# File test/tc_dos_disks.rb, line 11
        def test_file_names
                assert(DSK.is_dsk_file?("file.dsk"))
                assert(DSK.is_dsk_file?("file.DSK"))
                assert(DSK.is_dsk_file?("file.dsk.gz"))
                assert(DSK.is_dsk_file?("file.po"))
                assert(DSK.is_dsk_file?("file.po.gz"))
    assert(DSK.is_dsk_file?("file.do"))
    assert(DSK.is_dsk_file?("file.DO.gz"))
                assert(!DSK.is_dsk_file?("file.dsk.zip"))

        end