Running tests with '-x' option to trace the individual command
executions is a useful way to debug test scripts, but some tests
that capture the standard error stream and check what the command
said can be broken with the trace output mixed in. When running
our tests under "bash", however, we can redirect the trace output
to another file descriptor to keep the standard error of programs
being tested intact.
* jk/test-send-sh-x-trace-elsewhere:
test-lib: set BASH_XTRACEFD automatically
Passing "-x" to a test script enables the shell's "set -x"
tracing, which can help with tracking down the command that
is causing a failure. Unfortunately, it can also _cause_
failures in some tests that redirect the stderr of a shell
function. Inside the function the shell continues to
respect "set -x", and the trace output is collected along
with whatever stderr is generated normally by the function.
You can see an example of this by running:
./t0040-parse-options.sh -x -i
which will fail immediately in the first test, as it
expects:
test_must_fail some-cmd 2>output.err
to leave output.err empty (but with "-x" it has our trace
output).
Unfortunately there isn't a portable or scalable solution to
this. We could teach test_must_fail to disable "set -x", but
that doesn't help any of the other functions or subshells.
However, we can work around it by pointing the "set -x"
output to our descriptor 4, which always points to the
original stderr of the test script. Unfortunately this only
works for bash, but it's better than nothing (and other
shells will just ignore the BASH_XTRACEFD variable).
The patch itself is a simple one-liner, but note the caveats
in the accompanying comments.
Automatic tests for our "-x" option may be a bit too meta
(and a pain, because they are bash-specific), but I did
confirm that it works correctly both with regular "-x" and
with "--verbose-only=1". This works because the latter flips
"set -x" off and on for particular tests (if it didn't, we
would get tracing for all tests, as going to descriptor 4
effectively circumvents the verbose flag).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When prefixing a Git call in the test suite with 'debug ', it will
now be run with GDB, allowing the developer to debug test failures
more conveniently.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's easy to miss an "&&"-chain in a test script, like:
test_expect_success 'check something important' '
cmd1 &&
cmd2
cmd3
'
The test harness will notice if cmd3 fails, but a failure of
cmd1 or cmd2 will go unnoticed, as their exit status is lost
after cmd3 runs.
The toy example above is easy to spot because the "cmds" are
all the same length, but real code is much more complicated.
It's also difficult to detect these situations by statically
analyzing the shell code with regexps (like the
check-non-portable-shell script does); there's too much
context required to know whether a &&-chain is appropriate
on a given line or not.
This patch instead lets the shell check each test by
sticking a command with a specific and unusual return code
at the top of each test, like:
(exit 117) &&
cmd1 &&
cmd2
cmd3
In a well-formed test, the non-zero exit from the first
command prevents any of the rest from being run, and the
test's exit code is 117. In a bad test (like the one above),
the 117 is lost, and cmd3 is run.
When we encounter a failure of this check, we abort the test
script entirely. For one thing, we have no clue which subset
of the commands in the test snippet were actually run.
Running further tests would be pointless, because we're now
in an unknown state. And two, this is not a "test failure"
in the traditional sense. The test script is buggy, not the
code it is testing. We should be able to fix these problems
in the script once, and not have them come back later as a
regression in git's code.
After checking a test snippet for --chain-lint, we do still
run the test itself. We could actually have a pure-lint
mode which just checks each test, but there are a few
reasons not to. One, because the tests are executing
arbitrary code, which could impact the later environment
(e.g., that could impact which set of tests we run at all).
And two, because a pure-lint mode would still be expensive
to run, because a significant amount of code runs outside of
the test_expect_* blocks. Instead, this option is designed
to be used as part of a normal test suite run, where it adds
very little overhead.
Turning on this option detects quite a few problems in
existing tests, which will be fixed in subsequent patches.
However, there are a number of places it cannot reach:
- it cannot find a failure to break out of loops on error,
like:
cmd1 &&
for i in a b c; do
cmd2 $i
done &&
cmd3
which will not notice failures of "cmd2 a" or "cmd b"
- it cannot find a missing &&-chain inside a block or
subfunction, like:
foo () {
cmd1
cmd2
}
foo &&
bar
which will not notice a failure of cmd1.
- it only checks tests that you run; every platform will
have some tests skipped due to missing prequisites,
so it's impossible to say from one run that the test
suite is free of broken &&-chains. However, all tests get
run by _somebody_, so eventually we will notice problems.
