public void AssertThat_AddEdges_IncreasesCount() { var r = new Random(123); for (var i = 0; i < 3000; i++) { _set.Add(new LineSegment2( new Vector2(RandomUtilities.RandomSingle(r.NextDouble, -100, 100), RandomUtilities.RandomSingle(r.NextDouble, -100, 100)), new Vector2(RandomUtilities.RandomSingle(r.NextDouble, -100, 100), RandomUtilities.RandomSingle(r.NextDouble, -100, 100)) ), 1); Assert.AreEqual(i + 1, _set.Count); } }