diff -r 000000000000 -r 6474c204b198 dom/tests/mochitest/geolocation/geolocation_common.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/tests/mochitest/geolocation/geolocation_common.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,103 @@
+var BASE_URL = "http://mochi.test:8888/tests/dom/tests/mochitest/geolocation/network_geolocation.sjs";
+
+function sleep(delay)
+{
+    var start = Date.now();
+    while (Date.now() < start + delay);
+}
+
+function force_prompt(allow, callback) {
+  SpecialPowers.pushPrefEnv({"set": [["geo.prompt.testing", true], ["geo.prompt.testing.allow", allow]]}, callback);
+}
+
+function start_sending_garbage(callback)
+{
+  SpecialPowers.pushPrefEnv({"set": [["geo.wifi.uri", BASE_URL + "?action=respond-garbage"]]}, function() {
+    // we need to be sure that all location data has been purged/set.
+    sleep(1000);
+    callback.call();
+  });
+}
+
+function stop_sending_garbage(callback)
+{
+  SpecialPowers.pushPrefEnv({"set": [["geo.wifi.uri", BASE_URL + ""]]}, function() {
+    // we need to be sure that all location data has been purged/set.
+    sleep(1000);
+    callback.call();
+  });
+}
+
+function stop_geolocationProvider(callback)
+{
+  SpecialPowers.pushPrefEnv({"set": [["geo.wifi.uri", BASE_URL + "?action=stop-responding"]]}, function() {
+    // we need to be sure that all location data has been purged/set.
+    sleep(1000);
+    callback.call();
+  });
+}
+
+function set_network_request_cache_enabled(enabled, callback)
+{
+  SpecialPowers.pushPrefEnv({"set": [["geo.wifi.debug.requestCache.enabled", enabled]]}, callback);
+}
+
+function worse_geolocationProvider(callback)
+{
+  SpecialPowers.pushPrefEnv({"set": [["geo.wifi.uri", BASE_URL + "?action=worse-accuracy"]]}, callback);
+}
+
+function resume_geolocationProvider(callback)
+{
+  SpecialPowers.pushPrefEnv({"set": [["geo.wifi.uri", BASE_URL + ""]]}, callback);
+}
+
+function delay_geolocationProvider(delay, callback)
+{
+  SpecialPowers.pushPrefEnv({"set": [["geo.wifi.uri", BASE_URL + "?delay=" + delay]]}, callback);
+}
+
+function send404_geolocationProvider(callback)
+{
+  set_network_request_cache_enabled(false, function() {
+    SpecialPowers.pushPrefEnv({"set": [["geo.wifi.uri", BASE_URL + "?action=send404"]]}, callback);});
+}
+
+function check_geolocation(location) {
+
+  ok(location, "Check to see if this location is non-null");
+
+  ok("timestamp" in location, "Check to see if there is a timestamp");
+
+  // eventually, coords may be optional (eg, when civic addresses are supported)
+  ok("coords" in location, "Check to see if this location has a coords");
+
+  var coords = location.coords;
+
+  ok("latitude" in coords, "Check to see if there is a latitude");
+  ok("longitude" in coords, "Check to see if there is a longitude");
+  ok("accuracy" in coords, "Check to see if there is a accuracy");
+  
+  // optional ok("altitude" in coords, "Check to see if there is a altitude");
+  // optional ok("altitudeAccuracy" in coords, "Check to see if there is a alt accuracy");
+  // optional ok("heading" in coords, "Check to see if there is a heading");
+  // optional ok("speed" in coords, "Check to see if there is a speed");
+
+  ok (Math.abs(location.coords.latitude - 37.41857) < 0.001, "lat matches known value");
+  ok (Math.abs(location.coords.longitude + 122.08769) < 0.001, "lon matches known value");
+  // optional  ok(location.coords.altitude == 42, "alt matches known value");
+  // optional  ok(location.coords.altitudeAccuracy == 42, "alt acc matches known value");
+}
+
+function toggleGeolocationSetting(value, callback) {
+  var mozSettings = window.navigator.mozSettings;
+  var lock = mozSettings.createLock();
+
+  var geoenabled = {"geolocation.enabled": value};
+
+  req = lock.set(geoenabled);
+  req.onsuccess = function () {
+    ok(true, "set done");
+    callback();
+  }
+}