- it does not operate on test_when_finished or prerequisite
blocks. It could, but these tends to be much shorter and
less of a problem, so I punted on them in this patch.
This patch was inspired by an earlier patch by Jonathan
Nieder:
http://article.gmane.org/gmane.comp.version-control.git/235913
This implementation and all bugs are mine.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We require use of test_must_fail to check expected non-zero exit by
Git itself, but discourage test_must_fail to be used for checking
exit status of non Git commands that are supplied by the system.
The current text explains the reason for the former but not the
latter.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Usually running a test under "-v" makes it clear which
command is failing. However, sometimes it can be useful to
also see a complete trace of the shell commands being run in
the test. You can do so without any support from the test
suite by running "sh -x tXXXX-foo.sh". However, this
produces quite a large bit of output, as we see a trace of
the entire test suite.
This patch instead introduces a "-x" option to the test
scripts (i.e., "./tXXXX-foo.sh -x"). When enabled, this
turns on "set -x" only for the tests themselves. This can
still be a bit verbose, but should keep things to a more
manageable level. You can even use "--verbose-only" to see
the trace only for a specific test.
The implementation is a little invasive. We turn on the "set
-x" inside the "eval" of the test code. This lets the eval
itself avoid being reported in the trace (which would be
long, and redundant with the verbose listing we already
showed). And then after the eval runs, we do some trickery
with stderr to avoid showing the "set +x" to the user.
We also show traces for test_cleanup functions (since they
can impact the test outcome, too). However, we do avoid
running the noop ":" cleanup (the default if the test does
not use test_cleanup at all), as it creates unnecessary
noise in the "set -x" output.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow specifying only certain individual test pieces to be run
using a range notation (e.g. "t1234-test.sh --run='1-4 6 8 9-'").
* ib/test-selectively-run:
t0000-*.sh: fix the GIT_SKIP_TESTS sub-tests
test-lib: '--run' to run only specific tests
test-lib: tests skipped by GIT_SKIP_TESTS say so
test-lib: document short options in t/README
test_write_lines carefully quotes its arguments as "$@", so
test_write_lines "a b" c
writes two lines as requested, not three.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow better control of the set of tests that will be executed for a
single test suite. Mostly useful while debugging or developing as it
allows to focus on a specific test.
Signed-off-by: Ilya Bobyr <ilya.bobyr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Most arguments that could be provided to a test have short forms.
Unless documented, the only way to learn them is to read the code.
Signed-off-by: Ilya Bobyr <ilya.bobyr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Once upon a time, we assumed that calling a bare "perl" in
the test scripts was OK, because we would find the perl from
the user's PATH, and we were only asking that perl to do
basic operations that work even on old versions of perl.
Later, we found that some systems really prefer to use
$PERL_PATH even for these basic cases, because the system
perl misbehaves in some way (e.g., by handling line endings
differently). We then switched "perl" invocations to
"$PERL_PATH" to respect the user's choice.
Having to use "$PERL_PATH" is ugly and cumbersome, though.
Instead, let's provide a perl() shell function that tests
can use, which will transparently do the right thing.
Unfortunately, test writers still have to use $PERL_PATH in
certain situations, so we still need to keep the advice in
the README.
Note that this may fix test failures in t5004, t5503, t6002,
t6003, t6300, t8001, and t8002, depending on your system's
perl setup. All of these can be detected by running:
ln -s /bin/false bin-wrappers/perl
make test
which fails before this patch, and passes after.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The git build system supports a NO_PERL switch to avoid installing
perl bindings or other features (like "git add --patch") that rely on
perl on runtime, but even with NO_PERL it has not been possible for a
long time to run tests without perl. Helpers such as
nul_to_q () {
"$PERL_PATH" -pe 'y/\000/Q/'
}
use perl as a better tr or sed and are regularly used in tests without
worrying to add a PERL prerequisite.
Perl is portable enough that it seems fine to keep relying on it for
this kind of thing in tests (and more readable than the alternative of
trying to find POSIXy equivalents). Update the test documentation to
clarify this.
Reported-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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
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>
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>
Many tests that check the behaviour of symbolic links stored in the
index or the tree objects do not have to be skipped on a filesystem
that lack symbolic link support.
