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-fault-location-detector.rb
    path of file: ./repos/ruby-packer/ruby/gems/test-unit-3.3.4/test
    
    the code of the file until where you have to start completion: # Copyright (C) 2012  Kouhei Sutou <kou@clear-code.com>
#
# License: Ruby's

require "test-unit"
require "test/unit/fault-location-detector"
require "testunit-test-util"

class TestFaultLocationDetector < Test::Unit::TestCase
  include TestUnitTestUtil

  def setup
    @fetcher = Test::Unit::CodeSnippetFetcher.new
  end

  private
  def run_test_case(test_case)
    suite = test_case.suite
    result
    
  def assert_detect(fault, target_line_number)
    detector = Test::Unit::FaultLocationDetector.new(fault, @fetcher)

    expected_backtrace_entries_until_detected = []
    fault.location.each do |backtrace_entry|
      expected_backtrace_entries_until_detected << backtrace_entry
      _, line_number, = detector.split_backtrace_entry(backtrace_entry)
      break if target_line_number == line_number
    end

    actual_backtrace_entries_until_detected = []
    fault.location.each do |backtrace_entry|
      actual_backtrace_entries_until_detected << backtrace_entry
      break if detector.target?(backtrace_entry)
    end

    assert_equal(expected_backtrace_entries_until_detected,
                 actual_backtrace_entries_until_detected)
  end