test_file_os_delete.html

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<!--

  Any copyright is dedicated to the Public Domain.

  http://creativecommons.org/publicdomain/zero/1.0/

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<html>

<head>

  <title>Indexed Database Property Test</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

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

  <script type="text/javascript">

  function* testSteps()

    const READ_WRITE = "readwrite";

    const name = window.location.pathname;

    const objectStoreName = "Blobs";

    getCurrentUsage(grabFileUsageAndContinueHandler);

    let startUsage = yield undefined;

    const fileData1 = {

      key: 1,

      obj: { id: 1, file: getRandomFile("random.bin", 100000) },

};

    const fileData2 = {

      key: 2,

      obj: { id: 1, file: getRandomFile("random.bin", 100000) },

};

    SpecialPowers.pushPrefEnv({ set: [["dom.indexedDB.dataThreshold", -1]] },

                              continueToNextStep);

    yield undefined;

      let request = indexedDB.open(name, 1);

      request.onerror = errorHandler;

      request.onupgradeneeded = grabEventAndContinueHandler;

      request.onsuccess = grabEventAndContinueHandler;

      let event = yield undefined;

      is(event.type, "upgradeneeded", "Got correct event type");

      let db = event.target.result;

      db.onerror = errorHandler;

      let objectStore = db.createObjectStore(objectStoreName, { });

      objectStore.createIndex("index", "id", { unique: true });

      objectStore.add(fileData1.obj, fileData1.key);

      request = objectStore.add(fileData2.obj, fileData2.key);

      request.addEventListener("error", new ExpectError("ConstraintError", true));

      request.onsuccess = unexpectedSuccessHandler;

      yield undefined;

      event = yield undefined;

      is(event.type, "success", "Got correct event type");

      getCurrentUsage(grabFileUsageAndContinueHandler);

      let originalUsage = yield undefined;

      // FIXME This might not work in private browsing mode because of the

      // encryption overhead. We need to decide how to handle that. We might

      // change the usage reporting to remove the overhead.

      is(originalUsage, startUsage + fileData1.obj.file.size + fileData2.obj.file.size,

         "Correct file usage");

      let trans = db.transaction([objectStoreName], READ_WRITE);

      trans.objectStore(objectStoreName).delete(fileData1.key);

      trans.oncomplete = grabEventAndContinueHandler;

      event = yield undefined;

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

      getCurrentUsage(grabFileUsageAndContinueHandler);

      let usage = yield undefined;

      is(usage, originalUsage, "OS files exists");

      fileData1.obj.file = null;

      fileData2.obj.file = null;

    scheduleGC();

    yield undefined;

    // Flush pending file deletions before checking usage.

    flushPendingFileDeletions();

    yield* assertEventuallyWithGC(

      function* () {

        getCurrentUsage(grabFileUsageAndContinueHandler);

        let endUsage = yield undefined;

        return endUsage == startUsage;

},

      "OS files deleted"

);

    finishTest();

  </script>

  <script type="text/javascript" src="file.js"></script>

  <script type="text/javascript" src="helpers.js"></script>

</head>

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

</html>