[ruby/irb] Always add input method when calling Irb.new in tests
When passes input method as nil to Context.new through Irb.new, ReidlineInputMethod.new is executed and the global internal state of Reline is rewritten, therefore other tests are failed in the Ruby repository. This commit changes to use TestInputMethod.
[ruby/irb] Always add input method when calling Irb.new in tests
When passes input method as nil to Context.new through Irb.new,
ReidlineInputMethod.new is executed and the global internal state of Reline is
rewritten, therefore other tests are failed in the Ruby repository. This
commit changes to use TestInputMethod.
https://github.com/ruby/irb/commit/010dce9210