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_backtrace.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/test/ruby
    
    the code of the file until where you have to start completion: # frozen_string_literal: false
require 'test/unit'
require 'tempfile'

class TestBacktrace < Test::Un
    
  def test_caller_locations_label
    assert_equal("#{__method__}", caller_locations(0, 1)[0].label)
    loc, = tap {break caller_locations(0, 1)}
    assert_equal("block in #{__method__}", loc.label)
    begin
      raise
    rescue
      assert_equal("rescue in #{__method__}", caller_locations(0, 1)[0].label)
    end