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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/indexedDB/test/test_file_put_deleted.html
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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+<!--
+ 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>
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