Convert all those controller tests to the new Rails 5 syntax

rewrite.rb

require 'parser/current'
require 'byebug'

class FixGets < Parser::Rewriter
  def on_send(node)
    receiver_node, method_name, *args = *node

    if [:get, :patch, :post, :put, :delete, :mobile_get].include?(method_name)
      if args.size > 1 && !args[1].loc.expression.source.include?("xhr: true")
        rub = args[1].loc.expression.source

        is_method = args[1].to_s.start_with?("(send")
        is_var    = args[1].to_s.start_with?("(lvar")
        is_ivar   = args[1].to_s.start_with?("(ivar")
        is_const  = args[1].to_s.start_with?("(const")
        is_hash_with_brackets = rub.strip.start_with?("{") && rub.strip.end_with?("}")

        if is_method || is_var || is_ivar || is_const || is_hash_with_brackets
          new_syntax = "params: #{rub}"
        else
          new_syntax = "params: { #{rub} }"
        end

        replace(args[1].loc.expression, new_syntax)
      end
    end
  end
end

ARGV.each do |file|
  if File.exists?(file)
    code = File.read(file)

    buffer        = Parser::Source::Buffer.new('(example)')
    buffer.source = code

    parser        = Parser::CurrentRuby.new
    ast           = parser.parse(buffer)

    rewriter      = FixGets.new
    rewriter.rewrite(buffer, ast)

    # Rewrite the AST, returns a String with the new form.
    File.open(file, "w") { |f| f.write(rewriter.rewrite(buffer, ast)) }
  else
    puts "Skipping `#{file}`, not a file"
  end
end