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($0) - RSTART - RLENGTH + 1); 78 } 79 print 80 } 81 ' 82} 83 84nul_to_q () { 85 perl -pe 'y/\000/Q/' 86} 87 88q_to_nul () { 89 perl -pe 'y/Q/\000/' 90} 91 92q_to_cr () { 93 tr Q '\015' 94} 95 96q_to_tab () { 97 tr Q '\011' 98} 99 100qz_to_tab_space () { 101 tr QZ '\011\040' 102} 103 104append_cr () { 105 sed -e 's/$/Q/' | tr Q '\015' 106} 107 108remove_cr () { 109 tr '\015' Q | sed -e 's/Q$//' 110} 111 112# In some bourne shell implementations, the "unset" builtin returns 113# nonzero status when a variable to be unset was not set in the first 114# place. 115# 116# Use sane_unset when that should not be considered an error. 117 118sane_unset () { 119 unset "$@" 120 return 0 121} 122 123test_tick () { 124 if test -z "${test_tick+set}" 125 then 126 test_tick=1112911993 127 else 128 test_tick=$(($test_tick + 60)) 129 fi 130 GIT_COMMITTER_DATE="$test_tick -0700" 131 GIT_AUTHOR_DATE="$test_tick -0700" 132 export GIT_COMMITTER_DATE GIT_AUTHOR_DATE 133} 134 135# Stop execution and start a shell. This is useful for debugging tests and 136# only makes sense together with "-v". 137# 138# Be sure to remove all invocations of this command before submitting. 139 140test_pause () { 141 if test "$verbose" = t; then 142 "$SHELL_PATH" <&6 >&3 2>&4 143 else 144 error >&5 "test_pause requires --verbose" 145 fi 146} 147 148# Wrap git in gdb. Adding this to a command can make it easier to 149# understand what is going on in a failing test. 150# 151# Example: "debug git checkout master". 152debug () { 153 GIT_TEST_GDB=1 "$@" 154} 155 156# Call test_commit with the arguments "<message> [<file> [<contents> [<tag>]]]" 157# 158# This will commit a file with the given contents and the given commit 159# message, and tag the resulting commit with the given tag name. 160# 161# <file>, <contents>, and <tag> all default to <message>. 162 163test_commit () { 164 notick= && 165 signoff= && 166 while test $# != 0 167 do 168 case "$1" in 169 --notick) 170 notick=yes 171 ;; 172 --signoff) 173 signoff="$1" 174 ;; 175 *) 176 break 177 ;; 178 esac 179 shift 180 done && 181 file=${2:-"$1.t"} && 182 echo "${3-$1}" > "$file" && 183 git add "$file" && 184 if test -z "$notick" 185 then 186 test_tick 187 fi && 188 git commit $signoff -m "$1" && 189 git tag "${4:-$1}" 190} 191 192# Call test_merge with the arguments "<message> <commit>", where <commit> 193# can be a tag pointing to the commit-to-merge. 194 195test_merge () { 196 test_tick && 197 git merge -m "$1" "$2" && 198 git tag "$1" 199} 200 201# This function helps systems where core.filemode=false is set. 202# Use it instead of plain 'chmod +x' to set or unset the executable bit 203# of a file in the working directory and add it to the index. 204 205test_chmod () { 206 chmod "$@" && 207 git update-index --add "--chmod=$@" 208} 209 210# Unset a configuration variable, but don't fail if it doesn't exist. 211test_unconfig () { 212 config_dir= 213 if test "$1" = -C 214 then 215 shift 216 config_dir=$1 217 shift 218 fi 219 git ${config_dir:+-C "$config_dir"} config --unset-all "$@" 220 config_status=$? 221 case "$config_status" in 222 5) # ok, nothing to unset 223 config_status=0 224 ;; 225 esac 226 return $config_status 227} 228 229# Set git config, automatically unsetting it after the test is over. 230test_config () { 231 config_dir= 232 if test "$1" = -C 233 then 234 shift 235 config_dir=$1 236 shift 237 fi 238 test_when_finished "test_unconfig ${config_dir:+-C '$config_dir'} '$1'" && 239 git ${config_dir:+-C "$config_dir"} config "$@" 240} 241 242test_config_global () { 243 test_when_finished "test_unconfig --global '$1'" && 244 git config --global "$@" 245} 246 247write_script () { 248 { 249 echo "#!