1 files changed, 14 insertions, 0 deletions
diff --git a/spec/ruby/language/constants_spec.rb b/spec/ruby/language/constants_spec.rb
index 03f1272401..bc76c60d20 100644
--- a/spec/ruby/language/constants_spec.rb
+++ b/spec/ruby/language/constants_spec.rb
@@ -718,3 +718,17 @@ describe 'Allowed characters' do
     eval("mod::ἍBB").should == 1
   end
 end
+
+describe 'Assignment' do
+  context 'dynamic assignment' do
+    it 'raises SyntaxError' do
+      -> do
+        eval <<-CODE
+          def test
+            B = 1
+          end
+        CODE
+      end.should raise_error(SyntaxError, /dynamic constant assignment/)
+    end
+  end
+end