spec for git commit message format

git_spec.rb

describe 'git process' do
  describe 'commit message' do
    it 'includes the Pivotal Tracker story id' do
      includes_properly_formatted_pt_id?.should be_true
    end

    def includes_properly_formatted_pt_id?
      # [Fixes #1234555] for individual stories
      # [Fixes #1234555 #928756] if the fix affects multiple stories
      last_commit_message = %x{git log -1 --pretty=%B --no-merges}
      !(last_commit_message !~/\[Fixes( #[0-9]+)+\]/)
    end
  end
end