${2-"$SHELL_PATH"}" && 250 cat 251 } >"$1" && 252 chmod +x "$1" 253} 254 255# Use test_set_prereq to tell that a particular prerequisite is available. 256# The prerequisite can later be checked for in two ways: 257# 258# - Explicitly using test_have_prereq. 259# 260# - Implicitly by specifying the prerequisite tag in the calls to 261# test_expect_{success,failure,code}. 262# 263# The single parameter is the prerequisite tag (a simple word, in all 264# capital letters by convention). 265 266test_set_prereq () { 267 satisfied_prereq="$satisfied_prereq$1 " 268} 269satisfied_prereq=" " 270lazily_testable_prereq= lazily_tested_prereq= 271 272# Usage: test_lazy_prereq PREREQ 'script' 273test_lazy_prereq () { 274 lazily_testable_prereq="$lazily_testable_prereq$1 " 275 eval test_prereq_lazily_$1=\$2 276} 277 278test_run_lazy_prereq_ () { 279 script=' 280mkdir -p "$TRASH_DIRECTORY/prereq-test-dir" && 281( 282 cd "$TRASH_DIRECTORY/prereq-test-dir" &&'"$2"' 283)' 284 say >&3 "checking prerequisite: $1" 285 say >&3 "$script" 286 test_eval_ "$script" 287 eval_ret=$? 288 rm -rf "$TRASH_DIRECTORY/prereq-test-dir" 289 if test "$eval_ret" = 0; then 290 say >&3 "prerequisite $1 ok" 291 else 292 say >&3 "prerequisite $1 not satisfied" 293 fi 294 return $eval_ret 295} 296 297test_have_prereq () { 298 # prerequisites can be concatenated with ',' 299 save_IFS=$IFS 300 IFS=, 301 set -- $* 302 IFS=$save_IFS 303 304 total_prereq=0 305 ok_prereq=0 306 missing_prereq= 307 308 for prerequisite 309 do 310 case "$prerequisite" in 311 !*) 312 negative_prereq=t 313 prerequisite=${prerequisite#!} 314 ;; 315 *) 316 negative_prereq= 317 esac 318 319 case " $lazily_tested_prereq " in 320 *" $prerequisite "*) 321 ;; 322 *) 323 case " $lazily_testable_prereq " in 324 *" $prerequisite "*) 325 eval "script=\$test_prereq_lazily_$prerequisite" && 326 if test_run_lazy_prereq_ "$prerequisite" "$script" 327 then 328 test_set_prereq $prerequisite 329 fi 330 lazily_tested_prereq="$lazily_tested_prereq$prerequisite " 331 esac 332 ;; 333 esac 334 335 total_prereq=$(($total_prereq + 1)) 336 case "$satisfied_prereq" in 337 *" $prerequisite "*) 338 satisfied_this_prereq=t 339 ;; 340 *) 341 satisfied_this_prereq= 342 esac 343 344 case "$satisfied_this_prereq,$negative_prereq" in 345 t,|,t) 346 ok_prereq=$(($ok_prereq + 1)) 347 ;; 348 *) 349 # Keep a list of missing prerequisites; restore 350 # the negative marker if necessary. 351 prerequisite=${negative_prereq:+!}$prerequisite 352 if test -z "$missing_prereq" 353 then 354 missing_prereq=$prerequisite 355 else 356 missing_prereq="$prerequisite,$missing_prereq" 357 fi 358 esac 359 done 360 361 test $total_prereq = $ok_prereq 362} 363 364test_declared_prereq () { 365 case ",$test_prereq," in 366 *,$1,*) 367 return 0 368 ;; 369 esac 370 return 1 371} 372 373test_verify_prereq () { 374 test -z "$test_prereq" || 375 expr >/dev/null "$test_prereq" : '[A-Z0-9_,!]*$' || 376 error "bug in the test script: '$test_prereq' does not look like a prereq" 377} 378 379test_expect_failure () { 380 test_start_ 381 test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= 382 test "$#" = 2 || 383 error "bug in the test script: not 2 or 3 parameters to test-expect-failure" 384 test_verify_prereq 385 export test_prereq 386 if ! test_skip "$@" 387 then 388 say >&3 "checking known breakage: $2" 389 if test_run_ "$2" expecting_failure 390 then 391 test_known_broken_ok_ "$1" 392 else 393 test_known_broken_failure_ "$1" 394 fi 395 fi 396 test_finish_ 397} 398 399test_expect_success () { 400 test_start_ 401 test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= 402 test "$#" = 2 || 403 error "bug in the test script: not 2 or 3 parameters to test-expect-success" 404 test_verify_prereq 405 export test_prereq 406 if ! test_skip "$@" 407 then 408 say >&3 "expecting success: $2" 409 if test_run_ "$2" 410 then 411 test_ok_ "$1" 412 else 413 test_failure_ "$@" 414 fi 415 fi 416 test_finish_ 417} 418 419# test_external runs external test scripts that provide continuous 420# test output about their progress, and succeeds/fails on 421# zero/non-zero exit code. It outputs the test output on stdout even 422# in non-verbose mode, and announces the external script with "# run 423# <n>: ..." before running it. When providing relative paths, keep in 424# mind that all scripts run in "trash directory". 