* js/test-ln-s-add:
t4011: remove SYMLINKS prerequisite
t6035: use test_ln_s_add to remove SYMLINKS prerequisite
t3509, t4023, t4114: use test_ln_s_add to remove SYMLINKS prerequisite
t3100: use test_ln_s_add to remove SYMLINKS prerequisite
t3030: use test_ln_s_add to remove SYMLINKS prerequisite
t0000: use test_ln_s_add to remove SYMLINKS prerequisite
tests: use test_ln_s_add to remove SYMLINKS prerequisite (trivial cases)
tests: introduce test_ln_s_add
t3010: modernize style
test-chmtime: Fix exit code on Windows
Add a new function that creates a symbolic link and adds it to the index
to be used in cases where a symbolic link is not required on the file
system. We will use it to remove many SYMLINKS prerequisites from test
cases.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a test wants to make sure there is no <string> in an output
file, we should just say "! grep string output".
"test_must_fail" is there only to test Git command and catch unusual
deaths we know about (e.g. segv) as an error, not as an expected
failure. "test_must_fail grep string output" is unnecessary, as
we are not making sure the system binaries do not dump core or
anything like that.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 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
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>
With --valgrind=memcheck-fast, the tests run under memcheck but
without the autodetected --track-origins. If you just run valgrind to
see *if* there is any memory issue with your program, the extra
information is not needed, and it comes at a roughly 30% hit in
runtime.
While it is possible to achieve the same through GIT_VALGRIND_OPTIONS,
this should be more discoverable and hopefully encourage more users to
run their tests with valgrind.
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>
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>
This was missed in 3da9365 (Tests: let --valgrind imply --verbose and
--tee, 2009-02-04).
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>
UTF8 behaviour of the filesystem (conversion from nfd to nfc) plays a
role in several tests and is tested in several tests. Therefore, move
the test from t0050 into the test lib and use the prerequisite in t0050.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Case insensitivity plays a role in several tests and is tested in several
tests. Therefore, move the test from t003 into the test lib and use the
prerequisite in t0003.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a few more advices that we often have to give to new test
writers.
Also update an example where a double quote pair is used to enclose
a test body to use a single quote pair, which is more readable and
more importantly gives saner semantics for variable substitution.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I'm no longer running the Git smoke testing service at
smoke.git.nix.is due to Smolder being a fragile piece of software not
having time to follow through on making it easy for third parties to
run and submit their own smoke tests.
So remove the support in Git for sending smoke tests to
smoke.git.nix.is, it's still easy to modify the test suite to submit
smokes somewhere else.
This reverts the following commits:
Revert "t/README: Add SMOKE_{COMMENT,TAGS}= to smoke_report target" -- e38efac87d
Revert "t/README: Document the Smoke testing" -- d15e9ebc5c
Revert "t/Makefile: Create test-results dir for smoke target" -- 617344d77b
Revert "tests: Infrastructure for Git smoke testing" -- b6b84d1b74
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 781f76b15 (test-lib: redirect stdin of tests) you can't simply put a
"bash &&" into a test for debugging purposes anymore. Instead you'll have
to use "bash <&6 >&3 2>&4".
As that invocation is not that easy to remember add the test_pause
convenience function. It invokes "$SHELL_PATH" to provide a sane shell
for the user.
This function also checks if the -v flag is given and will error out if
that is not the case instead of letting the test hang until ^D is pressed.
Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* mk/grep-pcre:
git-grep: Fix problems with recently added tests
git-grep: Update tests (mainly for -P)
Makefile: Pass USE_LIBPCRE down in GIT-BUILD-OPTIONS
git-grep: update tests now regexp type is "last one wins"
git-grep: do not die upon -F/-P when grep.extendedRegexp is set.
git-grep: Bail out when -P is used with -F or -E
grep: Add basic tests
configure: Check for libpcre
git-grep: Learn PCRE
grep: Extract compile_regexp_failed() from compile_regexp()
grep: Fix a typo in a comment
grep: Put calls to fixmatch() and regmatch() into patmatch()
contrib/completion: --line-number to git grep
Documentation: Add --line-number to git-grep synopsis
This modest patch adds simple tests for git grep -P/--perl-regexp and
its interoperation with -i and -w.
Tests are only enabled when prerequisite LIBPCRE is defined (it's
automatically set based on USE_LIBPCRE in test-lib.sh).
Signed-off-by: Michał Kiedrowicz <michal.kiedrowicz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Document all test function arguments in the same way.
