Added Declarative-test-demo page

Signed-off-by: Marc-Ed Raffalli <[email protected]>

_data/sidebars/community_sidebar.yml

@@ -29,3 +29,7 @@ children:
   - title: 'SuperTest models'
     url: SuperTest-models.html
     output: 'web'
+
+  - title: 'Declarative test demo'
+    url: Declarative-test-demo.html
+    output: 'web'

pages/en/community/Declarative-test-demo.md

@@ -0,0 +1,77 @@
+---
+title: Declarative test demo
+keywords: automation, e2e, example, loopback, mocha, test
+tags: [community_project]
+sidebar: community_sidebar
+permalink: /doc/en/community/Declarative-test-demo.html
+summary: Example application that demonstrates using lb-declarative-e2e-test to write tests in an object definition style.
+---
+
+## Links
+
+This demo is available on Github:
+[https://github.com/marc-ed-raffalli/loopback-example-tests](https://github.com/marc-ed-raffalli/loopback-example-tests)
+
+Library used:
+[https://www.npmjs.com/package/lb-declarative-e2e-test](https://www.npmjs.com/package/lb-declarative-e2e-test)
+
+## Overview
+
+This project showcase the different features of [`lb-declarative-e2e-test`](https://www.npmjs.com/package/lb-declarative-e2e-test):
+- Test hooks: `before`, `beforeEach`, `after`, `afterEach`
+- Test `only` / `skip`
+- Authenticated requests
+  - Customizable login endpoint
+- Response test:
+  - status
+  - header
+  - body
+  - custom (callback)
+
+[`lb-declarative-e2e-test`](https://www.npmjs.com/package/lb-declarative-e2e-test) allows to write tests in an object definition style, 
+it combines and exposes API from [Mocha](https://mochajs.org/) and [supertest](https://github.com/visionmedia/supertest)
+
+Authenticated requests are fully supported, testing them becomes a no-brainer:  
+
+```js
+{
+  name: 'admin CAN create',
+  verb: 'post',
+  auth: usersCredentials.admin,
+  body: {some: 'value'},
+  url: '/some/url/',
+  expect: 200
+}
+```
+
+## Demo features
+
+- Tests
+  - [x] e2e
+  - [ ] model validation (wip)
+- Watcher for TDD
+- Coverage
+
+## Running the demo
+
+Installing dependencies:
+
+```bash
+npm install
+```
+
+Run the tests with coverage analysis:
+
+```bash
+npm test
+```
+
+Run the test with file watcher:
+
+```bash
+npm run test-watch
+```
+
+## Requirements
+
+- Node >= 8

pages/en/community/How-to-add-a-project.md

@@ -116,7 +116,7 @@ Edit the community sidebar navigation file `_data/sidebars/community_sidebar.yml
   output: 'web'
 </pre>
 
-{% include note.html content="Mke sure the `url` property in the sidebar matches the page's `permalink` property.
+{% include note.html content="Make sure the `url` property in the sidebar matches the page's `permalink` property.
 " %}
 
 ## Test your change