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<!doctype html>
<title>img viewport change</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<style>
.narrow { width:50px }
.wide { width:1000px }
</style>
<div id=log></div>
<script>
setup({explicit_done:true});
function resolve(url) {
if (url === "") {
return url;
}
var a = document.createElement('a');
a.href = url;
return a.href;
}
function insertIframe(className) {
var iframe = document.createElement('iframe');
iframe.className = className;
iframe.src = 'iframed.sub.html?id=' + token();
document.body.appendChild(iframe);
}
insertIframe('narrow');
insertIframe('wide');
var start_date = new Date();
onload = function() {
var load_time = new Date() - start_date;
var iframes = document.getElementsByTagName('iframe');
[].forEach.call(iframes, function(iframe) {
[].forEach.call(iframe.contentDocument.images, function(img) {
var expected = {wide:resolve(img.dataset.wide), narrow:resolve(img.dataset.narrow)};
var current = iframe.className;
var next = current === 'wide' ? 'narrow' : 'wide';
var expect_change = expected[next].indexOf('broken.png') === -1 && !('noChange' in img.dataset);
test(function() {
assert_equals(img.currentSrc, expected[current]);
}, img.dataset.desc + ', onload, ' + current);
async_test(function() {
img.onload = this.unreached_func('Got unexpected load event');
img.onerror = this.unreached_func('Got unexpected error event');
if (expect_change) {
img.onload = this.step_func_done(function() {
assert_equals(img.currentSrc, expected[next]);
});
} else {
setTimeout(this.step_func_done(), 500 + load_time);
}
}, img.dataset.desc + ', resize to ' + next);
});
iframe.classList.toggle('wide');
iframe.classList.toggle('narrow');
});
done();
}
</script>
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