t/README: add a bit more Don'ts
[git/git.git] / t / test-lib.sh
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1#!/bin/sh
2#
3# Copyright (c) 2005 Junio C Hamano
4#
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5# This program is free software: you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation, either version 2 of the License, or
8# (at your option) any later version.
9#
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13# GNU General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program. If not, see http://www.gnu.org/licenses/ .
e1970ce4 17
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18# if --tee was passed, write the output not only to the terminal, but
19# additionally to the file test-results/$BASENAME.out, too.
20case "$GIT_TEST_TEE_STARTED, $* " in
21done,*)
22 # do not redirect again
23 ;;
3da93652 24*' --tee '*|*' --va'*)
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25 mkdir -p test-results
26 BASE=test-results/$(basename "$0" .sh)
27 (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
28 echo $? > $BASE.exit) | tee $BASE.out
29 test "$(cat $BASE.exit)" = 0
30 exit
31 ;;
32esac
33
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34# Keep the original TERM for say_color
35ORIGINAL_TERM=$TERM
36
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37# For repeatability, reset the environment to known value.
38LANG=C
899460f3 39LC_ALL=C
d9bdd39e 40PAGER=cat
e1970ce4 41TZ=UTC
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42TERM=dumb
43export LANG LC_ALL PAGER TERM TZ
8ff99e74 44EDITOR=:
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45# A call to "unset" with no arguments causes at least Solaris 10
46# /usr/xpg4/bin/sh and /bin/ksh to bail out. So keep the unsets
47# deriving from the command substitution clustered with the other
48# ones.
b1d645b5 49unset VISUAL EMAIL LANGUAGE COLUMNS $(perl -e '
95a1d12e 50 my @env = keys %ENV;
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51 my $ok = join("|", qw(
52 TRACE
53 DEBUG
54 USE_LOOKUP
55 TEST
56 .*_TEST
57 PROVE
58 VALGRIND
342e9ef2 59 PERF_AGGREGATING_LATER
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60 ));
61 my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
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62 print join("\n", @vars);
63')
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64GIT_AUTHOR_EMAIL=author@example.com
65GIT_AUTHOR_NAME='A U Thor'
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66GIT_COMMITTER_EMAIL=committer@example.com
67GIT_COMMITTER_NAME='C O Mitter'
8d0fc48f 68GIT_MERGE_VERBOSITY=5
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69GIT_MERGE_AUTOEDIT=no
70export GIT_MERGE_VERBOSITY GIT_MERGE_AUTOEDIT
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71export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
72export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
d33738d7 73export EDITOR
e1970ce4 74
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75# Protect ourselves from common misconfiguration to export
76# CDPATH into the environment
77unset CDPATH
78
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79unset GREP_OPTIONS
80
3d5c0cc9 81case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
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82 1|2|true)
83 echo "* warning: Some tests will not work if GIT_TRACE" \
84 "is set as to trace on STDERR ! *"
85 echo "* warning: Please set GIT_TRACE to something" \
86 "other than 1, 2 or true ! *"
87 ;;
88esac
89
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90# Convenience
91#
92# A regexp to match 5 and 40 hexdigits
93_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
94_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
95
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96# Zero SHA-1
97_z40=0000000000000000000000000000000000000000
98
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99# Line feed
100LF='
101'
102
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103export _x05 _x40 _z40 LF
104
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105# Each test should start with something like this, after copyright notices:
106#
107# test_description='Description of this test...
108# This test checks if command xyzzy does the right thing...
109# '
110# . ./test-lib.sh
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111[ "x$ORIGINAL_TERM" != "xdumb" ] && (
112 TERM=$ORIGINAL_TERM &&
113 export TERM &&
114 [ -t 1 ] &&
115 tput bold >/dev/null 2>&1 &&
116 tput setaf 1 >/dev/null 2>&1 &&
117 tput sgr0 >/dev/null 2>&1
118 ) &&
55db1df0 119 color=t
e1970ce4 120
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121while test "$#" -ne 0
122do
123 case "$1" in
124 -d|--d|--de|--deb|--debu|--debug)
125 debug=t; shift ;;
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126 -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
127 immediate=t; shift ;;
5e2c08c6 128 -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
91e80b98 129 GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
e1970ce4 130 -h|--h|--he|--hel|--help)
570f3226 131 help=t; shift ;;
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132 -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
133 verbose=t; shift ;;
1ece1274 134 -q|--q|--qu|--qui|--quie|--quiet)
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135 # Ignore --quiet under a TAP::Harness. Saying how many tests
136 # passed without the ok/not ok details is always an error.
