michael@0: function ok(what, msg) {
michael@0:   postMessage({ event: msg, test: 'ok', a: what });
michael@0: }
michael@0: 
michael@0: function is(a, b, msg) {
michael@0:   postMessage({ event: msg, test: 'is', a: a, b: b });
michael@0: }
michael@0: 
michael@0: self.onmessage = function onmessage(event) {
michael@0: 
michael@0:   // An XHR with system privileges will be able to do cross-site calls.
michael@0: 
michael@0:   const TEST_URL = "http://example.com/tests/content/base/test/test_XHR_system.html";
michael@0:   is(location.hostname, "mochi.test", "hostname should be mochi.test");
michael@0: 
michael@0:   var xhr = new XMLHttpRequest({mozSystem: true});
michael@0:   is(xhr.mozSystem, true, ".mozSystem == true");
michael@0:   xhr.open("GET", TEST_URL);
michael@0:   xhr.onload = function onload() {
michael@0:     is(xhr.status, 200);
michael@0:     ok(xhr.responseText != null);
michael@0:     ok(xhr.responseText.length);
michael@0:     postMessage({test: "finish"});
michael@0:   };
michael@0:   xhr.onerror = function onerror() {
michael@0:     ok(false, "Got an error event!");
michael@0:     postMessage({test: "finish"});
michael@0:   }
michael@0:   xhr.send();
michael@0: };