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Branching for libisoburn release 1.4.2

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------------------------------------------------------------------------------
http:libburnia-project.org
------------------------------------------------------------------------------
libisoburn/releng. By George Danchev <danchev@spnet.net>
and Thomas Schmitt <scdbackup@gmx.net>
Test suite for xorriso and libburnia libraries.
Copyright (C) 2011 - 2012 George Danchev, Thomas Schmitt
Provided under GPL version 2 or later.
------------------------------------------------------------------------------
The impatient tester will build libisoburn according to its README and then do
cd ./releng
./run_all_auto -x ../xorriso/xorriso
More patient testers will first read the following description.
Those who simply lack the interpreter /bin/bash, may do
./change_shell_to_use
and then retry.
The test suite
Directory ./releng of libisoburn contains a collection of test scripts and
auxiliary data. They exercise some typical use cases of building libisoburn
applications and running the ISO 9660 filesystem manipulation and CD/DVD/BD
burn program xorriso.
It is assumed that libburn and libisofs are installed, so that libisoburn
can be configured and built. It is not mandatory that libisoburn is already
installed. The tests may use an installed xorriso program as well as a
freshly built one.
The test scripts explicitely demand /bin/bash as interpreter, although they
would run on certain other shells too. If you get an error message like
./run_all_auto: not found
then consider to install /bin/bash.
If you decide against that, see below "Alternative Shells".
There are two groups of test scripts:
auto_* gets started and watched by script run_all_auto.
These tests have a moderate resource consumption and do
not cause mechanical movements of drive trays.
manual_* gets started by the user if desired.
Manual tests may create larger sets of temporary files,
may download test data from the internet, may need
system privileges beyond the reach of a sandbox user,
and operate the mechanics of a CD drive.
Running automated tests
The test scripts expect to get run while the working directory is
./releng
of a libisoburn source tree. E.g.: libisoburn-1.1.4/releng
They create all their temporary files underneath
./releng/releng_generated_data
Some of these files are persistent between tests.
Nevertheless it is safe to empty ./releng/releng_generated_data after
tests are done. The directory itself must be kept.
To run the unobtrusive automatic tests, build libisoburn and xorriso,
go to directory ./releng, and execute
./run_all_auto -x ../xorriso/xorriso
or if you want to use an installed xorriso program:
./run_all_auto -x $(which xorriso)
./run_all_auto -x $(type -p xorriso)
There are several options which work with run_all_auto and any single test.
-x absolute or relative path to xorriso binary to be run.
-k keep self-generated data.
-c cleanup temporary data kept from previous run and exit.
-f simulate failure.
-h print this help text.
-- end of general options, begin of test specific options.
After option "--", there may be given options which are specific to
particular manually executable test scripts.
Manually executable tests
Currently there are the following tests which should have the attention of
the user or require sysadmin considerations before they are run:
./manual_devices -x ../xorriso/xorriso [-- [--dev device_file_to_use]
[--priv_cmd 'command [arg [arg ...]]']]
Exercises listing of all accessible optical drives and the examination of
a one of these drives. The user needs the permission to operate the CD
drives. This might involve the need for superuser authority.
The media tray of the examined drive will get loaded if it is not already.
If no option --dev is given, then the user gets asked which of the listed
drives to examine more closely.
If a privilege command and optional arguments are given with --priv_cmd,
then this command and arguments are used to launch the xorriso runs.
Command and arguments must be single words and be submitted altogether
as one single argument. On Solaris use: --priv_cmd pfexec
./manual_burn -x ../xorriso/xorriso [-- [--dev device_file_to_use]
[--priv_cmd 'command [arg [arg ...]]']
[--what ...directory...] [--any_media]]
Burns the content of the directory given with --what onto re-usable
media: CD-RW, DVD-RW, DVD-RAM, DVD+RW, BD-RE.
Other media types get refused, unless option --any_media is given.
Data, which are possibly present on the media, get overwritten.
The result gets check read and compared with the state of the input
directory. MD5 mismatch causes a test failure. Differences to the directory
state are reported but still regarded as success.
If a privilege command and optional arguments are given with --priv_cmd,
then this command and arguments are used to launch the xorriso runs.
Command and arguments must be single words and be submitted altogether
as one single argument. On Solaris use:
--priv_cmd pfexec
./manual_isojigdo -x ../xorriso/xorriso
Exercises the production of a bootable Debian GNU/Linux image and its Jigdo
files. This test downloads a Debian daily image for i386 of about 270 MB,
extracts its content and composes a new image. Thus it needs about 850 MB
of disk space in releng/releng_generated_data when unpacked. Adding the daily
image size itself, the total space used would peak at about 1.2 GB.
This test will only work with GNU xorriso or if libjte was installed already
when libisofs was built. Further it needs the program jigit-mkimage. Both
are part of package jigit, version >= 1.18, available at:
http://www.einval.com/~steve/software/JTE/
Currently jigit builds only in GNU environments.
Any auto_* script can be run on its own. Some of them demand option -x.
All general options are accepted.
./auto_cxx
Not included in GNU xorriso.
Exercises inclusion of xorriso/xorriso.h and libisoburn/libisoburn.h
in C++ programs and linking of the libraries. It might be necessary
to set compiler options by shell variable CFLAGS before running the test.
