1# Library of functions shared by all tests scripts, included by 2# test-lib.sh. 3# 4# Copyright (c) 2005 Junio C Hamano 5# 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. 10# 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. 15# 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/ . 18 19# The semantics of the editor variables are that of invoking 20# sh -c "$EDITOR \"$@\"" files ... 21# 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. 25# 26# In particular, quoting isn't enough, as the path may contain the same quote 27# that we're using. 28test_set_editor () { 29 FAKE_EDITOR="$1" 30 export FAKE_EDITOR 31 EDITOR='"$FAKE_EDITOR"' 32 export EDITOR 33} 34 35test_set_index_version () { 36 GIT_INDEX_VERSION="$1" 37 export GIT_INDEX_VERSION 38} 39 40test_decode_color () { 41 awk ' 42 function name(n) { 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"; 61 } 62 { 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) 67 printf "%s", name(0) 68 else { 69 n = split(codes, ary, ";"); 70 sep = ""; 71 for (i = 1; i <= n; i++) { 72 printf "%s%s", sep, name(ary[i]); 73 sep = ";" 74 } 75 } 76 printf ">"; 77 $0 = substr($0, RSTART + RLENGTH, length($0) - RSTART - RLENGTH + 1); 78 } 79 print 80 } 81 ' 82} 83 84lf_to_nul () { 85 perl -pe 'y/\012/\000/' 86} 87 88nul_to_q () { 89 perl -pe 'y/\000/Q/' 90} 91 92q_to_nul () { 93 perl -pe 'y/Q/\000/' 94} 95 96q_to_cr () { 97 tr Q '\015' 98} 99 100q_to_tab () { 101 tr Q '\011' 102} 103 104qz_to_tab_space () { 105 tr QZ '\011\040' 106} 107 108append_cr () { 109 sed -e 's/$/Q/' | tr Q '\015' 110} 111 112remove_cr () { 113 tr '\015' Q | sed -e 's/Q$//' 114} 115 116# In some bourne shell implementations, the "unset" builtin returns 117# nonzero status when a variable to be unset was not set in the first 118# place. 119# 120# Use sane_unset when that should not be considered an error. 121 122sane_unset () { 123 unset "$@" 124 return 0 125} 126 127test_tick () { 128 if test -z "${test_tick+set}" 129 then 130 test_tick=1112911993 131 else 132 test_tick=$(($test_tick + 60)) 133 fi 134 GIT_COMMITTER_DATE="$test_tick -0700" 135 GIT_AUTHOR_DATE="$test_tick -0700" 136 export GIT_COMMITTER_DATE GIT_AUTHOR_DATE 137} 138 139# Stop execution and start a shell. This is useful for debugging tests and 140# only makes sense together with "-v". 141# 142# Be sure to remove all invocations of this command before submitting. 143 144test_pause () { 145 if test "$verbose" = t; then 146 "$SHELL_PATH" <&6 >&3 2>&4 147 else 148 error >&5 "test_pause requires --verbose" 149 fi 150} 151 152# Wrap git in gdb. Adding this to a command can make it easier to 153# understand what is going on in a failing test. 154# 155# Example: "debug git checkout master". 156debug () { 157 GIT_TEST_GDB=1 "$@" 158} 159 160# Call test_commit with the arguments "<message> [<file> [<contents> [<tag>]]]" 161# 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. 164# 165# <file>, <contents>, and <tag> all default to <message>. 166 167test_commit () { 168 notick= && 169 signoff= && 170 while test $# != 0 171 do 172 case "$1" in 173 --notick) 174 notick=yes 175 ;; 176 --signoff) 177 signoff="$1" 178 ;; 179 *) 180 break 181 ;; 182 esac 183 shift 184 done && 185 file=${2:-"$1.t"} && 186 echo "${3-$1}" > "$file" && 187 git add "$file" && 188 if test -z "$notick" 189 then 190 test_tick 191 fi && 192 git commit $signoff -m "$1" && 193 git tag "${4:-$1}" 194} 195 196# Call test_merge with the arguments "<message> <commit>", where <commit> 197# can be a tag pointing to the commit-to-merge. 