public void ShouldThrowExceptionWhenParameterIsNotAPositiveInteger()
{
Assert.That(() => {
var command = new CanvasDrawingCommand();
command.Draw("-2", "-9");
}, Throws.InstanceOf <ArgumentException>());
}
public void ShouldThrowExceptionWhenParameterIsNotANumber()
{
Assert.That(() => {
var command = new CanvasDrawingCommand();
command.Draw("xxx", "yyy");
}, Throws.InstanceOf <ArgumentException>());
}
public void ShouldDrawRectangle()
{
var canvasDrawingCommand = new CanvasDrawingCommand();
canvasDrawingCommand.Draw("20", "4");
var canvas = canvasDrawingCommand.Canvas;
var rectangleDrawingCommand = new RectangleDrawingCommand(canvas);
rectangleDrawingCommand.Draw("14", "1", "18", "3");
var elements = canvas.Elements;
for (var i = 14; i <= 18; i++)
{
Assert.AreEqual("x", elements[i, 1].Value);
Assert.AreEqual("x", elements[i, 3].Value);
}
for (var i = 1; i <= 3; i++)
{
Assert.AreEqual("x", elements[14, i].Value);
Assert.AreEqual("x", elements[18, i].Value);
}
}
public void ShouldCreateCanvas()
{
var command = new CanvasDrawingCommand();
command.Draw("20", "4");
Assert.NotNull(command.Canvas);
}
public void ShouldCreateCanvasWithWidthAndHeight()
{
var command = new CanvasDrawingCommand();
command.Draw("20", "4");
var canvas = command.Canvas;
Assert.IsNotNull(canvas.Elements);
Assert.AreEqual(21, canvas.Elements.GetUpperBound(0));
Assert.AreEqual(5, canvas.Elements.GetUpperBound(1));
}
public void CanNotDrawLineOutOfCanvas()
{
var canvasDrawingCommand = new CanvasDrawingCommand();
canvasDrawingCommand.Draw("20", "4");
var canvas = canvasDrawingCommand.Canvas;
Assert.That(() => {
var lineDrawingCommand = new LineDrawingCommand(canvas);
lineDrawingCommand.Draw("1", "5", "6", "5");
}, Throws.InstanceOf <ArgumentOutOfRangeException>());
}
public void ShouldDrawLineInCanvas()
{
var canvasDrawingCommand = new CanvasDrawingCommand();
canvasDrawingCommand.Draw("20", "4");
var canvas = canvasDrawingCommand.Canvas;
var lineDrawingCommand = new LineDrawingCommand(canvas);
lineDrawingCommand.Draw("1", "2", "6", "2");
var elements = canvas.Elements;
for (int i = 1; i <= 6; i++)
{
Assert.AreEqual("x", elements[i, 2].Value);
}
}
public void ShouldFillArea()
{
var canvasDrawingCommand = new CanvasDrawingCommand();
canvasDrawingCommand.Draw("20", "4");
var canvas = canvasDrawingCommand.Canvas;
var lineDrawingCommand = new LineDrawingCommand(canvas);
lineDrawingCommand.Draw("1", "2", "6", "2");
lineDrawingCommand.Draw("6", "3", "6", "4");
var rectangleDrawingCommand = new RectangleDrawingCommand(canvas);
rectangleDrawingCommand.Draw("14", "1", "18", "3");
var bucketFillDrawingCommand = new BucketFillDrawingCommand(canvas);
bucketFillDrawingCommand.Draw("10", "3", "o");
var elements = canvas.Elements;
var filledCount = 0;
var emptyCount = 0;
for (var x = 0; x < elements.GetUpperBound(0); x++)
{
for (var y = 0; y < elements.GetUpperBound(1); y++)
{
if (elements[x, y] == null)
{
emptyCount++;
}
else if (elements[x, y].Value.Equals("o"))
{
filledCount++;
}
}
}
Assert.AreEqual(13, emptyCount);
Assert.AreEqual(47, filledCount);
}
public void ShouldCreateCanvasWithBoundaryElementsCreated()
{
var command = new CanvasDrawingCommand();
command.Draw("20", "4");
var canvas = command.Canvas;
var points = canvas.Elements;
for (int x = 0; x < 22; x++)
{
Assert.AreEqual("-", points[x, 0].Value);
Assert.AreEqual("-", points[x, 5].Value);
}
for (int y = 1; y < 5; y++)
{
Assert.AreEqual("|", points[0, y].Value);
Assert.AreEqual("|", points[21, y].Value);
}
}