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_resolver_api_set.rb
    path of file: ./repos/ruby-packer/ruby/test/rubygems
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require 'rubygems/test_case'

class TestGemResolverAPISet < Gem::TestCase

  def setup
    super

    @DR = Gem::Resolver
    @dep_uri = URI "#{@gem_repo}api/v1/dependencies"
  end

  def test_initialize
    set = @DR::APISet.new

    assert_equal URI('https://rubygems.org/api/v1/dependencies'), set.dep_uri
    assert_e
    
  def test_find_all
    spec_fetcher

    data = [
      { :name         => 'a',
        :number       => '1',
        :platform     => 'ruby',
        :dependencies => [], },
    ]

    @fetcher.data["#{@dep_uri}?gems=a"] = Marshal.dump data

    set = @DR::APISet.new @dep_uri

    a_dep = @DR::DependencyRequest.new dep('a'), nil

    expected = [
      @DR::APISpecification.new(set, data.first)
    ]

    assert_equal expected, set.find_all(a_dep)
  end