test_traffic_jam.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";

  let requests = [];

  function doOpen(

    version,

    errorCallback,

    upgradeNeededCallback,

    successCallback

) {

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

    request.onerror = errorCallback;

    request.onupgradeneeded = upgradeNeededCallback;

    request.onsuccess = successCallback;

    requests.push(request);

  doOpen(

1,

    errorHandler,

    grabEventAndContinueHandler,

    grabEventAndContinueHandler

);

  doOpen(2, errorHandler, unexpectedSuccessHandler, unexpectedSuccessHandler);

  let event = yield undefined;

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

  is(event.target, requests[0], "fired at the right request");

  let db = event.target.result;

  db.createObjectStore("foo");

  doOpen(3, errorHandler, unexpectedSuccessHandler, unexpectedSuccessHandler);

  doOpen(2, errorHandler, unexpectedSuccessHandler, unexpectedSuccessHandler);

  doOpen(3, errorHandler, unexpectedSuccessHandler, unexpectedSuccessHandler);

  event.target.transaction.oncomplete = grabEventAndContinueHandler;

  event = yield undefined;

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

is(

    event.target,

    requests[0].transaction,

    "expect it to be fired at the transaction"

);

  event = yield undefined;

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

  is(event.target, requests[0], "fired at the right request");

  event.target.result.close();

  requests[1].onupgradeneeded = grabEventAndContinueHandler;

  event = yield undefined;

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

  is(event.target, requests[1], "fired at the right request");

  requests[1].onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

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

  is(event.target, requests[1], "fired at the right request");

  event.target.result.close();

  requests[2].onupgradeneeded = grabEventAndContinueHandler;

  event = yield undefined;

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

  is(event.target, requests[2], "fired at the right request");

  requests[2].onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

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

  is(event.target, requests[2], "fired at the right request");

  event.target.result.close();

  requests[3].onerror = null;

  requests[3].addEventListener("error", new ExpectError("VersionError", true));

  event = yield undefined;

  requests[4].onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

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

  is(event.target, requests[4], "fired at the right request");

  event.target.result.close();

  finishTest();