zopa-simon-cass/BankTechTest

Bank tech test

Getting started

1. Clone this repo git clone git@github.com:scass91/BankTechTest
2. Change directory cd BankTechTest
3. Run bundle to install dependencies bundle install

Testing

To run the tests within terminal: rspec

Usage

1. Within the root of the project in Terminal irb
2. Require the account.rb file require "./lib/account"
3. Create a new account, call it what you would like! NewAccount = Account.new
4. Update your bank account with credits by letting the bank know how much you wish to deposit NewAccount.credit(*amount*)
5. When you wish to spend money, let the bank know! NewAccount.debit(*amount*)
6. If you wish to see your balance NewAccount.balance
7. If you'd like to see a history of your transactions in a nice, easy to read statement NewAccount.print_statment

My Approach

1. I wrote out the user stories from the acceptance criteria
2. I diagrammed what I would need in order to separate class and responsibility
3. I split out the program into 4 classes initially;

Account
Statement
History
Transaction

4. My approach involved utilising the red-green-refactor TDD cycle
5. I decided that History & Statement did fairly similar things when I got to making my code, so I removed the History class
6. I kept in mind the below user stories, which helped to steer my build direction

User Stories

As a Customer,
So I can store my hard earned cash,
I would like to be able to deposit money in a bank account

As a Customer,
So I can spend my hard earned cash,
I would like to be able to withdraw my money from my bank account

As a Customer,
So I can see how much money I have,
I want to be able to check my balance

As a Customer,
So I can track my own spending,
I want to be able to see what date my balance changed

As a Customer,
So I can give my children pocket monies,
I want to be able to see my balance to the nearest penny

As a Customer,
So I can be clear on what is an is not going out of my account,
I want empty debits or credits to appear blank on my statements

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Today, you'll practice doing a tech test.

For most tech tests, you'll essentially have unlimited time. This practice session is about producing the best code you can when there is a minimal time pressure.

You'll get to practice your OO design and TDD skills.

You'll work alone, and you'll also review your own code so you can practice reflecting on and improving your own work.

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).

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