diff options
Diffstat (limited to 'test/t/kernel.rb')
| -rw-r--r-- | test/t/kernel.rb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/test/t/kernel.rb b/test/t/kernel.rb index 1e48069f2..ecfb863a8 100644 --- a/test/t/kernel.rb +++ b/test/t/kernel.rb @@ -240,6 +240,9 @@ assert('Kernel#extend', '15.3.1.3.13') do assert_true a.respond_to?(:test_method) assert_false b.respond_to?(:test_method) + + assert_raise(FrozenError) { Object.new.freeze.extend(Test4ExtendModule) } + assert_raise(FrozenError, TypeError) { :sym.extend(Test4ExtendModule) } end assert('Kernel#extend works on toplevel', '15.3.1.3.13') do |