<!DOCTYPE>
<canvas id="canvas2D" width="50" height="50" background-color="red"></canvas>
<script>
// Currently, we push a Green color frame from OffscreenCanvas; so we test
// whether the associated canvas has green pixel. In the future, when we
// change solidColorFrame to textureFrame, the expected png needs to changed too.
var canvas2D = document.getElementById("canvas2D");
var offscreenCanvas = canvas2D.transferControlToOffscreen();
var offscreen2d = offscreenCanvas.getContext("2d");
offscreen2d.commit();
</script>