gecko-dev/dom/indexedDB/test/unit/test_unexpectedDirectory.js

/**
 * Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

function getTestingFiles()
{
  const filenameBase = "unexpectedDirectory";
  let baseDir = getRelativeFile("storage/permanent/chrome/idb");

  let unexpectedDirWithoutSuffix = baseDir.clone();
  unexpectedDirWithoutSuffix.append(filenameBase);

  let unexpectedDir = baseDir.clone();
  unexpectedDir.append(filenameBase + ".files");

  return {unexpectedDirWithoutSuffix, unexpectedDir};
}

function createTestingEnvironment()
{
  let testingFiles = getTestingFiles();
  testingFiles.unexpectedDir.create(Ci.nsIFile.DIRECTORY_TYPE,
                                    parseInt("0755", 8));

  testingFiles.unexpectedDirWithoutSuffix.create(Ci.nsIFile.DIRECTORY_TYPE,
                                                 parseInt("0755", 8));
}

/**
 * This test verifies unexpected directories won't block idb's initialization.
 */

async function testSteps()
{
  info("Verifying open shouldn't be blocked by unexpected files");

  createTestingEnvironment();

  let request =
    indexedDB.open(this.window ? window.location.pathname : "Splendid Test", 1);
  await expectingUpgrade(request);

  // Waiting for a success event for indexedDB.open()
  let event = await expectingSuccess(request);

  let testingFiles = getTestingFiles();
  ok(!testingFiles.unexpectedDir.exists(),
     "The unexpected directory doesn't exist");
  ok(!testingFiles.unexpectedDirWithoutSuffix.exists(),
     "The unexpected directory without the suffix doesn't exist");

  let db = event.target.result;
  db.close();
}