Rakefile in trailblazer-activity-0.8.0 vs Rakefile in trailblazer-activity-0.8.1

@@ -3,10 +3,10 @@
 require "rubocop/rake_task"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"
   t.libs << "lib"
-  t.test_files = FileList["**/*_test.rb"] - FileList["test/docs/*"]
+  t.test_files = FileList["**/*_test.rb"] - FileList["test/docs/*"] + ["test/docs/activity_test.rb"]
 end
 
 RuboCop::RakeTask.new
 
 task :default => :test