servo/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.worker.js

// DO NOT EDIT! This test has been generated by tools/gentest.py.
// OffscreenCanvas test in a worker:2d.text.measure.width.basic
// Description:The width of character is same as font used for OffscreenCanvas
// Note:

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

var t = async_test("The width of character is same as font used for OffscreenCanvas");
t.step(function() {

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

deferTest();
var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
let fonts = (self.fonts ? self.fonts : document.fonts);
fonts.add(f);
fonts.ready.then(() => {
    step_timeout(t.step_func_done(function () {
        ctx.font = '50px CanvasTest';
        _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
        _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
        _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");

        ctx.font = '100px CanvasTest';
        _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
    }), 500);
});

t.done();

});
done();