hack around jruby bug with pact

spec/service_consumers/pact_helper.rb

@@ -21,6 +21,21 @@
 require 'bundler'
 Bundler.require(:default, :test)
 
+if 'java'.eql?(RUBY_PLATFORM)
+  module Pact
+    module MatchingRules
+      class Merge
+        def initialize expected, matching_rules, root_path
+          @expected = expected
+          @matching_rules = standardise_paths(matching_rules)
+          # @root_path = JsonPath.new(root_path).to_s  # problematic line in jruby
+          @root_path = JsonPath.new(root_path).path.join
+        end
+      end
+    end
+  end
+end
+
 ActiveSupport.use_standard_json_time_format = true
 ActiveSupport.time_precision = 0