Confirm the new string is actually mutable

headius · Sep 8, 2023 · 17a07e4 · 17a07e4
1 parent 373dc0b
commit 17a07e4
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/spec/ruby/core/string/uplus_spec.rb b/spec/ruby/core/string/uplus_spec.rb
@@ -7,6 +7,9 @@
 
     output.should_not.frozen?
     output.should == 'foo'
+
+    output << 'bar'
+    output.should == 'foobar'
   end
 
   it 'returns self if the String is not frozen' do