While at it, tweak the description of test_path_is_* (thanks to Junio),
and correct some grammatical errors.
Signed-off-by: Mathias Lafeldt <misfire@debugon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
contrib/thunderbird-patch-inline: do not require bash to run the script
t8001: check the exit status of the command being tested
strbuf.h: remove a tad stale docs-in-comment and reference api-doc instead
Typos: t/README
Documentation/config.txt: make truth value of numbers more explicit
git-pack-objects.txt: fix grammatical errors
parse-remote: replace unnecessary sed invocation
* maint:
Update draft release notes to 1.7.4.2
Work around broken ln on solaris as used in t8006
t/README: Add a note about running commands under valgrind
The test suite runs valgrind with certain options activated. Add a
note saying how to run commands under the same conditions as the test
suite does.
Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This adds just a "do it this way" instruction without a lot of explanation,
because the details are too complex to be explained at this point.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some tests check their output with code like the following:
test "$(git ls-files -u B | wc -l)" -eq 3 || {
echo "BAD: should have left stages for B"
return 1
}
The verbose failure condition is used because test, unlike
diff, does not print any useful information about the
nature of the failure when it fails.
Introduce a test_line_count function to help. If used like
git ls-files -u B >output &&
test_line_count -eq 3 output
it will produce output like
test_line_count: line count for output !-eq 3
100644 b023018cabc396e7692c70bbf5784a93d3f738ab 2 hi.c
100644 45b983be36b73c0788dc9cbcb76cbb80fc7bb057 3 hi.c
on failure.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
You can run "make DEFAULT_TEST_TARGET=prove test" to run the test under
"prove" (or $(PROVE) if set). The output is a bit easier to read when
running many tests in parallel.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Liked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Liked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change test_expect_code to be a normal test command instead of a
top-level command.
As a top-level command it would fail in cases like:
test_expect_code 1 'phoney' '
foo && bar && (exit 1)
'
Here the test might incorrectly succeed if "foo" or "bar" happened to
fail with exit status 1. Instead we now do:
test_expect_success 'phoney' '
foo && bar && test_expect_code 1 "(exit 1)"
'
Which will only succeed if "foo" and "bar" return status 0, and "(exit
1)" returns status 1. Note that test_expect_code has been made slightly
noisier, as it reports the exit code it receives even upon success.
Some test code in t0000-basic.sh relied on the old semantics of
test_expect_code to test the test_when_finished command. I've
converted that code to use an external test similar to the TODO test I
added in v1.7.3-rc0~2^2~3.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ab/test-2: (51 commits)
tests: factor HOME=$(pwd) in test-lib.sh
test-lib: use subshell instead of cd $new && .. && cd $old
tests: simplify "missing PREREQ" message
t/t0000-basic.sh: Run the passing TODO test inside its own test-lib
test-lib: Allow overriding of TEST_DIRECTORY
test-lib: Use "$GIT_BUILD_DIR" instead of "$TEST_DIRECTORY"/../
test-lib: Use $TEST_DIRECTORY or $GIT_BUILD_DIR instead of $(pwd) and ../
test: Introduce $GIT_BUILD_DIR
cvs tests: do not touch test CVS repositories shipped with source
t/t9602-cvsimport-branches-tags.sh: Add a PERL prerequisite
t/t9601-cvsimport-vendor-branch.sh: Add a PERL prerequisite
t/t7105-reset-patch.sh: Add a PERL prerequisite
t/t9001-send-email.sh: convert setup code to tests
t/t9001-send-email.sh: change from skip_all=* to prereq skip
t/t9001-send-email.sh: Remove needless PROG=* assignment
t/t9600-cvsimport.sh: change from skip_all=* to prereq skip
lib-patch-mode tests: change from skip_all=* to prereq skip
t/t3701-add-interactive.sh: change from skip_all=* to prereq skip
tests: Move FILEMODE prerequisite to lib-prereq-FILEMODE.sh
t/Makefile: Create test-results dir for smoke target
...
Conflicts:
t/t6035-merge-dir-to-symlink.sh
The example I initially added to "Skipping tests" wasn't very
good. We'd rather skip tests using the three-arg prereq form to the
test_* functions, not bail out with a skip message.
Change the documentation to reflect that, but retain the bailout
example under a disclaimer which explains that it's probably not a
good idea to use it.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
