64 lines
2.4 KiB
HTML
64 lines
2.4 KiB
HTML
<!doctype html>
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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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<script src="/shared-storage/resources/util.js"></script>
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<script src="/fenced-frame/resources/utils.js"></script>
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<body>
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<script>
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'use strict';
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promise_test(async t => {
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let worklet1 = await sharedStorage.createWorklet('resources/simple-module.js');
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let worklet2 = await sharedStorage.createWorklet('resources/simple-module.js');
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const ancestor_key1 = token();
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let url1_0 = generateURL("/shared-storage/resources/frame0.html",
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[ancestor_key1]);
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let url1_1 = generateURL("/shared-storage/resources/frame1.html",
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[ancestor_key1]);
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const ancestor_key2 = token();
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let url2_0 = generateURL("/shared-storage/resources/frame0.html",
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[ancestor_key2]);
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let url2_1 = generateURL("/shared-storage/resources/frame1.html",
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[ancestor_key2]);
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// Two `selectURL()`s run in parallel. Each performs the following steps:
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// 1. Acquires the lock.
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// 2. Reads the current value of the given key.
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// 3. Waits for 100ms.
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// 4. Increments the value.
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// 5. Releases the lock.
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//
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// Expected behavior: After both operations finish, the value of the given key
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// should be 2.
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//
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// This demonstrates that the lock is effective, preventing the
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// "get and increment" operations from interleaving. If the lock were not
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// used, both worklets would likely read 0 and set the value to 1.
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let select_url_result1 = await worklet1.selectURL(
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"get-wait-increment-within-lock", [{url: url1_0}, {url: url1_1}],
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{data: {'key': 'key'}, resolveToConfig: true});
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let select_url_result2 = await worklet2.selectURL(
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"get-wait-increment-within-lock", [{url: url2_0}, {url: url2_1}],
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{data: {'key': 'key'}, resolveToConfig: true});
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attachFencedFrame(select_url_result1, 'opaque-ads');
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const result1 = await nextValueFromServer(ancestor_key1);
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assert_equals(result1, "frame1_loaded");
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attachFencedFrame(select_url_result2, 'opaque-ads');
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const result2 = await nextValueFromServer(ancestor_key2);
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assert_equals(result2, "frame1_loaded");
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await verifyKeyValueForOrigin('key', '2', location.origin);
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await deleteKeyForOrigin('key', location.origin);
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}, 'Basic test for Web Locks API in the shared storage worklet');
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</script>
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</body>
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