rohitkrai03 / dbchallenge

DB Updating Table Dev Challenge

The solution is in the site/index.html file.

To view the solution, run

npm install
npm start

from within this directory. This will start a development server (using webpack). Once the development server has started, navigate to http://localhost:8011 to see the solution

To run test,

npm test

Test framework is used is mocha and test runner is karma alongwith the expect assertion library. All test files are in test/specs and the name ends with .spec.js.

All the new files have been added in es6 directory.

• Currency -> Model to represent the currency data.
• TableRow -> Encapsulates Currency and creates a table row node.
• Table -> Represents a list of TableRows items. On every new Currency is received or updates, it sorts the list in increasing order of lastChangeBid and fires all the subscribed listeners. It also fires all the listeners subscribed to sparkline event every given interval while creating the object.
• AppView -> This is the main view that represents the table data. This class performs functionality specific to browser, like --
  • subscribing to the /fx/prices channel to get updates
  • render the table data on every update received
  • render the sparkline every 30 seconds from the history of updates
  • first sparkline is generated when first data comes for each of the currency pair. Then it refreshes every 30 seconds as stated above.
• Tests have been written for all files except AppView

Name - Rohit Rai
Email - [e-mail]