css/css-images/gradient/gradient-none-interpolation.html

<!DOCTYPE html>
<html>
 <head>
  <title>Gradient interpolation</title>
  <link rel="author" title="Aaron Krajeski" href="mailto:aaronhk@chromium.org">
  <link rel="help" href="https://www.w3.org/TR/css-color-4/#interpolation">
  <meta name="assert" content="Color stops with missing components should split into two stops and take their neighboring values.">
  <link rel="match" href="gradient-none-interpolation-ref.html">
  <meta name="fuzzy" content="maxDifference=1; totalPixels=0-5000">
  <style>
    div {
      height: 100px;
    }
    #basic {
      /* "none" should split into two and take each neighboring value. */
      background: linear-gradient(to right in srgb, color(srgb 0.5 0 0), color(srgb none 0.5 0.5), color(srgb 1 1 1));
    }
    #multipleNone {
      /* "none" and "none" gives zero. */
      background: linear-gradient(to right in srgb, color(srgb none 0 0), color(srgb none 0.5 0.5), color(srgb 1 1 1));
    }
    #allNone {
      /* "none" and "none" gives zero. */
      background: linear-gradient(to right in srgb, color(srgb none 0 0), color(srgb none 1 1));
    }
    #noneHue {
      background: linear-gradient(to right in oklch, oklch(0.2 0.1 90), oklch(0.8 0.4 none), oklch(0.3 0.2 180));
    }
    #noneHueLonger {
      background: linear-gradient(to right in oklch longer hue, oklch(0.2 0.1 90), oklch(0.5 0.3 none), oklch(0.8 0.4 180));
    }
    #transparentHueIsPowerless {
      /* When "transparent" is converted to oklch, the hue of the resulting stop should act as if it were missing. */
      background: linear-gradient(to right in oklch, red, transparent, blue);
    }
 </style>
 </head>
 <body>
  <div id="basic"></div>
  <div id="multipleNone"></div>
  <div id="allNone"></div>
  <div id="noneHue"></div>
  <div id="noneHueLonger"></div>
  <div id="transparentHueIsPowerless"></div>
 </body>
</html>