Add `Style/RedundantFreeze` to remove redudant `.freeze`

Since Rails 6.0 will support Ruby 2.4.1 or higher
`# frozen_string_literal: true` magic comment is enough to make string object frozen.
This magic comment is enabled by `Style/FrozenStringLiteralComment` cop.

* Exclude these files not to auto correct false positive `Regexp#freeze`
 - 'actionpack/lib/action_dispatch/journey/router/utils.rb'
 - 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb'

It has been fixed by https://github.com/rubocop-hq/rubocop/pull/6333
Once the newer version of RuboCop released and available at Code Climate these exclude entries should be removed.

* Replace `String#freeze` with `String#-@` manually if explicit frozen string objects are required

 - 'actionpack/test/controller/test_case_test.rb'
 - 'activemodel/test/cases/type/string_test.rb'
 - 'activesupport/lib/active_support/core_ext/string/strip.rb'
 - 'activesupport/test/core_ext/string_ext_test.rb'
 - 'railties/test/generators/actions_test.rb'

1 files changed, 8 insertions, 8 deletions

diff --git a/actionview/lib/action_view/helpers/date_helper.rb b/actionview/lib/action_view/helpers/date_helper.rb
index ecdad14f90..9d5e5eaba3 100644
--- a/actionview/lib/action_view/helpers/date_helper.rb
+++ b/actionview/lib/action_view/helpers/date_helper.rb
@@ -684,7 +684,7 @@ module ActionView
         format   = options.delete(:format) || :long
         content  = args.first || I18n.l(date_or_time, format: format)
 
-        content_tag("time".freeze, content, options.reverse_merge(datetime: date_or_time.iso8601), &block)
+        content_tag("time", content, options.reverse_merge(datetime: date_or_time.iso8601), &block)
       end
 
       private
@@ -703,7 +703,7 @@ module ActionView
     class DateTimeSelector #:nodoc:
       include ActionView::Helpers::TagHelper
 
-      DEFAULT_PREFIX = "date".freeze
+      DEFAULT_PREFIX = "date"
       POSITION = {
         year: 1, month: 2, day: 3, hour: 4, minute: 5, second: 6
       }.freeze
@@ -824,7 +824,7 @@ module ActionView
           1.upto(12) do |month_number|
             options = { value: month_number }
             options[:selected] = "selected" if month == month_number
-            month_options << content_tag("option".freeze, month_name(month_number), options) + "\n"
+            month_options << content_tag("option", month_name(month_number), options) + "\n"
           end
           build_select(:month, month_options.join)
         end
@@ -1006,7 +1006,7 @@ module ActionView
             tag_options[:selected] = "selected" if selected == i
             text = options[:use_two_digit_numbers] ? sprintf("%02d", i) : value
             text = options[:ampm] ? AMPM_TRANSLATION[i] : text
-            select_options << content_tag("option".freeze, text, tag_options)
+            select_options << content_tag("option", text, tag_options)
           end
 
           (select_options.join("\n") + "\n").html_safe
@@ -1034,7 +1034,7 @@ module ActionView
             tag_options = { value: value }
             tag_options[:selected] = "selected" if selected == value
             text = year_name(value)
-            select_options << content_tag("option".freeze, text, tag_options)
+            select_options << content_tag("option", text, tag_options)
           end
 
           (select_options.join("\n") + "\n").html_safe
@@ -1054,11 +1054,11 @@ module ActionView
           select_options[:class] = css_class_attribute(type, select_options[:class], @options[:with_css_classes]) if @options[:with_css_classes]
 
           select_html = +"\n"
-          select_html << content_tag("option".freeze, "", value: "") + "\n" if @options[:include_blank]
+          select_html << content_tag("option", "", value: "") + "\n" if @options[:include_blank]
           select_html << prompt_option_tag(type, @options[:prompt]) + "\n" if @options[:prompt]
           select_html << select_options_as_html
 
-          (content_tag("select".freeze, select_html.html_safe, select_options) + "\n").html_safe
+          (content_tag("select", select_html.html_safe, select_options) + "\n").html_safe
         end
 
         # Builds the css class value for the select element
@@ -1091,7 +1091,7 @@ module ActionView
               I18n.translate(:"datetime.prompts.#{type}", locale: @options[:locale])
             end
 
-          prompt ? content_tag("option".freeze, prompt, value: "") : ""
+          prompt ? content_tag("option", prompt, value: "") : ""
         end
 
         # Builds hidden input tag for date part and value.