Add more assertions for NotImplementedError of instance method
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64495 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Add more assertions for NotImplementedError of instance method
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64495 b2dd03c8-39d4-4d8f-98ff-823fe69b080e