Bank Tech Test

A practice tech-test, based upon the following specifications:

Requirements

- You should be able to interact with your code via a REPL like IRB or Node. 
- (You don't need to implement a command line interface that takes input from STDIN.)
- Deposits, withdrawal.
- Account statement (date, amount, balance) printing.
- Data can be kept in memory (it doesn't need to be stored to a database or anything).

Approach

I chose to split the problem into three classes initially: a bank class, a transaction class, and a statement class. The statement and transaction would be dependency-injected into the bank class to reduce coupling.

Instructions:

Install dependencies:

npm install

Create and instantiate the classes:

const Bank = require('./bank')
const Transaction = require('./transaction')
const Statement = require('./statement')
const transaction = new Transaction;
const statement = new Statement;
const bank = new Bank(transaction, statement);

Deposit/withdraw funds:

e.g.

bank.depositFunds(10)

or

bank.withdrawFunds(5)

View statement:

bank.printStatement()