public void TestCalculateBounds() { Placemark placemark = null; Assert.That(() => placemark.CalculateBounds(), Throws.TypeOf <ArgumentNullException>()); placemark = new Placemark(); Assert.That(placemark.CalculateBounds(), Is.Null); using (var stream = SampleData.CreateStream("Engine.Data.Bounds.kml")) { KmlFile file = KmlFile.Load(stream); foreach (var test in TestCases) { RunTestCase(file, test.Id, test.Box); } } }