test_deleteDatabase.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";

  ok(indexedDB.deleteDatabase, "deleteDatabase function should exist!");

  let request = indexedDB.open(name, 10);

  request.onerror = errorHandler;

  request.onsuccess = unexpectedSuccessHandler;

  request.onupgradeneeded = grabEventAndContinueHandler;

  ok(request instanceof IDBOpenDBRequest, "Expect an IDBOpenDBRequest");

  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.createObjectStore("stuff");

  request.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

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

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

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

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

  request = indexedDB.open(name, 10);

  request.onerror = errorHandler;

  request.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

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

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

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

  let db2 = event.target.result;

  is(db2.objectStoreNames.length, 1, "Expect an objectStore here");

  var onversionchangecalled = false;

  function closeDBs(event) {

    onversionchangecalled = true;

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

    is(event.oldVersion, 10, "oldVersion should be 10");

    ok(event.newVersion === null, "newVersion should be null");

    ok(!(event.newVersion === undefined), "newVersion should be null");

    ok(!(event.newVersion === 0), "newVersion should be null");

    db.close();

    db2.close();

    db.onversionchange = unexpectedSuccessHandler;

    db2.onversionchange = unexpectedSuccessHandler;

  // The IDB spec doesn't guarantee the order that onversionchange will fire

  // on the dbs.

  db.onversionchange = closeDBs;

  db2.onversionchange = closeDBs;

  request = indexedDB.deleteDatabase(name);

  request.onerror = errorHandler;

  request.onsuccess = grabEventAndContinueHandler;

  ok(request instanceof IDBOpenDBRequest, "Expect an IDBOpenDBRequest");

  event = yield undefined;

  ok(onversionchangecalled, "Expected versionchange events");

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

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

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

  request = indexedDB.open(name, 1);

  request.onerror = errorHandler;

  request.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

  is(event.target.result.version, 1, "DB has proper version");

is(

    event.target.result.objectStoreNames.length,

0,

    "DB should have no object stores"

);

  request = indexedDB.deleteDatabase("thisDatabaseHadBetterNotExist");

  request.onerror = errorHandler;

  request.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

  ok(true, "deleteDatabase on a non-existent database succeeded");

  request = indexedDB.open("thisDatabaseHadBetterNotExist");

  request.onerror = errorHandler;

  request.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

  ok(true, "after deleting a non-existent database, open should work");

  finishTest();