person_example.rb

require 'rubygems'
require 'spec'
require 'spec/mocks'
require "synthesis/util/mock_instance/rspec"

class Person; end

describe "synthesis" do
  it "accepts a greeting (non-existent method)" do
    person = Person.new
    person.should_receive(:hello)
    person.hello
  end
  
  it "accepts a greeting (method defined at runtime)" do
    person = Person.new
    greetings = Module.new do
      def hello; "hello"; end
    end
    person.extend greetings
    person.hello.should == "hello"
  end
end

Rakefile

require 'rubygems'
require 'synthesis/task'

Synthesis::Task.new do |t|
  t.adapter = :rspec
  t.pattern = '**/*.rb'
end

synthesis_report.txt

$ rake synthesis:test
(in /Users/david/projects/ruby/tmp/synth)
[Synthesis] Collecting expectations...
..

Finished in 0.003435 seconds

2 examples, 0 failures
[Synthesis] Verifying expectation invocations...
..

Finished in 0.001284 seconds

2 examples, 0 failures
[Synthesis] 
[Synthesis] Tested Expectations: 
[Synthesis] 
[Synthesis] Untested Expectations: 
() Person.new.hello() in ./example.rb:11
[Synthesis] Ignoring: 
[Synthesis] 
[Synthesis] FAILED.