Call ObservationRecorder.add when observable is read

Closes #91

can-route-pushstate.js

@@ -16,6 +16,7 @@ var KeyTree = require("can-key-tree");
 
 var queues = require("can-queues");
 var SimpleObservable = require("can-simple-observable");
+var ObservationRecorder = require("can-observation-recorder");
 
 var isNode = require('can-globals/is-node/is-node');
 var LOCATION = require('can-globals/location/location');
@@ -231,7 +232,10 @@ canReflect.assign(PushstateObservable.prototype,{
 
 		domEvents.removeEventListener(window, 'popstate', this.dispatchHandlers);
 	},
-	get: getCurrentUrl,
+	get: function get() {
+		ObservationRecorder.add(this);
+		return getCurrentUrl();
+	},
 	set: function(path){
 		var newProps = route.deparam(path);
 		var oldProps = route.deparam(getCurrentUrl());

can-route-pushstate_test.js

@@ -420,6 +420,26 @@ function makeTest(mapModuleName){
 
 		});
 
+		test("currentRule should signal when it is read", function(assert) {
+			var done = assert.async();
+
+			makeTestingIframe(function(info, cleanup) {
+				info.history.pushState(null, null, "/");
+
+				info.route.register("");
+				info.route.register("{page}", { foo: "baz" });
+				info.route.start()
+
+				info.window.ObservationRecorder.start();
+				info.history.pushState(null, null, "home");
+				var deps = info.window.ObservationRecorder.stop();
+
+				ok(deps.valueDependencies.has(info.route.bindings.pushstate));
+				cleanup();
+				done();
+			});
+		});
+
 		test("sticky enough routes", function () {
 			stop();
 			makeTestingIframe(function (info, done) {

package.json

@@ -35,6 +35,7 @@
     "can-dom-events": "^1.1.0",
     "can-globals": "<2.0.0",
     "can-key-tree": "<2.0.0",
+    "can-observation-recorder": "^1.0.2",
     "can-queues": "<2.0.0",
     "can-reflect": "^1.8.0",
     "can-route": "^4.0.0",

test/testing.html

@@ -11,19 +11,26 @@
 <script>
 steal.done().then(function() {
 	Promise.all([
-		System.import('can-route-pushstate'),
+		System.import("can-route-pushstate"),
 		System.import(window.parent.MAP_MODULE_NAME),
-		System.import('can-queues')
-	]).then(function(modules){
+		System.import("can-queues"),
+		System.import("can-observation-recorder")
+	]).then(function(modules) {
 		window.route = modules[0];
 		window.CanMap = modules[1];
 		window.queues = modules[2];
-		setTimeout(function () {
-			window.parent.routeTestReady && window.parent.routeTestReady(route, window.location, window.history, window)
+		window.ObservationRecorder = modules[3];
+		setTimeout(function() {
+			window.parent.routeTestReady &&
+				window.parent.routeTestReady(
+					route,
+					window.location,
+					window.history,
+					window
+				);
 		}, 30);
 	});
 });
 </script>
-
 </body>
 </html>