require 'spec_helper' describe Mutant::Matcher, '#context' do subject { object.context } let(:object) { described_class.new(constant_name) } let(:constant_name) { 'Foo' } let(:context) { mock('Context') } before do Mutant::Context.stub(:build => context) end #it { should be(context) } #it_should_behave_like 'an idempotent method' end