It might be necessary to hand over the install directory of libburn and
libisofs in shell variable LD_LIBRARY_PATH.
E.g. if on FreeBSD the include headers libisofs.h , libburn.h are not found:
export CFLAGS="-I/usr/local/include"
E.g. on GNU/Hurd, where libburn and libisofs are not found by the linker:
export LD_LIBRARY_PATH="/usr/local/lib"
./auto_isocontent -x ../xorriso/xorriso
Tests whether xorriso is able to record and restore two familes of
hard links.
./auto_printsize -x ../xorriso/xorriso
Tests how long xorriso needs to compose a medium sized directory tree.
If programs mkisofs and/or genisomage are availaible, then the same test
is done with them.
----------------------------------------------------------------------------
What to do with FAIL results
The text output of the automatic tests is recorded in file
releng_generated_data/log.run_all_auto
Script ./run_all_auto will detect failure of particular tests and report
lines from the log file which contain problem indicating keywords:
NEVER,ABORT,FATAL,FAILURE,MISHAP,SORRY,WARNING,HINT,FAIL,ERROR,WRONG
If the program messages in log.run_all_auto do not explain the failure,
please contact mailing list libburn-hackers@pykix.org .
----------------------------------------------------------------------------
Alternative Shells
If you decided against installing /bin/bash, you may try to use your
current $SHELL by running
./change_shell_to_use
which will modify the test scripts named run_all_auto , auto_* ,manual_*.
Known to be suitable are the following shells
GNU/Linux: /bin/bash
FreeBSD 8: /bin/sh
Solaris: /bin/bash , /bin/i86/ksh93
In general, the shell should have Bourne shell ancestry.
The script does not choose an interpreter explicitely and is safe to be run
inline:
. ./change_shell_to_use
One may set any interpreter path by running a sub shell and changing its
variable SHELL. E.g. by:
( SHELL=/bin/my_shell" ; . ./change_shell_to_use )
----------------------------------------------------------------------------
Creating a new test script
If you want to provide an own test, manual or auto, then first invent a name
for it
test_name="releng/manual_"...some.name...
or
test_name="releng/auto_"...some.name...
Then copy file releng/template_new to $test_name.
Edit $test_name and process any line that begins by "# === TEMPLATE:".
Do what the line prescribes and then remove it from the script. You are
not done as long as such a line remains.
Your test must not start if no file
./inc/releng_getopts.inc
exists, i.e. if the current working directory is not ./releng.
If your test creates own files on disk, then it must do this underneath
directory
./releng_generated_data/$test_name (or $GEN_DATA_DIR, see below).
In case of failure, issue a line to stdout that begins by the word "FAIL",
followed by " : " and the name of the test (e.g. $SELF, see below).
Make sure that the test script finally returns a non-zero exit value.
This value should be between 1 and 28. Each type of failure should have its
own exit value.
Predefined are:
31 = Unknown option or unusable argument with known option
30 = Unexpected state of own directory for self generated files
29 = Not in ./releng directory or missing essential parts of ./releng
When exiting prematurely, make sure to call function cleanup.
Variables, general options, helper functions
The master script run_all_auto sets this variable:
RELENG_SCRIPT_RUN_BY_RUN_ALL_AUTO
1=supervised, the script is run by run_all_auto script
else=standalone, the script is run in standalone mode
The code piece inc/releng_getopts.inc should get executed inline at the
start of a test script. It initializes the following variables and sets
some of them according to the general options of the test suite:
SELF basename $0
GEN_DATA_DIR releng_generated_data/${SELF}
RELENG_XORRISO Path to xorriso binary. "" or "0" means no xorriso.
Default "0". Adjustable by option -x.
SIMULATE_FAILURE 0=normal operation, 1=test script shall simulate a failure.
Default 0. Setable to 1 by option -f.
CLEANUP 0=do not cleanup temporary data, 1=normal operation
Default 1. Setable to 0 by option -k.
SPECIFIC_HELP 0=normal operation, 1=print help text of script and exit 0
Default 0. Setable to 1 by option -h.
The code piece inc/releng_getopts.inc defines the following functions
for use by the single tests:
standalone_or_supervised This is internally called routine to print out
the running mode of the scripts - standalone,
supervised by run_all_auto.
No need to call it from the scripts themselves.
print_help Prints the help text for general options.
check_for_xorriso [-x]
Will exit with value 31 if no path to a xorriso binary
was defined by option -x of ./run_all_auto or a single
test.
Option -x of check_for_xorriso additionally tests whether
the given path leads to an executable program.
cleanup Removes the directory tree GEN_DATA_DIR after making
some safety checks.
boldify Try to set the terminal mode for future output to a more
noticable style of writing.
unboldify Reset terminal mode to normal style of writing.
Specific options
Options which are specific to the test should begin with a double dash.
They may have further arguments.
Implement them in the prepared interpreter loop which begins after line
next_is=ignore
Specific options shall only be interpreted by tests which get run manually.
If you plan to introduce a specific option, look at the description of
existing tests whether one of them would match your needs. In that case,
please re-use the name of that existing option.