Remove customization from RSpec/EmptyExampleGroup

The customization is now made via .rubocop.yml configuration, i.e.:

    RSpec:
      Language:
        Includes:
          Example:
          - it_has_special_behavior

Author: pirj

CHANGELOG.md

@@ -6,6 +6,7 @@
 * Retire `RSpec/InvalidPredicateMatcher` cop. ([@pirj][])
 * Remove the code responsible for filtering files to inspect. ([@pirj][])
 * Make RSpec language elements configurable. ([@sl4vr][])
+* Remove `CustomIncludeMethods` `RSpec/EmptyExampleGroup` option in favour of the new RSpec DSL configuration. ([@pirj][])
 
 ## 2.0.0.pre (2020-10-22)
 

config/default.yml

@@ -207,8 +207,8 @@ RSpec/Dialect:
 RSpec/EmptyExampleGroup:
   Description: Checks if an example group does not include any tests.
   Enabled: true
-  CustomIncludeMethods: []
   VersionAdded: '1.7'
+  VersionChanged: '2.0'
   StyleGuide: https://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/EmptyExampleGroup
 
 RSpec/EmptyHook:

docs/modules/ROOT/pages/cops_rspec.adoc

@@ -729,13 +729,11 @@ end
 | Yes
 | No
 | 1.7
-| -
+| 2.0
 |===
 
 Checks if an example group does not include any tests.
 
-This cop is configurable using the `CustomIncludeMethods` option
-
 === Examples
 
 ==== usage
@@ -772,43 +770,6 @@ describe Bacon do
 end
 ----
 
-==== configuration
-
-[source,ruby]
-----
-# .rubocop.yml
-# RSpec/EmptyExampleGroup:
-#   CustomIncludeMethods:
-#   - include_tests
-
-# spec_helper.rb
-RSpec.configure do |config|
-  config.alias_it_behaves_like_to(:include_tests)
-end
-
-# bacon_spec.rb
-describe Bacon do
-  let(:bacon)      { Bacon.new(chunkiness) }
-  let(:chunkiness) { false                 }
-
-  context 'extra chunky' do   # not flagged by rubocop
-    let(:chunkiness) { true }
-
-    include_tests 'shared tests'
-  end
-end
-----
-
-=== Configurable attributes
-
-|===
-| Name | Default value | Configurable values
-
-| CustomIncludeMethods
-| `[]`
-| Array
-|===
-
 === References
 
 * https://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/EmptyExampleGroup

lib/rubocop/cop/rspec/empty_example_group.rb

@@ -5,8 +5,6 @@ module Cop
     module RSpec
       # Checks if an example group does not include any tests.
       #
-      # This cop is configurable using the `CustomIncludeMethods` option
-      #
       # @example usage
       #
       #   # bad
@@ -37,31 +35,6 @@ module RSpec
       #   describe Bacon do
       #     pending 'will add tests later'
       #   end
-      #
-      # @example configuration
-      #
-      #   # .rubocop.yml
-      #   # RSpec/EmptyExampleGroup:
-      #   #   CustomIncludeMethods:
-      #   #   - include_tests
-      #
-      #   # spec_helper.rb
-      #   RSpec.configure do |config|
-      #     config.alias_it_behaves_like_to(:include_tests)
-      #   end
-      #
-      #   # bacon_spec.rb
-      #   describe Bacon do
-      #     let(:bacon)      { Bacon.new(chunkiness) }
-      #     let(:chunkiness) { false                 }
-      #
-      #     context 'extra chunky' do   # not flagged by rubocop
-      #       let(:chunkiness) { true }
-      #
-      #       include_tests 'shared tests'
-      #     end
-      #   end
-      #
       class EmptyExampleGroup < Base
         MSG = 'Empty example group detected.'
 
@@ -99,7 +72,6 @@ class EmptyExampleGroup < Base
               '{#Examples.all #ExampleGroups.all #Includes.all}'
             )}
             #{send_pattern('{#Examples.all #Includes.all}')}
-            (send nil? #custom_include? ...)
           }
         PATTERN
 
@@ -191,16 +163,6 @@ def conditionals_with_examples?(body)
         def examples_in_branches?(if_node)
           if_node.branches.any? { |branch| examples?(branch) }
         end
-
-        def custom_include?(method_name)
-          custom_include_methods.include?(method_name)
-        end
-
-        def custom_include_methods
-          cop_config
-            .fetch('CustomIncludeMethods', [])
-            .map(&:to_sym)
-        end
       end
     end
   end

spec/rubocop/cop/rspec/base_spec.rb

@@ -118,7 +118,7 @@ def on_block(node)
 
     context 'when `epic` is set as an alias to example group' do
       before do
-        other_cops['RSpec']['Language']['ExampleGroups']['Regular']
+        other_cops.dig('RSpec', 'Language', 'ExampleGroups', 'Regular')
           .push('epic')
       end
 

spec/rubocop/cop/rspec/empty_example_group_spec.rb

@@ -268,8 +268,9 @@
   end
 
   context 'when a custom include method is specified' do
-    let(:cop_config) do
-      { 'CustomIncludeMethods' => %w[it_has_special_behavior] }
+    before do
+      other_cops.dig('RSpec', 'Language', 'Includes', 'Examples')
+        .push('it_has_special_behavior')
     end
 
     it 'ignores an empty example group with a custom include' do