Fix reek problems or whitelist

config/reek.yml

@@ -25,11 +25,13 @@ FeatureEnvy:
   enabled: true
   exclude:
   - Mutant::CLI#parse
+  - Mutant::CLI#add_strategies
   - Mutant::Matcher::Method::Instance#match?
   - Mutant::Matcher::Method::Singleton#receiver?
   - Mutant::Mutation::Evil#success?
   - Mutant::Mutation::Neutral#success?
   - Mutant::Reporter::CLI#subject_results
+  - Mutant::Strategy::Rspec#options
 IrresponsibleModule:
   enabled: true
   exclude: []
@@ -78,6 +80,8 @@ TooManyStatements:
   exclude:
   - Mutant#self.singleton_subclass_instance
   - Mutant::CLI#parse
+  - Mutant::CLI#add_options
+  - Mutant::CLI#add_strategies
   - Mutant::Killer::Rspec#run
   - Mutant::Reporter::CLI#colorized_diff
   - Mutant::Reporter::CLI::Printer::Config::Runner#run
@@ -127,4 +131,8 @@ UtilityFunction:
   - Mutant::Mutation::Evil#success?
   - Mutant::Mutation::Neutral#success?
   - Mutant::NodeHelpers#s
+  - Mutant::Strategy::Rspec#configuration
+  - Mutant::Strategy::Rspec#options
+  - Mutant::Strategy::Rspec#world
+
   max_helper_calls: 0

lib/mutant/context/scope.rb

@@ -96,9 +96,8 @@ module Mutant
       # @api private
       #
       def match_prefixes
-        names = name_nesting
-        names.length.downto(1).map do |last|
-          names[0...last].join('::')
+        name_nesting.length.downto(1).map do |last|
+          name_nesting[0...last].join('::')
         end
       end
       memoize :match_prefixes