add test to run generated test files inside mountable engine

railties/test/generators/plugin_generator_test.rb

@@ -508,22 +508,6 @@ def test_generating_controller_inside_mountable_engine
       assert_match(/namespace :admin/, contents)
       assert_no_match(/namespace :bukkit/, contents)
     end
-    assert_file "test/controllers/bukkits/admin/dashboard_controller_test.rb" do |contents|
-      assert_match(/@routes = Engine.routes/, contents)
-    end
-  end
-
-  def test_generating_scaffold_controller_inside_mountable_engine
-    run_generator [destination_root, "--mountable"]
-
-    capture(:stdout) do
-      `#{destination_root}/bin/rails g scaffold User name:string age:integer`
-    end
-
-    assert_file "test/controllers/bukkits/users_controller_test.rb" do |contents|
-      assert_match(/@user = bukkits_users\(:one\)/, contents)
-      assert_match(/@routes = Engine.routes/, contents)
-    end
   end
 
   def test_git_name_and_email_in_gemspec_file

railties/test/generators/scaffold_controller_generator_test.rb

@@ -174,4 +174,15 @@ def test_model_name_option
       end
     end
   end
+
+  def test_controller_tests_pass_by_default_inside_mountable_engine
+    Dir.chdir(destination_root) { `bundle exec rails plugin new bukkits --mountable` }
+
+    engine_path = File.join(destination_root, "bukkits")
+
+    Dir.chdir(engine_path) do
+      quietly { `bin/rails g controller dashboard foo` }
+      assert_match(/2 runs, 2 assertions, 0 failures, 0 errors/, `bundle exec rake test 2>&1`)
+    end
+  end
 end

railties/test/generators/scaffold_generator_test.rb

@@ -393,4 +393,18 @@ def test_scaffold_generator_password_digest
       assert_match(/password_digest: <%= BCrypt::Password.create\('secret'\) %>/, content)
     end
   end
+
+  def test_scaffold_tests_pass_by_default_inside_mountable_engine
+    Dir.chdir(destination_root) { `bundle exec rails plugin new bukkits --mountable` }
+
+    engine_path = File.join(destination_root, "bukkits")
+
+    Dir.chdir(engine_path) do
+      quietly do
+        `bin/rails g scaffold User name:string age:integer;
+        bundle exec rake db:migrate`
+      end
+      assert_match(/8 runs, 13 assertions, 0 failures, 0 errors/, `bundle exec rake test 2>&1`)
+    end
+  end
 end