Update to ruby/spec@4f59d86

spec/ruby/language/variables_spec.rb

@@ -796,3 +796,32 @@ describe 'Local variable shadowing' do
     end
   end
 end
+
+describe 'Allowed characters' do
+  ruby_version_is "2.6" do
+    # new feature in 2.6 -- https://bugs.ruby-lang.org/issues/13770
+    it 'does not allow non-ASCII upcased characters at the beginning' do
+      -> do
+        eval <<-CODE
+          def test
+            ἍBB = 1
+          end
+        CODE
+      end.should raise_error(SyntaxError, /dynamic constant assignment/)
+    end
+  end
+
+  it 'allows non-ASCII lowercased characters at the beginning' do
+    result = nil
+
+    eval <<-CODE
+      def test
+        μ = 1
+      end
+
+      result = test
+    CODE
+
+    result.should == 1
+  end
+end