class RuboCop::Cop::RSpec::MessageSpies


expect(foo).to receive(:bar)
# good
expect(foo).to have_received(:bar)
# bad
@example ‘EnforcedStyle: receive`
expect(foo).to have_received(:bar)
# good
expect(foo).to receive(:bar)
# bad
@example `EnforcedStyle: have_received`
`EnforcedStyle` option and supports `–auto-gen-config`.
This cop can be configured in your configuration using the
Checks that message expectations are set using spies.

def error_message(receiver) 

def error_message(receiver)
  case style
  when :receive
    MSG_RECEIVE
  when :have_received
    format(MSG_HAVE_RECEIVED, source: receiver.source)
  end
end

def on_send(node) 

def on_send(node)
  receive_message_matcher(node) do |receiver, message_matcher|
    return correct_style_detected if preferred_style?(message_matcher)
    add_offense(
      message_matcher,
      location: :selector,
      message: error_message(receiver)
    ) { opposite_style_detected }
  end
end

def preferred_style?(expectation) 

def preferred_style?(expectation)
  expectation.method_name.equal?(style)
end

def receive_message_matcher(node) 

def receive_message_matcher(node)
  return unless (receiver = message_expectation(node))
  receive_message(node) { |match| yield(receiver, match) }
end