198 199test_merge () { 200 test_tick && 201 git merge -m "$1" "$2" && 202 git tag "$1" 203} 204 205# This function helps systems where core.filemode=false is set. 206# Use it instead of plain 'chmod +x' to set or unset the executable bit 207# of a file in the working directory and add it to the index. 208 209test_chmod () { 210 chmod "$@" && 211 git update-index --add "--chmod=$@" 212} 213 214# Unset a configuration variable, but don't fail if it doesn't exist. 215test_unconfig () { 216 config_dir= 217 if test "$1" = -C 218 then 219 shift 220 config_dir=$1 221 shift 222 fi 223 git ${config_dir:+-C "$config_dir"} config --unset-all "$@" 224 config_status=$? 225 case "$config_status" in 226 5) # ok, nothing to unset 227 config_status=0 228 ;; 229 esac 230 return $config_status 231} 232 233# Set git config, automatically unsetting it after the test is over. 234test_config () { 235 config_dir= 236 if test "$1" = -C 237 then 238 shift 239 config_dir=$1 240 shift 241 fi 242 test_when_finished "test_unconfig ${config_dir:+-C '$config_dir'} '$1'" && 243 git ${config_dir:+-C "$config_dir"} config "$@" 244} 245 246test_config_global () { 247 test_when_finished "test_unconfig --global '$1'" && 248 git config --global "$@" 249} 250 251write_script () { 252 { 253 echo "#!${2-"$SHELL_PATH"}" && 254 cat 255 } >"$1" && 256 chmod +x "$1" 257} 258 259# Use test_set_prereq to tell that a particular prerequisite is available. 260# The prerequisite can later be checked for in two ways: 261# 262# - Explicitly using test_have_prereq. 263# 264# - Implicitly by specifying the prerequisite tag in the calls to 265# test_expect_{success,failure,code}. 266# 267# The single parameter is the prerequisite tag (a simple word, in all 268# capital letters by convention). 269 270test_set_prereq () { 271 satisfied_prereq="$satisfied_prereq$1 " 272} 273satisfied_prereq=" " 274lazily_testable_prereq= lazily_tested_prereq= 275 276# Usage: test_lazy_prereq PREREQ 'script' 277test_lazy_prereq () { 278 lazily_testable_prereq="$lazily_testable_prereq$1 " 279 eval test_prereq_lazily_$1=\$2 280} 281 282test_run_lazy_prereq_ () { 283 script=' 284mkdir -p "$TRASH_DIRECTORY/prereq-test-dir" && 285( 286 cd "$TRASH_DIRECTORY/prereq-test-dir" &&'"$2"' 287)' 288 say >&3 "checking prerequisite: $1" 289 say >&3 "$script" 290 test_eval_ "$script" 291 eval_ret=$? 292 rm -rf "$TRASH_DIRECTORY/prereq-test-dir" 293 if test "$eval_ret" = 0; then 294 say >&3 "prerequisite $1 ok" 295 else 296 say >&3 "prerequisite $1 not satisfied" 297 fi 298 return $eval_ret 299} 300 301test_have_prereq () { 302 # prerequisites can be concatenated with ',' 303 save_IFS=$IFS 304 IFS=, 305 set -- $* 306 IFS=$save_IFS 307 308 total_prereq=0 309 ok_prereq=0 310 missing_prereq= 311 312 for prerequisite 313 do 314 case "$prerequisite" in 315 !*) 316 negative_prereq=t 317 prerequisite=${prerequisite#!} 318 ;; 319 *) 320 negative_prereq= 321 esac 322 323 case " $lazily_tested_prereq " in 324 *" $prerequisite "*) 325 ;; 326 *) 327 case " $lazily_testable_prereq " in 328 *" $prerequisite "*) 329 eval "script=\$test_prereq_lazily_$prerequisite" && 330 if test_run_lazy_prereq_ "$prerequisite" "$script" 331 then 332 test_set_prereq $prerequisite 333 fi 334 lazily_tested_prereq="$lazily_tested_prereq$prerequisite " 335 esac 336 ;; 337 esac 338 339 total_prereq=$(($total_prereq + 1)) 340 case "$satisfied_prereq" in 341 *" $prerequisite "*) 342 satisfied_this_prereq=t 343 ;; 344 *) 345 satisfied_this_prereq= 346 esac 347 348 case "$satisfied_this_prereq,$negative_prereq" in 349 t,|,t) 350 ok_prereq=$(($ok_prereq + 1)) 351 ;; 352 *) 353 # Keep a list of missing prerequisites; restore 354 # the negative marker if necessary. 