message: Add palette test for Color <-> Srgba & manipulation
diff: @@ -180,3 +180,44 @@ impl From<Color> for Srgba {
  Srgba::new(c.r, c.g, c.b, c.a)
  }
  }
  +
  +#[cfg(feature = "palette")]
  +#[cfg(test)]
  +mod tests {
  + use super::*;
  + use palette::Blend;
  +
  + #[test]
  + fn srgba_traits() {
  + let c = Color::from_rgb(0.5, 0.4, 0.3);
  + // Round-trip conversion to the palette:Srgba type
  + let s: Srgba = c.into();
  + let r: Color = s.into();
  + assert_eq!(c, r);
  + }
  +
  + #[test]
  + fn color_manipulation() {
  + let c1 = Color::from_rgb(0.5, 0.4, 0.3);
  + let c2 = Color::from_rgb(0.2, 0.5, 0.3);
  +
  + // Convert to linear color for manipulation
  + let l1 = c1.into_srgba().into_linear();
  + let l2 = c2.into_srgba().into_linear();
  +
  + // Take the lighter of each of the RGB components
  + let lighter = l1.lighten(l2);
  +
  + // Convert back to our Color
  + let r: Color = Srgba::from_linear(lighter).into();
  + assert_eq!(
  + r,
  + Color {
  + r: 0.5,
  + g: 0.5,
  + b: 0.3,
  + a: 1.0
  + }
  + );
  + }
  +}
  