137 test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
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138 --with-dashes)
139 with_dashes=t; shift ;;
55db1df0 140 --no-color)
faa4bc35 141 color=; shift ;;
4e1be63c 142 --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
3da93652 143 valgrind=t; verbose=t; shift ;;
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144 --tee)
145 shift ;; # was handled already
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146 --root=*)
147 root=$(expr "z$1" : 'z[^=]*=\(.*\)')
148 shift ;;
e1970ce4 149 *)
1f729dca 150 echo "error: unknown test option '$1'" >&2; exit 1 ;;
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151 esac
152done
153
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154if test -n "$color"; then
155 say_color () {
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156 (
157 TERM=$ORIGINAL_TERM
158 export TERM
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159 case "$1" in
160 error) tput bold; tput setaf 1;; # bold red
161 skip) tput bold; tput setaf 2;; # bold green
162 pass) tput setaf 2;; # green
163 info) tput setaf 3;; # brown
1ece1274 164 *) test -n "$quiet" && return;;
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165 esac
166 shift
5099b99d 167 printf "%s" "$*"
55db1df0 168 tput sgr0
b8eecafd 169 echo
c2116a17 170 )
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171 }
172else
173 say_color() {
1ece1274 174 test -z "$1" && test -n "$quiet" && return
55db1df0 175 shift
5099b99d 176 echo "$*"
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177 }
178fi
179
180error () {
181 say_color error "error: $*"
6e7b5aaf 182 GIT_EXIT_OK=t
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183 exit 1
184}
185
186say () {
187 say_color info "$*"
188}
189
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190test "${test_description}" != "" ||
191error "Test script did not set test_description."
192
193if test "$help" = "t"
194then
195 echo "$test_description"
196 exit 0
197fi
198
4d9d62fa 199exec 5>&1
781f76b1 200exec 6<&0
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201if test "$verbose" = "t"
202then
203 exec 4>&2 3>&1
204else
205 exec 4>/dev/null 3>/dev/null
206fi
207
208test_failure=0
209test_count=0
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210test_fixed=0
211test_broken=0
2d84e9fb 212test_success=0
e1970ce4 213
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214test_external_has_tap=0
215
faa4bc35 216die () {
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217 code=$?
218 if test -n "$GIT_EXIT_OK"
219 then
220 exit $code
221 else
222 echo >&5 "FATAL: Unexpected exit with code $code"
223 exit 1
224 fi
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225}
226
6e7b5aaf 227GIT_EXIT_OK=
35641310 228trap 'die' EXIT
41184273 229
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230# The user-facing functions are loaded from a separate file so that
231# test_perf subshells can have them too
232. "${TEST_DIRECTORY:-.}"/test-lib-functions.sh
05236a5e 233
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234# You are not expected to call test_ok_ and test_failure_ directly, use
235# the text_expect_* functions instead.
236
237test_ok_ () {
d5d9de1b 238 test_success=$(($test_success + 1))
5099b99d 239 say_color "" "ok $test_count - $@"
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240}
241
886856ab 242test_failure_ () {
d5d9de1b 243 test_failure=$(($test_failure + 1))
5099b99d 244 say_color error "not ok - $test_count $1"
bf0dd8a8 245 shift
5099b99d 246 echo "$@" | sed -e 's/^/# /'
6e7b5aaf 247 test "$immediate" = "" || { GIT_EXIT_OK=t; exit 1; }
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248}
249
41ac414e 250test_known_broken_ok_ () {
41ac414e 251 test_fixed=$(($test_fixed+1))
5099b99d 252 say_color "" "ok $test_count - $@ # TODO known breakage"
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253}
254
255test_known_broken_failure_ () {
41ac414e 256 test_broken=$(($test_broken+1))
5099b99d 257 say_color skip "not ok $test_count - $@ # TODO known breakage"
41ac414e 258}
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259
260test_debug () {
8e832ebc 261 test "$debug" = "" || eval "$1"
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262}
263
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264test_eval_ () {
265 # This is a separate function because some tests use
266 # "return" to end a test_expect_success block early.
781f76b1 267 eval </dev/null >&3 2>&4 "$*"
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268}
269
4d9d62fa 270test_run_ () {
b6b0afdc 271 test_cleanup=:
b586744a 272 expecting_failure=$2
a7c58f28 273 test_eval_ "$1"
b6b0afdc 274 eval_ret=$?
