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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/text/2d.text.measure.emHeights.worker.html - WPT Dashboard Interop Dashboard
// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.text.measure.emHeights
// Description:Testing emHeights
// Note:
importScripts("/resources/testharness.js");
importScripts("/html/canvas/resources/canvas-tests.js");
promise_test(async t => {
var canvas = new OffscreenCanvas(100, 50);
var ctx = canvas.getContext('2d');
var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
f.load();
self.fonts.add(f);
await self.fonts.ready;
ctx.font = '40px CanvasTest';
ctx.direction = 'ltr';
ctx.align = 'left'
_assertSame(ctx.measureText('A').emHeightAscent, 30, "ctx.measureText('A').emHeightAscent", "30");
_assertSame(ctx.measureText('A').emHeightDescent, 10, "ctx.measureText('A').emHeightDescent", "10");
_assertSame(ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent, 40, "ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent", "40");
_assertSame(ctx.measureText('ABCD').emHeightAscent, 30, "ctx.measureText('ABCD').emHeightAscent", "30");
_assertSame(ctx.measureText('ABCD').emHeightDescent, 10, "ctx.measureText('ABCD').emHeightDescent", "10");
_assertSame(ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent, 40, "ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent", "40");
}, "Testing emHeights");
done();