Check to make sure that sqlite has been compiled with SQLITE_SECURE_DELETE (Bug 445164); r=asuth

storage/test/unit/test_sqlite_secure_delete.js

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+/*-*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Storage Test Code.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2009
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Shawn Wilsher <me@shawnwilsher.com> (Original Author)
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/**
+ * This file tests to make sure that SQLite was compiled with
+ * SQLITE_SECURE_DELETE=1.
+ */
+
+////////////////////////////////////////////////////////////////////////////////
+//// Helper Methods
+
+/**
+ * Reads the contents of a file and returns it as a string.
+ *
+ * @param aFile
+ *        The file to return from.
+ * @return the contents of the file in the form of a string.
+ */
+function getFileContents(aFile)
+{
+  let fstream = Cc["@mozilla.org/network/file-input-stream;1"].
+                createInstance(Ci.nsIFileInputStream);
+  fstream.init(aFile, -1, 0, 0);
+
+  let bstream = Cc["@mozilla.org/binaryinputstream;1"].
+                createInstance(Ci.nsIBinaryInputStream);
+  bstream.setInputStream(fstream);
+  return bstream.readBytes(bstream.available());
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//// Tests
+
+function test_delete_removes_data()
+{
+  const TEST_STRING = "SomeRandomStringToFind";
+
+  let file = getTestDB();
+  let db = getService().openDatabase(file);
+
+  // Create the table and insert the data.
+  db.createTable("test", "data TEXT");
+  let stmt = db.createStatement("INSERT INTO test VALUES(:data)");
+  stmt.params.data = TEST_STRING;
+  try {
+    stmt.execute();
+  }
+  finally {
+    stmt.finalize();
+  }
+
+  // Make sure this test is actually testing what it thinks by making sure the
+  // string shows up in the database.  Because the previous statement was
+  // automatically wrapped in a transaction, the contents are already on disk.
+  let contents = getFileContents(file);
+  do_check_neq(-1, contents.indexOf(TEST_STRING));
+
+  // Delete the data, and then close the database.
+  stmt = db.createStatement("DELETE FROM test WHERE data = :data");
+  stmt.params.data = TEST_STRING;
+  try {
+    stmt.execute();
+  }
+  finally {
+    stmt.finalize();
+  }
+  db.close();
+
+  // Check the file to see if the string can be found.
+  contents = getFileContents(file);
+  do_check_eq(-1, contents.indexOf(TEST_STRING));
+
+  run_next_test();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//// Test Runner
+
+var tests =
+[
+  test_delete_removes_data,
+];
+let index = 0;
+
+function run_next_test()
+{
+  if (index < tests.length) {
+    do_test_pending();
+    print("Running the next test: " + tests[index].name);
+    tests[index++]();
+  }
+
+  do_test_finished();
+}
+
+function run_test()
+{
+  cleanup();
+
+  do_test_pending();
+  run_next_test();
+}