AutoCorrect breaks class name comparison

[denisenkom]

RuboCop auto-correction feature makes invalid correction for class name comparison. For example it replaces obj.class.name == cls_name with obj.instance_of?(cls_name). This is not correct since instance_of() method expects a class as a parameter and not a name of the class. As a result after this replacement code fails with the following error:

Traceback (most recent call last):
	1: from test.rb:2:in `<main>'
test.rb:2:in `instance_of?': class or module required (TypeError)

Expected behavior

RuboCop should not perform such replacement, for example obj.class.name == cls_name should stay unmodified.

Actual behavior

RuboCop replaced obj.class.name == cls_name with invalid Ruby code: obj.instance_of?(cls_name)

Steps to reproduce the problem

Create test.rb file with the following content:

cls_name = 'String'
raise 'Failed' unless 'somestr'.class.name == cls_name
puts 'SUCCESS'

Verify that created file works by running ruby test.rb, it should output SUCCESS

Run RubuCop auto-correction: rubocop --auto-correct

Now if you run ruby test.rb it will fail with error:

Traceback (most recent call last):
	1: from test.rb:2:in `<main>'
test.rb:2:in `instance_of?': class or module required (TypeError)

RuboCop version

~/.runtimes/Ruby27x/lib/ruby/gems/2.7.0/gems/rubocop-1.49.0/exe/rubocop -V
1.49.0 (using Parser 3.2.2.0, rubocop-ast 1.28.0, running on ruby 2.7.3) [x86_64-darwin21]