355 prerequisite=${negative_prereq:+!}$prerequisite 356 if test -z "$missing_prereq" 357 then 358 missing_prereq=$prerequisite 359 else 360 missing_prereq="$prerequisite,$missing_prereq" 361 fi 362 esac 363 done 364 365 test $total_prereq = $ok_prereq 366} 367 368test_declared_prereq () { 369 case ",$test_prereq," in 370 *,$1,*) 371 return 0 372 ;; 373 esac 374 return 1 375} 376 377test_verify_prereq () { 378 test -z "$test_prereq" || 379 expr >/dev/null "$test_prereq" : '[A-Z0-9_,!]*$' || 380 error "bug in the test script: '$test_prereq' does not look like a prereq" 381} 382 383test_expect_failure () { 384 test_start_ 385 test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= 386 test "$#" = 2 || 387 error "bug in the test script: not 2 or 3 parameters to test-expect-failure" 388 test_verify_prereq 389 export test_prereq 390 if ! test_skip "$@" 391 then 392 say >&3 "checking known breakage: $2" 393 if test_run_ "$2" expecting_failure 394 then 395 test_known_broken_ok_ "$1" 396 else 397 test_known_broken_failure_ "$1" 398 fi 399 fi 400 test_finish_ 401} 402 403test_expect_success () { 404 test_start_ 405 test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= 406 test "$#" = 2 || 407 error "bug in the test script: not 2 or 3 parameters to test-expect-success" 408 test_verify_prereq 409 export test_prereq 410 if ! test_skip "$@" 411 then 412 say >&3 "expecting success: $2" 413 if test_run_ "$2" 414 then 415 test_ok_ "$1" 416 else 417 test_failure_ "$@" 418 fi 419 fi 420 test_finish_ 421} 422 423# 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 431test_external () { 432 test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq= 433 test "$#" = 3 || 434 error >&5 "bug in the test script: not 3 or 4 parameters to test_external" 435 descr="$1" 436 shift 437 test_verify_prereq 438 export test_prereq 439 if ! test_skip "$descr" "$@" 440 then 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 449 # non-verbose mode. 450 "$@" 2>&4 451 if test "$?" = 0 452 then 453 if test $test_external_has_tap -eq 0; then 454 test_ok_ "$descr" 455 else 456 say_color "" "# test_external test $descr was ok" 457 test_success=$(($test_success + 1)) 458 fi 459 else 460 if test $test_external_has_tap -eq 0; then 461 test_failure_ "$descr" "$@" 462 else 463 say_color error "# test_external test $descr failed: $@" 464 test_failure=$(($test_failure + 1)) 465 fi 466 fi 467 fi 468} 469 470# Like test_external, but in addition tests that the command generated 471# no output on stderr. 472test_external_without_stderr () { 473 # The temporary file has no (and must have no) security 474 # implications. 475 tmp=${TMPDIR:-/tmp} 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: $1" 480 shift 481 say >&3 "# expecting no stderr from previous command" 482 if test ! -s "$stderr" 483 then 484 rm "$stderr" 485 486 if test $test_external_has_tap -eq 0; then 487 test_ok_ "$descr" 488 else 489 say_color "" "# test_external_without_stderr test $descr was ok" 490 test_success=$(($test_success + 1)) 491 fi 492 else 493 if test "$verbose" = t 494 then 495 output=$(echo; echo "# Stderr is:"; cat "$stderr") 496 else 497 output= 498 fi 499 # rm first in case test_failure exits. 500 rm "$stderr" 501 if test $test_external_has_tap -eq 0; then 502 test_failure_ "$descr" "$@" "$output" 503 else 504 say_color error "# test_external_without_stderr test $descr failed: $@: $output" 505 test_failure=$(($test_failure + 1)) 506 fi 507 fi 508} 509 510# 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. 