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diff --git a/debug/test/HOWTO b/debug/test/HOWTO new file mode 100644 index 0000000..0c9e346 --- /dev/null +++ b/debug/test/HOWTO @@ -0,0 +1,240 @@ +============================================================================== + PARTED REGRESSION TEST HOWTO +============================================================================== + + by Andrew Clausen + + Copyright (C) 2002, 2009-2014, 2019-2023 Free Software Foundation, Inc. + This document may be distributed and/or modified + without restriction + + +CONTENTS +-------- + +1 Introduction +2 What you need +3 Setting up testrc +4 Running the tests + +5 How the tests work + + +------------------------------------------------------------------------------ +1 INTRODUCTION +------------------------------------------------------------------------------ + +This document describes how to safely configure and run the GNU Parted +regression tests. + +Regression tests are a set of "test cases" (or program inputs, whatever), +that have a well defined "correct" and "broken". The idea is to run +regression tests after making changes, to check you didn't break anything. +They are also useful for testing Parted in a new environment... perhaps +you're computer has something peculiar that breaks it. + +Therefore, it's helpful for you to run Parted regression tests. + + +------------------------------------------------------------------------------ +2 WHAT YOU NEED +------------------------------------------------------------------------------ + +You need: + * a spare hard drive (for GNU/Linux... haven't tried GNU/Hurd) + This is because only gendisk block devices can have partition tables. + * msdos partition table support in the kernel (for Linux). (FIXME: can + use our shiny new partprobe!) + * file system support for ext2 and fat + * a reasonably standard GNU system, with diff(1), bash(1), e2fsck(8), + dosfsck(8), etc. + * parted, compiled in it's source directory. i.e. ./configure && make + * a test data source, between 100 and 150 Mb, that contains all + lower-case filenames, and no symlinks. It must have a significant + (i.e. at least 5%) amount of data in a subdirectory. + You can convert filenames to lowercase with: + + cd /data-source + echo 'mv $1 $( echo $1 | tr A-Z a-z )' > tolower + chmod a+x tolower + find | grep [A-Z] | xargs -l1 ./tolower + rm tolower + + (Hint: if you don't trust me, stick an "echo" before mv, and + it'll print out what it's going to do ;) + + +------------------------------------------------------------------------------ +3 SETTING UP TESTRC +------------------------------------------------------------------------------ + +The testrc must be configured for your system. The tests will refuse +to run if you don't. I'll work from top-to-bottom, describing how +to fill in each value: + + +3.1 TEST_HOST +----------------- +This field must match the output of hostname(1). This is just a safety +check, so you don't use the wrong testrc file, and destroy the wrong +data ;) + +Example: + TEST_HOST=mirkwood + +3.2 TEST_PARTED_BASE +------------------------ +This is the directory where you untarred and compiled parted: + +Example: + TEST_PARTED_BASE=~clausen/parted-1.4.20 + +3.3 TEST_PARTED_COMMAND +--------------------------- +You shouldn't need to change this. It's just where to find parted. + +Example: + TEST_PARTED_COMMAND=$TEST_PARTED_BASE/parted/parted + +3.4 TEST_PARTED_CLEARFAT +---------------------------- +You shouldn't need to change this. It's just where to find clearfat, +a special tool to help test Parted's fat code. All it does is zero +out unused (meta)data. (There were cases in the past where stale +metadata was making it appear that parted was working, when it wasn't) + +Example: + TEST_PARTED_CLEARFAT=$TEST_PARTED_BASE/debug/clearfat/clearfat + +3.5 TEST_DRIVE +------------------ +The drive to be completely clobbered! i.e. where testing will occur. +Needless to say, I hope you don't have anything important there. +Example: + +Example: + TEST_DRIVE=/dev/hdc + +3.6 TEST_DRIVE +------------------ +The size of the disk, in megabytes, excluding the fractional part (decimal +point). You can get this from Parted's print output. (Geometry of +/dev/hdc is 0.0-*THIS IS IT*). + +Example: + TEST_DRIVE_SIZE=8063 + +3.7 TEST_MOUNT_POINT +------------------------ +A mount point that the tests can use, to mount $TEST_DRIVE. Obviously, you +need to create it with mkdir(1). + +Example: + TEST_MOUNT_POINT=/mnt/test + +3.8 TEST_DATA +----------------- +Where to get test data from. See advice in section 2 for requirements +on the test data. + +Example: + TEST_DATA=/var/www + +3.9 TEST_DATA_HOLE +---------------------- +A directory inside $TEST_DATA, that will be deleted to create some +fragmentation. It should be at least 5% and at most 80% of the +test data. + +Example: + TEST_DATA_HOLE=icons + +3.10 TEST_FS_USE_DISK_LABEL +------------------------------ +Which disk label to use for testing file systems. At the moment, only +msdos is supported/tested, although most should work. + +Example: + TEST_FS_USE_DISK_LABEL=msdos + +3.11 QUIET_KERNEL +-------------------- +Set to 1 if you want to shut up the kernel's annoying messages + +Example: + QUIET_KERNEL=1 + +3.12 VERBOSE_LOGS +-------------------- +Set to 1 if you want logging of everything, including successful tests. + +Example: + VERBOSE_LOGS=1 + +3.13 MALLOC_TRACE +-------------------- +Uncomment this if you want to do malloc() debugging with mtrace. +TODO: document this. + + +------------------------------------------------------------------------------ +4 RUNNING THE TESTS +------------------------------------------------------------------------------ + +4.1 Starting the tests +-------------------------- +To run the tests, you must be root. To run all tests, type: + + ./test + +To run a subset of tests, you can type part of the file name of +those tests. For example, to run all partition table tests, type: + + ./test disk + +Or the FAT tests: + + ./test fat + +4.2 Stopping the tests +-------------------------- +If you want to interrupt the tests, the easiest way is: + + (1) hit ctrl-z on the controlling virtual console / terminal + (2) run "ps", with no arguments + (3) run "kill -9 [PID]", where [PID] is the process id of + "test" + +4.3 Examining the logs +-------------------------- +In progress logs are written to test_out. After each test completes, +it's output (from test_out), among other things is appended to test_log + +To check if any tests failed, type: + + grep failed test_log > /dev/null && echo FAILED || echo PASSED + +If some tests failed, check the logs to see what the problem is. You +may have set up the regression tests incorrectly. + +4.4 Sending bug reports +--------------------------- +If you think it's a bug (or you're not sure), email us! + + bug-parted@gnu.org + +Please attach the test_log. Gzip it first ;) + + +------------------------------------------------------------------------------ +5 HOW THE TESTS WORK +------------------------------------------------------------------------------ + +Parted has regression tests for all partition table formats, and for +the ext2, fat and linuxswap. The partition table tests are mainly +"Create problem X and test that parted complains about it". It +doesn't compare output... only if parted reports error, and that it +doesn't segfault. + The file system tests are mainly "do some operation on the +file system, and check it's still got the same data", via diff(1). +Also, it runs dosfsck(1) and e2fsck(1). |