diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -23,6 +23,7 @@
     "gzip-size-cli": "^1.0.0",
     "karma": "^0.13.13",
     "karma-qunit": "~2.0.1",
+    "karma-sauce-launcher": "^1.2.0",
     "nyc": "^2.1.3",
     "pretty-bytes-cli": "^1.0.0",
     "qunit-cli": "~0.2.0",

diff --git a/test/objects.js b/test/objects.js
@@ -705,7 +705,7 @@
     if (typeof Map === 'function') {
       var keyString = 'a string';
       var obj = new Map();
-      obj.set(keyString, 'value');
+      obj.set(keyString, "value associated with 'a string'");
       assert.ok(_.isMap(obj), 'but a map is');
     }
   });
@@ -750,8 +750,7 @@
       assert.ok(!_.isSet(new WeakSet()), 'a weakset is not a set');
     }
     if (typeof Set === 'function') {
-      var obj = new Set();
-      obj.add(1).add('string').add(false).add({});
+      var obj = new Set([1, 2, 3, 4, 5]);
       assert.ok(_.isSet(obj), 'but a set is');
     }
   });

diff --git a/test/vendor/qunit.js b/test/vendor/qunit.js
@@ -4187,7 +4187,7 @@
   	// Listen for unhandled rejections, and call QUnit.onUnhandledRejection
   	window.addEventListener("unhandledrejection", function (event) {
   		QUnit.onUnhandledRejection(event.reason);
-  	});
+  	},false);
   })();
 
   /*