third_party/blink/web_tests/external/wpt/offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js

// DO NOT EDIT! This test has been generated by tools/gentest.py.
// OffscreenCanvas test in a worker:2d.text.measure.actualBoundingBox
// Description:Testing actualBoundingBox for OffscreenCanvas
// Note:

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

var t = async_test("Testing actualBoundingBox 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';
        ctx.direction = 'ltr';
        ctx.align = 'left'
        ctx.baseline = 'alphabetic'
        // Some platforms may return '-0'.
        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxLeft)", "0");
        // Different platforms may render text slightly different.
        _assert(ctx.measureText('A').actualBoundingBoxRight >= 50, "ctx.measureText('A').actualBoundingBoxRight >= 50");
        _assert(ctx.measureText('A').actualBoundingBoxAscent >= 35, "ctx.measureText('A').actualBoundingBoxAscent >= 35");
        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxDescent), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxDescent)", "0");

        _assertSame(Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft)", "0");
        _assert(ctx.measureText('ABCD').actualBoundingBoxRight >= 200, "ctx.measureText('ABCD').actualBoundingBoxRight >= 200");
        _assert(ctx.measureText('ABCD').actualBoundingBoxAscent >= 85, "ctx.measureText('ABCD').actualBoundingBoxAscent >= 85");
        _assert(ctx.measureText('ABCD').actualBoundingBoxDescent >= 37, "ctx.measureText('ABCD').actualBoundingBoxDescent >= 37");
    }), 500);
});

t.done();

});
done();