private void DoExtend(IEnumerable <Entity> existingEntities,
Entity entityToExtend,
Point selectionPoint,
bool expectExtend,
IEnumerable <Entity> expectedAdded)
{
expectedAdded = expectedAdded ?? new Entity[0];
// prepare the drawing
foreach (var ent in existingEntities)
{
Workspace.AddToCurrentLayer(ent);
}
var boundary = Workspace.Drawing.GetEntities().SelectMany(e => e.GetPrimitives());
Workspace.AddToCurrentLayer(entityToExtend);
// extend
IEnumerable <Entity> removed;
IEnumerable <Entity> added;
EditUtilities.Extend(
new SelectedEntity(entityToExtend, selectionPoint),
boundary,
out removed,
out added);
// verify deleted
Assert.Equal(expectExtend, removed.Any());
if (expectExtend)
{
Assert.Equal(1, removed.Count());
Assert.True(removed.Single().EquivalentTo(entityToExtend));
}
// verify added
Assert.Equal(expectedAdded.Count(), added.Count());
Assert.True(expectedAdded.Zip(added, (a, b) => a.EquivalentTo(b)).All(b => b));
}
protected override void DoTrimExtend(SelectedEntity selectedEntity, IEnumerable <Primitives.IPrimitive> boundaryPrimitives, out IEnumerable <Entity> removed, out IEnumerable <Entity> added)
{
EditUtilities.Extend(selectedEntity, boundaryPrimitives, out removed, out added);
}