test_file_delete.html

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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";

    const fileData1 = { key: 1, file: getRandomFile("random1.bin", 110000) };

    const fileData2 = { key: 2, file: getRandomFile("random2.bin", 120000) };

    const fileData3 = { key: 3, file: getRandomFile("random3.bin", 130000) };

    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.add(fileData1.file, fileData1.key);

      objectStore.add(fileData2.file, fileData2.key);

      objectStore.add(fileData3.file, fileData3.key);

      event = yield undefined;

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

      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");

      is(getFileDBRefCount(name, 1), 0, "Correct db ref count");

      fileData1.file = null;

      fileData2.file = null;

      fileData3.file = null;

    yield* assertEventuallyHasNoFileInfo(name, 1);

    yield* assertEventuallyHasFileInfo(name, 2);

    yield* assertEventuallyHasFileInfo(name, 3);

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

      request.onerror = errorHandler;

      request.onsuccess = grabEventAndContinueHandler;

      let event = yield undefined;

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

      let db = event.target.result;

      db.onerror = errorHandler;

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

      let objectStore = trans.objectStore(objectStoreName);

      request = objectStore.get(fileData2.key);

      request.onsuccess = grabEventAndContinueHandler;

      event = yield undefined;

      let result = event.target.result;

      ok(result, "Got result");

      objectStore.delete(fileData2.key);

      trans.oncomplete = grabEventAndContinueHandler;

      event = yield undefined;

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

      is(getFileDBRefCount(name, 2), 0, "Correct db ref count");

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

      objectStore = trans.objectStore(objectStoreName);

      objectStore.delete(fileData3.key);

      trans.oncomplete = grabEventAndContinueHandler;

      event = yield undefined;

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

      yield *assertEventuallyWithGC(() => -1 == getFileDBRefCount(name, 3),

                                    "Correct db ref count");

      event = null;

      result = null;

    yield* assertEventuallyHasNoFileInfo(name, 1);

    yield* assertEventuallyHasNoFileInfo(name, 2);

    yield* assertEventuallyHasNoFileInfo(name, 3);

    finishTest();

  </script>

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

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

</head>

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

</html>