#1107 Somehow breaks my specs

[FunkyloverOne]

Subject of the issue

I'm getting the following error on perfectly normal object:

ArgumentError:
       The be_a_kind_of matcher requires that the actual object responds to either #kind_of? or #is_a? methods but it responds to neigher of two methods.

Environment

• Ruby version: 2.5.1
• rspec-expectations version: 3.8.3

Steps to reproduce

I do not really know yet, I will investigate more on it and provide details.

Actual behavior

value.respond_to?(:is_a?)
#=> true
::Kernel.instance_method(:respond_to?).bind(value).call(:is_a?)
#=> false

P.S an error message has a typo - neigher.

[JonRowe]

Hm. Interesting. Do you feel like patching this? We could rescue the NoMethodError instead which would circumvent the need to rely on a check

[dem]

The same issue for me, which not exists on rspec-expectations version: 3.8.2

[FunkyloverOne]

@JonRowe sounds good to me! I will make a PR.

[p-mongo]

#1107 also broke Mongoid test suite, it looks like the change was meant to be backwards compatible?