<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <html> <head> <title>Indexed Database Property Test</title> <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <script type="text/javascript;version=1.7"> /** * Test that a put of a file-backed Blob/File whose backing file has been * deleted results in a failure of that put failure. * * In order to create a file-backed Blob and ensure that we actually try and * copy its contents (rather than triggering a reference-count increment), we * use two separate databases. This test is derived from * test_file_cross_database_copying.html. */ function testSteps() { const READ_WRITE = "readwrite"; const databaseInfo = [ { name: window.location.pathname + "1", source: true }, { name: window.location.pathname + "2", source: false } ]; const objectStoreName = "Blobs"; const fileData = { key: 1, file: getRandomFile("random.bin", 10000) }; SpecialPowers.pushPrefEnv({ set: [["dom.indexedDB.dataThreshold", -1]] }, continueToNextStep); yield undefined; // Open both databases, put the File in the source. let databases = []; for (let info of databaseInfo) { let request = indexedDB.open(info.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; // We don't expect any errors yet for either database, but will later on. db.onerror = errorHandler; let objectStore = db.createObjectStore(objectStoreName, { }); if (info.source) { objectStore.add(fileData.file, fileData.key); } event = yield undefined; is(event.type, "success", "Got correct event type"); databases.push(db); } // Get a reference to the file-backed File. let fileBackedFile; for (let db of databases.slice(0, 1)) { let request = db.transaction([objectStoreName]) .objectStore(objectStoreName).get(fileData.key); request.onsuccess = grabEventAndContinueHandler; event = yield undefined; let result = event.target.result; verifyBlob(result, fileData.file, 1); yield undefined; fileBackedFile = result; } // Delete the backing file... let fileFullPath = getFilePath(fileBackedFile); // (We want to chop off the profile root and the resulting path component // must not start with a directory separator.) let fileRelPath = fileFullPath.substring(fileFullPath.search(/[/\\]storage[/\\]default[/\\]/) + 1); info("trying to delete: " + fileRelPath); // by using the existing SpecialPowers mechanism to create files and clean // them up. We clobber our existing content, then trigger deletion to // clean up after it. SpecialPowers.createFiles( [{ name: fileRelPath, data: '' }], grabEventAndContinueHandler, errorCallbackHandler); yield undefined; // This is async without a callback because it's intended for cleanup. // Since IDB is PBackground, we can't depend on serial ordering, so we need // to use another async action. SpecialPowers.removeFiles(); SpecialPowers.executeAfterFlushingMessageQueue(grabEventAndContinueHandler); yield undefined; // The file is now deleted! // Try and put the file-backed Blob in the database, expect failure on the // request and transaction. info("attempt to store deleted file-backed blob"); // context for NS_WARN_IF for (let i = 1; i < databases.length; i++) { let db = databases[i]; let trans = db.transaction([objectStoreName], READ_WRITE); let objectStore = trans.objectStore(objectStoreName); request = objectStore.add(fileBackedFile, 2); request.onsuccess = unexpectedSuccessHandler; request.onerror = expectedErrorHandler("UnknownError"); trans.onsuccess = unexpectedSuccessHandler; trans.onerror = expectedErrorHandler("UnknownError"); // the database will also throw an error. db.onerror = expectedErrorHandler("UnknownError"); event = yield undefined; event = yield undefined; event = yield undefined; // the database shouldn't throw any more errors now. db.onerror = errorHandler; } // Ensure there's nothing with that key in the target database. info("now that the transaction failed, make sure our put got rolled back"); for (let i = 1; i < databases.length; i++) { let db = databases[i]; let objectStore = db.transaction([objectStoreName], "readonly") .objectStore(objectStoreName); // Attempt to fetch the key to verify there's nothing in the DB rather // than the value which could return undefined as a misleading error. request = objectStore.getKey(2); request.onsuccess = grabEventAndContinueHandler; request.onerror = errorHandler; event = yield undefined; let result = event.target.result; is(result, undefined, "no key found"); // (the get returns undefined) } finishTest(); yield undefined; } </script> <script type="text/javascript;version=1.7" src="file.js"></script> <script type="text/javascript;version=1.7" src="helpers.js"></script> </head> <body onload="runTest();"></body> </html>