public void InvalidParameters() { var parameters = new FreeFRLayoutParameters(); Assert.Throws <ArgumentOutOfRangeException>(() => parameters.VertexCount = -1); Assert.Throws <ArgumentOutOfRangeException>(() => parameters.MaxIterations = -1); Assert.Throws <ArgumentOutOfRangeException>(() => parameters.IdealEdgeLength = -1); }
public void Constructor_Throws() { var verticesPositions = new Dictionary <string, Point>(); var parameters = new FreeFRLayoutParameters(); // ReSharper disable ObjectCreationAsStatement // ReSharper disable AssignNullToNotNullAttribute Assert.Throws <ArgumentNullException>( () => new FRLayoutAlgorithm <string, Edge <string>, IBidirectionalGraph <string, Edge <string> > >(null, parameters)); Assert.Throws <ArgumentNullException>( () => new FRLayoutAlgorithm <string, Edge <string>, IBidirectionalGraph <string, Edge <string> > >(null, verticesPositions, parameters)); // ReSharper restore AssignNullToNotNullAttribute // ReSharper restore ObjectCreationAsStatement }
/// <summary> /// Performs the actual layout algorithm. /// </summary> /// <param name="graph">The object containing the graph data</param> /// <param name="rootNode">Root node</param> protected override void PerformLayout(GraphMapData graph, INode rootNode) { AdjacencyGraph <string, Edge <string> > adjacencyGraph = GraphSharpUtility.GetAdjacencyGraph(graph); IDictionary <string, Vector> nodePositions = GraphSharpUtility.GetNodePositions(graph); FreeFRLayoutParameters freeFRLayoutParameters = new FreeFRLayoutParameters() { IdealEdgeLength = 125D }; FRLayoutAlgorithm <string, Edge <string>, AdjacencyGraph <string, Edge <string> > > frLayoutAlgorithm = new FRLayoutAlgorithm <string, Edge <string>, AdjacencyGraph <string, Edge <string> > >(adjacencyGraph, nodePositions, freeFRLayoutParameters); frLayoutAlgorithm.Compute(); GraphSharpUtility.SetNodePositions(graph, frLayoutAlgorithm.VertexPositions); GraphSharpUtility.FSAOverlapRemoval(graph); }
public void Clone() { var parameters = new FreeFRLayoutParameters(); var clonedParameters = (FreeFRLayoutParameters)parameters.Clone(); Assert.AreEqual(parameters, clonedParameters); parameters = new FreeFRLayoutParameters(); parameters.VertexCount = 20; parameters.AttractionMultiplier = 1.5; parameters.RepulsiveMultiplier = 0.7; parameters.MaxIterations = 150; parameters.Lambda = 0.9; parameters.CoolingFunction = FRCoolingFunction.Linear; parameters.IdealEdgeLength = 15; clonedParameters = (FreeFRLayoutParameters)parameters.Clone(); Assert.AreEqual(parameters, clonedParameters); }
public void Evaluate(int SpreadMax) { if (FBuild[0] || (pd.InputChanged && init)) { graph.Clear(); VSize.Clear(); VThickness.Clear(); VType.Clear(); VPos.Clear(); VCache.Clear(); for (int i = 0; i < FVertices.SliceCount; i++) { graph.AddVertex(FVertices[i]); VSize.Add(FVertices[i], new Size(FVSize[i], FVSize[i])); VThickness.Add(FVertices[i], new Thickness(1.0)); VType.Add(FVertices[i], FVType[i]); VPos.Add(FVertices[i], new Point(FVPos[i].x, FVPos[i].y)); VCache.Add(FVertices[i]); } for (int i = 0; i < Math.Max(FEdgeFrom.SliceCount, FEdgeTo.SliceCount); i++) { graph.AddEdge(new Edge <string>(FEdgeFrom[i], FEdgeTo[i])); } var cparams = new FreeFRLayoutParameters(); foreach (var prop in typeof(FreeFRLayoutParameters).GetProperties()) { var input = pd.InputPins[prop.Name].Spread[0]; if (!(input.ToString().StartsWith("0") && input.ToString().EndsWith("0"))) { prop.SetValue(cparams, pd.InputPins[prop.Name].Spread[0]); } } layout = new FRLayoutAlgorithm <string, IEdge <string>, BidirectionalGraph <string, IEdge <string> > >(graph, VPos, cparams); foreach (var prop in typeof(FreeFRLayoutParameters).GetProperties()) { var input = pd.InputPins[prop.Name].Spread[0]; if (!(input.ToString().StartsWith("0") && input.ToString().EndsWith("0"))) { prop.SetValue(layout.Parameters, pd.InputPins[prop.Name].Spread[0]); } } layout.Finished += (sender, args) => { FPosOut.SliceCount = VCache.Count; for (int i = 0; i < VCache.Count; i++) { var point = layout.VertexPositions[VCache[i]]; FPosOut[i] = new Vector2D(point.X, point.Y); } }; if (FAsync[0]) { Task.Run(() => { layout.Compute(); }); } else { layout.Compute(); } init = true; } if (layout != null) { FState[0] = layout.State.ToString(); } }
