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Add leading/trailing whitespace subtests #49537

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Dec 5, 2024
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Add leading/trailing whitespace subtests #49537

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49 changes: 49 additions & 0 deletions html/canvas/element/text/2d.text.measure.actualBoundingBox.whitespace.html
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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<meta charset="UTF-8">
<title>Canvas test: 2d.text.measure.actualBoundingBox.whitespace</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.whitespace</h1>
<p class="desc">Testing actualBoundingBox with leading/trailing whitespace</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(Math.abs(ctx.measureText(' A').actualBoundingBoxLeft) >= 49, "Math.abs(ctx.measureText(' A').actualBoundingBoxLeft) >= 49");
_assert(ctx.measureText(' A').actualBoundingBoxRight <= 101, "ctx.measureText(' A').actualBoundingBoxRight <= 101");

}, "Testing actualBoundingBox with leading/trailing whitespace");
</script>

38 changes: 38 additions & 0 deletions html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.whitespace.html
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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<meta charset="UTF-8">
<title>OffscreenCanvas test: 2d.text.measure.actualBoundingBox.whitespace</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>

<h1>2d.text.measure.actualBoundingBox.whitespace</h1>
<p class="desc">Testing actualBoundingBox with leading/trailing whitespace</p>


<script>
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();
document.fonts.add(f);
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(Math.abs(ctx.measureText(' A').actualBoundingBoxLeft) >= 49, "Math.abs(ctx.measureText(' A').actualBoundingBoxLeft) >= 49");
_assert(ctx.measureText(' A').actualBoundingBoxRight <= 101, "ctx.measureText(' A').actualBoundingBoxRight <= 101");

}, "Testing actualBoundingBox with leading/trailing whitespace");
</script>
31 changes: 31 additions & 0 deletions html/canvas/offscreen/text/2d.text.measure.actualBoundingBox.whitespace.worker.js
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// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.text.measure.actualBoundingBox.whitespace
// Description:Testing actualBoundingBox with leading/trailing whitespace
// 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 = '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(Math.abs(ctx.measureText(' A').actualBoundingBoxLeft) >= 49, "Math.abs(ctx.measureText(' A').actualBoundingBoxLeft) >= 49");
_assert(ctx.measureText(' A').actualBoundingBoxRight <= 101, "ctx.measureText(' A').actualBoundingBoxRight <= 101");
}, "Testing actualBoundingBox with leading/trailing whitespace");
done();
23 changes: 23 additions & 0 deletions html/canvas/tools/yaml-new/text.yaml
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Expand Up @@ -1082,6 +1082,29 @@
variants:
- *load-font-variant-definition

- name: 2d.text.measure.actualBoundingBox.whitespace
desc: Testing actualBoundingBox with leading/trailing whitespace
test_type: promise
fonts:
- CanvasTest
code: |
{{ load_font }}
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;
@assert ctx.measureText('A ').actualBoundingBoxRight >= 50;

@assert Math.abs(ctx.measureText(' A').actualBoundingBoxLeft) >= 49;
@assert ctx.measureText(' A').actualBoundingBoxRight <= 101;
variants:
- *load-font-variant-definition

- name: 2d.text.measure.fontBoundingBox
desc: Testing fontBoundingBox measurements
test_type: promise
Expand Down