content/test/data/indexeddb/corrupted_open_db_detection.html

   1 <!DOCTYPE html>
   2 <html>
   3 <!--
   4   Copyright 2014 The Chromium Authors. All rights reserved.
   5   Use of this source code is governed by a BSD-style license that can be
   6   found in the LICENSE file.
   7 -->
   8 <head>
   9 <title>IDB test that db's corrupted while open are properly handled Part 1 / 2</title>
  10 <script type="text/javascript" src="common.js"></script>
  11 <script>
  12
  13 var testType = 'get';
  14
  15 function test() {
  16   testType = location.hash.substring(1);
  17   if (testType == 'testCommon') {
  18     fail('"testCommon" is a reserved test name');
  19     return;
  20   }
  21   indexedDBTest(upgradeCallback, openCallback);
  22 }
  23
  24 var numObjectsWrittenToDb = 5;
  25 var numTransactions = 0;
  26 var numTransactionErrors = 0;
  27 var numTransactionAborts = 0;
  28 var numKeys = 0;
  29 var transaction;
  30 var request;
  31 var db;
  32 var objectStore;
  33
  34 function upgradeCallback() {
  35   db = event.target.result;
  36   deleteAllObjectStores(db);
  37   objectStore = db.createObjectStore('storeName', { autoIncrement : true });
  38
  39   var i;
  40   var len = 80;
  41   var data = Array(len);
  42   for (i = 0; i < len; ++i) {
  43     data[i] = i;
  44   }
  45
  46   for (i = 0; i < numObjectsWrittenToDb; ++i) {
  47     var key = 'key-' + i;
  48     request = objectStore.add(data, key);
  49     request.onerror = unexpectedErrorCallback;
  50     request.onsuccess = upgradeTransactionComplete;
  51   }
  52 }
  53
  54 function upgradeTransactionComplete() {
  55   ++numTransactions;
  56   if (numTransactions === numObjectsWrittenToDb) {
  57     debug("All transactions written");
  58   }
  59 }
  60
  61 function transactionError(event) {
  62   if (event.target.error) {
  63     numTransactionErrors += 1;
  64   } else {
  65     fail("Transaction onerror had no error");
  66   }
  67 }
  68
  69 function transactionAbort(event) {
  70   if (event.target.error) {
  71     numTransactionAborts += 1;
  72   } else {
  73     fail("Transaction onabort had no error");
  74   }
  75 }
  76
  77 function requestError(event) {
  78   if (!event.target.error) {
  79     fail("get request had no/invalid error");
  80   }
  81 }
  82
  83 function databaseClosed(event) {
  84   shouldBe("numTransactionErrors", "1");
  85   shouldBe("numTransactionAborts", "1");
  86
  87   done("Closed as expected");
  88 }
  89
  90 function testXhr(url, onSuccess) {
  91   var xmlhttp = new window.XMLHttpRequest();
  92   xmlhttp.open("GET", url, /*async=*/false);
  93   xmlhttp.onreadystatechange = function() {
  94       if (xmlhttp.readyState === 4) {
  95         if (xmlhttp.status === 200) {
  96           onSuccess()
  97         }
  98       }
  99     };
 100   xmlhttp.send();
 101 }
 102
 103 var tests = {
 104   // Common setup tasks for the other tests in this object
 105   testCommon: function(mode) {
 106     transaction = db.transaction('storeName', mode);
 107     db.onclose = databaseClosed;
 108     transaction.onabort = transactionAbort;
 109     transaction.onerror = transactionError;
 110     objectStore = transaction.objectStore('storeName');
 111   },
 112   get: function() {
 113     testXhr("/corrupt/test/fail?class=LevelDBTransaction&method=Get&instNum=1",
 114             function() {
 115       tests.testCommon('readonly');
 116       request = objectStore.get('key-0');
 117       request.onsuccess = unexpectedSuccessCallback;
 118       request.onerror = requestError;
 119     });
 120   },
 121   failTransactionCommit: function() {
 122     tests.testCommon('readwrite');
 123     db.onclose = function(event) {
 124       shouldBe("numTransactionErrors", "0");
 125       shouldBe("numTransactionAborts", "1");
 126
 127       done("Closed as expected");
 128     };
 129     testXhr("/corrupt/test/fail?class=LevelDBTransaction&method=Commit", function() {
 130       request = objectStore.put("Any Value", 'key-0');
 131       request.onerror = requestError;
 132     });
 133   },
 134   failWebkitGetDatabaseNames: function() {
 135     tests.testCommon('readonly');
 136     gotRequestError = 0;
 137     db.onclose = function(event) {
 138       shouldBe("numTransactionErrors", "0");
 139       shouldBe("numTransactionAborts", "1");
 140       shouldBe("gotRequestError", "1");
 141
 142       done("Closed as expected");
 143     };
 144     testXhr("/corrupt/test/fail?class=LevelDBIterator&method=Seek", function() {
 145       request = window.indexedDB.webkitGetDatabaseNames();
 146       request.onsuccess = unexpectedSuccessCallback;
 147       request.onerror = function(evt) {
 148         gotRequestError += 1;
 149       };
 150     });
 151   },
 152   iterate: function() {
 153     testXhr("/corrupt/test/corruptdb?storeName", function() {
 154       tests.testCommon('readonly');
 155       request = objectStore.openCursor();
 156       request.onerror = requestError;
 157       request.onsuccess = function (event){
 158         var cursor = request.result;
 159         if (cursor) {
 160           // Get an object. Probably shouldn't get this far, but won't call this an error.
 161           cursor.continue();
 162         } else {
 163           // Got the last object. We shouldn't get this far.
 164           fail("Should *not* have been able to iterate over database.");
 165         }
 166       };
 167     });
 168   },
 169   failGetBlobJournal: function() {
 170     // Get() #1 is the put (GetNewVersionNumber)
 171     // Get() #2 is the blob key generator (GetBlobKeyGeneratorCurrentNumber)
 172     // Get() #3 is the journal (GetPrimaryBlobJournal)
 173     testXhr("/corrupt/test/fail?class=LevelDBTransaction&method=Get&instNum=3", function() {
 174       tests.testCommon('readwrite');
 175       request = objectStore.put({blob: new Blob(['abc'])}, 'key-0');
 176       request.onerror = requestError;
 177       db.onclose = function databaseClosed(event) {
 178         shouldBe("numTransactionErrors", "0");
 179         shouldBe("numTransactionAborts", "1");
 180
 181         done("Closed as expected");
 182       };
 183     });
 184   },
 185   clearObjectStore: function() {
 186     testXhr("/corrupt/test/corruptdb?storeName", function() {
 187       tests.testCommon('readwrite');
 188       request = objectStore.clear();
 189       request.onerror = requestError;
 190       request.onsuccess = unexpectedSuccessCallback
 191     });
 192   }
 193 };
 194
 195 function openCallback() {
 196   if (testType in tests)
 197     tests[testType]();
 198   else
 199     fail('Unknown test: "' + testType + '"');
 200 }
 201
 202 </script>
 203 </head>
 204 <body onLoad="test()">
 205 <div id="status">Starting...</div>
 206 </body>
 207 </html>