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: test_unit_to_mspec.rb
    path of file: ./repos/ruby-next/spec
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# Convert test-unit assertions into mspec should matchers
module TestUnitToMspec
  module CheckSyntax
    module_function

    def call(source)
      new_source = RubyNext::Language.transform(source, rewriters: RubyNext::Language.current_rewriters)

      catch(:valid) do
        eval("BEGIN{throw :valid}\nObject.new.instance_eval { #{new_source} }") # rubocop:disable all
      end
    end
  end

  module MSpecEnvExt
    def assert_equal(a, b)
      a.should == b
    end

    def assert_match(matcher, 
    
    def eval(source, bind = nil, *other)
      source.gsub!(/def test_([\w_]+)/, 'it "\1" do')
      source.gsub!(/class Test(\w+).+$/, 'describe "\1" do')
      new_source = ::RubyNext::Language::Runtime.transform(
        source,
        using: bind&.receiver == TOPLEVEL_BINDING.receiver || bind&.receiver&.is_a?(Module)
      )
      RubyNext.debug_source(new_source, "(#{caller_locations(1, 1).first})")
      super(new_source, bind, *other)
    end
  end

  if ENV["DISABLE_REQUIRE_HOOKS"] != "true" && defined?(RubyNext::Language)
    if RubyNext::Utils.refine_modules?
      refine Kernel do
        # TrufflyRuby doesn't support super in imported methods:
        # https://github.com/oracle/truffleruby/issues/2971
        if RUBY_VERSION >= "3.1.0" && !defined?(TruffleRuby)
          import_methods TestUnitToMspec::KernelExt
        else
          include TestUnitToMspec::KernelExt
        end
      end
    else
      module ::Kernel
        alias_method :eval_without_transpile, :eval

        def eval(src, bind = nil, *other)
          source = src.gsub(/def test_([\w_]+)/, 'it "\1" do')
          source.gsub!(/class Test(\w+).+$/, 'describe "\1" do')
          new_source = ::RubyNext::Language::Runtime.transform(
            source,
            using: bind&.receiver == TOPLEVEL_BINDING.receiver || bind&.receiver&.is_a?(Module)
          )
          RubyNext.debug_source(new_source, "(#{caller_locations(1, 1).first})")
          eval_without_transpile new_source, bind, *other
        end
      end
    end
  end