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57 lines
1.8 KiB
HTML
57 lines
1.8 KiB
HTML
<!DOCTYPE html>
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<!---
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Tentative test against:
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https://github.com/whatwg/fetch/pull/853
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-->
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<meta charset="utf-8">
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<title>Tests Stale While Revalidate works for scripts</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/utils.js"></script>
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<body>
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<script>
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var last_modified;
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var last_modified_count = 0;
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var request_token = token();
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// The script will call report via a uniquely generated ID on the subresource.
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// If it is a cache hit the ID will be the same and the test will pass.
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function report(mod) {
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if (!last_modified) {
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last_modified = mod;
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last_modified_count = 1;
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} else if (last_modified == mod) {
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last_modified_count++;
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}
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}
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async_test(t => {
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window.onload = t.step_func(() => {
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step_timeout(() => {
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var script = document.createElement("script");
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script.src = "stale-script.py?token=" + request_token;
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document.body.appendChild(script);
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script.onload = t.step_func(() => {
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assert_equals(last_modified_count, 2, "last modified");
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var checkResult = () => {
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// We poll because we don't know when the revalidation will occur.
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fetch("stale-script.py?query&token=" + request_token).then(t.step_func((response) => {
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var count = response.headers.get("Count");
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if (count == '2') {
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t.done();
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} else {
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t.step_timeout(checkResult, 25);
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}
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}));
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};
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t.step_timeout(checkResult, 25);
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});
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}, 0);
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});
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}, 'Cache returns stale resource');
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var script = document.createElement("script");
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script.src = "stale-script.py?token=" + request_token;
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document.body.appendChild(script);
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</script>
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</body>
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