Allow access to registry from conditions

features/registry.feature

@@ -24,3 +24,13 @@ Feature: key/value registry
       """
     When I successfully execute the recipe
     Then the output must contain "some_value"
+
+  Scenario: `get' keyword fetches a value from a condition
+    Given a recipe with:
+      """
+      set :some_key, 'some_value'
+
+      task(:ok) { condition { get :some_key }; echo get :some_key }
+      """
+    When I successfully execute the recipe
+    Then the output must contain "some_value"

lib/producer/core/condition.rb

@@ -29,6 +29,9 @@ module Producer
         end
       end
 
+      extend Forwardable
+      def_delegators :@env, :get
+
       define_test :`,               Tests::ShellCommandStatus
       define_test :sh,              Tests::ShellCommandStatus
       define_test :file_contains,   Tests::FileContains

lib/producer/core/env.rb

@@ -20,6 +20,7 @@ module Producer
       def [](key)
         @registry[key]
       end
+      alias get []
 
       def []=(key, value)
         @registry[key] = value

spec/producer/core/condition_spec.rb

@@ -173,5 +173,14 @@ module Producer::Core
         end
       end
     end
+
+    describe '#get' do
+      let(:env) { Env.new }
+
+      it 'delegates to env registry' do
+        expect(env).to receive(:get).with :some_key
+        described_class.evaluate(env, []) { get :some_key }
+      end
+    end
   end
 end