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275
276 if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
277 then
a7c58f28 278 test_eval_ "$test_cleanup"
b586744a 279 fi
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280 if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
281 echo ""
282 fi
aa0bcf96 283 return "$eval_ret"
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284}
285
04ece593 286test_skip () {
8586f98b 287 test_count=$(($test_count+1))
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288 to_skip=
289 for skp in $GIT_SKIP_TESTS
290 do
8586f98b 291 case $this_test.$test_count in
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292 $skp)
293 to_skip=t
47e67d47 294 break
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295 esac
296 done
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297 if test -z "$to_skip" && test -n "$test_prereq" &&
298 ! test_have_prereq "$test_prereq"
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299 then
300 to_skip=t
301 fi
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302 case "$to_skip" in
303 t)
07431fc8 304 of_prereq=
05236a5e 305 if test "$missing_prereq" != "$test_prereq"
07431fc8 306 then
05236a5e 307 of_prereq=" of $test_prereq"
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308 fi
309
55db1df0 310 say_color skip >&3 "skipping test: $@"
07431fc8 311 say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
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312 : true
313 ;;
314 *)
315 false
316 ;;
317 esac
318}
319
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320# stub; perf-lib overrides it
321test_at_end_hook_ () {
322 :
323}
324
e1970ce4 325test_done () {
6e7b5aaf 326 GIT_EXIT_OK=t
2d84e9fb 327
8ef1abe5 328 if test -z "$HARNESS_ACTIVE"; then
342e9ef2 329 test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
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330 mkdir -p "$test_results_dir"
331 test_results_path="$test_results_dir/${0%.sh}-$$.counts"
332
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333 cat >>"$test_results_path" <<-EOF
334 total $test_count
335 success $test_success
336 fixed $test_fixed
337 broken $test_broken
338 failed $test_failure
339
340 EOF
8ef1abe5 341 fi
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342
343 if test "$test_fixed" != 0
344 then
5099b99d 345 say_color pass "# fixed $test_fixed known breakage(s)"
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346 fi
347 if test "$test_broken" != 0
348 then
5099b99d 349 say_color error "# still have $test_broken known breakage(s)"
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350 msg="remaining $(($test_count-$test_broken)) test(s)"
351 else
352 msg="$test_count test(s)"
41ac414e 353 fi
e1970ce4 354 case "$test_failure" in
10b94e28 355 0)
5099b99d
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356 # Maybe print SKIP message
357 [ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
358
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359 if test $test_external_has_tap -eq 0; then
360 say_color pass "# passed all $msg"
361 say "1..$test_count$skip_all"
362 fi
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363
364 test -d "$remove_trash" &&
365 cd "$(dirname "$remove_trash")" &&
366 rm -rf "$(basename "$remove_trash")"
367
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368 test_at_end_hook_
369
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370 exit 0 ;;
371
372 *)
d998bd4a
ÆAB
373 if test $test_external_has_tap -eq 0; then
374 say_color error "# failed $test_failure among $msg"
375 say "1..$test_count"
376 fi
5099b99d 377
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378 exit 1 ;;
379
380 esac
381}
382
383# Test the binaries we have just built. The tests are kept in
9adefee5 384# t/ subdirectory and are run in 'trash directory' subdirectory.
62f53904
ÆAB
385if test -z "$TEST_DIRECTORY"
386then
387 # We allow tests to override this, in case they want to run tests
388 # outside of t/, e.g. for running tests on the test library
389 # itself.
390 TEST_DIRECTORY=$(pwd)
391fi
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392if test -z "$TEST_OUTPUT_DIRECTORY"
393then
394 # Similarly, override this to store the test-results subdir
395 # elsewhere
396 TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
397fi
6cec5c68
ÆAB
398GIT_BUILD_DIR="$TEST_DIRECTORY"/..
399
e4597aae 400if test -n "$valgrind"
4e1be63c 401then
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402 make_symlink () {
403 test -h "$2" &&
404 test "$1" = "$(readlink "$2")" || {
405 # be super paranoid
406 if mkdir "$2".lock
407 then
408 rm -f "$2" &&
409 ln -s "$1" "$2" &&
410 rm -r "$2".lock
411 else
412 while test -d "$2".lock
413 do
414 say "Waiting for lock on $2."
415 sleep 1
416 done
417 fi
418 }
419 }
420
421 make_valgrind_symlink () {
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422 # handle only executables, unless they are shell libraries that
423 # need to be in the exec-path. We will just use "#!" as a
424 # guess for a shell-script, since we have no idea what the user
425 # may have configured as the shell path.
426 test -x "$1" ||
427 test "#!" = "$(head -c 2 <"$1")" ||
428 return;
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429
430 base=$(basename "$1")
6cec5c68 431 symlink_target=$GIT_BUILD_DIR/$base
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432 # do not override scripts
433 if test -x "$symlink_target" &&
434 test ! -d "$symlink_target" &&
435 test "#!" != "$(head -c 2 < "$symlink_target")"
436 then
437 symlink_target=../valgrind.sh
438 fi
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439 case "$base" in
440 *.sh|*.perl)
441 symlink_target=../unprocessed-script
442 esac
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443 # create the link, or replace it if it is out of date
444 make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
445 }
446
447 # override all git executables in TEST_DIRECTORY/..
