public void RandomizeSaturation_AdjustsColor()
{
// prereq
MathTest.MathTest math = new MathTest.MathTest();
math.IsBetween_ReturnsCorrectAnswer();
// arrange
Color color = new Color(0.1f, 0.2f, 0.3f);
float variation = 0.1f;
// act
float minR = color.r;
float maxR = minR + (1 - color.r) * variation;
color = Palette.RandomizeSaturation(color, variation);
// assert
Assert.AreNotEqual(0.1f, color.r);
Assert.IsTrue(color.r.IsBetween(minR, maxR));
}
public void RandomizeAlpha_AdjustsAlpha()
{
// prereq
MathTest.MathTest math = new MathTest.MathTest();
math.IsBetween_ReturnsCorrectAnswer();
// arrange
Color color = new Color(0.1f, 0.2f, 0.3f, 0.5f);
float variation = 0.25f;
// act
float min = 0.5f - variation;
float max = 0.5f + variation;
color = Palette.RandomizeAlpha(color, variation);
// assert
Assert.AreNotEqual(0.5f, color.a, "Does not always pass. Try running this test again.");
Assert.IsTrue(color.a.IsBetween(min, max, true, true));
}
public void Darken_ReturnsDarkerColor()
{
// prereq
IsValidColor_ExtensionReturnsAnswer();
IsBlack_ExtensionReturnsCorrectReponse();
Min_ExtensionReturnsSmallestRGBComponent();
MathTest.MathTest math = new MathTest.MathTest();
math.RemoveMin_ReturnsMinValueAndRemovesItFromList();
// arrange
Color source = new Color(0.2f, 0.3f, 0.5f);
float percent = 0.1f;
float distance = source.Min();
float fullAdjust = distance * 1.0f;
float partialAdjust = distance * percent;
Color expectedFull = new Color(
source.r - fullAdjust,
source.g - fullAdjust,
source.b - fullAdjust,
source.a
);
Color expectedPartial = new Color(
source.r - partialAdjust,
source.g - partialAdjust,
source.b - partialAdjust,
source.a
);
// act
Color full = Palette.Darken(source);
Color partial = Palette.Darken(source, percent);
// assert
Assert.IsTrue(full.IsValidColor(), "'full' " + full.ToString() + " is not a valid color");
Assert.AreEqual(expectedFull, full, "expected color and 'full' do not match");
Assert.IsTrue(partial.IsValidColor(), "'partial' " + partial.ToString() + " is not a valid color");
Assert.AreEqual(expectedPartial, partial, "expected color and 'partial' do not match");
}
