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_abi.rb
    path of file: ./repos/ruby/test/-ext-
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

return unless RUBY_PATCHLEVEL < 0

class TestABI < Test::Unit::TestCase
  def test_re
    
  def test_enable_abi_check_using_environment_variable
    omit "ABI is not checked" unless abi_checking_supported?

    assert_separately [{ "RUBY_ABI_CHECK" => "1" }], <<~RUBY
      err = assert_raise(LoadError) { require "-test-/abi" }
      assert_match(/incompatible ABI version/, err.message)
      assert_include err.message, "/-test-/abi."
    RUBY
  end