448 GIT_VALGRIND=$TEST_DIRECTORY/valgrind
449 mkdir -p "$GIT_VALGRIND"/bin
6cec5c68 450 for file in $GIT_BUILD_DIR/git* $GIT_BUILD_DIR/test-*
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451 do
452 make_valgrind_symlink $file
453 done
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454 # special-case the mergetools loadables
455 make_symlink "$GIT_BUILD_DIR"/mergetools "$GIT_VALGRIND/bin/mergetools"
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456 OLDIFS=$IFS
457 IFS=:
458 for path in $PATH
459 do
460 ls "$path"/git-* 2> /dev/null |
461 while read file
462 do
463 make_valgrind_symlink "$file"
464 done
465 done
466 IFS=$OLDIFS
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467 PATH=$GIT_VALGRIND/bin:$PATH
468 GIT_EXEC_PATH=$GIT_VALGRIND/bin
469 export GIT_VALGRIND
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470elif test -n "$GIT_TEST_INSTALLED" ; then
471 GIT_EXEC_PATH=$($GIT_TEST_INSTALLED/git --exec-path) ||
472 error "Cannot run git from $GIT_TEST_INSTALLED."
6cec5c68 473 PATH=$GIT_TEST_INSTALLED:$GIT_BUILD_DIR:$PATH
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474 GIT_EXEC_PATH=${GIT_TEST_EXEC_PATH:-$GIT_EXEC_PATH}
475else # normal case, use ../bin-wrappers only unless $with_dashes:
6cec5c68 476 git_bin_dir="$GIT_BUILD_DIR/bin-wrappers"
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477 if ! test -x "$git_bin_dir/git" ; then
478 if test -z "$with_dashes" ; then
479 say "$git_bin_dir/git is not executable; using GIT_EXEC_PATH"
480 fi
481 with_dashes=t
482 fi
483 PATH="$git_bin_dir:$PATH"
6cec5c68 484 GIT_EXEC_PATH=$GIT_BUILD_DIR
e4597aae 485 if test -n "$with_dashes" ; then
6cec5c68 486 PATH="$GIT_BUILD_DIR:$PATH"
e4597aae 487 fi
4e1be63c 488fi
6cec5c68 489GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
8bfa6bd6 490unset GIT_CONFIG
8bfa6bd6 491GIT_CONFIG_NOSYSTEM=1
3c995beb 492GIT_ATTR_NOSYSTEM=1
8f323c00 493export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM
49ccb087 494
aed604c7 495. "$GIT_BUILD_DIR"/GIT-BUILD-OPTIONS
ac10a857 496
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497export PERL_PATH
498
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499if test -z "$GIT_TEST_CMP"
500then
501 if test -n "$GIT_TEST_CMP_USE_COPIED_CONTEXT"
502 then
503 GIT_TEST_CMP="$DIFF -c"
504 else
505 GIT_TEST_CMP="$DIFF -u"
506 fi
507fi
508
6cec5c68 509GITPERLLIB="$GIT_BUILD_DIR"/perl/blib/lib:"$GIT_BUILD_DIR"/perl/blib/arch/auto/Git
6fcca938 510export GITPERLLIB
6cec5c68 511test -d "$GIT_BUILD_DIR"/templates/blt || {
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512 error "You haven't built things yet, have you?"
513}
e1970ce4 514
ac10a857 515if test -z "$GIT_TEST_INSTALLED" && test -z "$NO_PYTHON"
2fe40b63 516then
6cec5c68 517 GITPYTHONLIB="$GIT_BUILD_DIR/git_remote_helpers/build/lib"
2fe40b63 518 export GITPYTHONLIB
6cec5c68 519 test -d "$GIT_BUILD_DIR"/git_remote_helpers/build || {
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520 error "You haven't built git_remote_helpers yet, have you?"
