diff options
Diffstat (limited to 't/README')
| -rw-r--r-- | t/README | 82 |
1 files changed, 72 insertions, 10 deletions
@@ -86,23 +86,35 @@ appropriately before running "make". --immediate:: This causes the test to immediately exit upon the first - failed test. + failed test. Cleanup commands requested with + test_when_finished are not executed if the test failed, + in order to keep the state for inspection by the tester + to diagnose the bug. --long-tests:: This causes additional long-running tests to be run (where available), for more exhaustive testing. ---valgrind:: - Execute all Git binaries with valgrind and exit with status - 126 on errors (just like regular tests, this will only stop - the test script when running under -i). Valgrind errors - go to stderr, so you might want to pass the -v option, too. +--valgrind=<tool>:: + Execute all Git binaries under valgrind tool <tool> and exit + with status 126 on errors (just like regular tests, this will + only stop the test script when running under -i). Since it makes no sense to run the tests with --valgrind and not see any output, this option implies --verbose. For convenience, it also implies --tee. - Note that valgrind is run with the option --leak-check=no, + <tool> defaults to 'memcheck', just like valgrind itself. + Other particularly useful choices include 'helgrind' and + 'drd', but you may use any tool recognized by your valgrind + installation. + + As a special case, <tool> can be 'memcheck-fast', which uses + memcheck but disables --track-origins. Use this if you are + running tests in bulk, to see if there are _any_ memory + issues. + + Note that memcheck is run with the option --leak-check=no, as the git process is short-lived and some errors are not interesting. In order to run a single command under the same conditions manually, you should set GIT_VALGRIND to point to @@ -307,6 +319,28 @@ Don't: Use test_done instead if you need to stop the tests early (see "Skipping tests" below). + - use '! git cmd' when you want to make sure the git command exits + with failure in a controlled way by calling "die()". Instead, + use 'test_must_fail git cmd'. This will signal a failure if git + dies in an unexpected way (e.g. segfault). + + On the other hand, don't use test_must_fail for running regular + platform commands; just use '! cmd'. + + - use perl without spelling it as "$PERL_PATH". This is to help our + friends on Windows where the platform Perl often adds CR before + the end of line, and they bundle Git with a version of Perl that + does not do so, whose path is specified with $PERL_PATH. + + - use sh without spelling it as "$SHELL_PATH", when the script can + be misinterpreted by broken platform shell (e.g. Solaris). + + - chdir around in tests. It is not sufficient to chdir to + somewhere and then chdir back to the original location later in + the test, as any intermediate step can fail and abort the test, + causing the next test to start in an unexpected directory. Do so + inside a subshell if necessary. + - Break the TAP output The raw output from your test may be interpreted by a TAP harness. TAP @@ -342,9 +376,9 @@ If you need to skip tests you should do so by using the three-arg form of the test_* functions (see the "Test harness library" section below), e.g.: - test_expect_success PERL 'I need Perl' " - '$PERL_PATH' -e 'hlagh() if unf_unf()' - " + test_expect_success PERL 'I need Perl' ' + "$PERL_PATH" -e "hlagh() if unf_unf()" + ' The advantage of skipping tests like this is that platforms that don't have the PERL and other optional dependencies get an indication of how @@ -561,6 +595,20 @@ library for your script to use. test_cmp expected actual ' + - test_ln_s_add <path1> <path2> + + This function helps systems whose filesystem does not support symbolic + links. Use it to add a symbolic link entry to the index when it is not + important that the file system entry is a symbolic link, i.e., instead + of the sequence + + ln -s foo bar && + git add bar + + Sometimes it is possible to split a test in a part that does not need + the symbolic link in the file system and a part that does; then only + the latter part need be protected by a SYMLINKS prerequisite (see below). + Prerequisites ------------- @@ -591,6 +639,11 @@ use these, and "test_set_prereq" for how to define your own. The process retains the same pid across exec(2). See fb9a2bea for details. + - PIPE + + The filesystem we're on supports creation of FIFOs (named pipes) + via mkfifo(1). + - SYMLINKS The filesystem we're on supports symbolic links. E.g. a FAT @@ -606,6 +659,15 @@ use these, and "test_set_prereq" for how to define your own. Git was compiled with USE_LIBPCRE=YesPlease. Wrap any tests that use git-grep --perl-regexp or git-grep -P in these. + - CASE_INSENSITIVE_FS + + Test is run on a case insensitive file system. + + - UTF8_NFD_TO_NFC + + Test is run on a filesystem which converts decomposed utf-8 (nfd) + to precomposed utf-8 (nfc). + Tips for Writing Tests ---------------------- |