+
+We did a lot of work in laying the foundation of our app in the last step, so now we'll do
+something simple, and add full text search. We will also write an end-to-end test, because a good
+end-to-end test is a good friend. It stays with your app, keeps an eye on it, and quickly detects
+regressions.
+
+__`app/index.html`:__
+
+...
+ Fulltext Search:
+
+
+
+ {{phone.name}}
+
{{phone.snippet}}
+
+
+...
+
+__`test/e2e/scenarios.js`:__
+
+/* jasmine-like end2end tests go here */
+describe('PhoneCat App', function() {
+
+ describe('Phone list view', function() {
+
+ beforeEach(function() {
+ browser().navigateTo('../../app/index.html');
+ });
+
+
+ it('should filter the phone list as user types into the search box', function() {
+ expect(repeater('.phones li').count()).toBe(3);
+
+ input('query').enter('nexus');
+ expect(repeater('.phones li').count()).toBe(1);
+
+ input('query').enter('motorola');
+ expect(repeater('.phones li').count()).toBe(2);
+ });
+ });
+});
+
+
+## Discussion:
+
+We continued using the same controller that we set up in Step 2, but we added the following
+features to our app:
+
+* __Search Box:__ A standard HTML `` tag combined with angular's {@link
+angular.Array.filter $filter} utility (added to the repeater) lets a user type in search criteria
+and immediately see the effects of their search on the phone list. This new code demonstrates the
+following:
+
+ * Two way Data-binding. This is one of the core features in angular. When the page loads,
+ angular binds the name of the input box to a variable of the same name in the data model and
+ keeps the two in sync.
+
+In this example, the data that you type into the input box (named __`query`__) is immediately
+available as a filter input in the list repeater (`phone in phones.$filter(`__`query`__`)`).
+Whenever the data model changes and this change causes the input to the repeater to change, the
+repeater will efficiently update the DOM to reflect the current state of the model.
+
+ * Use of `$filter` in a template. The `$filter` function is one of several built-in {@link
+ angular.Array angular functions} that augment JavaScript arrays during their evaluation as
+ angular expressions. In {@link guide.expression angular expressions}, these array utilities are
+ available as array methods. (They are prefixed with a $ to avoid naming collisions.)
+
+ * `ng:repeat` automatically shrinks and grows the number of phones in the View, via DOM
+ manipulation that is completely transparent to the developer. If you've written any DOM
+ manipulation code, this should make you happy.
+
+* __CSS:__ We added in some minimal CSS to the file we set up in Step 0: `./css/app.css`.
+
+* __Testing:__ To run the end to end test, open http://localhost:8000/test/e2e/runner.html in
+your browser. This end-to-end test shows the following:
+
+ * Proof that the search box and the repeater are correctly wired together.
+
+ * How easy it is to write end-to-end tests. This is just a simple test, but the point here is
+ to show how easy it is to set up a functional, readable, end-to-end test.
+
+