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<!doctype html>
<body>
<script src=/resources/testharness.js></script>
<script>
function loadImage(url, hasSharedStorageWritableAttribute) {
return new Promise(function(resolve, reject) {
var img = document.createElement('img');
document.body.appendChild(img);
img.onload = function() {
resolve(img);
};
img.onerror = function() {
reject(new Error('Image load failed'));
};
if (hasSharedStorageWritableAttribute) {
img.sharedStorageWritable = true;
}
img.src = url;
});
}
function loadFrame(url, hasSharedStorageWritableAttribute) {
return new Promise(function(resolve, reject) {
var frame = document.createElement('iframe');
document.body.appendChild(frame);
frame.onload = function() {
window.parent.postMessage({msg: 'iframe loaded'}, "*");
resolve(frame);
};
frame.onerror = function() {
reject(new Error('Nested iframe load failed'));
};
if (hasSharedStorageWritableAttribute) {
frame.sharedStorageWritable = true;
}
frame.src = url;
});
}
function fetchUrl(url, hasSharedStorageWritableAttribute) {
return new Promise(function(resolve, reject) {
fetch(url, {sharedStorageWritable:
hasSharedStorageWritableAttribute})
.then(response => {
if (!response.ok) {
throw new Error('Failed to fetch ' + url + '; '
+ String(response.status) + ' ' + response.statusText);
}
resolve(response);
}).catch(error => {
reject(error);
});
});
}
</script>
</body>
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