425# Usage: test_external description command arguments... 426# Example: test_external 'Perl API' perl ../path/to/test.pl 427test_external () { 428 test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq= 429 test "$#" = 3 || 430 error >&5 "bug in the test script: not 3 or 4 parameters to test_external" 431 descr="$1" 432 shift 433 test_verify_prereq 434 export test_prereq 435 if ! test_skip "$descr" "$@" 436 then 437 # Announce the script to reduce confusion about the 438 # test output that follows. 439 say_color "" "# run $test_count: $descr ($*)" 440 # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG 441 # to be able to use them in script 442 export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG 443 # Run command; redirect its stderr to &4 as in 444 # test_run_, but keep its stdout on our stdout even in 445 # non-verbose mode. 446 "$@" 2>&4 447 if test "$?" = 0 448 then 449 if test $test_external_has_tap -eq 0; then 450 test_ok_ "$descr" 451 else 452 say_color "" "# test_external test $descr was ok" 453 test_success=$(($test_success + 1)) 454 fi 455 else 456 if test $test_external_has_tap -eq 0; then 457 test_failure_ "$descr" "$@" 458 else 459 say_color error "# test_external test $descr failed: $@" 460 test_failure=$(($test_failure + 1)) 461 fi 462 fi 463 fi 464} 465 466# Like test_external, but in addition tests that the command generated 467# no output on stderr. 468test_external_without_stderr () { 469 # The temporary file has no (and must have no) security 470 # implications. 471 tmp=${TMPDIR:-/tmp} 472 stderr="$tmp/git-external-stderr.$$.tmp" 473 test_external "$@" 4> "$stderr" 474 test -f "$stderr" || error "Internal error: $stderr disappeared." 475 descr="no stderr: $1" 476 shift 477 say >&3 "# expecting no stderr from previous command" 478 if test ! -s "$stderr" 479 then 480 rm "$stderr" 481 482 if test $test_external_has_tap -eq 0; then 483 test_ok_ "$descr" 484 else 485 say_color "" "# test_external_without_stderr test $descr was ok" 486 test_success=$(($test_success + 1)) 487 fi 488 else 489 if test "$verbose" = t 490 then 491 output=$(echo; echo "# Stderr is:"; cat "$stderr") 492 else 493 output= 494 fi 495 # rm first in case test_failure exits. 496 rm "$stderr" 497 if test $test_external_has_tap -eq 0; then 498 test_failure_ "$descr" "$@" "$output" 499 else 500 say_color error "# test_external_without_stderr test $descr failed: $@: $output" 501 test_failure=$(($test_failure + 1)) 502 fi 503 fi 504} 505 506# debugging-friendly alternatives to "test [-f|-d|-e]" 507# The commands test the existence or non-existence of $1. $2 can be 508# given to provide a more precise diagnosis. 509test_path_is_file () { 510 if ! test -f "$1" 511 then 512 echo "File $1 doesn't exist. $2" 513 false 514 fi 515} 516 517test_path_is_dir () { 518 if ! test -d "$1" 519 then 520 echo "Directory $1 doesn't exist. $2" 521 false 522 fi 523} 524 525# Check if the directory exists and is empty as expected, barf otherwise. 526test_dir_is_empty () { 527 test_path_is_dir "$1" && 528 if test -n "$(ls -a1 "$1" | egrep -v '^\.\.?