521 }
522fi
523
6cec5c68 524if ! test -x "$GIT_BUILD_DIR"/test-chmtime; then
56cf9806
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525 echo >&2 'You need to build test-chmtime:'
526 echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
527 exit 1
528fi
529
e1970ce4 530# Test repository
abc5d372 531test="trash directory.$(basename "$0" .sh)"
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532test -n "$root" && test="$root/$test"
533case "$test" in
534/*) TRASH_DIRECTORY="$test" ;;
342e9ef2 535 *) TRASH_DIRECTORY="$TEST_OUTPUT_DIRECTORY/$test" ;;
f423ef5f 536esac
91c8b825 537test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY
8d14ac94 538rm -fr "$test" || {
6e7b5aaf 539 GIT_EXIT_OK=t
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540 echo >&5 "FATAL: Cannot prepare test area"
541 exit 1
542}
543
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544HOME="$TRASH_DIRECTORY"
545export HOME
546
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547if test -z "$TEST_NO_CREATE_REPO"; then
548 test_create_repo "$test"
549else
550 mkdir -p "$test"
551fi
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552# Use -P to resolve symlinks in our working directory so that the cwd
553# in subprocesses like git equals our $PWD (for pathname comparisons).
554cd -P "$test" || exit 1
04ece593 555
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556this_test=${0##*/}
557this_test=${this_test%%-*}
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558for skp in $GIT_SKIP_TESTS
559do
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560 case "$this_test" in
561 $skp)
55db1df0 562 say_color skip >&3 "skipping test $this_test altogether"
637ab29b 563 skip_all="skip all tests in $this_test"
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564 test_done
565 esac
566done
f17e9fbb 567
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568# Provide an implementation of the 'yes' utility
569yes () {
570 if test $# = 0
571 then
572 y=y
573 else
574 y="$*"
575 fi
576
577 while echo "$y"
578 do
579 :
580 done
581}
582
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583# Fix some commands on Windows
584case $(uname -s) in
585*MINGW*)
586 # Windows has its own (incompatible) sort and find
587 sort () {
588 /usr/bin/sort "$@"
589 }
590 find () {
591 /usr/bin/find "$@"
592 }
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593 sum () {
594 md5sum "$@"
595 }
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596 # git sees Windows-style pwd
597 pwd () {
598 builtin pwd -W
599 }
ee9fb68c 600 # no POSIX permissions
6fd1106a 601 # backslashes in pathspec are converted to '/'
fb9a2bea 602 # exec does not inherit the PID
a94114ad 603 test_set_prereq MINGW
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604 test_set_prereq SED_STRIPS_CR
605 ;;
606*CYGWIN*)
607 test_set_prereq POSIXPERM
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608 test_set_prereq EXECKEEPSPID
609 test_set_prereq NOT_MINGW
610 test_set_prereq SED_STRIPS_CR
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611 ;;
612*)
613 test_set_prereq POSIXPERM
6fd1106a 614 test_set_prereq BSLASHPSPEC
fb9a2bea 615 test_set_prereq EXECKEEPSPID
3ba9ba8f 616 test_set_prereq NOT_MINGW
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617 ;;
618esac
704a3143 619
b082687c 620( COLUMNS=1 && test $COLUMNS = 1 ) && test_set_prereq COLUMNS_CAN_BE_1
1b19ccd2 621test -z "$NO_PERL" && test_set_prereq PERL
d4e1b47a 622test -z "$NO_PYTHON" && test_set_prereq PYTHON
8f852ce6 623test -n "$USE_LIBPCRE" && test_set_prereq LIBPCRE
5e9637c6 624test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
1b19ccd2 625
bb946bba 626# Can we rely on git's output in the C locale?
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627if test -n "$GETTEXT_POISON"
628then
629 GIT_GETTEXT_POISON=YesPlease
630 export GIT_GETTEXT_POISON
5e9637c6 631 test_set_prereq GETTEXT_POISON
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632else
633 test_set_prereq C_LOCALE_OUTPUT
634fi
bb946bba 635
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636# Use this instead of test_cmp to compare files that contain expected and
637# actual output from git commands that can be translated. When running
638# under GETTEXT_POISON this pretends that the command produced expected
639# results.
640test_i18ncmp () {
641 test -n "$GETTEXT_POISON" || test_cmp "$@"
642}
643
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644# Use this instead of "grep expected-string actual" to see if the
645# output from a git command that can be translated either contains an
646# expected string, or does not contain an unwanted one. When running
647# under GETTEXT_POISON this pretends that the command produced expected
648# results.
649test_i18ngrep () {
650 if test -n "$GETTEXT_POISON"
651 then
652 : # pretend success
653 elif test "x!" = "x$1"
654 then
655 shift
656 ! grep "$@"
657 else
658 grep "$@"
659 fi
660}
661
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662# test whether the filesystem supports symbolic links
663ln -s x y 2>/dev/null && test -h y 2>/dev/null && test_set_prereq SYMLINKS
664rm -f y
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665
666# When the tests are run as root, permission tests will report that
667# things are writable when they shouldn't be.
668test -w / || test_set_prereq SANITY