Class: RuboCop::Cop::UmtsCustomCops::PredicateMethodMatcher

Inherits:
RuboCop::Cop
  • Object
show all
Defined in:
lib/umts-custom-cops/predicate_method_matcher.rb

Overview

See the specs for examples.

Constant Summary collapse

MESSAGE = 
'Prefer predicate matcher over checking the return value of a predicate method.'

Instance Method Summary collapse

Instance Method Details

#on_send(node) ⇒ Object 



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# File 'lib/umts-custom-cops/predicate_method_matcher.rb', line 33

def on_send(node)
  ends_with_question_mark = ->(method) { method.to_s.end_with? '?' }

  if generic_equality_expectation(node, &ends_with_question_mark) ||
     boolean_equality_expectation(node, &ends_with_question_mark)

    add_offense node, location: :expression, message: MESSAGE
  end
end