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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/the-img-element/decode/image-decode-picture.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset=utf-8>
<meta name="timeout" content="long">
<title>HTMLImageElement.prototype.decode(), picture tests.</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<picture>
<source srcset="/images/green.png">
<source srcset="/images/blue.png">
<img id="testimg">
</picture>
<script>
"use strict";
promise_test(function() {
var picture = document.createElement("picture");
var source = document.createElement("source");
var img = document.createElement("img");
picture.appendChild(source);
picture.appendChild(img);
source.srcset = "/images/green.png";
return img.decode().then(function(arg) {
assert_equals(arg, undefined);
});
}, document.title + " Image with PNG source decodes with undefined.");
promise_test(function() {
var img = document.getElementById("testimg");
return img.decode().then(function(arg) {
assert_equals(arg, undefined);
});
}, document.title + " Image with multiple sources decodes with undefined.");
promise_test(function() {
var picture = document.createElement("picture");
var source = document.createElement("source");
var img = document.createElement("img");
picture.appendChild(source);
picture.appendChild(img);
source.srcset = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIA" +
"AAD91JpzAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH4QUSEioKsy" +
"AgywAAABl0RVh0Q29tbWVudABDcmVhdGVkIHdpdGggR0lNUFeBDhcAAAAW" +
"SURBVAjXY9y3bx8DAwPL58+fGRgYACktBRltLfebAAAAAElFTkSuQmCC";
return img.decode().then(function(arg) {
assert_equals(arg, undefined);
});
}, document.title + " Image with PNG data URL source decodes with undefined.");
promise_test(function() {
var picture = document.createElement("picture");
var source = document.createElement("source");
var img = document.createElement("img");
picture.appendChild(source);
picture.appendChild(img);
source.srcset = "/images/green.svg";
return img.decode().then(function(arg) {
assert_equals(arg, undefined);
});
}, document.title + " Image with SVG source decodes with undefined.");
promise_test(function(t) {
var picture = document.createElement("picture");
var source = document.createElement("source");
var img = document.createElement("img");
picture.appendChild(source);
picture.appendChild(img);
source.srcset = "/non/existent/path.png";
var promise = img.decode();
return promise_rejects_dom(t, "EncodingError", promise);
}, document.title + " Non-existent source fails decode.");
promise_test(function(t) {
var picture = document.createElement("picture");
var source = document.createElement("source");
var img = document.createElement("img");
picture.appendChild(source);
picture.appendChild(img);
source.srcset = "data:image/png;base64,iVBO00PDR0BADBEEF00KGg";
var promise = img.decode();
return promise_rejects_dom(t, "EncodingError", promise);
}, document.title + " Corrupt image in src fails decode.");
promise_test(function(t) {
var picture = document.createElement("picture");
var source = document.createElement("source");
var img = document.createElement("img");
picture.appendChild(source);
picture.appendChild(img);
var promise = img.decode();
return promise_rejects_dom(t, "EncodingError", promise);
}, document.title + " Image without srcset fails decode.");
promise_test(function() {
var picture = document.createElement("picture");
var source = document.createElement("source");
var img = document.createElement("img");
picture.appendChild(source);
picture.appendChild(img);
source.srcset = "/images/green.png";
var first_promise = img.decode();
var second_promise = img.decode();
assert_not_equals(first_promise, second_promise);
return Promise.all([
first_promise,
second_promise
]);
}, document.title + " Multiple decodes for images with src succeed.");
</script>