1 # Library of functions shared by all tests scripts, included by
4 # Copyright (c) 2005 Junio C Hamano
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see http://www.gnu.org/licenses/ .
19 # The semantics of the editor variables are that of invoking
20 # sh -c "$EDITOR \"$@\"" files ...
22 # If our trash directory contains shell metacharacters, they will be
23 # interpreted if we just set $EDITOR directly, so do a little dance with
24 # environment variables to work around this.
26 # In particular, quoting isn't enough, as the path may contain the same quote
31 EDITOR='"$FAKE_EDITOR"'
35 test_set_index_version () {
36 GIT_INDEX_VERSION="$1"
37 export GIT_INDEX_VERSION
40 test_decode_color () {
43 if (n == 0) return "RESET";
44 if (n == 1) return "BOLD";
45 if (n == 30) return "BLACK";
46 if (n == 31) return "RED";
47 if (n == 32) return "GREEN";
48 if (n == 33) return "YELLOW";
49 if (n == 34) return "BLUE";
50 if (n == 35) return "MAGENTA";
51 if (n == 36) return "CYAN";
52 if (n == 37) return "WHITE";
53 if (n == 40) return "BLACK";
54 if (n == 41) return "BRED";
55 if (n == 42) return "BGREEN";
56 if (n == 43) return "BYELLOW";
57 if (n == 44) return "BBLUE";
58 if (n == 45) return "BMAGENTA";
59 if (n == 46) return "BCYAN";
60 if (n == 47) return "BWHITE";
63 while (match($0, /\033\[[0-9;]*m/) != 0) {
64 printf "%s<", substr($0, 1, RSTART-1);
65 codes = substr($0, RSTART+2, RLENGTH-3);
66 if (length(codes) == 0)
69 n = split(codes, ary, ";");
71 for (i = 1; i <= n; i++) {
72 printf "%s%s", sep, name(ary[i]);
77 $0 = substr($0, RSTART + RLENGTH, length($0) - RSTART - RLENGTH + 1);
85 perl -pe 'y/\012/\000/'
109 sed -e 's/$/Q/' | tr Q '\015'
113 tr '\015' Q | sed -e 's/Q$//'
116 # In some bourne shell implementations, the "unset" builtin returns
117 # nonzero status when a variable to be unset was not set in the first
120 # Use sane_unset when that should not be considered an error.
128 if test -z "${test_tick+set}"
132 test_tick=$(($test_tick + 60))
134 GIT_COMMITTER_DATE="$test_tick -0700"
135 GIT_AUTHOR_DATE="$test_tick -0700"
136 export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
139 # Stop execution and start a shell. This is useful for debugging tests and
140 # only makes sense together with "-v".
142 # Be sure to remove all invocations of this command before submitting.
145 if test "$verbose" = t; then
146 "$SHELL_PATH" <&6 >&3 2>&4
148 error >&5 "test_pause requires --verbose"
152 # Wrap git in gdb. Adding this to a command can make it easier to
153 # understand what is going on in a failing test.
155 # Example: "debug git checkout master".
160 # Call test_commit with the arguments "<message> [<file> [<contents> [<tag>]]]"
162 # This will commit a file with the given contents and the given commit
163 # message, and tag the resulting commit with the given tag name.
165 # <file>, <contents>, and <tag> all default to <message>.
186 echo "${3-$1}" > "$file" &&
192 git commit $signoff -m "$1" &&
196 # Call test_merge with the arguments "<message> <commit>", where <commit>
197 # can be a tag pointing to the commit-to-merge.
201 git merge -m "$1" "$2" &&
205 # This function helps systems where core.filemode=false is set.
206 # Use it instead of plain 'chmod +x' to set or unset the executable bit
207 # of a file in the working directory and add it to the index.
211 git update-index --add "--chmod=$@"
214 # Unset a configuration variable, but don't fail if it doesn't exist.
223 git ${config_dir:+-C "$config_dir"} config --unset-all "$@"
225 case "$config_status" in
226 5) # ok, nothing to unset
230 return $config_status
233 # Set git config, automatically unsetting it after the test is over.
