dom/file/test/test_truncate.html
author Tim Taubert <ttaubert@mozilla.com>
Wed, 10 Jul 2013 23:52:35 +0200
changeset 150375 c6ecfbeb6553f84a823f2d1f23b126df18bce952
parent 99756 deae92fe42b26a730775e8c343897172d6b014a4
permissions -rw-r--r--
Bug 891806 - part 4 - replace 'yield;' with 'yield undefined;' in dom/; r=smaug

<!--
  Any copyright is dedicated to the Public Domain.
  http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
  <title>File Handle Test</title>

  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

  <script type="text/javascript;version=1.7">
  function testSteps()
  {
    var testBuffer = getRandomBuffer(100000);

    for each (let fileStorage in fileStorages) {
      let request = getFileHandle(fileStorage.key, "test.bin");
      request.onerror = errorHandler;
      request.onsuccess = grabEventAndContinueHandler;
      let event = yield undefined;

      let fileHandle = event.target.result;
      fileHandle.onerror = errorHandler;

      let lockedFile = fileHandle.open("readwrite");
      request = lockedFile.write(testBuffer);
      request.onsuccess = grabEventAndContinueHandler;
      event = yield undefined;

      is(lockedFile.location, 100000, "Correct location");

      for (let i = 0; i < 10; i++) {
        let location = lockedFile.location - 10000;
        lockedFile.location = location;

        request = lockedFile.truncate();
        request.onsuccess = grabEventAndContinueHandler;
        event = yield undefined;

        is(lockedFile.location, location, "Correct location");

        request = lockedFile.getMetadata({ size: true });
        request.onsuccess = grabEventAndContinueHandler;
        event = yield undefined;

        is(event.target.result.size, location, "Correct size");
      }

      request = lockedFile.write(testBuffer);
      request.onsuccess = grabEventAndContinueHandler;
      event = yield undefined;

      let location = lockedFile.location;
      for (let i = 0; i < 10; i++) {
        location -= 10000;

        request = lockedFile.truncate(location);
        request.onsuccess = grabEventAndContinueHandler;
        event = yield undefined;

        is(lockedFile.location, location, "Correct location");

        request = lockedFile.getMetadata({ size: true });
        request.onsuccess = grabEventAndContinueHandler;
        event = yield undefined;

        is(event.target.result.size, location, "Correct size");
      }
    }

    finishTest();
    yield undefined;
  }
  </script>
  <script type="text/javascript;version=1.7" src="helpers.js"></script>

</head>

<body onload="runTest();"></body>

</html>