Bank tech test

Description

A bank tech test which allows users to interact with their account through depositing money, withdrawing money and printing their bank statement.

Approach

I have split the code into two classes: Account and Statement. The Account class is responsible for handling deposits, withdrawals and holding the transactions, whereas the Statement class is responsible for generating the statement.

Technology used

• Language: JavaScript
• Testing Framework: Jasmine

How to run the project:

Clone this repository from Github then open in your browser. Below is an example of how to run the code:

$ var account = new Account() $ account.deposit(100) $ account.withdraw(50) $ account.seeStatement()

An example of code running can be seen below:

How to run tests:

Clone this repository from Github then open SpecRunner.html in your browser.

Specification

Requirements

• You should be able to interact with your code via a REPL like IRB or the JavaScript console. (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).

User stories

As a client,
So I can add money to my account,
I can make deposits into my account.

As a client,
So I can take money out of my account,
I can make withdrawals from my account.

As a client,
So I can analyse my account,
I can see an account statement which prints the date, amount and current balance of my transactions.

Acceptance criteria

Given a client makes a deposit of 1000 on 10-01-2012
And a deposit of 2000 on 13-01-2012
And a withdrawal of 500 on 14-01-2012
When she prints her bank statement
Then she would see

date || credit || debit || balance
14/01/2012 || || 500.00 || 2500.00
13/01/2012 || 2000.00 || || 3000.00
10/01/2012 || 1000.00 || || 1000.00

Models

class	methods	variables
Account	.deposit(amount)	this.transactions = [{date: date, type: type, amount: amount}]
	.withdraw(amount)
	.seeStatement()

class	methods	variables
Statement	.createStatement()

Input/Output Table

Before: account = new Account

Input	Function	Output
	account.seeStatement()	date || credit || debit || balance
account.deposit(50)	account.seeStatement()	date || credit || debit || balance 15/06/2020 || 50.00 || || 50.00
account.deposit(50) account.deposit(50)	account.seeStatement()	date || credit || debit || balance 15/06/2020 || 50.00 || || 100.00 15/06/2020 || 50.00 || || 50.00
account.deposit(50) account.deposit(100)	account.seeStatement()	date || credit || debit || balance 15/06/2020 || 100.00 || || 150.00 15/06/2020 || 50.00 || || 50.00
account.deposit(100) account.withdraw(50)	account.seeStatement()	date || credit || debit || balance 15/06/2020 || || 50.00 || 50.00 15/06/2020 || 100.00 || || 100.00