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General structure of the database log file
------------------------------------------

Creating a new database file:
Run the test, then copy and modify /dev/shm/newlog.txt

- The first 2 lines of the log file contain special content
  and are excluded from the diff against the actual log.

Line 1: md5sum of image file or "ignore"
Line 2: md5sum of ecc file or "ignore"

- Remove directory path prefix of all occurrences of .iso and .ecc files!


Anatomy of a test case
----------------------

Example:

01 # Scan an image with a simulated hardware failure and 
02 # --ignore-fatal-sense not set.
03
04 if try "scanning image, ignoring simulated hardware failure" scan_with_ignored_hardware_failure; then
05
06   cp $MASTERISO $SIMISO
07   $NEWVER --debug -i$SIMISO --erase "5000:hardware failure" >>$LOGFILE 2>&1
08
09   replace_config ignore-fatal-sense 1
10   extra_args="--debug --sim-cd=$SIMISO --fixed-speed-values"
11   run_regtest scan_with_ignored_hardware_failure "--spinup-delay=0 -s --ignore-fatal-sense" $ISODIR/no.iso  $ISODIR/no.ecc
12 fi

line 01-02: Describe what the test case does and what results are expected.
line 04   : try description symbol
            provides a descriptive text for the test case and defines the symbol/label
            which is part of the database file and the config.txt list.
line 06-07: prepare test files
line 09   : in GUI mode, some settings can only made in the .dvdisaster file,
     	    not with the respective command line switches
line 10   : arguments which work both in GUI mode and command line mode
line 11   : run_regtest symbol args iso_image ecc_file
     	    Runs the regtest.
	    In GUI mode, args is ignored and only the iso_image and ecc_file parameters
	    are passed via the configuration file. extra_args are provided on the
	    command line.
	    In CLI mode, args is prepended with extra_args and appended with switches
	    for the iso_image and the ecc_file and then passed with the program
	    call in the command line.