1 files changed, 5 insertions, 3 deletions
diff --git a/railties/lib/rails/code_statistics_calculator.rb b/railties/lib/rails/code_statistics_calculator.rb
index fad13e8517..85f86bdbd0 100644
--- a/railties/lib/rails/code_statistics_calculator.rb
+++ b/railties/lib/rails/code_statistics_calculator.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CodeStatisticsCalculator #:nodoc:
   attr_reader :lines, :code_lines, :classes, :methods
 
@@ -43,7 +45,7 @@ class CodeStatisticsCalculator #:nodoc:
 
   def add_by_file_path(file_path)
     File.open(file_path) do |f|
-      self.add_by_io(f, file_type(file_path))
+      add_by_io(f, file_type(file_path))
     end
   end
 
@@ -77,10 +79,10 @@ class CodeStatisticsCalculator #:nodoc:
 
   private
     def file_type(file_path)
-      if file_path.end_with? '_test.rb'
+      if file_path.end_with? "_test.rb"
         :minitest
       else
-        File.extname(file_path).sub(/\A\./, '').downcase.to_sym
+        File.extname(file_path).sub(/\A\./, "").downcase.to_sym
       end
     end
 end