Add tests for plugin sanity check.

1 files changed, 24 insertions, 0 deletions

diff --git a/railties/test/plugins/vendored_test.rb b/railties/test/plugins/vendored_test.rb
index 1fc8766def..86f3ecd1f7 100644
--- a/railties/test/plugins/vendored_test.rb
+++ b/railties/test/plugins/vendored_test.rb
@@ -247,6 +247,30 @@ YAML
       assert_equal 200, last_response.status
       assert_equal "Rendered from namespace", last_response.body
     end
+
+    test "plugin cannot declare an engine for it" do
+      @plugin.write "lib/bukkits.rb", <<-RUBY
+        class Bukkits
+          class Engine < Rails::Engine
+          end
+        end
+      RUBY
+
+      @plugin.write "init.rb", <<-RUBY
+        require "bukkits"
+      RUBY
+
+      rescued = false
+
+      begin
+        boot_rails
+      rescue Exception => e
+        rescued = true
+        assert_equal '"bukkits" is a Railtie/Engine and cannot be installed as plugin', e.message
+      end
+
+      assert rescued, "Expected boot rails to fail"
+    end
   end
 
   class VendoredOrderingTest < Test::Unit::TestCase