The Tor Browser: dom/indexedDB/test/webapp_clearBrowserData

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 <!--

     2   Any copyright is dedicated to the Public Domain.

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

     4 -->

     5 <html>

     6 <head>

     7   <title>Indexed Database Clear Browser Data Test</title>

     9   <script type="text/javascript;version=1.7">

    10     "use strict";

    12     function ok(cond, message)

    13     {

    14       alert(JSON.stringify({ type: "ok",

    15                              args: [!!cond, "browserFrame: " + message] }));

    16     }

    18     function info(message)

    19     {

    20       alert(JSON.stringify({ type: "info",

    21                              args: ["browserFrame: " + message] }));

    22     }

    24     function block()

    25     {

    26       info("about to block");

    28       // This will block until the parent has cleared our database.

    29       alert(JSON.stringify({ type: "block" }));

    31       info("unblocked");

    32     }

    34     function finish()

    35     {

    36       alert(JSON.stringify({ type: "done" }));

    37     }

    39     window.onerror = ok.bind(window, false);

    41     function testSteps()

    42     {

    43       const objectStoreName = "foo";

    44       const testKey = 1;

    45       const testValue = objectStoreName;

    46       const dbName = window.location.pathname + window.location.search;

    48       let request = indexedDB.open(dbName, 1);

    49       request.onerror = errorHandler;

    50       request.onupgradeneeded = grabEventAndContinueHandler;

    51       request.onsuccess = unexpectedSuccessHandler;

    52       let event = yield undefined;

    54       let db = event.target.result;

    55       db.onerror = errorHandler;

    56       db.onversionchange = function(event) {

    57         event.target.close();

    58       }

    60       let objectStore = db.createObjectStore(objectStoreName);

    61       objectStore.add(testValue, testKey);

    63       request.onsuccess = grabEventAndContinueHandler;

    64       event = yield undefined;

    66       ok(db === event.target.result, "created database");

    68       objectStore =

    69         db.transaction(objectStoreName).objectStore(objectStoreName);

    70       objectStore.get(testKey).onsuccess = grabEventAndContinueHandler;

    71       event = yield undefined;

    73       ok(testValue == event.target.result, "data exists");

    75       block();

    77       request = indexedDB.open(dbName, 1);

    78       request.onerror = errorHandler;

    79       request.onupgradeneeded = grabEventAndContinueHandler;

    80       request.onsuccess = unexpectedSuccessHandler;

    81       event = yield undefined;

    83       ok(event.type == "upgradeneeded", "db doesn't exist");

    85       request.onsuccess = grabEventAndContinueHandler;

    86       event = yield undefined;

    88       db = event.target.result;

    89       info(db.objectStoreNames.length);

    90       ok(!db.objectStoreNames.length, "no object stores");

    92       finish();

    94       yield undefined;

    95     }

    97   </script>

    99   <script type="text/javascript;version=1.7" src="helpers.js"></script>

   100 </head>

   102 <body onload="testGenerator.next();"></body>

   104 </html>

The Tor Browser / file revision