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// META: global=window,worker
// META: title=Tests Stale While Revalidate is executed for fetch API
// META: script=/common/utils.js
function wait25ms(test) {
return new Promise(resolve => {
test.step_timeout(() => {
resolve();
}, 25);
});
}
promise_test(async (test) => {
var request_token = token();
const response = await fetch(`resources/stale-script.py?token=` + request_token);
// Wait until resource is completely fetched to allow caching before next fetch.
const body = await response.text();
const response2 = await fetch(`resources/stale-script.py?token=` + request_token);
assert_equals(response.headers.get('Unique-Id'), response2.headers.get('Unique-Id'));
const body2 = await response2.text();
assert_equals(body, body2);
while(true) {
const revalidation_check = await fetch(`resources/stale-script.py?query&token=` + request_token);
if (revalidation_check.headers.get('Count') == '2') {
break;
}
await wait25ms(test);
}
}, 'Second fetch returns same response');
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