513test_path_is_file () { 514 if ! test -f "$1" 515 then 516 echo "File $1 doesn't exist. $2" 517 false 518 fi 519} 520 521test_path_is_dir () { 522 if ! test -d "$1" 523 then 524 echo "Directory $1 doesn't exist. $2" 525 false 526 fi 527} 528 529# Check if the directory exists and is empty as expected, barf otherwise. 530test_dir_is_empty () { 531 test_path_is_dir "$1" && 532 if test -n "$(ls -a1 "$1" | egrep -v '^\.\.?$')" 533 then 534 echo "Directory '$1' is not empty, it contains:" 535 ls -la "$1" 536 return 1 537 fi 538} 539 540test_path_is_missing () { 541 if test -e "$1" 542 then 543 echo "Path exists:" 544 ls -ld "$1" 545 if test $# -ge 1 546 then 547 echo "$*" 548 fi 549 false 550 fi 551} 552 553# test_line_count checks that a file has the number of lines it 554# ought to. For example: 555# 556# test_expect_success 'produce exactly one line of output' ' 557# do something >output && 558# test_line_count = 1 output 559# ' 560# 561# is like "test $(wc -l <output) = 1" except that it passes the 562# output through when the number of lines is wrong. 563 564test_line_count () { 565 if test $# != 3 566 then 567 error "bug in the test script: not 3 parameters to test_line_count" 568 elif ! test $(wc -l <"$3") "$1" "$2" 569 then 570 echo "test_line_count: line count for $3 !$1 $2" 571 cat "$3" 572 return 1 573 fi 574} 575 576# Returns success if a comma separated string of keywords ($1) contains a 577# given keyword ($2). 578# Examples: 579# `list_contains "foo,bar" bar` returns 0 580# `list_contains "foo" bar` returns 1 581 582list_contains () { 583 case ",$1," in 584 *,$2,*) 585 return 0 586 ;; 587 esac 588 return 1 589} 590 591# 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: 593# 594# test_expect_success 'complain and die' ' 595# do something && 596# do something else && 597# test_must_fail git checkout ../outerspace 598# ' 599# 600# Writing this as "! git checkout ../outerspace" is wrong, because 601# the failure could be due to a segv. We want a controlled failure. 602 603test_must_fail () { 604 case "$1" in 605 ok=*) 606 _test_ok=${1#ok=} 607 shift 608 ;; 609 *) 610 _test_ok= 611 ;; 612 esac 613 "$@" 614 exit_code=$? 615 if test $exit_code -eq 0 && ! list_contains "$_test_ok" success 616 then 617 echo >&2 "test_must_fail: command succeeded: $*" 618 return 1 619 elif test_match_signal 13 $exit_code && list_contains "$_test_ok" sigpipe 620 then 621 return 0 622 elif test $exit_code -gt 129 && test $exit_code -le 192 623 then 624 echo >&2 "test_must_fail: died by signal $(($exit_code - 128)): $*" 625 return 1 626 elif test $exit_code -eq 127 627 then 628 echo >&2 "test_must_fail: command not found: $*" 629 return 1 630 elif test $exit_code -eq 126 631 then 632 echo >&2 "test_must_fail: valgrind error: $*" 633 return 1 634 fi 635 return 0 636} 637 638# Similar to test_must_fail, but tolerates success, too. This is 639# meant to be used in contexts like: 640# 641# test_expect_success 'some command works without configuration' ' 642# test_might_fail git config --unset all.configuration && 643# do something 644# ' 645# 646# Writing "git config --unset all.configuration || :" would be wrong, 647# because we want to notice if it fails due to segv. 648 649test_might_fail () { 650 test_must_fail ok=success "$@" 651} 652 653# 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: 655# 656# test_expect_success 'Merge with d/f conflicts' ' 657# test_expect_code 1 git merge "merge msg" B master 658# ' 659 660test_expect_code () { 661 want_code=$1 662 shift 663 "$@" 664 exit_code=$? 