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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>Canvas test: 2d.text.measure.actualBoundingBox</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
<style>
@font-face {
font-family: CanvasTest;
src: url("/fonts/CanvasTest.ttf");
}
</style>
<body class="show_output">
<h1>2d.text.measure.actualBoundingBox</h1>
<p class="desc">Testing actualBoundingBox</p>
<span style="font-family: CanvasTest; position: absolute; visibility: hidden">A</span>
<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
<ul id="d"></ul>
<script>
promise_test(async t => {
var canvas = document.getElementById('c');
var ctx = canvas.getContext('2d');
await document.fonts.ready;
ctx.font = '50px CanvasTest';
ctx.direction = 'ltr';
ctx.align = 'left'
ctx.baseline = 'alphabetic'
// Different platforms may render text slightly different.
// Values that are nominally expected to be zero might actually vary by a
// pixel or so if the UA accounts for antialiasing at glyph edges, so we
// allow a slight deviation.
_assert(Math.abs(ctx.measureText('A').actualBoundingBoxLeft) <= 1, "Math.abs(ctx.measureText('A').actualBoundingBoxLeft) <= 1");
_assert(ctx.measureText('A').actualBoundingBoxRight >= 50, "ctx.measureText('A').actualBoundingBoxRight >= 50");
_assert(ctx.measureText('A').actualBoundingBoxAscent >= 35, "ctx.measureText('A').actualBoundingBoxAscent >= 35");
_assert(Math.abs(ctx.measureText('A').actualBoundingBoxDescent) <= 1, "Math.abs(ctx.measureText('A').actualBoundingBoxDescent) <= 1");
_assert(ctx.measureText('D').actualBoundingBoxLeft >= 48, "ctx.measureText('D').actualBoundingBoxLeft >= 48");
_assert(ctx.measureText('D').actualBoundingBoxLeft <= 52, "ctx.measureText('D').actualBoundingBoxLeft <= 52");
_assert(ctx.measureText('D').actualBoundingBoxRight >= 75, "ctx.measureText('D').actualBoundingBoxRight >= 75");
_assert(ctx.measureText('D').actualBoundingBoxRight <= 80, "ctx.measureText('D').actualBoundingBoxRight <= 80");
_assert(ctx.measureText('D').actualBoundingBoxAscent >= 35, "ctx.measureText('D').actualBoundingBoxAscent >= 35");
_assert(ctx.measureText('D').actualBoundingBoxAscent <= 40, "ctx.measureText('D').actualBoundingBoxAscent <= 40");
_assert(ctx.measureText('D').actualBoundingBoxDescent >= 12, "ctx.measureText('D').actualBoundingBoxDescent >= 12");
_assert(ctx.measureText('D').actualBoundingBoxDescent <= 15, "ctx.measureText('D').actualBoundingBoxDescent <= 15");
_assert(Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft) <= 1, "Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft) <= 1");
_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");
}, "Testing actualBoundingBox");
</script>
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