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Diffstat (limited to 't/README')
| -rw-r--r-- | t/README | 251 |
1 files changed, 231 insertions, 20 deletions
@@ -71,11 +71,24 @@ You can pass --verbose (or -v), --debug (or -d), and --immediate (or -i) command line argument to the test, or by setting GIT_TEST_OPTS appropriately before running "make". +-v:: --verbose:: This makes the test more verbose. Specifically, the command being run and their output if any are also output. +--verbose-only=<pattern>:: + Like --verbose, but the effect is limited to tests with + numbers matching <pattern>. The number matched against is + simply the running count of the test within the file. + +-x:: + Turn on shell tracing (i.e., `set -x`) during the tests + themselves. Implies `--verbose`. Note that this can cause + failures in some tests which redirect and test the + output of shell functions. Use with caution. + +-d:: --debug:: This may help the person who is developing a new test. It causes the command defined with test_debug to run. @@ -84,31 +97,56 @@ appropriately before running "make". failed tests so that you can inspect its contents after the test finished. +-i:: --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. +-l:: --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. +-r:: +--run=<test-selector>:: + Run only the subset of tests indicated by + <test-selector>. See section "Skipping Tests" below for + <test-selector> syntax. + +--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 the 't/valgrind/' directory and use the commands under 't/valgrind/bin/'. +--valgrind-only=<pattern>:: + Like --valgrind, but the effect is limited to tests with + numbers matching <pattern>. The number matched against is + simply the running count of the test within the file. + --tee:: In addition to printing the test output to the terminal, write it to files named 't/test-results/$TEST_NAME.out'. @@ -130,6 +168,16 @@ appropriately before running "make". Using this option with a RAM-based filesystem (such as tmpfs) can massively speed up the test suite. +--chain-lint:: +--no-chain-lint:: + If --chain-lint is enabled, the test harness will check each + test to make sure that it properly "&&-chains" all commands (so + that a failure in the middle does not go unnoticed by the final + exit code of the test). This check is performed in addition to + running the tests themselves. You may also enable or disable + this feature by setting the GIT_TEST_CHAIN_LINT environment + variable to "1" or "0", respectively. + You can also set the GIT_TEST_INSTALLED environment variable to the bindir of an existing git installation to test that installation. You still need to have built this git sandbox, from which various @@ -165,10 +213,77 @@ and either can match the "t[0-9]{4}" part to skip the whole test, or t[0-9]{4} followed by ".$number" to say which particular test to skip. -Note that some tests in the existing test suite rely on previous -test item, so you cannot arbitrarily disable one and expect the -remainder of test to check what the test originally was intended -to check. +For an individual test suite --run could be used to specify that +only some tests should be run or that some tests should be +excluded from a run. + +The argument for --run is a list of individual test numbers or +ranges with an optional negation prefix that define what tests in +a test suite to include in the run. A range is two numbers +separated with a dash and matches a range of tests with both ends +been included. You may omit the first or the second number to +mean "from the first test" or "up to the very last test" +respectively. + +Optional prefix of '!' means that the test or a range of tests +should be excluded from the run. + +If --run starts with an unprefixed number or range the initial +set of tests to run is empty. If the first item starts with '!' +all the tests are added to the initial set. After initial set is +determined every test number or range is added or excluded from +the set one by one, from left to right. + +Individual numbers or ranges could be separated either by a space +or a comma. + +For example, to run only tests up to a specific test (21), one +could do this: + + $ sh ./t9200-git-cvsexport-commit.sh --run='1-21' + +or this: + + $ sh ./t9200-git-cvsexport-commit.sh --run='-21' + +Common case is to run several setup tests (1, 2, 3) and then a +specific test (21) that relies on that setup: + + $ sh ./t9200-git-cvsexport-commit.sh --run='1 2 3 21' + +or: + + $ sh ./t9200-git-cvsexport-commit.sh --run=1,2,3,21 + +or: + + $ sh ./t9200-git-cvsexport-commit.sh --run='-3 21' + +As noted above, the test set is built going though items left to +right, so this: + + $ sh ./t9200-git-cvsexport-commit.sh --run='1-4 !3' + +will run tests 1, 2, and 4. Items that comes later have higher +precendence. It means that this: + + $ sh ./t9200-git-cvsexport-commit.sh --run='!3 1-4' + +would just run tests from 1 to 4, including 3. + +You may use negation with ranges. The following will run all +test in the test suite except from 7 up to 11: + + $ sh ./t9200-git-cvsexport-commit.sh --run='!7-11' + +Some tests in a test suite rely on the previous tests performing +certain actions, specifically some tests are designated as +"setup" test, so you cannot _arbitrarily_ disable one test and +expect the rest to function correctly. + +--run is mostly useful when you want to focus on a specific test +and know what setup is needed for it. Or when you want to run +everything up to a certain test. Naming Tests @@ -307,6 +422,33 @@ 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'. We are not in the business + of verifying that the world given to us sanely works. + + - 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. Note that we + provide a "perl" function which uses $PERL_PATH under the hood, so + you do not need to worry when simply running perl in the test scripts + (but you do, for example, on a shebang line or in a sub script + created via "write_script"). + + - use sh without spelling it as "$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 +484,9 @@ 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' " - '$PERL_PATH' -e 'hlagh() if unf_unf()' - " + test_expect_success PERL 'I need Perl' ' + perl -e "hlagh() if unf_unf()" + ' The advantage of skipping tests like this is that platforms that don't have the PERL and other optional dependencies get an indication of how @@ -476,7 +618,7 @@ library for your script to use. test_external \ 'GitwebCache::*FileCache*' \ - "$PERL_PATH" "$TEST_DIRECTORY"/t9503/test_cache_interface.pl + perl "$TEST_DIRECTORY"/t9503/test_cache_interface.pl If the test is outputting its own TAP you should set the test_external_has_tap variable somewhere before calling the first @@ -492,7 +634,7 @@ library for your script to use. test_external_without_stderr \ 'Perl API' \ - "$PERL_PATH" "$TEST_DIRECTORY"/t9700/test.pl + perl "$TEST_DIRECTORY"/t9700/test.pl - test_expect_code <exit-code> <command> @@ -548,6 +690,54 @@ library for your script to use. ... ' + - test_write_lines <lines> + + Write <lines> on standard output, one line per argument. + Useful to prepare multi-line files in a compact form. + + Example: + + test_write_lines a b c d e f g >foo + + Is a more compact equivalent of: + cat >foo <<-EOF + a + b + c + d + e + f + g + EOF + + + - test_pause + + This command is useful for writing and debugging tests and must be + removed before submitting. It halts the execution of the test and + spawns a shell in the trash directory. Exit the shell to continue + the test. Example: + + test_expect_success 'test' ' + git do-something >actual && + test_pause && + 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 ------------- @@ -558,11 +748,18 @@ 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 + - PYTHON + + Git wasn't compiled with NO_PYTHON=YesPlease. Wrap any tests that + need Python with this. + + - PERL + + Git wasn't compiled with NO_PERL=YesPlease. - Git wasn't compiled with NO_PERL=YesPlease or - NO_PYTHON=YesPlease. Wrap any tests that need Perl or Python in - these. + Even without the PERL prerequisite, tests can assume there is a + usable perl interpreter at $PERL_PATH, though it need not be + particularly modern. - POSIXPERM @@ -578,6 +775,11 @@ 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 @@ -593,6 +795,15 @@ 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 ---------------------- |