public void TestLineHashing()
{
GeometryCollection geometry = new GeometryCollection();
geometry.Add(new Line(new Vector2(-1, 0), new Vector2(1, 0)));
geometry.Add(new Line(new Vector2(-1, 0), new Vector2(1, 0)));
geometry.Add(new Line(new Vector2(1, 0), new Vector2(-1, 0)));
geometry.Add(new Line(new Vector2(1, 0), new Vector2(-1, 0)));
Assert.AreEqual(2, geometry.GetPointsAsArray().Length);
Assert.AreEqual(2, geometry.GetLinesAsIndexArray().Length);
}