Issue#57

[msharma-tw]

Feature: Sending Cookies and Asserting Cookies from Response

Library Added: lightweight

Files Changed:

1. Spec.d.ts.......................added declaration for withCookies(), expectCookies() and expectStrictCookies()
2. Spec.js...........................added implementation for withCookies(), expectCookies() and expectStrictCookies()
3. expect.js........................added _validateCookies() and _validateStrictCookies for cookies assertion
4. cookies.spec.js.............added tests related to cookies

NOTE: Changes in below also required

• cookie implementation within mock server
• documentation

[chrisrichard]

For user-facing APIs it's typical to keep authentication tokens hidden inside the application and issue an "opaque" cookie to represent the session to the user agent upon successful sign-in. In this case we'd like to verify that the Set-Cookie is as expected, which we can do with this PR, but also have a built-in way to store the cookie(s) and automatically send the right ones on subsequent requests, as a cookie-supporting HTTP user agent would do.

Would be willing to work on a PR for this if you can provide a bit of guidance on how to integrate.

EDIT: Just found #112