account

README

Bank Account

Simulate a bank account supporting opening/closing, withdrawals, and deposits of money. Watch out for concurrent transactions!

A bank account can be accessed in multiple ways. Clients can make deposits and withdrawals using the internet, mobile phones, etc. Shops can charge against the account.

Create an account that can be accessed from multiple threads/processes (terminology depends on your programming language).

It should be possible to close an account; operations against a closed account must fail.

Instructions

Run the test file, and fix each of the errors in turn. When you get the first test to pass, go to the first pending or skipped test, and make that pass as well. When all of the tests are passing, feel free to submit.

Remember that passing code is just the first step. The goal is to work towards a solution that is as readable and expressive as you can make it.

Have fun!

Running the tests

To run the tests run the command go test from within the exercise directory.

If the test suite contains benchmarks, you can run these with the --bench and --benchmem flags:

go test -v --bench . --benchmem

Keep in mind that each reviewer will run benchmarks on a different machine, with different specs, so the results from these benchmark tests may vary.

Further information

For more detailed information about the Go track, including how to get help if you're having trouble, please visit the exercism.io Go language page.

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

Documentation

Index

• type Account
  • func Open(deposit int64) *Account
  • func (a *Account) Balance() (balance int64, ok bool)
  • func (a *Account) Close() (payout int64, ok bool)
  • func (a *Account) Deposit(amount int64) (newBalance int64, ok bool)

Types

type Account

type Account struct {
	// contains filtered or unexported fields
}

Account is a bank account

func Open

func Open(deposit int64) *Account

Open opens new back account with given inital deposit

func (*Account) Balance

func (a *Account) Balance() (balance int64, ok bool)

Balance returns current balance of account a. it returns balance and status of operation

func (*Account) Close

func (a *Account) Close() (payout int64, ok bool)

Close closes account a. it returns accounts payout and status of opertation

func (*Account) Deposit

func (a *Account) Deposit(amount int64) (newBalance int64, ok bool)

Deposit adds a given amount into account a's balance. The amount could be negative, to represent withdraws