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2013-07-12Merge branch 'ml/cygwin-does-not-have-fifo'Libravatar Junio C Hamano1-1/+8
* ml/cygwin-does-not-have-fifo: test-lib.sh - cygwin does not have usable FIFOs
2013-07-05Merge branch 'tr/test-v-and-v-subtest-only'Libravatar Junio C Hamano1-49/+197
Allows N instances of tests run in parallel, each running 1/N parts of the test suite under Valgrind, to speed things up. * tr/test-v-and-v-subtest-only: perf-lib: fix start/stop of perf tests test-lib: support running tests under valgrind in parallel test-lib: allow prefixing a custom string before "ok N" etc. test-lib: valgrind for only tests matching a pattern test-lib: verbose mode for only tests matching a pattern test-lib: self-test that --verbose works test-lib: rearrange start/end of test_expect_* and test_skip test-lib: refactor $GIT_SKIP_TESTS matching test-lib: enable MALLOC_* for the actual tests
2013-07-05test-lib.sh - cygwin does not have usable FIFOsLibravatar Mark Levedahl1-1/+8
Do not use FIFOs on cygwin, they do not work. Cygwin includes coreutils, so has mkfifo, and that command does something. However, the resultant named pipe is known (on the Cygwin mailing list at least) to not work correctly. This disables PIPE for Cygwin, allowing t0008.sh to complete (all other tests in that file work correctly). Signed-off-by: Mark Levedahl <mlevedahl@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-23test-lib: support running tests under valgrind in parallelLibravatar Thomas Rast1-22/+84
With the new --valgrind-parallel=<n> option, we support running the tests in a single test script under valgrind in parallel using 'n' processes. This really follows the dumbest approach possible, as follows: * We spawn the test script 'n' times, using a throw-away TEST_OUTPUT_DIRECTORY. Each of the instances is given options that ensures that it only runs every n-th test under valgrind, but together they cover the entire range. * We add up the numbers from the individual tests, and provide the usual output. This is really a gross hack at this point, and should be improved. In particular we should keep the actual outputs somewhere more easily discoverable, and summarize them to the user. Nevertheless, this is already workable and gives a speedup of more than 2 on a dual-core (hyperthreaded) machine, using n=4. This is expected since the overhead of valgrind is so big (on the order of 20x under good conditions, and a large startup overhead at every git invocation) that redundantly running the non-valgrind tests in between is not that expensive. Helped-by: Jeff King <peff@peff.net> Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-23test-lib: allow prefixing a custom string before "ok N" etc.Libravatar Thomas Rast1-12/+15
This is not really meant for external use, and thus not documented. It allows the next commit to neatly distinguish between sub-tests and the main run. The format is intentionally not valid TAP. The use in the next commit would not result in anything valid either way, and it seems better to make it obvious. Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-23test-lib: valgrind for only tests matching a patternLibravatar Thomas Rast1-1/+35
With the new --valgrind-only=<pattern> option, one can enable --valgrind at a per-test granularity, exactly analogous to --verbose-only from the previous commit. The options are wired such that --valgrind implies --verbose (as before), but --valgrind-only=<pattern> implies --verbose-only=<pattern> unless --verbose is also in effect. Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-23test-lib: verbose mode for only tests matching a patternLibravatar Thomas Rast1-0/+31
With the new --verbose-only=<pattern> option, one can enable --verbose at a per-test granularity. The pattern is matched against the test number, e.g. ./t0000-basic.sh --verbose-only='2[0-2]' to see only the full output of test 20-22, while showing the rest in the one-liner format. As suggested by Jeff King, this takes care to wrap the entire test_expect_* block, but nothing else, in the verbose toggling. We can use the test_start/end functions from the previous commit for the purpose. This is arguably not *too* useful on its own, but makes the next patch easier to follow. Helped-by: Jeff King <peff@peff.net> Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-23test-lib: self-test that --verbose worksLibravatar Thomas Rast1-0/+2
t0000 contains some light self-tests of test-lib.sh, but --verbose was not covered. Add a test. The only catch is that the presence of a test harness influences the output (specifically, the presence of some empty lines). So we need to unset TEST_HARNESS or set it to a known value. Leaving it unset leads to spurious test failures in the final summary, which come from the subtest. So we always set it. Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-18test-lib: rearrange start/end of test_expect_* and test_skipLibravatar Thomas Rast1-1/+8
