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_gem_source_specific_file.rb
    path of file: ./repos/truffleruby/test/mri/tests/rubygems
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require_relative "helper"
require "rubygems/source"

class TestGemSourceSpecificFile < Gem::TestCase
  def setup
    super

    @a, @a_gem = util_gem "a", "1"
    @sf = Gem::Source::SpecificFile.new(@a_gem)
  end

  def test_path
    assert_equal @a_gem, @sf.path
  end

  def test_spec
    assert_equal @a, @sf.spec
  end

  def test_load_specs
    assert_equal [@a.name_tuple], @sf.load_specs
  end

  def test_fetch_spec
    assert_equal @a, @sf.fetch_spec(@a.name_tuple)
  end

  def test_fetch_spec_fails_on_unknown_name
    assert_raise Gem::Exception do
      @sf.fetch_spec(nil)
    end
  end

  def test_download
    assert_equal @a_gem, @sf.download(@a)
  end

  def test_spaceship
    a1 = quick_gem 
    
  def test_spaceship
    a1 = quick_gem "a", "1"
    util_build_gem a1

    remote    = Gem::Source.new @gem_repo
    specific  = Gem::Source::SpecificFile.new a1.cache_file
    installed = Gem::Source::Installed.new
    local     = Gem::Source::Local.new

    assert_equal(0, specific.<=>(specific), "specific <=> specific")

    assert_equal(-1, remote.<=>(specific), "remote <=> specific")
    assert_equal(1, specific.<=>(remote), "specific <=> remote")

    assert_equal(-1, specific.<=>(local),     "specific <=> local")
    assert_equal(1, local.    <=>(specific),  "local <=> specific")

    assert_equal(-1, specific. <=>(installed), "specific <=> installed")
    assert_equal(1, installed.<=>(specific), "installed <=> specific")

    a2 = quick_gem "a", "2"
    util_build_gem a2

    b1 = quick_gem "b", "1"
    util_build_gem b1

    a1_source = specific
    a2_source = Gem::Source::SpecificFile.new a2.cache_file
    b1_source = Gem::Source::SpecificFile.new b1.cache_file

    assert_nil       a1_source.<=>(b1_source), "a1_source <=> b1_source"

    assert_equal(-1, a1_source.<=>(a2_source), "a1_source <=> a2_source")
    assert_equal(0, a1_source.<=>(a1_source), "a1_source <=> a1_source")
    assert_equal(1, a2_source.<=>(a1_source), "a2_source <=> a1_source")
  end