public void TestPrintNegative()
{
//setup
var rects = new List <RectangleDTO>();
rects.Add(new RectangleDTO(10, 10, -10, -20));
var ms = new MemoryStream();
var output = new StreamWriter(ms);
//test
var calculator = new RectanglesIntersectionsCalculator(rects, output);
calculator.PrintInput();
output.Flush();
ms.Seek(0, SeekOrigin.Begin);
var str = (new StreamReader(ms)).ReadToEnd();
var template = $"Input:{Environment.NewLine}\t0: Rectangle at (0,-10, delta_x=10, delta_y=20){Environment.NewLine}";
Assert.AreEqual(template, str);
}
public void TestSampleOutput()
{
//setup
var rects = new List <RectangleDTO>();
rects.Add(new RectangleDTO(100, 100, 250, 80));
rects.Add(new RectangleDTO(120, 200, 250, 150));
rects.Add(new RectangleDTO(140, 160, 250, 100));
rects.Add(new RectangleDTO(160, 140, 350, 190));
var ms = new MemoryStream();
var output = new StreamWriter(ms);
//test
var calculator = new RectanglesIntersectionsCalculator(rects, output);
calculator.TestCollision();
var intersections = calculator.CalculatedIntersections;
//verify
Assert.AreEqual(7, intersections.Count);
Assert.AreEqual("1-3", intersections[0].Id);
Assert.AreEqual("(140,160), delta_x=210, delta_y=20", intersections[0].inter.PrintForOutput());
Assert.AreEqual("1-4", intersections[1].Id);
Assert.AreEqual("(160,140), delta_x=190, delta_y=40", intersections[1].inter.PrintForOutput());
Assert.AreEqual("2-3", intersections[2].Id);
Assert.AreEqual("(140,200), delta_x=230, delta_y=60", intersections[2].inter.PrintForOutput());
//Assert.AreEqual failed.
//Expected: <(140,200), delta_x=230, delta_y=60>.
//Actual: <(160,140), delta_x=190, delta_y=40>.
Assert.AreEqual("2-4", intersections[3].Id);
Assert.AreEqual("(160,200), delta_x=210, delta_y=130", intersections[3].inter.PrintForOutput());
Assert.AreEqual("3-4", intersections[4].Id);
Assert.AreEqual("(160,160), delta_x=230, delta_y=100", intersections[4].inter.PrintForOutput());
Assert.AreEqual("1-3-4", intersections[5].Id);
Assert.AreEqual("(160,160), delta_x=190, delta_y=20", intersections[5].inter.PrintForOutput());
Assert.AreEqual("2-3-4", intersections[6].Id);
Assert.AreEqual("(160,200), delta_x=210, delta_y=60", intersections[6].inter.PrintForOutput());
calculator.PrintOutput();
output.Flush();
ms.Seek(0, SeekOrigin.Begin);
var str = (new StreamReader(ms)).ReadToEnd();
var template = $"Intersections:{Environment.NewLine}";
template += $"\t1: Between rectangle 1 and 3 at (140,160), delta_x=210, delta_y=20.{Environment.NewLine}";
template += $"\t2: Between rectangle 1 and 4 at (160,140), delta_x=190, delta_y=40.{Environment.NewLine}";
template += $"\t3: Between rectangle 2 and 3 at (140,200), delta_x=230, delta_y=60.{Environment.NewLine}";
template += $"\t4: Between rectangle 2 and 4 at (160,200), delta_x=210, delta_y=130.{Environment.NewLine}";
template += $"\t5: Between rectangle 3 and 4 at (160,160), delta_x=230, delta_y=100.{Environment.NewLine}";
template += $"\t6: Between rectangle 1, 3 and 4 at (160,160), delta_x=190, delta_y=20.{Environment.NewLine}";
template += $"\t7: Between rectangle 2, 3 and 4 at (160,200), delta_x=210, delta_y=60.{Environment.NewLine}";
Assert.AreEqual(template, str);
}