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Add a test for dealing with multiple image loading tasks when the list of available images is usable.

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This commit is contained in:
Josh Matthews 2018-12-03 17:12:46 -05:00
parent d404a0cddd
commit 037d8dd924
2 changed files with 43 additions and 0 deletions
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10
tests/wpt/metadata/MANIFEST.json
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@ -371095,6 +371095,12 @@
{}
]
],
"html/semantics/embedded-content/the-img-element/available-images-onload.html": [
[
"/html/semantics/embedded-content/the-img-element/available-images-onload.html",
{}
]
],
"html/semantics/embedded-content/the-img-element/current-pixel-density/basic.html": [
[
"/html/semantics/embedded-content/the-img-element/current-pixel-density/basic.html",
@ -624394,6 +624400,10 @@
"15e02bcf51535d45a702b0977f919eff8ce5ba9c",
"testharness"
],
"html/semantics/embedded-content/the-img-element/available-images-onload.html": [
"5fc5cb8b61986a020b52a16dd765a88459399165",
"testharness"
],
"html/semantics/embedded-content/the-img-element/available-images-ref.html": [
"8061abae50899a2befe286723d8bd5c285b356ab",
"support"

33
tests/wpt/web-platform-tests/html/semantics/embedded-content/the-img-element/available-images-onload.html Normal file
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@ -0,0 +1,33 @@
<!doctype html>
<html>
<title>Ensure images from available images list can be drawn to a canvas</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-list-of-available-images">
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
async_test(function(t) {
var i = new Image();
i.onerror = t.unreached_func();
i.onload = t.step_func(function() {
var i2 = new Image();
// Potentially start multiple image loading tasks by performing several
// relevant mutations. This could lead to an invalid state later in an
// erroneous implementation.
i2.crossOrigin = true;
// Start an image loading task that is expected to short-circuit since
// the requested image is present in the list of available images.
i2.src = "3.jpg";
i2.onerror = t.unreached_func();
// Ensure the loaded image is in a state that is usable by a 2d canvas.
i2.onload = t.step_func_done(function() {
var c = document.createElement('canvas');
var ctx = c.getContext('2d');
ctx.drawImage(i2, 0, 0);
});
});
// Request an image which should be added to the list of available images.
i.src = "3.jpg";
});
</script>