LayoutTests/imported/w3c/web-platform-tests/offscreen-canvas/text/2d.text.draw.baseline.top.worker.js

// DO NOT EDIT! This test has been generated by tools/gentest.py.
// OffscreenCanvas test in a worker:2d.text.draw.baseline.top
// Description:textBaseline top is the top of the em square (not the bounding box)
// Note:

importScripts("/resources/testharness.js");
importScripts("/2dcontext/resources/canvas-tests.js");

var t = async_test("textBaseline top is the top of the em square (not the bounding box)");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
    throw reason;
});
t.step(function() {

var offscreenCanvas = new OffscreenCanvas(100, 50);
var ctx = offscreenCanvas.getContext('2d');

ctx.font = '50px CanvasTest';
new Promise(function(resolve) { step_timeout(resolve, 500); })
  .then(function() {
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.textBaseline = 'top';
    ctx.fillText('CC', 0, 0);
    _assertPixelApprox(offscreenCanvas, 5,5, 0,255,0,255, "5,5", "0,255,0,255", 2);
    _assertPixelApprox(offscreenCanvas, 95,5, 0,255,0,255, "95,5", "0,255,0,255", 2);
    _assertPixelApprox(offscreenCanvas, 25,25, 0,255,0,255, "25,25", "0,255,0,255", 2);
    _assertPixelApprox(offscreenCanvas, 75,25, 0,255,0,255, "75,25", "0,255,0,255", 2);
    _assertPixelApprox(offscreenCanvas, 5,45, 0,255,0,255, "5,45", "0,255,0,255", 2);
    _assertPixelApprox(offscreenCanvas, 95,45, 0,255,0,255, "95,45", "0,255,0,255", 2);
  }).then(t_pass, t_fail);

});
done();