test_deleteDatabase_onblocked.js

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/**

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/

*/

/* exported testGenerator */

var testGenerator = testSteps();

function* testSteps() {

  const name = this.window ? window.location.pathname : "Splendid Test";

  const dbVersion = 10;

  let openRequest = indexedDB.open(name, dbVersion);

  openRequest.onerror = errorHandler;

  openRequest.onblocked = errorHandler;

  openRequest.onsuccess = unexpectedSuccessHandler;

  openRequest.onupgradeneeded = grabEventAndContinueHandler;

  let event = yield undefined;

  is(event.type, "upgradeneeded", "Expect an upgradeneeded event");

  ok(event instanceof IDBVersionChangeEvent, "Expect a versionchange event");

  let db = event.target.result;

  db.onversionchange = errorHandler;

  db.createObjectStore("stuff");

  openRequest.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

  is(event.type, "success", "Expect a success event");

  is(event.target, openRequest, "Event has right target");

  ok(event.target.result instanceof IDBDatabase, "Result should be a database");

  is(db.objectStoreNames.length, 1, "Expect an objectStore here");

  db.onversionchange = grabEventAndContinueHandler;

  let deletingRequest = indexedDB.deleteDatabase(name);

  deletingRequest.onerror = errorHandler;

  deletingRequest.onsuccess = errorHandler;

  deletingRequest.onblocked = errorHandler;

  event = yield undefined;

  is(event.type, "versionchange", "Expect an versionchange event");

  is(event.target, db, "Event has right target");

  ok(event instanceof IDBVersionChangeEvent, "Expect a versionchange event");

  is(event.oldVersion, dbVersion, "Correct old version");

  is(event.newVersion, null, "Correct new version");

  deletingRequest.onblocked = grabEventAndContinueHandler;

  event = yield undefined;

  is(event.type, "blocked", "Expect an blocked event");

  is(event.target, deletingRequest, "Event has right target");

  ok(event instanceof IDBVersionChangeEvent, "Expect a versionchange event");

  is(event.oldVersion, dbVersion, "Correct old version");

  is(event.newVersion, null, "Correct new version");

  // Bug-2006245 - Ensure indexedDB.databases() works as expected along with other IDBFactory

  // operations on other databases while deleteDatabase is blocked.

  // Also make sure that the databases() function are resolved in order and that's why we are

  // creating two such requests below.

  let databasePromise1Resolved = false;

  let databasesPromise1 = indexedDB.databases();

  databasesPromise1.then(

    () => {

      databasePromise1Resolved = true;

},

    function (error) {

      ok(false, "databases() rejected: " + error);

      finishTest();

);

  let databasesPromise2 = indexedDB.databases();

  databasesPromise2.then(

    infos => {

ok(

        databasePromise1Resolved,

        "databases() promises should be resolved in order"

);

      grabEventAndContinueHandler(infos);

},

    function (error) {

      ok(false, "databases() rejected: " + error);

      finishTest();

);

  let databaseInfos = yield undefined;

ok(

    databaseInfos.some(info => info.name === name),

    "databases() should resolve while deleteDatabase is blocked"

);

  const otherName = name + "-other";

  openRequest = indexedDB.open(otherName, 1);

  openRequest.onerror = errorHandler;

  openRequest.onblocked = errorHandler;

  openRequest.onsuccess = unexpectedSuccessHandler;

  openRequest.onupgradeneeded = grabEventAndContinueHandler;

  event = yield undefined;

  is(event.type, "upgradeneeded", "Expect an upgradeneeded event");

  ok(event instanceof IDBVersionChangeEvent, "Expect a versionchange event");

  let otherDb = event.target.result;

  otherDb.createObjectStore("stuff");

  openRequest.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

  is(event.type, "success", "Expect a success event");

  is(event.target, openRequest, "Event has right target");

  ok(event.target.result instanceof IDBDatabase, "Result should be a database");

  otherDb.close();

  deletingRequest.onsuccess = grabEventAndContinueHandler;

  db.close();

  event = yield undefined;

  is(event.type, "success", "expect a success event");

  is(event.target, deletingRequest, "event has right target");

  is(event.target.result, undefined, "event should have no result");

  openRequest = indexedDB.open(name, 1);

  openRequest.onerror = errorHandler;

  openRequest.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

  db = event.target.result;

  is(db.version, 1, "DB has proper version");

  is(db.objectStoreNames.length, 0, "DB should have no object stores");

  db.close();

  finishTest();