class RSpec::Matchers::DSL::Matcher

feature in its own right.
Rails' test helper methods, but it's also a useful
rspec-rails so that it can define matchers that wrap
running `RSpec::Core::Example`). This is needed by
`@matcher_execution_context` (typically the current
Takes care of forwarding unhandled messages to the

def method_missing(method, *args, &block)
  if @matcher_execution_context.respond_to?(method)
    @matcher_execution_context.__send__ method, *args, &block
  else
    super(method, *args, &block)
  end
end