/rspec-core

Rspec-2 runner and formatters

Primary LanguageRubyMIT LicenseMIT

RSpec Core

RSpec Core provides the structure for writing executable examples of how your code should behave.

build status

Documentation

The Cucumber features are the most comprehensive and up-to-date docs for end-users.

The RDoc provides additional information for contributors and/or extenders.

All of the documentation is open source and a work in progress. If you find it lacking or confusing, you can help improve it by submitting requests and patches to the rspec-core issue tracker.

Install

gem install rspec      # for rspec-core, rspec-expectations, rspec-mocks
gem install rspec-core # for rspec-core only

Upgrading from rspec-1.x

See features/Upgrade.md

This will install the rspec, rspec-core, rspec-expectations and rspec-mocks gems.

Get Started

Start with a simple example of behavior you expect from your system. Do this before you write any implementation code:

# in spec/calculator_spec.rb
describe Calculator, "add" do
  it "returns the sum of its arguments" do
    Calculator.new.add(1, 2).should eq(3)
  end
end

Run this with the rspec command, and watch it fail:

$ rspec spec/calculator_spec.rb
./spec/calculator_spec.rb:1: uninitialized constant Calculator

Implement the simplest solution:

# in lib/calculator.rb
class Calculator
  def add(a,b)
    a + b
  end
end

Be sure to require the implementation file in the spec:

# in spec/calculator_spec.rb
# - RSpec adds ./lib to the $LOAD_PATH, so you can
#   just require "calculator" directly
require "calculator"

Now run the spec again, and watch it pass:

$ rspec spec/calculator_spec.rb
.

Finished in 0.000315 seconds
1 example, 0 failures

Use the documentation formatter to see the resulting spec:

$ rspec spec/calculator_spec.rb --format doc
Calculator add
  returns the sum of its arguments

Finished in 0.000379 seconds
1 example, 0 failures

Known issues

See http://github.com/rspec/rspec-core/issues

Learn more

While not comprehensive yet, you can learn quite a lot from the Cucumber features in the features directory. If there is a feature that is not documented there, or you find them insufficient to understand how to use a feature, please submit issues to http://github.com/rspec/rspec-core/issues.

Contribute

See http://github.com/rspec/rspec-dev

Also see