Extract constant

Author: shanecav84

lib/rspec/rails/example/system_example_group.rb

@@ -11,6 +11,9 @@ module SystemExampleGroup
       include ActionDispatch::Assertions
       include ActionController::TemplateAssertions
 
+      # Special characters to translate into underscores for #method_name
+      CHARS_TO_TRANSLATE = ['/', '.', ':', ',', "'", '"', " "].freeze
+
       # @private
       module BlowAwayAfterTeardownHook
         # @private
@@ -35,7 +38,7 @@ def method_name
           self.class.name.underscore,
           RSpec.current_example.description.underscore,
           rand(1000)
-        ].join("_").tr('/.:,\'" ', "_")
+        ].join("_").tr(CHARS_TO_TRANSLATE.join, "_")
       end
 
       # Delegates to `Rails.application`.

spec/rspec/rails/example/system_example_group_spec.rb

@@ -10,7 +10,7 @@ module RSpec::Rails
           group = RSpec::Core::ExampleGroup.describe ActionPack do
             include SystemExampleGroup
           end
-          ['/', '.', ':', ',', "'", '"', ' '].each do |char|
+          SystemExampleGroup::CHARS_TO_TRANSLATE.each do |char|
             example = group.new
             example_class_mock = double('name' => "method#{char}name")
             allow(example).to receive(:class).and_return(example_class_mock)