665 if test $exit_code = $want_code 666 then 667 return 0 668 fi 669 670 echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*" 671 return 1 672} 673 674# test_cmp is a helper function to compare actual and expected output. 675# You can use it like: 676# 677# test_expect_success 'foo works' ' 678# echo expected >expected && 679# foo >actual && 680# test_cmp expected actual 681# ' 682# 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" 686 687test_cmp() { 688 $GIT_TEST_CMP "$@" 689} 690 691# test_cmp_bin - helper to compare binary files 692 693test_cmp_bin() { 694 cmp "$@" 695} 696 697# Call any command "$@" but be more verbose about its 698# failure. This is handy for commands like "test" which do 699# not output anything when they fail. 700verbose () { 701 "$@" && return 0 702 echo >&2 "command failed: $(git rev-parse --sq-quote "$@")" 703 return 1 704} 705 706# Check if the file expected to be empty is indeed empty, and barfs 707# otherwise. 708 709test_must_be_empty () { 710 if test -s "$1" 711 then 712 echo "'$1' is not empty, it contains:" 713 cat "$1" 714 return 1 715 fi 716} 717 718# Tests that its two parameters refer to the same revision 719test_cmp_rev () { 720 git rev-parse --verify "$1" >expect.rev && 721 git rev-parse --verify "$2" >actual.rev && 722 test_cmp expect.rev actual.rev 723} 724 725# Print a sequence of integers in increasing order, either with 726# two arguments (start and end): 727# 728# test_seq 1 5 -- outputs 1 2 3 4 5 one line at a time 729# 730# or with one argument (end), in which case it starts counting 731# from 1. 732 733test_seq () { 734 case $# in 735 1) set 1 "$@" ;; 736 2) ;; 737 *) error "bug in the test script: not 1 or 2 parameters to test_seq" ;; 738 esac 739 test_seq_counter__=$1 740 while test "$test_seq_counter__" -le "$2" 741 do 742 echo "$test_seq_counter__" 743 test_seq_counter__=$(( $test_seq_counter__ + 1 )) 744 done 745} 746 747# This function can be used to schedule some commands to be run 748# unconditionally at the end of the test to restore sanity: 749# 750# test_expect_success 'test core.capslock' ' 751# git config core.capslock true && 752# test_when_finished "git config --unset core.capslock" && 753# hello world 754# ' 755# 756# That would be roughly equivalent to 757# 758# test_expect_success 'test core.capslock' ' 759# git config core.capslock true && 760# hello world 761# git config --unset core.capslock 762# ' 763# 764# except that the greeting and config --unset must both succeed for 765# the test to pass. 766# 767# Note that under --immediate mode, no clean-up is done to help diagnose 768# what went wrong. 769 770test_when_finished () { 771 # We cannot detect when we are in a subshell in general, but by 772 # doing so on Bash is better than nothing (the test will 773 # silently pass on other shells). 774 test "${BASH_SUBSHELL-0}" = 0 || 775 error "bug in test script: test_when_finished does nothing in a subshell" 776 test_cleanup="{ $* 777 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup" 778} 779 780# Most tests can use the created repository, but some may need to create more. 781# Usage: test_create_repo <directory> 782test_create_repo () { 783 test "$#" = 1 || 784 error "bug in the test script: not 1 parameter to test-create-repo" 785 repo="$1" 786 mkdir -p "$repo" 787 ( 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 792 ) || exit 793} 794 795# 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. 