242 test_when_finished "test_unconfig ${config_dir:+-C '$config_dir'} '$1'" &&
243 git ${config_dir:+-C "$config_dir"} config "$@"
246 test_config_global () {
247 test_when_finished "test_unconfig --global '$1'" &&
248 git config --global "$@"
253 echo "#!${2-"$SHELL_PATH"}" &&
259 # Use test_set_prereq to tell that a particular prerequisite is available.
260 # The prerequisite can later be checked for in two ways:
262 # - Explicitly using test_have_prereq.
264 # - Implicitly by specifying the prerequisite tag in the calls to
265 # test_expect_{success,failure,code}.
267 # The single parameter is the prerequisite tag (a simple word, in all
268 # capital letters by convention).
271 satisfied_prereq="$satisfied_prereq$1 "
274 lazily_testable_prereq= lazily_tested_prereq=
276 # Usage: test_lazy_prereq PREREQ 'script'
277 test_lazy_prereq () {
278 lazily_testable_prereq="$lazily_testable_prereq$1 "
279 eval test_prereq_lazily_$1=\$2
282 test_run_lazy_prereq_ () {
284 mkdir -p "$TRASH_DIRECTORY/prereq-test-dir" &&
286 cd "$TRASH_DIRECTORY/prereq-test-dir" &&'"$2"'
288 say >&3 "checking prerequisite: $1"
292 rm -rf "$TRASH_DIRECTORY/prereq-test-dir"
293 if test "$eval_ret" = 0; then
294 say >&3 "prerequisite $1 ok"
296 say >&3 "prerequisite $1 not satisfied"
301 test_have_prereq () {
302 # prerequisites can be concatenated with ','
314 case "$prerequisite" in
317 prerequisite=${prerequisite#!}
323 case " $lazily_tested_prereq " in
327 case " $lazily_testable_prereq " in
329 eval "script=\$test_prereq_lazily_$prerequisite" &&
330 if test_run_lazy_prereq_ "$prerequisite" "$script"
332 test_set_prereq $prerequisite
334 lazily_tested_prereq="$lazily_tested_prereq$prerequisite "
339 total_prereq=$(($total_prereq + 1))
340 case "$satisfied_prereq" in
342 satisfied_this_prereq=t
345 satisfied_this_prereq=
348 case "$satisfied_this_prereq,$negative_prereq" in
350 ok_prereq=$(($ok_prereq + 1))
353 # Keep a list of missing prerequisites; restore
354 # the negative marker if necessary.
355 prerequisite=${negative_prereq:+!}$prerequisite
356 if test -z "$missing_prereq"
358 missing_prereq=$prerequisite
360 missing_prereq="$prerequisite,$missing_prereq"
365 test $total_prereq = $ok_prereq
368 test_declared_prereq () {
369 case ",$test_prereq," in
377 test_verify_prereq () {
378 test -z "$test_prereq" ||
379 expr >/dev/null "$test_prereq" : '[A-Z0-9_,!]*$' ||
380 error "bug in the test script: '$test_prereq' does not look like a prereq"
383 test_expect_failure () {
385 test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
387 error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
392 say >&3 "checking known breakage: $2"
393 if test_run_ "$2" expecting_failure
395 test_known_broken_ok_ "$1"
397 test_known_broken_failure_ "$1"
403 test_expect_success () {
405 test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
407 error "bug in the test script: not 2 or 3 parameters to test-expect-success"
412 say >&3 "expecting success: $2"
423 # test_external runs external test scripts that provide continuous
424 # test output about their progress, and succeeds/fails on
425 # zero/non-zero exit code. It outputs the test output on stdout even
426 # in non-verbose mode, and announces the external script with "# run
427 # <n>: ..." before running it. When providing relative paths, keep in
428 # mind that all scripts run in "trash directory".
429 # Usage: test_external description command arguments...
430 # Example: test_external 'Perl API' perl ../path/to/test.pl
432 test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq=
434 error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
439 if ! test_skip "$descr" "$@"
441 # Announce the script to reduce confusion about the
442 # test output that follows.
