# File test/backup/tc_dos_disks.rb, line 74
        def test_open_url_to_compressed_dsk
                dskname="http://www.apple2.org.za/mirrors/ftp.apple.asimov.net/images/games/adventure/vaults_of_zurich.dsk.gz"
                dsk=DSK.read(dskname)
                assert_equal(:dos,dsk.file_system,"#{dskname} should be DOS 3.3 format")
                assert(dsk.files.length>0,"#{dskname} should have at least one file")
                
                hello_file=dsk.files["HELLO"]
                assert(hello_file!=nil,"#{dskname} should have a file called HELLO")
                assert(hello_file.instance_of?(AppleSoftFile),"HELLO should be an AppleSoft file")
        end