public void StandardFactory() { var positions = new Dictionary <TestVertex, Point>(); var sizes = new Dictionary <TestVertex, Size>(); var borders = new Dictionary <TestVertex, Thickness>(); var layoutTypes = new Dictionary <TestVertex, CompoundVertexInnerLayoutType>(); var graph = new BidirectionalGraph <TestVertex, Edge <TestVertex> >(); var simpleContext = new LayoutContext <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >( graph, positions, sizes, LayoutMode.Simple); var compoundContext1 = new LayoutContext <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >( graph, positions, sizes, LayoutMode.Compound); var compoundContext2 = new CompoundLayoutContext <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >( graph, positions, sizes, LayoutMode.Compound, borders, layoutTypes); var nullGraphContext = new LayoutContext <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >( null, positions, sizes, LayoutMode.Simple); var factory = new StandardLayoutAlgorithmFactory <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(); CollectionAssert.AreEqual( new[] { "Circular", "Tree", "FR", "BoundedFR", "KK", "ISOM", "LinLog", "Sugiyama", "CompoundFDP", "Random" }, factory.AlgorithmTypes); Assert.IsNull( factory.CreateAlgorithm( string.Empty, simpleContext, new CircularLayoutParameters())); Assert.IsNull( factory.CreateAlgorithm( "NotExist", simpleContext, new CircularLayoutParameters())); Assert.IsNull( factory.CreateAlgorithm( "Circular", nullGraphContext, new CircularLayoutParameters())); Assert.IsInstanceOf <CircularLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "Circular", simpleContext, new CircularLayoutParameters())); Assert.IsInstanceOf <SimpleTreeLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "Tree", simpleContext, new SimpleTreeLayoutParameters())); Assert.IsInstanceOf <FRLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "FR", simpleContext, new FreeFRLayoutParameters())); Assert.IsInstanceOf <FRLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "BoundedFR", simpleContext, new BoundedFRLayoutParameters())); Assert.IsInstanceOf <KKLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "KK", simpleContext, new KKLayoutParameters())); Assert.IsInstanceOf <ISOMLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "ISOM", simpleContext, new ISOMLayoutParameters())); Assert.IsInstanceOf <LinLogLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "LinLog", simpleContext, new LinLogLayoutParameters())); Assert.IsInstanceOf <SugiyamaLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "Sugiyama", simpleContext, new SugiyamaLayoutParameters())); Assert.IsInstanceOf <CompoundFDPLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "CompoundFDP", simpleContext, new CompoundFDPLayoutParameters())); Assert.IsInstanceOf <RandomLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "Random", simpleContext, new RandomLayoutParameters())); Assert.IsNull( factory.CreateAlgorithm( "CompoundFDP", compoundContext1, new CompoundFDPLayoutParameters())); Assert.IsNull( factory.CreateAlgorithm( "Circular", compoundContext2, new CompoundFDPLayoutParameters())); Assert.IsInstanceOf <CompoundFDPLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > > >( factory.CreateAlgorithm( "CompoundFDP", compoundContext2, new CompoundFDPLayoutParameters())); var testParameters = new TestLayoutParameters(); var circularParameters = new CircularLayoutParameters(); ILayoutParameters createdParameters = factory.CreateParameters(string.Empty, circularParameters); Assert.IsNull(createdParameters); createdParameters = factory.CreateParameters("NotExist", circularParameters); Assert.IsNull(createdParameters); createdParameters = factory.CreateParameters("Circular", null); Assert.IsInstanceOf <CircularLayoutParameters>(createdParameters); Assert.AreNotSame(circularParameters, createdParameters); createdParameters = factory.CreateParameters("Circular", testParameters); Assert.IsInstanceOf <CircularLayoutParameters>(createdParameters); Assert.AreNotSame(testParameters, createdParameters); createdParameters = factory.CreateParameters("Circular", circularParameters); Assert.IsInstanceOf <CircularLayoutParameters>(createdParameters); Assert.AreNotSame(circularParameters, createdParameters); var treeParameters = new SimpleTreeLayoutParameters(); createdParameters = factory.CreateParameters("Tree", null); Assert.IsInstanceOf <SimpleTreeLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("Tree", testParameters); Assert.IsInstanceOf <SimpleTreeLayoutParameters>(createdParameters); Assert.AreNotSame(testParameters, createdParameters); createdParameters = factory.CreateParameters("Tree", treeParameters); Assert.IsInstanceOf <SimpleTreeLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); var frParameters = new FreeFRLayoutParameters(); createdParameters = factory.CreateParameters("FR", null); Assert.IsInstanceOf <FreeFRLayoutParameters>(createdParameters); Assert.AreNotSame(frParameters, createdParameters); createdParameters = factory.CreateParameters("FR", testParameters); Assert.IsInstanceOf <FreeFRLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("FR", frParameters); Assert.IsInstanceOf <FreeFRLayoutParameters>(createdParameters); Assert.AreNotSame(frParameters, createdParameters); var boundedFrParameters = new BoundedFRLayoutParameters(); createdParameters = factory.CreateParameters("BoundedFR", null); Assert.IsInstanceOf <BoundedFRLayoutParameters>(createdParameters); Assert.AreNotSame(boundedFrParameters, createdParameters); createdParameters = factory.CreateParameters("BoundedFR", testParameters); Assert.IsInstanceOf <BoundedFRLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("BoundedFR", boundedFrParameters); Assert.IsInstanceOf <BoundedFRLayoutParameters>(createdParameters); Assert.AreNotSame(boundedFrParameters, createdParameters); var kkParameters = new KKLayoutParameters(); createdParameters = factory.CreateParameters("KK", null); Assert.IsInstanceOf <KKLayoutParameters>(createdParameters); Assert.AreNotSame(kkParameters, createdParameters); createdParameters = factory.CreateParameters("KK", testParameters); Assert.IsInstanceOf <KKLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("KK", kkParameters); Assert.IsInstanceOf <KKLayoutParameters>(createdParameters); Assert.AreNotSame(kkParameters, createdParameters); var isomParameters = new ISOMLayoutParameters(); createdParameters = factory.CreateParameters("ISOM", null); Assert.IsInstanceOf <ISOMLayoutParameters>(createdParameters); Assert.AreNotSame(isomParameters, createdParameters); createdParameters = factory.CreateParameters("ISOM", testParameters); Assert.IsInstanceOf <ISOMLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("ISOM", isomParameters); Assert.IsInstanceOf <ISOMLayoutParameters>(createdParameters); Assert.AreNotSame(isomParameters, createdParameters); var linLogParameters = new LinLogLayoutParameters(); createdParameters = factory.CreateParameters("LinLog", null); Assert.IsInstanceOf <LinLogLayoutParameters>(createdParameters); Assert.AreNotSame(linLogParameters, createdParameters); createdParameters = factory.CreateParameters("LinLog", testParameters); Assert.IsInstanceOf <LinLogLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("LinLog", linLogParameters); Assert.IsInstanceOf <LinLogLayoutParameters>(createdParameters); Assert.AreNotSame(linLogParameters, createdParameters); var sugiyamaParameters = new SugiyamaLayoutParameters(); createdParameters = factory.CreateParameters("Sugiyama", null); Assert.IsInstanceOf <SugiyamaLayoutParameters>(createdParameters); Assert.AreNotSame(sugiyamaParameters, createdParameters); createdParameters = factory.CreateParameters("Sugiyama", testParameters); Assert.IsInstanceOf <SugiyamaLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("Sugiyama", sugiyamaParameters); Assert.IsInstanceOf <SugiyamaLayoutParameters>(createdParameters); Assert.AreNotSame(sugiyamaParameters, createdParameters); var compoundFDPParameters = new CompoundFDPLayoutParameters(); createdParameters = factory.CreateParameters("CompoundFDP", null); Assert.IsInstanceOf <CompoundFDPLayoutParameters>(createdParameters); Assert.AreNotSame(compoundFDPParameters, createdParameters); createdParameters = factory.CreateParameters("CompoundFDP", testParameters); Assert.IsInstanceOf <CompoundFDPLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("CompoundFDP", compoundFDPParameters); Assert.IsInstanceOf <CompoundFDPLayoutParameters>(createdParameters); Assert.AreNotSame(compoundFDPParameters, createdParameters); var randomParameters = new RandomLayoutParameters(); createdParameters = factory.CreateParameters("Random", null); Assert.IsInstanceOf <RandomLayoutParameters>(createdParameters); Assert.AreNotSame(randomParameters, createdParameters); createdParameters = factory.CreateParameters("Random", testParameters); Assert.IsInstanceOf <RandomLayoutParameters>(createdParameters); Assert.AreNotSame(treeParameters, createdParameters); createdParameters = factory.CreateParameters("Random", randomParameters); Assert.IsInstanceOf <RandomLayoutParameters>(createdParameters); Assert.AreNotSame(randomParameters, createdParameters); Assert.IsFalse(factory.IsValidAlgorithm(null)); Assert.IsFalse(factory.IsValidAlgorithm(string.Empty)); Assert.IsTrue(factory.IsValidAlgorithm("Circular")); Assert.IsFalse(factory.IsValidAlgorithm("circular")); Assert.IsTrue(factory.IsValidAlgorithm("Tree")); Assert.IsTrue(factory.IsValidAlgorithm("FR")); Assert.IsTrue(factory.IsValidAlgorithm("BoundedFR")); Assert.IsTrue(factory.IsValidAlgorithm("KK")); Assert.IsTrue(factory.IsValidAlgorithm("ISOM")); Assert.IsTrue(factory.IsValidAlgorithm("LinLog")); Assert.IsTrue(factory.IsValidAlgorithm("Sugiyama")); Assert.IsTrue(factory.IsValidAlgorithm("CompoundFDP")); Assert.IsTrue(factory.IsValidAlgorithm("Random")); var algorithm1 = new TestLayoutAlgorithm(); Assert.IsEmpty(factory.GetAlgorithmType(algorithm1)); var algorithm2 = new CircularLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, positions, sizes, circularParameters); Assert.AreEqual("Circular", factory.GetAlgorithmType(algorithm2)); var algorithm3 = new SimpleTreeLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, positions, sizes, treeParameters); Assert.AreEqual("Tree", factory.GetAlgorithmType(algorithm3)); var algorithm4 = new FRLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, positions, frParameters); Assert.AreEqual("FR", factory.GetAlgorithmType(algorithm4)); var algorithm5 = new FRLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, positions, boundedFrParameters); Assert.AreEqual("BoundedFR", factory.GetAlgorithmType(algorithm5)); var algorithm6 = new KKLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, positions, kkParameters); Assert.AreEqual("KK", factory.GetAlgorithmType(algorithm6)); var algorithm7 = new ISOMLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, positions, isomParameters); Assert.AreEqual("ISOM", factory.GetAlgorithmType(algorithm7)); var algorithm8 = new LinLogLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph); Assert.AreEqual("LinLog", factory.GetAlgorithmType(algorithm8)); var algorithm9 = new SugiyamaLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, positions, sizes, sugiyamaParameters); Assert.AreEqual("Sugiyama", factory.GetAlgorithmType(algorithm9)); var algorithm10 = new CompoundFDPLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, sizes, borders, layoutTypes); Assert.AreEqual("CompoundFDP", factory.GetAlgorithmType(algorithm10)); var