if (this.importScripts) {
    importScripts('../../../resources/js-test.js');
    importScripts('shared.js');
}

description("Test that a deleteDatabase called while handling an upgradeneeded event is queued and fires its events at the right time. The close() call to unblock the delete occurs in the open request's 'success' event handler.");

function test()
{
    removeVendorPrefixes();
    setDBNameFromPath();

    request = evalAndLog("indexedDB.deleteDatabase(dbname)");
    request.onsuccess = initiallyDeleted;
    request.onerror = unexpectedErrorCallback;
}

var sawUpgradeNeeded = false;
var sawVersionChange = false;
var sawDeleteBlocked = false;

function initiallyDeleted(evt) {
    preamble(evt);
    evalAndLog("request = indexedDB.open(dbname, 1)");
    request.onupgradeneeded = upgradeNeededCallback;
    request.onsuccess = openSuccess;
    request.onerror = unexpectedErrorCallback;
}

function upgradeNeededCallback(evt)
{
    preamble(evt);
    shouldBeFalse("sawUpgradeNeeded");
    evalAndLog("sawUpgradeNeeded = true");
    shouldBe("event.oldVersion", "0");
    shouldBe("event.newVersion", "1");

    evalAndLog("db = event.target.result");
    db.onversionchange = versionChangeCallback;
    request2 = evalAndLog("deleteRequest = indexedDB.deleteDatabase(dbname)");
    evalAndLog("request2.onsuccess = deleteSuccessCallback");
    request2.onerror = unexpectedErrorCallback;
    request2.onblocked = deleteBlockedCallback;
}

function openSuccess(evt)
{
    preamble(evt);
    shouldBeTrue("sawUpgradeNeeded");
    evalAndLog("db = event.target.result");
    shouldBe('db.version', '1');
    evalAndLog("db.close()");
}

function versionChangeCallback(evt)
{
    preamble(evt);
    shouldBe("event.oldVersion", "1");
    shouldBeNull("event.newVersion");
    evalAndLog("sawVersionChange = true");
}

function deleteBlockedCallback(evt)
{
    if (!sawVersionChange)
        debug("deleteBlockedCallback was called *before* versionChangeCallback, which is wrong");
    eval("sawDeleteBlocked = true");
}

function deleteSuccessCallback(evt)
{
    preamble(evt);
    shouldBeTrue("sawVersionChange");
    shouldBeTrue("sawDeleteBlocked");
    finishJSTest();
}

test();