public void ColorChange_Should_SpanColorRange(ActionParams actionData)
{
var sut = new LedWrapper ();
var result = sut.GetActionOutput (actionData);
// detemining that ColorChange spans color range uniformly is tricky because of dynamic precision in C++ code
// Instead, verify that increments happen uniformly and that start, middle and end colors are correct
result [0].Should ().Be (actionData.colorFrom);
result [actionData.effectiveResultsCount / 2].MaxDifference (actionData.colorFrom.MoveCloserTo (actionData.colorTo, 0.5)).Should ().BeLessOrEqualTo (2, "Middle color can be different only by a small margin");
result [actionData.effectiveResultsCount - 1].Should ().Be (actionData.colorTo);
List<int> diffs = new List<int> ();
for (int i = 1; i < actionData.effectiveResultsCount; i++)
{
var delta = result [i].MaxDifference (result [i - 1]);
diffs.Add (delta);
}
var notNullDiffs = diffs.Where (i => i != 0).ToList();
(notNullDiffs.Average() - notNullDiffs.Max()).Should ().BeLessThan (2, "Color increments should be uniform and can vary only due to rounding errors");
(notNullDiffs.Average() - notNullDiffs.Min()).Should ().BeLessThan (2);
var minDifferentValuesCount = actionData.duration / (Math.Max (actionData.tickLength, 32)); // precision is never less than 32ms
notNullDiffs.Count.Should ().BeGreaterOrEqualTo (Math.Min(actionData.colorTo.MaxDifference(actionData.colorFrom) / 2, minDifferentValuesCount - 2));
}
public void Strobe_Should_BeInOrder(ActionParams actionData)
{
var sut = new LedWrapper ();
var result = sut.GetActionOutput (actionData);
// ascending
int i = 0;
if (actionData.upPct != 0) result [0].Should ().Be (actionData.colorFrom);
while (i < actionData.effectiveResultsCount * actionData.upPct)
{
result [i + 1].IsCloserOrSameTo (actionData.colorTo, result [i]).Should ().BeTrue ();
i++;
}
// max brightness
while (i < actionData.effectiveResultsCount * (actionData.upPct + actionData.maxColorPct))
{
result [i].Should ().Be (actionData.colorTo);
i++;
}
// descending
while (i < actionData.effectiveResultsCount - 1)
{
result [i + 1].IsCloserOrSameTo (actionData.colorFrom, result[i]).Should ().BeTrue ();
i++;
}
if (actionData.upPct + actionData.maxColorPct < 1) result [actionData.effectiveResultsCount].Should ().Be (actionData.colorFrom);
}
public void ColorChange_Should_ShowBlack_AfterEnd(ActionParams actionData)
{
var sut = new LedWrapper ();
var result = sut.GetActionOutput (actionData);
var afterEndElemets = result.Skip (actionData.effectiveResultsCount + 1).ToList ();
afterEndElemets.Count.Should ().Be (actionData.afterEndResultsCount);
if (actionData.delayAfter > 0) afterEndElemets.Should ().OnlyContain (c => c.Equals(RGBColors.COLOR_BLACK));
}
public void ColorChange_Should_BeInOrder(ActionParams actionData)
{
var sut = new LedWrapper ();
var result = sut.GetActionOutput (actionData);
for (int i = 1; i < actionData.effectiveResultsCount; i++)
{
result [i].IsCloserOrSameTo (actionData.colorTo, result [i - 1]).Should ().BeTrue ();
}
}