зеркало из https://github.com/mozilla/gecko-dev.git
64 строки
2.1 KiB
HTML
64 строки
2.1 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<title>IndexedDB: open and delete requests are processed as a FIFO queue</title>
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<link rel="help" href="https://w3c.github.io/IndexedDB/#request-connection-queue">
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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="support.js"></script>
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<script>
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async_test(t => {
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let db_name = 'db' + self.location.pathname + '-' + t.name;
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indexedDB.deleteDatabase(db_name);
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// Open and hold connection while other requests are queued up.
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let r = indexedDB.open(db_name, 1);
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r.onerror = t.unreached_func('open should succeed');
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r.onsuccess = t.step_func(e => {
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let db = r.result;
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let saw = expect(t, [
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'open1 success',
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'open1 versionchange',
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'delete1 blocked',
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'delete1 success',
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'open2 success',
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'open2 versionchange',
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'delete2 blocked',
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'delete2 success'
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]);
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function open(token, version) {
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let r = indexedDB.open(db_name, version);
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r.onsuccess = t.step_func(e => {
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saw(token + ' success');
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let db = r.result;
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db.onversionchange = t.step_func(e => {
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saw(token + ' versionchange');
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setTimeout(t.step_func(() => db.close()), 0);
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});
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});
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r.onblocked = t.step_func(e => saw(token + ' blocked'));
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r.onerror = t.unreached_func('open should succeed');
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}
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function deleteDatabase(token) {
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let r = indexedDB.deleteDatabase(db_name);
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r.onsuccess = t.step_func(e => saw(token + ' success'));
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r.onblocked = t.step_func(e => saw(token + ' blocked'));
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r.onerror = t.unreached_func('deleteDatabase should succeed');
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}
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open('open1', 2);
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deleteDatabase('delete1');
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open('open2', 3);
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deleteDatabase('delete2');
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// Now unblock the queue.
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db.close();
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});
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}, 'Opens and deletes are processed in order');
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</script>
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