public void Graph_MoveAntToAnyAdjacentVertex_Success()
{
var loaderMock = new Mock <IDataLoader>();
loaderMock.Setup(m => m.LoadData()).Returns(_dummyFile);
var randomMock = new StubRandom()
{
NextInt32Int32 = (a, b) => 1
};
var graph = new MetisGraph(loaderMock.Object, randomMock);
graph.InitializeGraph();
graph.InitializeAnts(_optionTwoColors.NumberOfAnts);
graph.ColorVerticesRandomly(_optionTwoColors.NumberOfPartitions);
graph.CalculateLocalCostFunction();
graph.MoveAntToAnyAdjacentVertex(0);
Assert.AreEqual(4, graph.Vertices[graph.Ants[0]].ID);
graph.MoveAntToAnyAdjacentVertex(1);
Assert.AreEqual(5, graph.Vertices[graph.Ants[1]].ID);
}
public void Graph_UpdateLocalCostFunction_Success()
{
var loaderMock = new Mock <IDataLoader>();
loaderMock.Setup(m => m.LoadData()).Returns(_dummyFile);
var randomMock = new StubRandom()
{
NextInt32Int32 = (a, b) => 1
};
var graph = new MetisGraph(loaderMock.Object, randomMock);
graph.InitializeGraph();
graph.InitializeAnts(_optionTwoColors.NumberOfAnts);
graph.ColorVerticesRandomly(_optionTwoColors.NumberOfPartitions);
Vertex vertexWithAnt = graph.MoveAntToAnyAdjacentVertex(0);
int oldColor = vertexWithAnt.Color;
int vertexWithAntID = vertexWithAnt.ID;
Vertex vertexWithNewColor = graph.ColorVertexWithBestColor(0);
Vertex vertexWhichKeepBalance = graph.KeepBalance(_optionTwoColors.NumberOfVerticesForBalance, vertexWithAntID,
oldColor, vertexWithNewColor.Color);
graph.UpdateLocalCostFunction(vertexWhichKeepBalance, vertexWithNewColor);
Assert.AreEqual(0.5, graph.Vertices[0].LocalCost);
Assert.AreEqual(0.5, graph.Vertices[1].LocalCost);
Assert.AreEqual(0.25, graph.Vertices[2].LocalCost);
Assert.AreEqual(0D, graph.Vertices[3].LocalCost);
Assert.AreEqual(0.5, graph.Vertices[4].LocalCost);
Assert.AreEqual(0.75, graph.Vertices[5].LocalCost);
Assert.AreEqual(0, graph.Vertices[6].LocalCost);
}
public void Graph_KeepBalance_EquallyBalanced()
{
var loaderMock = new Mock <IDataLoader>();
loaderMock.Setup(m => m.LoadData()).Returns(_dummyFile);
var randomMock = new StubRandom()
{
NextInt32Int32 = (a, b) => 1
};
var graph = new MetisGraph(loaderMock.Object, randomMock);
graph.InitializeGraph();
graph.InitializeAnts(_optionTwoColors.NumberOfAnts);
graph.ColorVerticesRandomly(_optionTwoColors.NumberOfPartitions);
Vertex vertexWithAnt = graph.MoveAntToAnyAdjacentVertex(0);
int oldColor = vertexWithAnt.Color;
int vertexWithAntID = vertexWithAnt.ID;
Vertex newVertex = graph.ColorVertexWithBestColor(0);
graph.KeepBalance(_optionTwoColors.NumberOfVerticesForBalance, vertexWithAntID, oldColor, newVertex.Color);
var numberOfVerticesWithFirstColor = graph.Vertices.Count(vertex => vertex.Color == 1);
var numberOfVerticesWithSecondColor = graph.Vertices.Count(vertex => vertex.Color == 2);
Assert.AreEqual(4, numberOfVerticesWithFirstColor);
Assert.AreEqual(3, numberOfVerticesWithSecondColor);
}
public void Graph_KeepBalance_CorrectlyColored()
{
var loaderMock = new Mock <IDataLoader>();
loaderMock.Setup(m => m.LoadData()).Returns(_dummyFile);
var randomMock = new StubRandom()
{
NextInt32Int32 = (a, b) => 1
};
var graph = new MetisGraph(loaderMock.Object, randomMock);
graph.InitializeGraph();
graph.InitializeAnts(_optionTwoColors.NumberOfAnts);
graph.ColorVerticesRandomly(_optionTwoColors.NumberOfPartitions);
Vertex vertexWithAnt = graph.MoveAntToAnyAdjacentVertex(0);
int oldColor = vertexWithAnt.Color;
int vertexWithAntID = vertexWithAnt.ID;
Vertex newVertex = graph.ColorVertexWithBestColor(0);
graph.KeepBalance(_optionTwoColors.NumberOfVerticesForBalance, vertexWithAntID, oldColor, newVertex.Color);
Assert.AreEqual(2, graph.Vertices[0].Color);
Assert.AreEqual(1, graph.Vertices[1].Color);
Assert.AreEqual(2, graph.Vertices[2].Color);
Assert.AreEqual(1, graph.Vertices[3].Color);
Assert.AreEqual(1, graph.Vertices[4].Color);
Assert.AreEqual(1, graph.Vertices[5].Color);
Assert.AreEqual(2, graph.Vertices[6].Color);
}