class RuboCop::Cop::RSpec::SingleArgumentMessageChain

Checks that chains of messages contain more than one element.

@example

# bad
allow(foo).to receive_message_chain(:bar).and_return(42)

# good
allow(foo).to receive(:bar).and_return(42)

# also good
allow(foo).to receive(:bar, :baz)
allow(foo).to receive("bar.baz")

Constants

MSG

Public Instance Methods

autocorrect(node) click to toggle source
# File lib/rubocop/cop/rspec/single_argument_message_chain.rb, line 37
def autocorrect(node)
  lambda do |corrector|
    corrector.replace(node.loc.selector, replacement(node.method_name))
    message_chain(node) do |arg|
      autocorrect_hash_arg(corrector, arg) if single_key_hash?(arg)
    end
  end
end
on_send(node) click to toggle source
# File lib/rubocop/cop/rspec/single_argument_message_chain.rb, line 27
def on_send(node)
  message_chain(node) do |arg|
    return if arg.to_s.include?('.')

    return if arg.hash_type? && !single_key_hash?(arg)

    add_offense(node, location: :selector)
  end
end

Private Instance Methods

autocorrect_hash_arg(corrector, arg) click to toggle source
# File lib/rubocop/cop/rspec/single_argument_message_chain.rb, line 48
def autocorrect_hash_arg(corrector, arg)
  key, value = *arg.children.first

  corrector.replace(arg.loc.expression, key_to_arg(key))
  corrector.insert_after(arg.parent.loc.end,
                         ".and_return(#{value.source})")
end
key_to_arg(node) click to toggle source
# File lib/rubocop/cop/rspec/single_argument_message_chain.rb, line 56
def key_to_arg(node)
  key, = *node
  node.sym_type? ? ":#{key}" : node.source
end
message(node) click to toggle source
# File lib/rubocop/cop/rspec/single_argument_message_chain.rb, line 65
def message(node)
  method = node.method_name

  format(MSG, recommended: replacement(method), called: method)
end
replacement(method) click to toggle source
# File lib/rubocop/cop/rspec/single_argument_message_chain.rb, line 61
def replacement(method)
  method.equal?(:receive_message_chain) ? 'receive' : 'stub'
end