This moves * the early setup part from test_skip to a new function test_start_ * the final common parts of test_expect_* to a new function test_finish_ to make the next commit more obvious. Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-18test-lib: refactor $GIT_SKIP_TESTS matchingLibravatar Thomas Rast1-17/+24
It's already used twice, and we will have more of the same kind of matching in a minute. Helped-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-17test-lib: enable MALLOC_* for the actual testsLibravatar Thomas Rast1-0/+2
1b3185f (MALLOC_CHECK: various clean-ups, 2012-09-14) moved around the MALLOC_CHECK_ and MALLOC_PERTURB_ assignments, intending to limit their effect to only the test runs. However, they were actually enabled only during test cleanup. Call setup/teardown_malloc_check also around the evaluation of the actual test snippet. Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-29Merge branch 'jk/test-output'Libravatar Junio C Hamano1-2/+2
When TEST_OUTPUT_DIRECTORY setting is used, it was handled somewhat inconsistently between the test framework and t/Makefile, and logic to summarize the results looked at a wrong place. * jk/test-output: t/Makefile: don't define TEST_RESULTS_DIRECTORY recursively test output: respect $TEST_OUTPUT_DIRECTORY t/Makefile: fix result handling with TEST_OUTPUT_DIRECTORY
2013-04-29test output: respect $TEST_OUTPUT_DIRECTORYLibravatar John Keeping1-2/+2
Most test results go in $TEST_OUTPUT_DIRECTORY, but the output files for tests run with --tee or --valgrind just use bare "test-results". Changes these so that they do respect $TEST_OUTPUT_DIRECTORY. As a result of this, the valgrind/analyze.sh script may no longer inspect the correct files so it is also updated to respect $TEST_OUTPUT_DIRECTORY by adding it to GIT-BUILD-OPTIONS. This may be a regression for people who have TEST_OUTPUT_DIRECTORY in their config.mak but want to override it in the environment, but this change merely brings it into line with GIT_TEST_OPTS which already cannot be overridden if it is specified in config.mak. Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-18Merge branch 'jk/test-trash'Libravatar Junio C Hamano1-9/+9
Fix longstanding issues with the test harness when used with --root=<there> option. * jk/test-trash: t/test-lib.sh: drop "$test" variable t/test-lib.sh: fix TRASH_DIRECTORY handling
2013-04-14t/test-lib.sh: drop "$test" variableLibravatar Jeff King1-5/+5
The $test variable is used as an interim buffer for constructing $TRASH_DIRECTORY, and is almost compatible with it (the exception being that $test has not been converted to an absolute path). Let's get rid of it entirely so that later code does not accidentally use it, thinking the two are interchangeable. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-14t/test-lib.sh: fix TRASH_DIRECTORY handlingLibravatar John Keeping1-4/+4
After the location of $TRASH_DIRECTORY is adjusted by $TEST_OUTPUT_DIRECTORY, we go on to use the $test variable to make the trash directory and cd into it. This means that when $TEST_OUTPUT_DIRECTORY is not "." and an absolute --root has not been specified, we do not remove the trash directory once the tests are complete (remove_trash is set to $TRASH_DIRECTORY). Fix this by always referring to the trash directory as $TRASH_DIRECTORY. Signed-off-by: John Keeping <john@keeping.me.uk> Acked-by: Jeff King <peff@peff.net> Acked-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-11Merge branch 'maint'Libravatar Junio C Hamano1-0/+5
* maint: Typo fix: replacing it's -> its t: make PIPE a standard test prerequisite archive: clarify explanation of --worktree-attributes t/README: --immediate skips cleanup commands for failed tests
2013-04-11t: make PIPE a standard test prerequisiteLibravatar Adam Spiers1-0/+5
The 'PIPE' test prerequisite was already defined identically by t9010 and t9300, therefore it makes sense to make it a predefined prerequisite. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-03Merge branch 'jk/empty-archive' into maintLibravatar Junio C Hamano1-0/+6
"git archive" reports a failure when asked to create an archive out of an empty tree. It would be more intuitive to give an empty archive back in such a case. * jk/empty-archive: archive: handle commits with an empty tree test-lib: factor out $GIT_UNZIP setup
2013-04-01tests: parameterize --valgrind optionLibravatar Thomas Rast1-1/+9
Running tests under helgrind and DRD recently proved useful in tracking down thread interaction issues. This can unfortunately not be done through GIT_VALGRIND_OPTIONS because any tool other than memcheck would complain about unknown options. Let --valgrind take an optional parameter that describes the valgrind tool to invoke. The default mode is to run memcheck as before. Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-03-25Merge branch 'jk/empty-archive'Libravatar Junio C Hamano1-0/+6
