зеркало из https://github.com/mozilla/gecko-dev.git
91 строка
2.4 KiB
JavaScript
91 строка
2.4 KiB
JavaScript
/**
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* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/
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*/
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var testGenerator = testSteps();
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function testSteps()
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{
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const name = this.window ? window.location.pathname : "Splendid Test";
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const description = "My Test Database";
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let request = mozIndexedDB.open(name, 1, description);
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request.onerror = errorHandler;
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request.onupgradeneeded = grabEventAndContinueHandler;
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request.onsuccess = grabEventAndContinueHandler;
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let event = yield;
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let db = event.target.result;
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is(event.target.transaction.mode, "versionchange", "Correct mode");
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let objectStore = db.createObjectStore("foo", { autoIncrement: true });
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request = objectStore.add({});
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request.onerror = errorHandler;
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request.onsuccess = grabEventAndContinueHandler;
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event = yield;
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let key = event.target.result;
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ok(key, "Got a key");
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yield;
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let continueReading = true;
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let readerCount = 0;
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let callbackCount = 0;
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let finalCallbackCount = 0;
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// Generate a bunch of reads right away without returning to the event
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// loop.
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for (let i = 0; i < 20; i++) {
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readerCount++;
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request = db.transaction("foo").objectStore("foo").get(key);
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request.onerror = errorHandler;
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request.onsuccess = function(event) {
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callbackCount++;
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};
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}
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while (continueReading) {
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readerCount++;
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request = db.transaction("foo").objectStore("foo").get(key);
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request.onerror = errorHandler;
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request.onsuccess = function(event) {
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is(event.target.transaction.mode, "readonly", "Correct mode");
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callbackCount++;
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if (callbackCount == 100) {
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request = db.transaction("foo", "readwrite")
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.objectStore("foo")
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.add({}, readerCount);
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request.onerror = errorHandler;
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request.onsuccess = function(event) {
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continueReading = false;
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finalCallbackCount = callbackCount;
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is(event.target.result, callbackCount,
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"write callback came before later reads");
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}
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}
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};
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executeSoon(function() { testGenerator.next(); });
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yield;
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}
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while (callbackCount < readerCount) {
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executeSoon(function() { testGenerator.next(); });
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yield;
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}
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is(callbackCount, readerCount, "All requests accounted for");
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ok(callbackCount > finalCallbackCount, "More readers after writer");
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finishTest();
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yield;
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}
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if (this.window)
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SimpleTest.requestLongerTimeout(5); // see bug 580875
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