New integration test for shared variables

integration_tests/ruby_dsl/009_shared_variables.rb

@@ -0,0 +1,26 @@
+model :TestAction do
+
+    graph :Car do
+        var distance_to_wall: (0..10), init: 0
+
+        states :DrivingRelentlessly
+
+        transition :DrivingRelentlessly => :DrivingRelentlessly do
+            precon "distance_to_wall > 0"
+            action "distance_to_wall := distance_to_wall - 1"
+        end
+    end
+    graph :CrashDetector do
+        states :no_crash, :crash, init: :no_crash
+
+        transition :no_crash => :crash do
+            guard "distance_to_wall == 0"
+        end
+
+    end
+
+    specify "The car" do
+        it "starts out driving" => :"CrashDetector == no_crash && Car == DrivingRelentlessly"
+        it "crashes horribly" => :"F CrashDetector == crash"
+    end
+end

spec/lib/pg-tools/transformation/hash_transformation_spec.rb

@@ -1,7 +1,7 @@
 
 RSpec.describe PgTools::Transform::HashTransformation do
 
-    test_files = Dir[File.join(PgTools.root, "integration_tests", "ruby_dsl", "*.rb")]
+    test_files = Dir[File.join(PgTools.root, "integration_tests", "ruby_dsl", "*.rb")].sort
 
     test_files.each { |test_file|
         it "round trips for '#{File.basename(test_file)}'" do