"git archive" reports a failure when asked to create an archive out of an empty tree. It would be more intuitive to give an empty archive back in such a case. * jk/empty-archive: archive: handle commits with an empty tree test-lib: factor out $GIT_UNZIP setup
2013-03-10test-lib: factor out $GIT_UNZIP setupLibravatar Jeff King1-0/+6
We set up the $GIT_UNZIP variable and lazy prereq in multiple places (and the next patch is about to add another one). Let's factor it out to avoid repeating ourselves. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-02-07Merge branch 'nd/fix-perf-parameters-in-tests' into maintLibravatar Junio C Hamano1-1/+1
* nd/fix-perf-parameters-in-tests: test-lib.sh: unfilter GIT_PERF_*
2013-01-26git p4 test: translate windows paths for cygwinLibravatar Pete Wyckoff1-0/+3
Native windows binaries do not understand posix-like path mapping offered by cygwin. Convert paths to native using "cygpath --windows" before presenting them to p4d. This is done using the AltRoots mechanism of p4. Both the posix and windows forms are put in the client specification, allowing p4 to find its location by native path even though the environment reports a different PWD. Shell operations in tests will use the normal form of $cli, which will look like a posix path in cygwin, while p4 will use AltRoots to match against the windows form of the working directory. This mechanism also handles the symlink issue that was fixed in 23bd0c9 (git p4 test: use real_path to resolve p4 client symlinks, 2012-06-27). Now that every p4 client view has an AltRoots with the real_path in it, explicitly calculating the real_path elsewhere is not necessary. Thanks-to: Sebastian Schuberth <sschuberth@gmail.com> Thanks-to: Johannes Sixt <j6t@kdbg.org> fixup! git p4 test: translate windows paths for cygwin Signed-off-by: Pete Wyckoff <pw@padd.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-20Merge branch 'rs/zip-tests' into maintLibravatar Junio C Hamano1-0/+2
* rs/zip-tests: t5003: check if unzip supports symlinks t5000, t5003: move ZIP tests into their own script t0024, t5000: use test_lazy_prereq for UNZIP t0024, t5000: clear variable UNZIP, use GIT_UNZIP instead
2013-01-18Merge branch 'nd/fix-perf-parameters-in-tests'Libravatar Junio C Hamano1-1/+1
Allow GIT_PERF_* environment variables to be passed through the test framework. * nd/fix-perf-parameters-in-tests: test-lib.sh: unfilter GIT_PERF_*
2013-01-15test-lib.sh: unfilter GIT_PERF_*Libravatar Nguyễn Thái Ngọc Duy1-1/+1
These variables are user parameters to control how to run the perf tests. Allow users to do so. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-11Merge branch 'rs/zip-tests'Libravatar Junio C Hamano1-0/+2
Update zip tests to skip some that cannot be handled on platform unzip. * rs/zip-tests: t5003: check if unzip supports symlinks t5000, t5003: move ZIP tests into their own script t0024, t5000: use test_lazy_prereq for UNZIP t0024, t5000: clear variable UNZIP, use GIT_UNZIP instead
2013-01-06t0024, t5000: clear variable UNZIP, use GIT_UNZIP insteadLibravatar René Scharfe1-0/+2
InfoZIP's unzip takes default parameters from the environment variable UNZIP. Unset it in the test library and use GIT_UNZIP for specifying alternate versions of the unzip command instead. t0024 wasn't even using variable for the actual extraction. t5000 was, but when setting it to InfoZIP's unzip it would try to extract from itself (because it treats the contents of $UNZIP as parameters), which failed of course. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-03Merge branch 'as/test-tweaks'Libravatar Junio C Hamano1-11/+18
Output from the tests is coloured using "green is okay, yellow is questionable, red is bad and blue is informative" scheme. * as/test-tweaks: tests: paint unexpectedly fixed known breakages in bold red tests: test the test framework more thoroughly tests: refactor mechanics of testing in a sub test-lib tests: change info messages from yellow/brown to cyan tests: paint skipped tests in blue tests: paint known breakages in yellow tests: test number comes first in 'not ok $count - $message'
2012-12-20tests: paint unexpectedly fixed known breakages in bold redLibravatar Adam Spiers1-4/+9
Change color of unexpectedly fixed known breakages to bold red. An unexpectedly passing test indicates that the test code is somehow broken or out of sync with the code it is testing. Either way this is an error which is potentially as bad as a failing test, and as such is no longer portrayed as a pass in the output. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20tests: change info messages from yellow/brown to cyanLibravatar Adam Spiers1-3/+3