443 say_color "" "# run $test_count: $descr ($*)"
444 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG
445 # to be able to use them in script
446 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG
447 # Run command; redirect its stderr to &4 as in
448 # test_run_, but keep its stdout on our stdout even in
453 if test $test_external_has_tap -eq 0; then
456 say_color "" "# test_external test $descr was ok"
457 test_success=$(($test_success + 1))
460 if test $test_external_has_tap -eq 0; then
461 test_failure_ "$descr" "$@"
463 say_color error "# test_external test $descr failed: $@"
464 test_failure=$(($test_failure + 1))
470 # Like test_external, but in addition tests that the command generated
471 # no output on stderr.
472 test_external_without_stderr () {
473 # The temporary file has no (and must have no) security
476 stderr="$tmp/git-external-stderr.$$.tmp"
477 test_external "$@" 4> "$stderr"
478 test -f "$stderr" || error "Internal error: $stderr disappeared."
479 descr="no stderr: $1"
481 say >&3 "# expecting no stderr from previous command"
482 if test ! -s "$stderr"
486 if test $test_external_has_tap -eq 0; then
489 say_color "" "# test_external_without_stderr test $descr was ok"
490 test_success=$(($test_success + 1))
493 if test "$verbose" = t
495 output=$(echo; echo "# Stderr is:"; cat "$stderr")
499 # rm first in case test_failure exits.
501 if test $test_external_has_tap -eq 0; then
502 test_failure_ "$descr" "$@" "$output"
504 say_color error "# test_external_without_stderr test $descr failed: $@: $output"
505 test_failure=$(($test_failure + 1))
510 # debugging-friendly alternatives to "test [-f|-d|-e]"
511 # The commands test the existence or non-existence of $1. $2 can be
512 # given to provide a more precise diagnosis.
513 test_path_is_file () {
516 echo "File $1 doesn't exist. $2"
521 test_path_is_dir () {
524 echo "Directory $1 doesn't exist. $2"
529 # Check if the directory exists and is empty as expected, barf otherwise.
530 test_dir_is_empty () {
531 test_path_is_dir "$1" &&
532 if test -n "$(ls -a1 "$1" | egrep -v '^\.\.?$')"
534 echo "Directory '$1' is not empty, it contains:"
540 test_path_is_missing () {
553 # test_line_count checks that a file has the number of lines it
554 # ought to. For example:
556 # test_expect_success 'produce exactly one line of output' '
557 # do something >output &&
558 # test_line_count = 1 output
561 # is like "test $(wc -l <output) = 1" except that it passes the
562 # output through when the number of lines is wrong.
567 error "bug in the test script: not 3 parameters to test_line_count"
568 elif ! test $(wc -l <"$3") "$1" "$2"
570 echo "test_line_count: line count for $3 !$1 $2"
576 # Returns success if a comma separated string of keywords ($1) contains a
577 # given keyword ($2).
579 # `list_contains "foo,bar" bar` returns 0
580 # `list_contains "foo" bar` returns 1
591 # This is not among top-level (test_expect_success | test_expect_failure)
592 # but is a prefix that can be used in the test script, like:
594 # test_expect_success 'complain and die' '
596 # do something else &&
597 # test_must_fail git checkout ../outerspace
600 # Writing this as "! git checkout ../outerspace" is wrong, because
601 # the failure could be due to a segv. We want a controlled failure.
615 if test $exit_code -eq 0 && ! list_contains "$_test_ok" success
617 echo >&2 "test_must_fail: command succeeded: $*"
619 elif test_match_signal 13 $exit_code && list_contains "$_test_ok" sigpipe
622 elif test $exit_code -gt 129 && test $exit_code -le 192
624 echo >&2 "test_must_fail: died by signal $(($exit_code - 128)): $*"
626 elif test $exit_code -eq 127
628 echo >&2 "test_must_fail: command not found: $*"
630 elif test $exit_code -eq 126
632 echo >&2 "test_must_fail: valgrind error: $*"
638 # Similar to test_must_fail, but tolerates success, too. This is
639 # meant to be used in contexts like:
641 # test_expect_success 'some command works without configuration' '
642 # test_might_fail git config --unset all.configuration &&
646 # Writing "git config --unset all.configuration || :" would be wrong,
647 # because we want to notice if it fails due to segv.
