1 files changed, 11 insertions, 0 deletions
diff --git a/railties/test/generators/plugin_test_runner_test.rb b/railties/test/generators/plugin_test_runner_test.rb
index 0bdf3b2726..0bdd2a77d2 100644
--- a/railties/test/generators/plugin_test_runner_test.rb
+++ b/railties/test/generators/plugin_test_runner_test.rb
@@ -92,6 +92,17 @@ class PluginTestRunnerTest < ActiveSupport::TestCase
     assert_equal 1, result.scan(/1 runs, 1 assertions, 0 failures/).length
   end
 
+  def test_warnings_option
+    plugin_file "test/models/warnings_test.rb", <<-RUBY
+      require 'test_helper'
+      def test_warnings
+        a = 1
+      end
+    RUBY
+    assert_match(/warning: assigned but unused variable/,
+      capture(:stderr) { run_test_command("test/models/warnings_test.rb -w") })
+  end
+
   private
     def plugin_path
       "#{@destination_root}/bukkits"