Enhance underscore method to filter invalid characters and update test file naming convention

Author: meatball133

bin/generate

@@ -9,6 +9,10 @@ def exercises
     .select { |file| File.directory? File.join('./exercises/practice', file) }
 end
 
+def underscore(str)
+  str.gsub(/[^a-zA-Z0-9_-]/, '').gsub(/[-\s]/, '_').downcase
+end
+
 class VerificationError < StandardError
   MESSAGE = 'The result generated for %<exercise>s, does not match the current file'
 
@@ -39,7 +43,7 @@ end
 parser.on('--verify', 'Verify all exercises') do
   exercises.each do |exercise|
     if File.exist?("./exercises/practice/#{exercise}/.meta/test_template.erb")
-      current_code = File.read("./exercises/practice/#{exercise}/#{exercise}_test.rb")
+      current_code = File.read("./exercises/practice/#{exercise}/#{underscore(exercise)}_test.rb")
       f = File.new("./exercises/practice/#{exercise}/temp_test.rb", 'w+')
       Generator.new(exercise).generate(f.path)
       generated_code = f.read

generatorv2/lib/generator.rb

@@ -21,17 +21,17 @@ def generate(result_path = "./exercises/practice/#{@exercise}/#{underscore(@exer
     additional_json(json)
     json["cases"] = remove_tests(uuid, json)
     status = proc { status }
-    template = ERB.new File.read("./exercises/practice/#{@exercise}/.meta/test_template.erb")
+    template = ERB.new(File.read("./exercises/practice/#{@exercise}/.meta/test_template.erb"), trim_mode: '-')
 
     result = template.result(binding)
 
     File.write(result_path, result)
     RuboCop::CLI.new.
-      run(['-x', '-c', '.rubocop.yml', '-o', NullDevice.path, result_path])
+      run(['-a', '-c', '.rubocop.yml', '-o', NullDevice.path, result_path])
   end
 
   def underscore(str)
-    str.gsub(/[-\s]/, '_').downcase
+    str.gsub(/[^a-zA-Z0-9_\- ]/, '').gsub(/[-\s]/, '_').downcase
   end
 
   def camel_case(str)