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<!DOCTYPE html>
<meta charset=utf-8>
<meta name="timeout" content="long">
<title>HTMLImageElement.prototype.decode(), iframe tests.</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-decode">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="frame_loaded" srcdoc="iframe"></iframe>
<iframe id="frame_notloaded" srcdoc="iframe"></iframe>
<iframe id="frame_notloaded2" srcdoc="iframe"></iframe>
<script>
"use strict";
promise_test(function() {
return new Promise(function(resolve, reject) {
var frame = document.getElementById("frame_loaded");
var img = frame.contentDocument.createElement("img");
img.src = "/images/green.png";
img.onload = function() {
// At this point the frame which created the img is removed, so decode() should fail.
frame.parentNode.removeChild(frame);
img.decode().then(function() {
assert_unreached("Unexpected success");
}, function() {
resolve();
});
};
});
}, document.title + " Decode from removed iframe fails (loaded img)");
promise_test(function(t) {
var frame = document.getElementById("frame_notloaded");
var img = frame.contentDocument.createElement("img");
img.src = "/images/green.png";
frame.parentNode.removeChild(frame);
var promise = img.decode();
return promise_rejects_dom(t, "EncodingError", promise);
}, document.title + " Decode from removed iframe fails (img not loaded)");
promise_test(function(t) {
var frame = document.getElementById("frame_notloaded2");
var img = frame.contentDocument.createElement("img");
img.src = "/images/green.png";
// First request a promise, then remove the iframe.
var promise = img.decode();
frame.parentNode.removeChild(frame);
return promise_rejects_dom(t, "EncodingError", promise);
}, document.title + " Decode from iframe, later removed, fails (img not loaded)");
</script>
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