CodeDrivenDevelopment
Ever see a test and think, "wow, this test cares a lot about the exact abstract syntax tree of the code?" CDD aims to generate tests like that. Here's some example input:
class Bunker < ActiveRecord::Base
validate :password, secure: true
validate :location, :protected => true
def alert_staff
staph.all_alert
Staff.alert_all
end
def alert_president
SecretService.stand_down
alert_staff || go_crazy
end
end
And this is what CDD thinks of it:
describe Bunker do
it { should validate_secure_of :password }
it { should validate_protected_of :location }
describe "#alert_staff" do
let(:obj) { described_class.new }
let(:all_alert) { double(:all_alert) }
let(:staph) { double(:staph) }
let(:alert_all) { double(:alert_all) }
subject { obj.alert_staff }
before do
allow(staph).to receive(:all_alert).and_return(all_alert)
allow(obj).to receive(:staph).and_return(staph)
allow(Staff).to receive(:alert_all).and_return(alert_all)
end
it "calls staph.all_alert" do
subject
expect(staph).to have_received :all_alert
expect(obj).to have_received :staph
end
it "calls Staff.alert_all" do
subject
expect(Staff).to have_received :alert_all
end
end
describe "#alert_president" do
let(:obj) { described_class.new }
let(:stand_down) { double(:stand_down) }
subject { obj.alert_president }
before do
allow(SecretService).to receive(:stand_down).and_return(stand_down)
end
it "calls SecretService.stand_down" do
subject
expect(SecretService).to have_received :stand_down
end
describe "#alert_staff is truthy" do
before do
allow(obj).to receive(:alert_staff).and_return('alert_staff')
allow(obj).to receive(:go_crazy)
end
it "returns #alert_staff" do
expect(subject).to eq 'alert_staff'
end
it "doesn't call #go_crazy" do
subject
expect(obj).not_to have_received :go_crazy
end
end
describe "#alert_staff is falsey" do
before do
allow(obj).to receive(:alert_staff).and_return(false)
allow(obj).to receive(:go_crazy).and_return('go_crazy')
end
it "returns #go_crazy" do
expect(subject).to eq 'go_crazy'
end
it "calls #alert_staff" do
subject
expect(obj).to have_received :alert_staff
end
end
end
end
Installation
Add this line to your application's Gemfile:
gem 'code_driven_development'
And then execute:
$ bundle
Or install it yourself as:
$ gem install code_driven_development
Usage
$ cdd path/to/some/source.rb
Contributing
- Fork it
- Create your feature branch (
git checkout -b my-new-feature
) - Commit your changes (
git commit -am 'Add some feature'
) - Push to the branch (
git push origin my-new-feature
) - Create new Pull Request