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_rake_application.rb
    path of file: ./repos/rake/test
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require File.expand_path("../helper", __FILE_
    
  def test_display_exception_details_cause
    begin
      raise "cause a"
    rescue
      begin
        raise "cause b"
      rescue => ex
      end