Class: RuboCop::Cop::InternalAffairs::RedundantLetRuboCopConfigNew

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
RangeHelp
Defined in:
lib/rubocop/cop/internal_affairs/redundant_let_rubocop_config_new.rb

Overview

Checks that ‘let` is `RuboCop::Config.new` with no arguments.

Examples:

# bad
RSpec.describe RuboCop::Cop::Department::Foo, :config do
  let(:config) { RuboCop::Config.new }
end

# good
RSpec.describe RuboCop::Cop::Department::Foo, :config do
end

RSpec.describe RuboCop::Cop::Department::Foo, :config do
  let(:config) { RuboCop::Config.new(argument) }
end

Constant Summary collapse

MSG = 
'Remove `let` that is `RuboCop::Config.new` with no arguments%<additional_message>s.'

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Methods inherited from Base

#active_support_extensions_enabled?, #add_global_offense, #add_offense, #always_autocorrect?, autocorrect_incompatible_with, badge, #begin_investigation, callbacks_needed, #callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #contextual_autocorrect?, #cop_config, cop_name, #cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, #inspect, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_new_investigation, #on_other_file, #parse, #parser_engine, #ready, #relevant_file?, requires_gem, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from ExcludeLimit

#exclude_limit

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #autocorrect_with_disable_uncorrectable?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from RuboCop::Cop::IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

silence_warnings

Constructor Details

This class inherits a constructor from RuboCop::Cop::Base

Instance Method Details

#let_rubocop_config_new?(node) ⇒ Object 



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# File 'lib/rubocop/cop/internal_affairs/redundant_let_rubocop_config_new.rb', line 29

def_node_matcher :let_rubocop_config_new?, <<~PATTERN
  (block
    (send nil? :let
      (sym :config))
    (args)
    {
      (send
        (const
          (const nil? :RuboCop) :Config) :new)
      (send
        (const
          (const nil? :RuboCop) :Config) :new
            (hash (pair (send (send (send nil? :described_class) :badge) :to_s)
              (send nil? :cop_config))))
    }
  )
PATTERN

#on_block(node) ⇒ Object 



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# File 'lib/rubocop/cop/internal_affairs/redundant_let_rubocop_config_new.rb', line 47

def on_block(node)
  return unless let_rubocop_config_new?(node)

  describe = find_describe_method_node(node)

  unless (exist_config = describe.last_argument.source == ':config')
    additional_message = ' and specify `:config` in `describe`'
  end

  message = format(MSG, additional_message: additional_message)

  add_offense(node, message: message) do |corrector|
    corrector.remove(range_by_whole_lines(node.source_range, include_final_newline: true))

    corrector.insert_after(describe.last_argument, ', :config') unless exist_config
  end
end