public void ShapesRepository_Remove_RemoveAll_Test()
{
Polygon polygon1 = new Polygon();
Polygon polygon2 = new Polygon();
Polygon polygon3 = new Polygon();
ShapesRepository arr = new ShapesRepository();
arr.Add(polygon1);
arr.Add(polygon2);
arr.Remove(polygon2);
Assert.AreEqual(1, arr.Polygons.Count);
arr.Add(polygon2);
arr.Add(polygon3);
arr.RemoveAll();
Assert.AreEqual(0, arr.Polygons.Count);
}
