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_package_tar_header.rb
    path of file: ./repos/rubygems/test/rubygems
    
    the code of the file until where you have to start completion: # frozen_string_litera
    
  def test_initialize
    assert_equal "",      @tar_header.checksum, "checksum"
    assert_equal 1,       @tar_header.devmajor, "devmajor"
    assert_equal 2,       @tar_header.devminor, "devminor"
    assert_equal 10_000, @tar_header.gid, "gid"
    assert_equal "group", @tar_header.gname,    "gname"
    assert_equal "link",  @tar_header.linkname, "linkname"
    assert_equal "ustar", @tar_header.magic,    "magic"
    assert_equal 0o644, @tar_header.mode, "mode"
    assert_equal 12_345, @tar_header.mtime, "mtime"
    assert_equal "x",     @tar_header.name,     "name"
    assert_equal "y",     @tar_header.prefix,   "prefix"
    assert_equal 100,     @tar_header.size,     "size"
    assert_equal "0",     @tar_header.typeflag, "typeflag"
    assert_equal 1000,    @tar_header.uid,      "uid"
    assert_equal "user",  @tar_header.uname,    "uname"
    assert_equal "00",    @tar_header.version,  "version"

    refute_empty @tar_header, "empty"
  end