fix: always execute global and base states

Ensure that global and base states are executed regardless of
whether interaction defines a provider state, as described in
the docs.

Fixes pact-foundation#180

lib/pact/provider/test_methods.rb

@@ -36,12 +36,16 @@ def parse_body_from_response rack_response
       end
 
       def set_up_provider_states provider_states, consumer, options = {}
+        # If there are no provider state, execute with an nil state to ensure global and base states are executed
+        Pact.configuration.provider_state_set_up.call(nil, consumer, options) if provider_states.nil? || provider_states.empty?
         provider_states.each do | provider_state |
           Pact.configuration.provider_state_set_up.call(provider_state.name, consumer, options.merge(params: provider_state.params))
         end
       end
 
       def tear_down_provider_states provider_states, consumer, options = {}
+        # If there are no provider state, execute with an nil state to ensure global and base states are executed
+        Pact.configuration.provider_state_tear_down.call(nil, consumer, options) if provider_states.nil? || provider_states.empty?
         provider_states.reverse.each do | provider_state |
           Pact.configuration.provider_state_tear_down.call(provider_state.name, consumer, options.merge(params: provider_state.params))
         end

lib/pact/version.rb

@@ -1,4 +1,4 @@
 # Remember to bump pact-provider-proxy when this changes major version
 module Pact
-  VERSION = "1.36.0"
+  VERSION = "1.36.1"
 end