michael@0: function test () {
michael@0:   // Load `constructor` as global since tabs uses `traits`
michael@0:   // that use this module
michael@0:   let loader = makeLoader({ globals: constructor });
michael@0:   let module = Module("./main", "scratchpad://");
michael@0:   let require = Require(loader, module);
michael@0: 
michael@0:   let tabs = require("sdk/tabs");
michael@0: 
michael@0:   tabs.open({
michael@0:     url: "about:blank",
michael@0:     onReady: function (tab) {
michael@0:       is(tab.url, "about:blank", "correct uri for tab");
michael@0:       is(tabs.activeTab, tab, "correctly active tab");
michael@0:       tab.close(finish);
michael@0:     }
michael@0:   });
michael@0: }