canvas-filter-with-em-expected.html

<!DOCTYPE html>
<!--  Since the font size changed, the second filter should be parsed again to
correctly draw the shadow. The expected version includes an additional whitespace
to force cnavas to parse again the filter since the strings are not equal.   -->
<html>
  <body>
    <canvas id="canvas"></canvas>
    <script>

      const canvas = document.getElementById("canvas");
      const ctx = canvas.getContext("2d");

      ctx.filter = "drop-shadow(1em 1em 0 red)";
      ctx.strokeRect(50, 50, 50, 50);
      ctx.font = "50px sans-serif";
      ctx.filter = "drop-shadow(1em 1em 0 red) ";
      ctx.strokeRect(50, 50, 50, 50);

    </script>
  </body>
</html>

chromium/third_party/blink/web_tests/fast/canvas/canvas-filter-with-em-expected.html