diff --git a/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb b/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb
index 896b38bc8f517e9c3dc2d088be44d7070fcfc3ed..f302cd6c3d7054a1c5275090832d19bc577afef3 100644
--- a/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb
+++ b/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb
@@ -3,7 +3,10 @@
 <% module_namespacing do -%>
 class <%= controller_class_name %>ControllerTest < ActionController::TestCase
   setup do
-    @<%= singular_table_name %> = <%= table_name %>(:one)
+    @<%= singular_table_name %> = <%= fixture_name %>(:one)
+<% if mountable_engine? -%>
+    @routes = Engine.routes
+<% end -%>
   end
 
   test "should get index" do
diff --git a/railties/test/generators/scaffold_generator_test.rb b/railties/test/generators/scaffold_generator_test.rb
index a853bfbe21ec255d962a1e29af2716ca6e8c5cb5..0c3808a9a097d4db72c0455723e1a5f0a7cb4a8c 100644
--- a/railties/test/generators/scaffold_generator_test.rb
+++ b/railties/test/generators/scaffold_generator_test.rb
@@ -505,4 +505,32 @@ def test_scaffold_tests_pass_by_default_inside_full_engine
       assert_match(/8 runs, 13 assertions, 0 failures, 0 errors/, `bin/rails test 2>&1`)
     end
   end
+
+  def test_scaffold_tests_pass_by_default_inside_api_mountable_engine
+    Dir.chdir(destination_root) { `bundle exec rails plugin new bukkits --mountable --api` }
+
+    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(/6 runs, 8 assertions, 0 failures, 0 errors/, `bin/rails test 2>&1`)
+    end
+  end
+
+  def test_scaffold_tests_pass_by_default_inside_api_full_engine
+    Dir.chdir(destination_root) { `bundle exec rails plugin new bukkits --full --api` }
+
+    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(/6 runs, 8 assertions, 0 failures, 0 errors/, `bin/rails test 2>&1`)
+    end
+  end
 end