Now that we've adopted a "traffic lights" coloring scheme, yellow is used for warning messages, so we need to re-color info messages to something less alarmist. Blue is a universal color for informational messages; however we are using that for skipped tests in order to align with the color schemes of other test suites. Therefore we use cyan which is also blue-ish, but visually distinct from blue. This was suggested on the list a while ago and no-one raised any objections: http://thread.gmane.org/gmane.comp.version-control.git/205675/focus=205966 An earlier iteration of this patch used bold cyan, but the point of this change is to make them less alarming; let's drop the boldness. Also paint the message to report skipping the whole thing via GIT_SKIP_TESTS mechanism in the same color as the "info" color that is used on the final summary line for the entire script. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20tests: paint skipped tests in blueLibravatar Adam Spiers1-1/+1
Skipped tests indicate incomplete test coverage. Whilst this is not a test failure or other error, it's still not a complete success. Other testsuite related software like automake, autotest and prove seem to use blue for skipped tests, so let's follow suit. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20tests: paint known breakages in yellowLibravatar Adam Spiers1-2/+4
Yellow seems a more appropriate color than bold green when considering the universal traffic lights coloring scheme, where green conveys the impression that everything's OK, and amber that something's not quite right. Likewise, change the color of the summarized total number of known breakages from bold red to the same yellow to be less alarmist and more consistent with the above. An earlier version of this patch used bold yellow but because these are all long-known failures, reminding them to developers in bold over and over does not help encouraging them to take a look at them very much. This iteration paints them in plain yellow instead to make them less distracting. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-16tests: test number comes first in 'not ok $count - $message'Libravatar Adam Spiers1-1/+1
The old output to say "not ok - 1 messsage" was working by accident only because the test numbers are optional in TAP. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-29Merge branch 'fc/remote-hg'Libravatar Junio C Hamano1-1/+2
New remote helper for hg. * fc/remote-hg: (22 commits) remote-hg: fix for older versions of python remote-hg: fix for files with spaces remote-hg: avoid bad refs remote-hg: try the 'tip' if no checkout present remote-hg: fix compatibility with older versions of hg remote-hg: add missing config for basic tests remote-hg: the author email can be null remote-hg: add option to not track branches remote-hg: add extra author test remote-hg: add tests to compare with hg-git remote-hg: add bidirectional tests test-lib: avoid full path to store test results remote-hg: add basic tests remote-hg: fake bookmark when there's none remote-hg: add compat for hg-git author fixes remote-hg: add support for hg-git compat mode remote-hg: match hg merge behavior remote-hg: make sure the encoding is correct remote-hg: add support to push URLs remote-hg: add support for remote pushing ...
2012-11-18Merge branch 'jc/test-say-color-avoid-echo-escape' into maintLibravatar Junio C Hamano1-1/+1
The "say" function in the test scaffolding incorrectly allowed "echo" to interpret "\a" as if it were a C-string asking for a BEL output. * jc/test-say-color-avoid-echo-escape: test-lib: Fix say_color () not to interpret \a\b\c in the message
2012-11-15t7502: factor out autoident prerequisiteLibravatar Jeff King1-0/+6
t7502 checks the behavior of commit when we can and cannot determine a valid committer ident. Let's move that into test-lib as a lazy prerequisite so other scripts can use it. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-04test-lib: avoid full path to store test resultsLibravatar Felipe Contreras1-1/+2
No reason to use the full path in case this is used externally. Otherwise we might get errors such as: ./test-lib.sh: line 394: /home/bob/dev/git/t/test-results//home/bob/dev/git/contrib/remote-hg/test-2894.counts: No such file or directory Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Jeff King <peff@peff.net>
2012-10-25Merge branch 'jc/test-say-color-avoid-echo-escape'Libravatar Jeff King1-1/+1
Recent nd/wildmatch series was the first to reveal this ancient bug in the test scaffolding. * jc/test-say-color-avoid-echo-escape: test-lib: Fix say_color () not to interpret \a\b\c in the message
2012-10-11test-lib: Fix say_color () not to interpret \a\b\c in the messageLibravatar Junio C Hamano1-1/+1
When running with color disabled (e.g. under prove to produce TAP output), say_color() helper function is defined to use echo to show the message. With a message that ends with "\c", echo is allowed to interpret it as "Do not end the line with LF". Use printf "%s\n" to emit the message literally. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-01Merge branch 'ep/malloc-check-perturb'Libravatar Junio C Hamano1-1/+1
Fixes a brown-paper bag bug. * ep/malloc-check-perturb: MALLOC_CHECK: enable it, unless disabled explicitly
2012-09-29Merge branch 'rr/test-use-shell-path-not-shell'Libravatar Junio C Hamano1-16/+16
