public void FillBackwardThenForwardTest()
{
var sp = new StockPrices(new[] { float.NaN, 1, float.NaN, 2, float.NaN });
sp.ReplaceNanFill(FillDirection.Backward).ReplaceNanFill(FillDirection.Forward);
var expected = new[] { 1f, 1f, 2f, 2f, 2f };
CollectionAssert.AreEqual(expected, sp.Prices);
}
