PerformanceTests/IndexedDB/basic/index-multientry.html

<!DOCTYPE html>
<html>
<body>
<script src="../../resources/runner.js"></script>
<script>

const numberOfIterations = 20;

// Delete all databases for the test ahead of time.
var numberDeleted = 0;
var databaseNamePrefix = "index-multientry-DB-";
for (var i = 0; i < numberOfIterations + 1; ++i) {
    req = indexedDB.deleteDatabase(databaseNamePrefix + i);
    req.onsuccess = function() {
        if (++numberDeleted == numberOfIterations)
            startIteration();
    }
}

var testGenerator = null;
var db = null;
var transaction = null;
var currentIteration = 0;

PerfTestRunner.prepareToMeasureValuesAsync({
    customIterationCount: numberOfIterations,
    unit: 'ms',
    done: function () {
        transaction = null;
        db = null;
        testGenerator = null;
        PerfTestRunner.gc();
        ++currentIteration;
    }
});

function startIteration()
{
    testGenerator = runIteration();
    nextStep();
}

function nextStep()
{
    testGenerator.next();
}

var object = { test: 'yo', indexKeys: [] };
for (var i = 0; i < 5000; i++)
    object.indexKeys.push('index_no_' + i);

function *runIteration()
{
    var startTime = PerfTestRunner.now();

    var openRequest = indexedDB.open(databaseNamePrefix + currentIteration);
    openRequest.onupgradeneeded = function(event) {
        db = event.target.result;
        db.createObjectStore('store').createIndex('index', 'indexKeys', { multiEntry: true });
    }
    openRequest.onsuccess = nextStep;

    yield;

    transaction = db.transaction('store', 'readwrite');
    transaction.objectStore('store').put(object, 1);
    transaction.oncomplete = nextStep;

    yield;

    var index = db.transaction('store').objectStore('store').index('index');

    var completedGets = 0;
    for (var i = 0; i < 1000; i++)
    {
        index.get('index_no_' + i).onsuccess = function (event) {
            if (event.target.result.test != "yo")
                alert("Expected 'yo', got '" + event.target.result.test + "'");

            if (++completedGets == 1000)
                nextStep();
        };
    }

    yield;

    if (!PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime))
        return;

    setTimeout(startIteration, 0);
}
</script>
</body>
</html>