diff -r 000000000000 -r 6474c204b198 toolkit/devtools/sourcemap/tests/unit/test_base64.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/sourcemap/tests/unit/test_base64.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,43 @@
+/*
+ * WARNING!
+ *
+ * Do not edit this file directly, it is built from the sources at
+ * https://github.com/mozilla/source-map/
+ */
+
+Components.utils.import('resource://test/Utils.jsm');
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+define("test/source-map/test-base64", ["require", "exports", "module"], function (require, exports, module) {
+
+  var base64 = require('source-map/base64');
+
+  exports['test out of range encoding'] = function (assert, util) {
+    assert.throws(function () {
+      base64.encode(-1);
+    });
+    assert.throws(function () {
+      base64.encode(64);
+    });
+  };
+
+  exports['test out of range decoding'] = function (assert, util) {
+    assert.throws(function () {
+      base64.decode('=');
+    });
+  };
+
+  exports['test normal encoding and decoding'] = function (assert, util) {
+    for (var i = 0; i < 64; i++) {
+      assert.equal(base64.decode(base64.encode(i)), i);
+    }
+  };
+
+});
+function run_test() {
+  runSourceMapTests('test/source-map/test-base64', do_throw);
+}