diff options
| -rw-r--r-- | lib/delegate.rb | 9 | ||||
| -rw-r--r-- | test/test_delegate.rb | 14 |
2 files changed, 22 insertions, 1 deletions
diff --git a/lib/delegate.rb b/lib/delegate.rb index 63657646e1..1587c7e3bb 100644 --- a/lib/delegate.rb +++ b/lib/delegate.rb @@ -103,13 +103,20 @@ class Delegator < BasicObject r end + KERNEL_RESPOND_TO = ::Kernel.instance_method(:respond_to?) + private_constant :KERNEL_RESPOND_TO + # Handle BasicObject instances private def target_respond_to?(target, m, include_private) case target when Object target.respond_to?(m, include_private) else - ::Kernel.instance_method(:respond_to?).bind_call(target, m, include_private) + if KERNEL_RESPOND_TO.bind_call(target, :respond_to?) + target.respond_to?(m, include_private) + else + KERNEL_RESPOND_TO.bind_call(target, m, include_private) + end end end diff --git a/test/test_delegate.rb b/test/test_delegate.rb index 5660adc590..426a647808 100644 --- a/test/test_delegate.rb +++ b/test/test_delegate.rb @@ -331,6 +331,20 @@ class TestDelegateClass < Test::Unit::TestCase assert_raise(NoMethodError, /undefined method `foo' for/) { delegate.foo } end + def test_basicobject_respond_to + o = BasicObject.new + def o.bar + nil + end + + def o.respond_to?(method, include_private=false) + return false if method == :bar + ::Kernel.instance_method(:respond_to?).bind_call(self, method, include_private) + end + delegate = SimpleDelegator.new(o) + refute delegate.respond_to?(:bar) + end + def test_keyword_argument k = EnvUtil.labeled_class("Target") do def test(a, k:) [a, k]; end |