algorithm11 = new RandomLayoutAlgorithm <TestVertex, Edge <TestVertex>, BidirectionalGraph <TestVertex, Edge <TestVertex> > >(graph, sizes, null, randomParameters); Assert.AreEqual("Random", factory.GetAlgorithmType(algorithm11)); Assert.IsFalse(factory.NeedEdgeRouting(string.Empty)); Assert.IsTrue(factory.NeedEdgeRouting("Circular")); Assert.IsTrue(factory.NeedEdgeRouting("Tree")); Assert.IsTrue(factory.NeedEdgeRouting("FR")); Assert.IsTrue(factory.NeedEdgeRouting("BoundedFR")); Assert.IsTrue(factory.NeedEdgeRouting("KK")); Assert.IsTrue(factory.NeedEdgeRouting("ISOM")); Assert.IsTrue(factory.NeedEdgeRouting("LinLog")); Assert.IsFalse(factory.NeedEdgeRouting("Sugiyama")); Assert.IsTrue(factory.NeedEdgeRouting("CompoundFDP")); Assert.IsTrue(factory.NeedEdgeRouting("Random")); Assert.IsFalse(factory.NeedOverlapRemoval(string.Empty)); Assert.IsFalse(factory.NeedOverlapRemoval("Circular")); Assert.IsFalse(factory.NeedOverlapRemoval("Tree")); Assert.IsTrue(factory.NeedOverlapRemoval("FR")); Assert.IsTrue(factory.NeedOverlapRemoval("BoundedFR")); Assert.IsTrue(factory.NeedOverlapRemoval("KK")); Assert.IsTrue(factory.NeedOverlapRemoval("ISOM")); Assert.IsTrue(factory.NeedOverlapRemoval("LinLog")); Assert.IsFalse(factory.NeedOverlapRemoval("Sugiyama")); Assert.IsFalse(factory.NeedOverlapRemoval("CompoundFDP")); Assert.IsTrue(factory.NeedOverlapRemoval("Random")); }
public void ParameterRaise() { HashSet <string> expectedPropertyNames = null; var parameters = new FreeFRLayoutParameters(); parameters.PropertyChanged += (sender, args) => { // ReSharper disable AccessToModifiedClosure if (expectedPropertyNames is null) { Assert.Fail("Must not raise."); } else { Assert.IsTrue(expectedPropertyNames.Remove(args.PropertyName)); } // ReSharper restore AccessToModifiedClosure }; parameters.VertexCount = 0; expectedPropertyNames = new HashSet <string> { nameof(FreeFRLayoutParameters.VertexCount), nameof(FreeFRLayoutParameters.ConstantOfRepulsion), nameof(FreeFRLayoutParameters.ConstantOfAttraction), nameof(FreeFRLayoutParameters.InitialTemperature) }; parameters.VertexCount = 10; CollectionAssert.IsEmpty(expectedPropertyNames); expectedPropertyNames = null; parameters.AttractionMultiplier = 1.2; expectedPropertyNames = new HashSet <string> { nameof(FreeFRLayoutParameters.AttractionMultiplier), nameof(FreeFRLayoutParameters.ConstantOfAttraction) }; parameters.AttractionMultiplier = 1.4; CollectionAssert.IsEmpty(expectedPropertyNames); expectedPropertyNames = null; parameters.RepulsiveMultiplier = 0.6; expectedPropertyNames = new HashSet <string> { nameof(FreeFRLayoutParameters.RepulsiveMultiplier), nameof(FreeFRLayoutParameters.ConstantOfRepulsion) }; parameters.RepulsiveMultiplier = 0.7; CollectionAssert.IsEmpty(expectedPropertyNames); expectedPropertyNames = null; parameters.MaxIterations = 200; expectedPropertyNames = new HashSet <string> { nameof(FreeFRLayoutParameters.MaxIterations) }; parameters.MaxIterations = 150; CollectionAssert.IsEmpty(expectedPropertyNames); expectedPropertyNames = null; parameters.Lambda = 0.95; expectedPropertyNames = new HashSet <string> { nameof(FreeFRLayoutParameters.Lambda) }; parameters.Lambda = 0.99; CollectionAssert.IsEmpty(expectedPropertyNames); expectedPropertyNames = null; parameters.CoolingFunction = FRCoolingFunction.Exponential; expectedPropertyNames = new HashSet <string> { nameof(FreeFRLayoutParameters.CoolingFunction) }; parameters.CoolingFunction = FRCoolingFunction.Linear; CollectionAssert.IsEmpty(expectedPropertyNames); expectedPropertyNames = null; parameters.IdealEdgeLength = 10; expectedPropertyNames = new HashSet <string> { nameof(FreeFRLayoutParameters.IdealEdgeLength), nameof(FreeFRLayoutParameters.ConstantOfRepulsion), nameof(FreeFRLayoutParameters.ConstantOfAttraction), nameof(FreeFRLayoutParameters.K), nameof(FreeFRLayoutParameters.InitialTemperature) }; parameters.IdealEdgeLength = 12; CollectionAssert.IsEmpty(expectedPropertyNames); }