javascriptTests

Scale Computing Javascript Interview Tests

Instructions

Please fork this repo, and clone the fork. Once you are done, push your changes to github, and send a pull request. I may give you some code comments and ask you to make some changes.

You'll need node.js installed in your environment. To setup to run the unit tests run:

npm install

Now, if you run:

npm test

You should see 6 passing and 3 failing unit tests, and you're ready to get started with the problems.

Problem 1: Transform

To see the failing unit tests run:

./node_modules/mocha/bin/mocha --ui tdd test/transform.mocha.js

Fill in the function in transform.js. This test is about understanding passing functions as arguments. This is not a trick question, so a simple for loop implementation will work.

Problem 2: Events (part 1)

Run:

./node_modules/mocha/bin/mocha --ui tdd test/event.mocha.js

All the unit tests pass, but there is a bug. Calling getData in the "change" event callback handler returns the old data, but set has already been called, so getData should return the recently set data.

Write a failing unit test to validate the bug exists.

Problem 3: Events (part 2)

Now that you have a failing unit tests, fix the code in event.js to get all the unit tests passing. Please do not change the signature of public methods.