test_transaction_error.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 dbName = this.window

    ? window.location.pathname

    : "test_transaction_error";

  const dbVersion = 1;

  const objectStoreName = "foo";

  const data = {};

  const dataKey = 1;

  const expectedError = "ConstraintError";

  let request = indexedDB.open(dbName, dbVersion);

  request.onerror = errorHandler;

  request.onupgradeneeded = grabEventAndContinueHandler;

  request.onsuccess = unexpectedSuccessHandler;

  let event = yield undefined;

  info("Creating database");

  let db = event.target.result;

  let objectStore = db.createObjectStore(objectStoreName);

  objectStore.add(data, dataKey);

  request.onupgradeneeded = unexpectedSuccessHandler;

  request.onsuccess = grabEventAndContinueHandler;

  event = yield undefined;

  db = event.target.result;

  try {

    db.transaction(objectStoreName, "versionchange");

    ok(false, "TypeError shall be thrown if transaction mode is wrong.");

  } catch (e) {

    ok(e instanceof TypeError, "got a database exception");

    is(e.name, "TypeError", "correct error");

  let transaction = db.transaction(objectStoreName, "readwrite");

  transaction.onerror = grabEventAndContinueHandler;

  transaction.oncomplete = grabEventAndContinueHandler;

  objectStore = transaction.objectStore(objectStoreName);

  info("Adding duplicate entry with preventDefault()");

  request = objectStore.add(data, dataKey);

  request.onsuccess = unexpectedSuccessHandler;

  request.onerror = grabEventAndContinueHandler;

  event = yield undefined;

  is(event.type, "error", "Got an error event");

  is(event.target, request, "Error event targeted request");

  is(event.currentTarget, request, "Got request error first");

is(

    event.currentTarget.error.name,

    expectedError,

    "Request has correct error"

);

  event.preventDefault();

  event = yield undefined;

  is(event.type, "error", "Got an error event");

  is(event.target, request, "Error event targeted request");

  is(event.currentTarget, transaction, "Got transaction error second");

  is(event.currentTarget.error, null, "Transaction has null error");

  event = yield undefined;

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

  is(event.target, transaction, "Complete event targeted transaction");

is(

    event.currentTarget,

    transaction,

    "Complete event only targeted transaction"

);

  is(event.currentTarget.error, null, "Transaction has null error");

  // Try again without preventDefault().

  transaction = db.transaction(objectStoreName, "readwrite");

  transaction.onerror = grabEventAndContinueHandler;

  transaction.onabort = grabEventAndContinueHandler;

  objectStore = transaction.objectStore(objectStoreName);

  info("Adding duplicate entry without preventDefault()");

  request = objectStore.add(data, dataKey);

  request.onsuccess = unexpectedSuccessHandler;

  request.onerror = grabEventAndContinueHandler;

  event = yield undefined;

  is(event.type, "error", "Got an error event");

  is(event.target, request, "Error event targeted request");

  is(event.currentTarget, request, "Got request error first");

is(

    event.currentTarget.error.name,

    expectedError,

    "Request has correct error"

);

  event = yield undefined;

  is(event.type, "error", "Got an error event");

  is(event.target, request, "Error event targeted request");

  is(event.currentTarget, transaction, "Got transaction error second");

  is(event.currentTarget.error, null, "Transaction has null error");

  event = yield undefined;

  is(event.type, "abort", "Got an abort event");

  is(event.target, transaction, "Abort event targeted transaction");

  is(event.currentTarget, transaction, "Abort event only targeted transaction");

is(

    event.currentTarget.error.name,

    expectedError,

    "Transaction has correct error"

);

  finishTest();