Disable VERBOSE warnings in test stubs (whitesmith#466)

To prevent warning during tests while we deliberately override certain methods.

Warnings include:
rubycritic/test/fakefs_helper.rb:8: warning: method redefined; discarding old flock
rubycritic/.bundle/ruby/3.2.0/gems/fakefs-2.4.0/lib/fakefs/file.rb:586: warning: previous definition of flock was here
rubycritic/test/lib/rubycritic/commands/compare_test.rb:12: warning: method redefined; discarding old current_branch
rubycritic/lib/rubycritic/source_control_systems/git.rb:82: warning: previous definition of current_branch was here

See: whitesmith#465

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 * [CHANGE] Fix test warning related to `cucumber_opts` declaration (by [@faisal][])
 * [BUGFIX] Stop using long-deprecated MiniTest module name, removed in 5.19.0 (by [@faisal][])
+* [CHANGE] Disable VERBOSE warnings in test stubs (by [@fbuys][])
 
 # v4.8.1 / 2023-05-17 [(commits)](https://github.com/whitesmith/rubycritic/compare/v4.8.0...v4.8.1)
 

test/fakefs_helper.rb

@@ -5,9 +5,13 @@
 
 module FakeFS
   class File < StringIO
+    # $VERBOSE = nil to suppress warnings when we overrie flock.
+    original_verbose = $VERBOSE
+    $VERBOSE = nil
     def flock(*)
       true
     end
+    $VERBOSE = original_verbose
   end
 end
 

test/lib/rubycritic/commands/compare_test.rb

@@ -9,9 +9,13 @@
 module RubyCritic
   module SourceControlSystem
     class Git < Base
+      # $VERBOSE = nil to suppress warnings when we overrie self.current_branch.
+      original_verbose = $VERBOSE
+      $VERBOSE = nil
       def self.current_branch
         'feature_branch'
       end
+      $VERBOSE = original_verbose
     end
   end