PortDirection.Input);
var port4 = PortModel.Create <string>("In2", PortDirection.Input);
node1.AddPort(port1);
node1.AddPort(port2);
node2.AddPort(port3);
node2.AddPort(port4);
graph.AddNode(node1);
graph.AddNode(node2);
var connection1 = graph.Connect(port1, port3);
var connection2 = graph.Connect(port2, port4);
IReadOnlyList <ConnectionModel> removedConnections = null;
graph.GraphChanged += (an, rn, ac, rc) => { removedConnections = rc; };
using (graph.BeginChangeSet())
{
graph.Disconnect(connection1);
graph.Disconnect(connection2);
var connection3 = graph.Connect(port1, port3);
Assert.That(removedConnections, Is.Null);
Assert.That(connection3, Is.SameAs(connection1));
}
Assert.That(removedConnections, Is.Not.Null);
Assert.That(removedConnections, Is.EquivalentTo(new[] { connection2 }));
}