# File lib/mocha/mock.rb, line 42 42: def expects(method_name_or_hash, backtrace = nil) 43: iterator = ArgumentIterator.new(method_name_or_hash) 44: iterator.each { |*args| 45: method_name = args.shift 46: ensure_method_not_already_defined(method_name) 47: expectation = Expectation.new(self, method_name, backtrace) 48: expectation.returns(args.shift) if args.length > 0 49: @expectations.add(expectation) 50: } 51: end