650 test_must_fail ok=success "$@"
653 # Similar to test_must_fail and test_might_fail, but check that a
654 # given command exited with a given exit code. Meant to be used as:
656 # test_expect_success 'Merge with d/f conflicts' '
657 # test_expect_code 1 git merge "merge msg" B master
660 test_expect_code () {
665 if test $exit_code = $want_code
670 echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
674 # test_cmp is a helper function to compare actual and expected output.
675 # You can use it like:
677 # test_expect_success 'foo works' '
678 # echo expected >expected &&
680 # test_cmp expected actual
683 # This could be written as either "cmp" or "diff -u", but:
684 # - cmp's output is not nearly as easy to read as diff -u
685 # - not all diff versions understand "-u"
691 # test_cmp_bin - helper to compare binary files
697 # Call any command "$@" but be more verbose about its
698 # failure. This is handy for commands like "test" which do
699 # not output anything when they fail.
702 echo >&2 "command failed: $(git rev-parse --sq-quote "$@")"
706 # Check if the file expected to be empty is indeed empty, and barfs
709 test_must_be_empty () {
712 echo "'$1' is not empty, it contains:"
718 # Tests that its two parameters refer to the same revision
720 git rev-parse --verify "$1" >expect.rev &&
721 git rev-parse --verify "$2" >actual.rev &&
722 test_cmp expect.rev actual.rev
725 # Print a sequence of integers in increasing order, either with
726 # two arguments (start and end):
728 # test_seq 1 5 -- outputs 1 2 3 4 5 one line at a time
730 # or with one argument (end), in which case it starts counting
737 *) error "bug in the test script: not 1 or 2 parameters to test_seq" ;;
739 test_seq_counter__=$1
740 while test "$test_seq_counter__" -le "$2"
742 echo "$test_seq_counter__"
743 test_seq_counter__=$(( $test_seq_counter__ + 1 ))
747 # This function can be used to schedule some commands to be run
748 # unconditionally at the end of the test to restore sanity:
750 # test_expect_success 'test core.capslock' '
751 # git config core.capslock true &&
752 # test_when_finished "git config --unset core.capslock" &&
756 # That would be roughly equivalent to
758 # test_expect_success 'test core.capslock' '
759 # git config core.capslock true &&
761 # git config --unset core.capslock
764 # except that the greeting and config --unset must both succeed for
767 # Note that under --immediate mode, no clean-up is done to help diagnose
770 test_when_finished () {
771 # We cannot detect when we are in a subshell in general, but by
772 # doing so on Bash is better than nothing (the test will
773 # silently pass on other shells).
774 test "${BASH_SUBSHELL-0}" = 0 ||
775 error "bug in test script: test_when_finished does nothing in a subshell"
777 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
780 # Most tests can use the created repository, but some may need to create more.
781 # Usage: test_create_repo <directory>
782 test_create_repo () {
784 error "bug in the test script: not 1 parameter to test-create-repo"
788 cd "$repo" || error "Cannot setup test environment"
789 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
790 error "cannot run git init -- have you built things yet?"
791 mv .git/hooks .git/hooks-disabled
795 # This function helps on symlink challenged file systems when it is not
796 # important that the file system entry is a symbolic link.
797 # Use test_ln_s_add instead of "ln -s x y && git add y" to add a
798 # symbolic link entry y to the index.
801 if test_have_prereq SYMLINKS
804 git update-index --add "$2"
806 printf '%s' "$1" >"$2" &&
807 ln_s_obj=$(git hash-object -w "$2") &&
808 git update-index --add --cacheinfo 120000 $ln_s_obj "$2" &&
809 # pick up stat info from the file
810 git update-index "$2"
814 # This function writes out its parameters, one per line
815 test_write_lines () {
820 command "$PERL_PATH" "$@"
823 # Is the value one of the various ways to spell a boolean true/false?
