class RuboCop::Cop::RSpec::NotToNot

end
expect(false).not_to be_true
it ‘…’ do
# good
end
expect(false).to_not be_true
it ‘…’ do
# bad
@example
expectations.
Enforces the usage of the same method on all negative message

def autocorrect(node) 

def autocorrect(node)
  _receiver, method_name, *_args = *node
  lambda do |corrector|
    corrector.replace(node.loc.selector,
                      method_name.equal?(:not_to) ? 'to_not' : 'not_to')
  end
end

def message(node) 

def message(node)
  _receiver, method_name, *_args = *node
  if method_name.equal?(:not_to)
    format(MSG, 'to_not', 'not_to')
  else
    format(MSG, 'not_to', 'to_not')
  end
end

def on_send(node) 

def on_send(node)
  _receiver, method_name, *_args = *node
  return unless METHOD_NAMES.include?(method_name)
  return if style.equal?(method_name)
  add_offense(node, :expression)
end