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<!DOCTYPE html>
<title>Mutating speculationrules script elements</title>
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="/common/utils.js"></script>
<script src="../resources/utils.js"></script>
<script src="resources/utils.sub.js"></script>
<script>
"use strict";
setup(() => assertSpeculationRulesIsSupported());
promise_test(async t => {
const win = await spawnWindow(t);
const nextURL = win.getExecutorURL({ executor: "counting-executor.py", page: 2 });
// Prefetch the URL which will count whether or not we're prefetched.
await win.forceSinglePrefetch(nextURL);
// Check that the server was indeed hit with a prefetch request.
const requestCount = await (await fetch(nextURL + "&check")).json();
assert_equals(requestCount.prefetch, 1, "prefetch count");
assert_equals(requestCount.nonPrefetch, 0, "non-prefetch count");
// Now remove the speculation rules.
await win.execute_script(() => {
document.querySelector("script[type=speculationrules]").remove();
});
// Navigating must not use the prefetched result.
await win.navigate(nextURL);
assert_not_prefetched(await win.getRequestHeaders());
}, "Removing the <script type=speculationrules> must cancel the prefetch");
promise_test(async t => {
const win = await spawnWindow(t);
const nextURL = win.getExecutorURL({ executor: "counting-executor.py", page: 2 });
// Prefetch the URL which will count whether or not we're prefetched.
await win.forceSinglePrefetch(nextURL);
// Check that the server was indeed hit with a prefetch request.
const requestCount = await (await fetch(nextURL + "&check")).json();
assert_equals(requestCount.prefetch, 1, "prefetch count");
assert_equals(requestCount.nonPrefetch, 0, "non-prefetch count");
// Now update the speculation rules to remove that rule.
await win.execute_script(() => {
document.querySelector("script[type=speculationrules]").textContent = JSON.stringify({
prefetch: []
});
});
// Navigating must use the prefetched result.
await win.navigate(nextURL);
assert_prefetched(await win.getRequestHeaders());
}, "Removing a rule from the <script type=speculationrules> must not cancel the prefetch");
promise_test(async t => {
const win = await spawnWindow(t);
const nextURL = win.getExecutorURL({ executor: "counting-executor.py", page: 2 });
// Insert some empty speculation rules
await win.forceSpeculationRules([]);
// Now update them to include a prefetch (and wait for a bit.)
await win.execute_script(([nextURL]) => {
document.querySelector("script[type=speculationrules]").textContent = JSON.stringify({
prefetch: [{ urls: [nextURL] }]
});
}, [nextURL]);
new Promise(resolve => t.step_timeout(resolve, 2000));
const requestCount = await (await fetch(nextURL + "&check")).json();
assert_equals(requestCount.prefetch, 0, "prefetch count");
assert_equals(requestCount.nonPrefetch, 0, "non-prefetch count");
// Navigating must not use the prefetched result.
await win.navigate(nextURL);
assert_not_prefetched(await win.getRequestHeaders());
}, "Adding a rule to the <script type=speculationrules> must not prefetch");
</script>
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