public void WhenConsecutiveCommandExecuted_StartAndEndPointSet()
{
//Prepare
Size size = new Size { Height = 500, Width = 500 };
Point[] line = new Point[] { new Point { X = 1, Y = 2 }, new Point { X = 3, Y = 4 } };
LineQueryResult lineQueryResult = new LineQueryResult { Result = line, Success = true };
Mock<ILineService> mockedLineService = new Mock<ILineService>();
mockedLineService.Setup(x => x.GetCanvasSize()).Returns(size).Verifiable();
mockedLineService.Setup(x => x.AddLineAsync(
It.Is<Point>(y => y.X == 0 && y.Y == 0),
It.Is<Point>(y => y.X == 0 && y.Y == 0),
It.IsAny<PathAlgorithm>(),
It.IsAny<CancellationToken>())).ReturnsAsync(lineQueryResult).Verifiable();
mockedLineService.Setup(x => x.SelectPoint(It.Is<Point>(y => y.X == 0 && y.Y == 0))).
Returns((Point y) => new PointQueryResult { Result = y, Success = true }).Verifiable();
CanvasViewModel target = new CanvasViewModel(mockedLineService.Object);
//Act
MouseEventArgs e = new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left);
target.SelectPointCommand.Execute(e);
target.SelectPointCommand.Execute(e);
//Verify
Assert.IsNull(target.StartPoint);
Assert.IsNull(target.EndPoint);
Assert.AreEqual(1, target.Lines.Count);
Assert.AreEqual(1, target.Lines[0][0].X);
Assert.AreEqual(2, target.Lines[0][0].Y);
Assert.AreEqual(3, target.Lines[0][1].X);
Assert.AreEqual(4, target.Lines[0][1].Y);
mockedLineService.VerifyAll();
}
/// <summary>
/// Compute and add a line to the underlying canvas model
/// based on the submitted start and end points using selected .
/// </summary>
/// <param name="startPoint">The line start point.</param>
/// <param name="endPoint">The line end point.</param>
/// <param name="algorithm">Pathfinding algorithm to use, defualt is BFS.</param>
/// <returns>The result of the operation.</returns>
public LineQueryResult AddLine(Point startPoint, Point endPoint, PathAlgorithm algorithm = PathAlgorithm.BFS)
{
LineQueryResult result = new LineQueryResult();
try
{
Stopwatch timer = new Stopwatch();
timer.Start();
Point[] computedLine = this.canvasModel.AddLine(startPoint, endPoint, algorithm);
timer.Stop();
result.Result = computedLine;
result.Success = true;
result.Time = timer.ElapsedMilliseconds;
}
catch (Exception ex)
{
Debug.Print(string.Format("Unable to add line: {0}", ex.Message));
result.Message = string.Format("Unable to find a path between points using {0} algorithm.", algorithm);
result.Success = false;
}
return result;
}