Bank Tech Test

A practice Tech test to build a simple CLI banking app.

Tech:

Javascript - Jasmine

Setup:

  $ git clone https://github.com/jbropho/bank-tech-test
  $ cd bank-tech-test
  $ node inspect src/app.js
  $ c
  $ repl 

  available commands are 
   * account.deposit(amount)
   * account.withdraw(amount)
   * account.getBalance()
   * account.printStatement()

Approach

I decided to split my application into three seperate components, a bank account, a statement and a statement printer. I wanted to use dependency injection, by inserting my statement and printer objects into my account object. This approach allows me to expose all of the apps functionality via a single interface, the account object.

Positives

• Encapsulated state and exposed a series of getter/setter methods for interacting with application state
• Seperated concerns into clearly defined components which provide a single responsibility

If I had more time

• I would refactor my design to incorporate prototypal inheritance. I appreciate the encapsulation provided by closures, however, this approach does make modifying features more difficult. I would like to adopy a hybrid approach which allows encapsulation and makes the code flexible for change.
• I would like to expand on the CLI interface to allow a better user experience