diff options
Diffstat (limited to 'spec/ruby/core/kernel/define_singleton_method_spec.rb')
-rw-r--r-- | spec/ruby/core/kernel/define_singleton_method_spec.rb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/define_singleton_method_spec.rb b/spec/ruby/core/kernel/define_singleton_method_spec.rb index 2d8b1bf413..24acec84f5 100644 --- a/spec/ruby/core/kernel/define_singleton_method_spec.rb +++ b/spec/ruby/core/kernel/define_singleton_method_spec.rb @@ -111,4 +111,10 @@ describe "Kernel#define_singleton_method" do cls.foo.should == :ok }.should_not raise_error(NoMethodError) end + + it "cannot define a singleton method with a frozen singleton class" do + o = Object.new + o.freeze + -> { o.define_singleton_method(:foo) { 1 } }.should raise_error(FrozenError) + end end |