RSpec¶ ↑

Behaviour Driven Development for Ruby

Install¶ ↑

gem install rspec

Synopsis¶ ↑

describe Account do
  context "transfering money" do
    it "deposits transfer amount to the other account" do
      source = Account.new(50, :USD)
      target = mock('target account')
      target.should_receive(:deposit).with(Money.new(5, :USD))
      source.transfer(5, :USD).to(target)
    end

    it "reduces its balance by the transfer amount" do
      source = Account.new(50, :USD)
      target = stub('target account')
      source.transfer(5, :USD).to(target)
      source.balance.should == Money.new(45, :USD)
    end
  end
end

$ spec ./spec/account_spec.rb --format nested
Account
  transfering money
    deposits transfer amount to the other account
    reduces its balance by the transfer amount

2 examples, 0 failures