zero-size-fill-rect.html | Explore in Territory

<!DOCTYPE html>
<title>Check Borkedness of canvas fill rect with zero size</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>

<canvas width="100" height="100"></canvas>
<script>
/*
  Creates a canvas which is filled red, then attempts to
  fill a number of 0 size rects, finally fills with green.

  Fill of a 0-sized rect should not throw an exception, so 
  we expected the output to be a green rect.
*/
async_test(function(t) {
    window.onload = t.step_func_done(function() {
        var canvas = document.querySelector('canvas');
        var context = canvas.getContext("2d");
        context.fillStyle = '#f00';
        context.fillRect(0, 0, canvas.width, canvas.height);
        context.fillRect(0, 0, 0, 0);
        context.fillRect(0, 0, canvas.width, 0);
        context.fillRect(0, 0, 0, canvas.height);
        context.fillStyle = '#0f0';
        context.fillRect(0, 0, canvas.width, canvas.height);
    });
});
</script>

chromium/third_party/blink/web_tests/fast/canvas/zero-size-fill-rect.html