799 800test_ln_s_add () { 801 if test_have_prereq SYMLINKS 802 then 803 ln -s "$1" "$2" && 804 git update-index --add "$2" 805 else 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 "$2" 811 fi 812} 813 814# This function writes out its parameters, one per line 815test_write_lines () { 816 printf "%s\n" "$@" 817} 818 819perl () { 820 command "$PERL_PATH" "$@" 821} 822 823# Is the value one of the various ways to spell a boolean true/false? 824test_normalize_bool () { 825 git -c magic.variable="$1" config --bool magic.variable 2>/dev/null 826} 827 828# Given a variable $1, normalize the value of it to one of "true", 829# "false", or "auto" and store the result to it. 830# 831# test_tristate GIT_TEST_HTTPD 832# 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'. 837# 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". 843 844test_tristate () { 845 if eval "test x\"\${$1+isset}\" = xisset" 846 then 847 # explicitly set 848 eval " 849 case \"\$$1\" in 850 '') $1=false ;; 851 auto) ;; 852 *) $1=\$(test_normalize_bool \$$1 || echo true) ;; 853 esac 854 " 855 else 856 eval "$1=auto" 857 fi 858} 859 860# 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. 864# 865# The error/skip message should be given by $2. 866# 867test_skip_or_die () { 868 case "$1" in 869 auto) 870 skip_all=$2 871 test_done 872 ;; 873 true) 874 error "$2" 875 ;; 876 *) 877 error "BUG: test tristate is '$1' (real error: $2)" 878 esac 879} 880 881# 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. 883 884# A test_cmp function that treats LF and CRLF equal and avoids to fork 885# diff when possible. 886mingw_test_cmp () { 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= 890 891 # When text came from stdin (one argument is '-') we must feed it 892 # to diff. 893 local stdin_for_diff= 894 895 # 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" 899 then 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" = - 904 then 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" 910 then 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"' 915 fi 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" 920} 921 922# $1 is the name of the shell variable to fill in 923mingw_read_file_strip_cr_ () { 924 # Read line-wise using LF as the line separator 925 # and use IFS to strip CR. 926 local line 927 while : 928 do 929 if IFS=$'\r' read -r -d $'\n' line 930 then 931 # good 932 line=$line$'\n' 933 else 934 # we get here at EOF, but also if the last line 935 # was not terminated by LF; in the latter case, 936 # some text was read 937 if test -z "$line" 938 then 939 # EOF, really 940 break 941 fi 942 fi 943 eval "$1=\$$1\$line" 944 done 945} 946 947# 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). 950test_env () { 951 ( 952 while test $# -gt 0 953 do 954 case "$1" in 955 *=*) 956 eval "${1%%=*}=\${1#*=}" 957 eval "export ${1%%=*}" 958 shift 959 ;; 960 *) 961 "$@" 962 exit 963 ;; 964 esac 965 done 966 ) 967} 968 969# Returns true if the numeric exit code in "$2" represents the expected signal 970# in "$1". Signals should be given numerically. 971test_match_signal () { 972 if test "$2" = "$((128 + $1))" 973 then 974 # POSIX 975 return 0 976 elif test "$2" = "$((256 + $1))" 977 then 978 # ksh 979 return 0 980 fi 981 return 1 982} 983 984# Read up to "$1" bytes (or to EOF) from stdin and write them to stdout. 985test_copy_bytes () { 986 perl -e ' 987 my $len = $ARGV[1]; 988 while ($len > 0) { 989 my $s; 990 my $nread = sysread(STDIN, $s, $len); 991 die "cannot read: $!" unless defined($nread); 992 print $s; 993 $len -= $nread; 994 } 995 ' - "$1" 996}