; Erase gap test 11.
;
; Test 11: Check invalid trailing record length within gap.
;
; Operations:
;   - write   36 byte record "AA"
;   - write 4788 byte record "BB"
;   - write   32 byte record "CC"
;   - rewind
;   - write   32 byte record "DD"
;   - write gap
;
; Record "DD" overwrites record "AA", with "DD"'s trailing length marker of 32
; immediately followed by "AA"'s trailing length marker of 36.  The gap scan
; finds a valid leading length marker of 36.  However, the trailing length
; marker, which falls within the gap area, is "BBBB" and does not match, so the
; tape is considered to be invalid, and the rest of the scan is skipped.  The
; nominal 4800-byte gap overwrites the trailing length marker and record "BB"
; exactly, leaving record "CC" untouched.
; 
; Correct tape:
;   Processing tape file 1
;   Obj 1, position 0, erase gap, length = 4800 (0x12C0)
;   Obj 2, position 4800, record 1, length = 32 (0x20)
;   Obj 3, position 4840, erase gap, length = 4800 (0x12C0)
;   Obj 4, position 9640, record 2, length = 32 (0x20)
;   End of physical tape


attach -n msc0 gap-test-11.tape


go until '@' ; reply '10 SEL0\r'

go until '@' ; reply '20 SD AA 18\r'
go until '@' ; reply '25 WR\r'

go until '@' ; reply '30 SD BB 2394\r'
go until '@' ; reply '35 WR\r'

go until '@' ; reply '40 SD CC 16\r'
go until '@' ; reply '45 WR\r'

go until '@' ; reply '50 REW\r'
go until '@' ; reply '51 GOSB 3000\r'

go until '@' ; reply '60 SD DD 16\r'
go until '@' ; reply '65 WR\r'

go until '@' ; reply '70 GAP\r'

go until '@' ; reply '1000 STOP\r'

go until '@' ; reply '2000 SFC 2000\r'
go until '@' ; reply '2010 RTN\r'

go until '@' ; reply '3000 SFC 3000\r'
go until '@' ; reply '3010 SC 3010 100100\r'
go until '@' ; reply '3020 RTN\r'

go until '@' ; reply 'GO\r'

go until '@' ; reply 'BYE\r'

go


detach msc0

! mtdump gap-test-11.tape > gap-test-11.log