The Tor Browser: dom/indexedDB/test/unit/test_index_update

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  */

     6 var testGenerator = testSteps();

     8 function testSteps()

9 {

    10   let name = this.window ? window.location.pathname : "Splendid Test";

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

    12   request.onerror = errorHandler;

    13   request.onupgradeneeded = grabEventAndContinueHandler;

    14   request.onsuccess = grabEventAndContinueHandler;

    16   let event = yield undefined;

    18   let db = event.target.result;

    19   db.onerror = errorHandler;

    21   for each (let autoIncrement in [false, true]) {

    22     let objectStore =

    23       db.createObjectStore(autoIncrement, { keyPath: "id",

    24                                             autoIncrement: autoIncrement });

    26     for (let i = 0; i < 10; i++) {

    27       objectStore.add({ id: i, index: i });

    28     }

    30     for each (let unique in [false, true]) {

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

    32     }

    34     for (let i = 10; i < 20; i++) {

    35       objectStore.add({ id: i, index: i });

    36     }

    37   }

    39   event = yield undefined;

    40   is(event.type, "success", "expect a success event");

    42   for each (let autoIncrement in [false, true]) {

    43     let objectStore = db.transaction(autoIncrement)

    44                         .objectStore(autoIncrement);

    46     objectStore.count().onsuccess = grabEventAndContinueHandler;

    47     let event = yield undefined;

    49     is(event.target.result, 20, "Correct number of entries in objectStore");

    51     let objectStoreCount = event.target.result;

    52     let indexCount = event.target.result;

    54     for each (let unique in [false, true]) {

    55       let index = db.transaction(autoIncrement, "readwrite")

    56                     .objectStore(autoIncrement)

    57                     .index(unique);

    59       index.count().onsuccess = grabEventAndContinueHandler;

    60       let event = yield undefined;

    62       is(event.target.result, indexCount,

    63          "Correct number of entries in index");

    65       let modifiedEntry = unique ? 5 : 10;

    66       let keyRange = IDBKeyRange.only(modifiedEntry);

    68       let sawEntry = false;

    69       index.openCursor(keyRange).onsuccess = function(event) {

    70         let cursor = event.target.result;

    71         if (cursor) {

    72           sawEntry = true;

    73           is(cursor.key, modifiedEntry, "Correct key");

    75           cursor.value.index = unique ? 30 : 35;

    76           cursor.update(cursor.value).onsuccess = function(event) {

    77             cursor.continue();

    78           }

    79         }

    80         else {

    81           continueToNextStep();

    82         }

    83       }

    84       yield undefined;

    86       is(sawEntry, true, "Saw entry for key value " + modifiedEntry);

    88       // Recount index. Shouldn't change.

    89       index = db.transaction(autoIncrement, "readwrite")

    90                 .objectStore(autoIncrement)

    91                 .index(unique);

    93       index.count().onsuccess = grabEventAndContinueHandler;

    94       event = yield undefined;

    96       is(event.target.result, indexCount,

    97          "Correct number of entries in index");

    99       modifiedEntry = unique ? 30 : 35;

   100       keyRange = IDBKeyRange.only(modifiedEntry);

   102       sawEntry = false;

   103       index.openCursor(keyRange).onsuccess = function(event) {

   104         let cursor = event.target.result;

   105         if (cursor) {

   106           sawEntry = true;

   107           is(cursor.key, modifiedEntry, "Correct key");

   109           delete cursor.value.index;

   110           cursor.update(cursor.value).onsuccess = function(event) {

   111             indexCount--;

   112             cursor.continue();

   113           }

   114         }

   115         else {

   116           continueToNextStep();

   117         }

   118       }

   119       yield undefined;

   121       is(sawEntry, true, "Saw entry for key value " + modifiedEntry);

   123       // Recount objectStore. Should be unchanged.

   124       objectStore = db.transaction(autoIncrement, "readwrite")

   125                       .objectStore(autoIncrement);

   127       objectStore.count().onsuccess = grabEventAndContinueHandler;

   128       event = yield undefined;

   130       is(event.target.result, objectStoreCount,

   131          "Correct number of entries in objectStore");

   133       // Recount index. Should be one item less.

   134       index = objectStore.index(unique);

   136       index.count().onsuccess = grabEventAndContinueHandler;

   137       event = yield undefined;

   139       is(event.target.result, indexCount,

   140          "Correct number of entries in index");

   142       modifiedEntry = objectStoreCount - 1;

   144       objectStore.delete(modifiedEntry).onsuccess =

   145         grabEventAndContinueHandler;

   146       event = yield undefined;

   148       objectStoreCount--;

   149       indexCount--;

   151       objectStore.count().onsuccess = grabEventAndContinueHandler;

   152       event = yield undefined;

   154       is(event.target.result, objectStoreCount,

   155          "Correct number of entries in objectStore");

   157       index.count().onsuccess = grabEventAndContinueHandler;

   158       event = yield undefined;

   160       is(event.target.result, indexCount,

   161          "Correct number of entries in index");

   163       index = event = null; // Bug 943409 workaround.

   164     }

   165     objectStore = event = null; // Bug 943409 workaround.

   166   }

   168   finishTest();

   169   event = db = request = null; // Bug 943409 workaround.

   170   yield undefined;

   171 }

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