michael@0: function test() {
michael@0:   let osString = Cc["@mozilla.org/xre/app-info;1"].
michael@0:                  getService(Ci.nsIXULRuntime).OS;
michael@0: 
michael@0:   // this test is Linux-specific
michael@0:   if (osString != "Linux")
michael@0:     return;
michael@0: 
michael@0:   let shell = Cc["@mozilla.org/browser/shell-service;1"].
michael@0:               getService(Ci.nsIShellService);
michael@0: 
michael@0:   shell.setDefaultBrowser(true, false);
michael@0:   ok(shell.isDefaultBrowser(true, false), "we got here and are the default browser");
michael@0:   ok(shell.isDefaultBrowser(true, true), "we got here and are the default browser");
michael@0: }