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// Poll the server for the test result.
async function get_stashed_topics_header(url) {
for (let i = 0; i < 30; ++i) {
const response = await fetch(url + '&query');
let stashed_topics_header = await response.text();
if (!stashed_topics_header || (stashed_topics_header === 'NO_PREVIOUS_REQUEST')) {
await new Promise(resolve => step_timeout(resolve, 100));
continue;
}
return stashed_topics_header;
}
assert_true(false, 'timeout');
}
// Load an image and poll for the topics header that
// check-topics-request-header-in-img.py should stash.
function load_topics_image(has_browsing_topics_attribute, is_same_origin) {
let stash_id = token();
const sameOriginSrc = `/browsing-topics/resources/` +
`check-topics-request-header-in-img.py?token=${stash_id}`;
sameOriginSrc;
const url = is_same_origin ? sameOriginSrc : crossOriginSrc
let image = document.createElement('img');
image.src = url;
if (has_browsing_topics_attribute) {
image.browsingTopics = true;
}
image.decode().then(() => {
document.body.appendChild(image);
});
return get_stashed_topics_header(url);
}