Fixes a brown-paper bag bug. * rr/test-use-shell-path-not-shell: test-lib: use $SHELL_PATH, not $SHELL
2012-09-26MALLOC_CHECK: enable it, unless disabled explicitlyLibravatar René Scharfe1-1/+1
The malloc checks in tests are currently disabled. Actually evaluate the variable for turning them off and enable them if it's unset. Also use this opportunity to give it the more descriptive and consistent name TEST_NO_MALLOC_CHECK. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-25Merge branch 'rr/test-make-sure-we-have-git'Libravatar Junio C Hamano1-0/+9
Only the first test t0000 in the test suite made sure we have built Git to be tested; move the check to test-lib so that it applies to all tests equally. * rr/test-make-sure-we-have-git: t/test-lib: make sure Git has already been built
2012-09-25test-lib: use $SHELL_PATH, not $SHELLLibravatar Ramkumar Ramachandra1-16/+16
The codepath for handling "--tee" ends up relaunching the test script under a shell, and that one has to be a Bourne. But we incorrectly used $SHELL, which could be a non-Bourne (e.g. zsh or csh); we have the Makefile variable $SHELL_PATH for exactly that, so use it instead. Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-18t/test-lib: make sure Git has already been builtLibravatar Ramkumar Ramachandra1-0/+9
When tests were run without building git, they stopped with: .: 54: Can't open /path/to/git/source/t/../GIT-BUILD-OPTIONS Move the check that makes sure that git has already been built from t0000 to test-lib, so that any test will do so before it runs. Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-17MALLOC_CHECK: various clean-upsLibravatar Junio C Hamano1-6/+20
The most important in this change is to avoid affecting anything when test-lib is used from perf-lib. It also limits the effect of the MALLOC_CHECK only to what is run inside the actual test, and uses a fixed MALLOC_PERTURB_ in order to avoid hurting repeatability of the tests. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-14Add MALLOC_CHECK_ and MALLOC_PERTURB_ libc env to the test suite for ↵Libravatar Elia Pinto1-0/+9
detecting heap corruption Recent versions of Linux libc (later than 5.4.23) and glibc (2.x) include a malloc() implementation which is tunable via environment variables. When MALLOC_CHECK_ is set, a special (less efficient) implementation is used which is designed to be tolerant against simple errors, such as double calls of free() with the same argument, or overruns of a single byte (off-by-one bugs). When MALLOC_CHECK_ is set to 3, a diagnostic message is printed on stderr and the program is aborted. Setting the MALLOC_PERTURB_ environment variable causes the malloc functions in libc to return memory which has been wiped and clear memory when it is returned. Of course this does not affect calloc which always does clear the memory. The reason for this exercise is, of course, to find code which uses memory returned by malloc without initializing it and code which uses code after it is freed. valgrind can do this but it's costly to run. The MALLOC_PERTURB_ exchanges the ability to detect problems in 100% of the cases with speed. The byte value used to initialize values returned by malloc is the byte value of the environment value. The value used to clear memory is the bitwise inverse. Setting MALLOC_PERTURB_ to zero disables the feature. This technique can find hard to detect bugs. It is therefore suggested to always use this flag (at least temporarily) when testing out code or a new distribution. But the test suite can use also valgrind(memcheck) via 'make valgrind' or 'make GIT_TEST_OPTS="--valgrind"'. Memcheck wraps client calls to malloc(), and puts a "red zone" on each end of each block in order to detect access overruns. Memcheck already detects double free() (up to the limit of the buffer which remembers pending free()). Thus memcheck subsumes all the documented coverage of MALLOC_CHECK_. If MALLOC_CHECK_ is set non-zero when running memcheck, then the overruns that might be detected by MALLOC_CHECK_ would be overruns on the wrapped blocks which include the red zones. Thus MALLOC_CHECK_ would be checking memcheck, and not the client. This is not useful, and actually is wasteful. The only possible [documented] advantage of using MALLOC_CHECK_ and memcheck together, would be if MALLOC_CHECK_ detected duplicate free() in more cases than memcheck because memcheck's buffer is too small. Therefore we don't use MALLOC_CHECK_ and valgrind(memcheck) at the same time. Signed-off-by: Elia Pinto <gitter.spiros@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-14Merge branch 'rj/tap-fix'Libravatar Junio C Hamano1-23/+46
* rj/tap-fix: test-lib.sh: Suppress the "passed all ..." message if no tests run test-lib.sh: Add check for invalid use of 'skip_all' facility test-lib.sh: Fix some shell coding style violations t4016-*.sh: Skip all tests rather than each test t3902-*.sh: Skip all tests rather than each test t3300-*.sh: Fix a TAP parse error