test ...
That way all of the commands in your tests will succeed or fail. If
- you must ignore the return value of something (e.g. the return
- value of export is unportable) it's best to indicate so explicitly
- with a semicolon:
+ you must ignore the return value of something (e.g., the return
+ after unsetting a variable that was already unset is unportable) it's
+ best to indicate so explicitly with a semicolon:
- export HLAGH;
+ unset HLAGH;
git merge hla &&
git push gh &&
test ...
test_expect_success TTY 'git --paginate rev-list uses a pager' \
' ... '
+ You can also supply a comma-separated list of prerequisites, in the
+ rare case where your test depends on more than one:
+
+ test_expect_success PERL,PYTHON 'yo dawg' \
+ ' test $(perl -E 'print eval "1 +" . qx[python -c "print 2"]') == "4" '
+
- test_expect_failure [<prereq>] <message> <script>
This is NOT the opposite of test_expect_success, but is used
- test_set_prereq SOME_PREREQ
Set a test prerequisite to be used later with test_have_prereq. The
- test-lib will set some prerequisites for you, e.g. PERL and PYTHON
- which are derived from ./GIT-BUILD-OPTIONS (grep test_set_prereq
- test-lib.sh for more). Others you can set yourself and use later
- with either test_have_prereq directly, or the three argument
- invocation of test_expect_success and test_expect_failure.
+ test-lib will set some prerequisites for you, see the
+ "Prerequisites" section below for a full list of these.
+
+ Others you can set yourself and use later with either
+ test_have_prereq directly, or the three argument invocation of
+ test_expect_success and test_expect_failure.
- test_have_prereq SOME PREREQ
...
'
+Prerequisites
+-------------
+
+These are the prerequisites that the test library predefines with
+test_have_prereq.
+
+See the prereq argument to the test_* functions in the "Test harness
+library" section above and the "test_have_prereq" function for how to
+use these, and "test_set_prereq" for how to define your own.
+
+ - PERL & PYTHON
+
+ Git wasn't compiled with NO_PERL=YesPlease or
+ NO_PYTHON=YesPlease. Wrap any tests that need Perl or Python in
+ these.
+
+ - POSIXPERM
+
+ The filesystem supports POSIX style permission bits.
+
+ - BSLASHPSPEC
+
+ Backslashes in pathspec are not directory separators. This is not
+ set on Windows. See 6fd1106a for details.
+
+ - EXECKEEPSPID
+
+ The process retains the same pid across exec(2). See fb9a2bea for
+ details.
+
+ - SYMLINKS
+
+ The filesystem we're on supports symbolic links. E.g. a FAT
+ filesystem doesn't support these. See 704a3143 for details.
+
+ - SANITY
+
+ Test is not run by root user, and an attempt to write to an
+ unwritable file is expected to fail correctly.
Tips for Writing Tests
----------------------
validation in one place. Your test also ends up needing
updating when such a change to the internal happens, so do _not_
do it and leave the low level of validation to t0000-basic.sh.
+
+Smoke testing
+-------------
+
+The Git test suite has support for smoke testing. Smoke testing is
+when you submit the results of a test run to a central server for
+analysis and aggregation.
+
+Running a smoke tester is an easy and valuable way of contributing to
+Git development, particularly if you have access to an uncommon OS on
+obscure hardware.
+
+After building Git you can generate a smoke report like this in the
+"t" directory:
+
+ make clean smoke
+
+You can also pass arguments via the environment. This should make it
+faster:
+
+ GIT_TEST_OPTS='--root=/dev/shm' TEST_JOBS=10 make clean smoke
+
+The "smoke" target will run the Git test suite with Perl's
+"TAP::Harness" module, and package up the results in a .tar.gz archive
+with "TAP::Harness::Archive". The former is included with Perl v5.10.1
+or later, but you'll need to install the latter from the CPAN. See the
+"Test coverage" section above for how you might do that.
+
+Once the "smoke" target finishes you'll see a message like this:
+
+ TAP Archive created at <path to git>/t/test-results/git-smoke.tar.gz
+
+To upload the smoke report you need to have curl(1) installed, then
+do:
+
+ make smoke_report
+
+To upload the report anonymously. Hopefully that'll return something
+like "Reported #7 added.".
+
+If you're going to be uploading reports frequently please request a
+user account by E-Mailing gitsmoke@v.nix.is. Once you have a username
+and password you'll be able to do:
+
+ SMOKE_USERNAME=<username> SMOKE_PASSWORD=<password> make smoke_report
+
+You can also add an additional comment to attach to the report, and/or
+a comma separated list of tags:
+
+ SMOKE_USERNAME=<username> SMOKE_PASSWORD=<password> \
+ SMOKE_COMMENT=<comment> SMOKE_TAGS=<tags> \
+ make smoke_report
+
+Once the report is uploaded it'll be made available at
+http://smoke.git.nix.is, here's an overview of Recent Smoke Reports
+for Git:
+
+ http://smoke.git.nix.is/app/projects/smoke_reports/1
+
+The reports will also be mirrored to GitHub every few hours:
+
+ http://github.com/gitsmoke/smoke-reports
+
+The Smolder SQLite database is also mirrored and made available for
+download:
+
+ http://github.com/gitsmoke/smoke-database
+
+Note that the database includes hashed (with crypt()) user passwords
+and E-Mail addresses. Don't use a valuable password for the smoke
+service if you have an account, or an E-Mail address you don't want to
+be publicly known. The user accounts are just meant to be convenient
+labels, they're not meant to be secure.