824 test_normalize_bool () {
825 git -c magic.variable="$1" config --bool magic.variable 2>/dev/null
828 # Given a variable $1, normalize the value of it to one of "true",
829 # "false", or "auto" and store the result to it.
831 # test_tristate GIT_TEST_HTTPD
833 # A variable set to an empty string is set to 'false'.
834 # A variable set to 'false' or 'auto' keeps its value.
835 # Anything else is set to 'true'.
836 # An unset variable defaults to 'auto'.
838 # The last rule is to allow people to set the variable to an empty
839 # string and export it to decline testing the particular feature
840 # for versions both before and after this change. We used to treat
841 # both unset and empty variable as a signal for "do not test" and
842 # took any non-empty string as "please test".
845 if eval "test x\"\${$1+isset}\" = xisset"
852 *) $1=\$(test_normalize_bool \$$1 || echo true) ;;
860 # Exit the test suite, either by skipping all remaining tests or by
861 # exiting with an error. If "$1" is "auto", we then we assume we were
862 # opportunistically trying to set up some tests and we skip. If it is
863 # "true", then we report a failure.
865 # The error/skip message should be given by $2.
867 test_skip_or_die () {
877 error "BUG: test tristate is '$1' (real error: $2)"
881 # The following mingw_* functions obey POSIX shell syntax, but are actually
882 # bash scripts, and are meant to be used only with bash on Windows.
884 # A test_cmp function that treats LF and CRLF equal and avoids to fork
885 # diff when possible.
887 # Read text into shell variables and compare them. If the results
888 # are different, use regular diff to report the difference.
889 local test_cmp_a= test_cmp_b=
891 # When text came from stdin (one argument is '-') we must feed it
893 local stdin_for_diff=
895 # Since it is difficult to detect the difference between an
896 # empty input file and a failure to read the files, we go straight
897 # to diff if one of the inputs is empty.
898 if test -s "$1" && test -s "$2"
900 # regular case: both files non-empty
901 mingw_read_file_strip_cr_ test_cmp_a <"$1"
902 mingw_read_file_strip_cr_ test_cmp_b <"$2"
903 elif test -s "$1" && test "$2" = -
905 # read 2nd file from stdin
906 mingw_read_file_strip_cr_ test_cmp_a <"$1"
907 mingw_read_file_strip_cr_ test_cmp_b
908 stdin_for_diff='<<<"$test_cmp_b"'
909 elif test "$1" = - && test -s "$2"
911 # read 1st file from stdin
912 mingw_read_file_strip_cr_ test_cmp_a
913 mingw_read_file_strip_cr_ test_cmp_b <"$2"
914 stdin_for_diff='<<<"$test_cmp_a"'
916 test -n "$test_cmp_a" &&
917 test -n "$test_cmp_b" &&
918 test "$test_cmp_a" = "$test_cmp_b" ||
919 eval "diff -u \"\$@\" $stdin_for_diff"
922 # $1 is the name of the shell variable to fill in
923 mingw_read_file_strip_cr_ () {
924 # Read line-wise using LF as the line separator
925 # and use IFS to strip CR.
929 if IFS=$'\r' read -r -d $'\n' line
934 # we get here at EOF, but also if the last line
935 # was not terminated by LF; in the latter case,
947 # Like "env FOO=BAR some-program", but run inside a subshell, which means
948 # it also works for shell functions (though those functions cannot impact
949 # the environment outside of the test_env invocation).
956 eval "${1%%=*}=\${1#*=}"
957 eval "export ${1%%=*}"
969 # Returns true if the numeric exit code in "$2" represents the expected signal
970 # in "$1". Signals should be given numerically.
971 test_match_signal () {
972 if test "$2" = "$((128 + $1))"
976 elif test "$2" = "$((256 + $1))"
984 # Read up to "$1" bytes (or to EOF) from stdin and write them to stdout.
990 my $nread = sysread(STDIN, $s, $len);
991 die "cannot read: $!" unless defined($nread);