rspec idioms for cleaner tests

_spec.rb

describe Thing do
		def given_thing_with(options)
			yield Thing.new do |thing|
				thing.set_status(options[:status])
			end
		end

		it "should do something when ok" do
			given_thing_with(:status => 'ok') do |thing|
				thing.do_fancy_stuff(1, true, :move => 'left', :obstacles => nil)
				...
			end
		end
		it "should do something else when not so good" do
			given_thing_with(:status => 'not so good') do |thing|
				thing.do_fancy_stuff(1, true, :move => 'left', :obstacles => nil)
				...
			end
		end
	end

This sort of indirection can make under- standing failures quite painful when overused.