public virtual void ZoomLevelToScaleFactorTest() { for (sbyte zoomLevel = ZOOM_LEVEL_MIN; zoomLevel <= ZOOM_LEVEL_MAX; ++zoomLevel) { double scaleFactor = MercatorProjection.ZoomLevelToScaleFactor(zoomLevel); Assert.AreEqual(zoomLevel, MercatorProjection.ScaleFactorToZoomLevel(scaleFactor), 0.0001f); } }