Contents

module Spec
  module Expectations
    class InvalidMatcherError < ArgumentError; end

    module MatcherHandlerHelper
      def describe_matcher(matcher)
        matcher.respond_to?(:description) ? matcher.description : "[#{matcher.class.name} does not provide a description]"
      end
    end

    class ExpectationMatcherHandler
      class << self
        include MatcherHandlerHelper
        def handle_matcher(actual, matcher, &block)
          unless matcher.respond_to?(:matches?)
            raise InvalidMatcherError, "Expected a matcher, got #{matcher.inspect}."
          end

          match = matcher.matches?(actual, &block)
          ::Spec::Matchers.generated_description = "should #{describe_matcher(matcher)}"
          Spec::Expectations.fail_with(matcher.failure_message) unless match
        end
      end
    end

    class NegativeExpectationMatcherHandler
      class << self
        include MatcherHandlerHelper
        def handle_matcher(actual, matcher, &block)
          unless matcher.respond_to?(:matches?)
            raise InvalidMatcherError, "Expected a matcher, got #{matcher.inspect}."
          end

          unless matcher.respond_to?(:negative_failure_message)
            Spec::Expectations.fail_with(
<<-EOF
Matcher does not support should_not.
See Spec::Matchers for more information
about matchers.
EOF
)
          end
          match = matcher.matches?(actual, &block)
          ::Spec::Matchers.generated_description = "should not #{describe_matcher(matcher)}"
          Spec::Expectations.fail_with(matcher.negative_failure_message) if match
        end
      end
    end

  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
picolena-0.1.6	rails_plugins/rspec/lib/spec/expectations/handler.rb
picolena-0.1.7	rails_plugins/rspec/lib/spec/expectations/handler.rb
picolena-0.1.8	rails_plugins/rspec/lib/spec/expectations/handler.rb