Add test for existence of LogicUnit class

test/laradi_test.rb

@@ -4,4 +4,10 @@ class LaradiTest < ActiveSupport::TestCase
   test "it has a version number" do
     assert Laradi::VERSION
   end
+
+  test "LogicUnit exists" do
+    lu = LogicUnit.new
+
+    asset lu.execute === "It Works"
+  end
 end