The Tor Browser / file revision

 // Tests for the test functions in head.js

 function test() {

   waitForExplicitFinish();

   runTests();

 }

 gTests.push({

   desc: "task sanity check",

   run: function() {

     let sum2plus2 = yield asyncSum(2, 2);

     ok(sum2plus2 == 4, "asyncSum responded 2+2=4");

     function asyncSum(a, b) {

       var defd = Promise.defer();

       setTimeout(function(){

         defd.resolve(a+b);

       }, 25);

       return defd.promise;

     }

   }

 });

 gTests.push({

   desc: "addTab",

   run: function testAddTab() {

     let tab = yield addTab("http://example.com/");

     is(tab, Browser.selectedTab, "The new tab is selected");

   }

 });