You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: spec_builders.rb
    path of file: ./repos/vets-api/spec/support
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'active_support/concern'

module SpecBuilders
  extend ActiveSupport::Concern

  module ClassMethods
    def test_method(klass, method, test_data)
      describe "##{method}" do
        test_data.each do |test_datum|
          args = Array.wrap(test_datum[0])
          return_val 
    
    def test_method(klass, method, test_data)
      describe "##{method}" do
        test_data.each do |test_datum|
          args = Array.wrap(test_datum[0])
          return_val = test_datum[1]

          context "with an input of #{args.join(',')}" do
            it "returns #{return_val}" do
              actual =
                if args.length == 1 && args[0].is_a?(Hash) && !args[0].empty?
                  klass.send(method, **args.first)
                else
                  klass.send(method, *args)
                end

              expect(actual).to eq(return_val)
            end
          end
        end
      end