$')" 529 then 530 echo "Directory '$1' is not empty, it contains:" 531 ls -la "$1" 532 return 1 533 fi 534} 535 536test_path_is_missing () { 537 if test -e "$1" 538 then 539 echo "Path exists:" 540 ls -ld "$1" 541 if test $# -ge 1 542 then 543 echo "$*" 544 fi 545 false 546 fi 547} 548 549# test_line_count checks that a file has the number of lines it 550# ought to. For example: 551# 552# test_expect_success 'produce exactly one line of output' ' 553# do something >output && 554# test_line_count = 1 output 555# ' 556# 557# is like "test $(wc -l <output) = 1" except that it passes the 558# output through when the number of lines is wrong. 559 560test_line_count () { 561 if test $# != 3 562 then 563 error "bug in the test script: not 3 parameters to test_line_count" 564 elif ! test $(wc -l <"$3") "$1" "$2" 565 then 566 echo "test_line_count: line count for $3 !$1 $2" 567 cat "$3" 568 return 1 569 fi 570} 571 572# This is not among top-level (test_expect_success | test_expect_failure) 573# but is a prefix that can be used in the test script, like: 574# 575# test_expect_success 'complain and die' ' 576# do something && 577# do something else && 578# test_must_fail git checkout ../outerspace 579# ' 580# 581# Writing this as "! git checkout ../outerspace" is wrong, because 582# the failure could be due to a segv. We want a controlled failure. 583 584test_must_fail () { 585 "$@" 586 exit_code=$? 587 if test $exit_code = 0; then 588 echo >&2 "test_must_fail: command succeeded: $*" 589 return 1 590 elif test $exit_code -gt 129 && test $exit_code -le 192; then 591 echo >&2 "test_must_fail: died by signal: $*" 592 return 1 593 elif test $exit_code = 127; then 594 echo >&2 "test_must_fail: command not found: $*" 595 return 1 596 elif test $exit_code = 126; then 597 echo >&2 "test_must_fail: valgrind error: $*" 598 return 1 599 fi 600 return 0 601} 602 603# Similar to test_must_fail, but tolerates success, too. This is 604# meant to be used in contexts like: 605# 606# test_expect_success 'some command works without configuration' ' 607# test_might_fail git config --unset all.configuration && 608# do something 609# ' 610# 611# Writing "git config --unset all.configuration || :" would be wrong, 612# because we want to notice if it fails due to segv. 613 614test_might_fail () { 615 "$@" 616 exit_code=$? 617 if test $exit_code -gt 129 && test $exit_code -le 192; then 618 echo >&2 "test_might_fail: died by signal: $*" 619 return 1 620 elif test $exit_code = 127; then 621 echo >&2 "test_might_fail: command not found: $*" 622 return 1 623 fi 624 return 0 625} 626 627# Similar to test_must_fail and test_might_fail, but check that a 628# given command exited with a given exit code. Meant to be used as: 629# 630# test_expect_success 'Merge with d/f conflicts' ' 631# test_expect_code 1 git merge "merge msg" B master 632# ' 633 634test_expect_code () { 635 want_code=$1 636 shift 637 "$@" 638 exit_code=$? 639 if test $exit_code = $want_code 640 then 641 return 0 642 fi 643 644 echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*" 645 return 1 646} 647 648# test_cmp is a helper function to compare actual and expected output. 649# You can use it like: 650# 651# test_expect_success 'foo works' ' 652# echo expected >expected && 653# foo >actual && 654# test_cmp expected actual 655# ' 656# 657# This could be written as either "cmp" or "diff -u", but: 658# - cmp's output is not nearly as easy to read as diff -u 659# - not all diff versions understand "-u" 660 661test_cmp() { 662 $GIT_TEST_CMP "$@" 663} 664 665# test_cmp_bin - helper to compare binary files 666 667test_cmp_bin() { 668 cmp "$@" 669} 670 671# Call any command "$@" but be more verbose about its 672# failure. This is handy for commands like "test" which do 673# not output anything when they fail. 674verbose () { 675 "$@" && return 0 676 echo >&2 "command failed: $(git rev-parse --sq-quote "$@")" 677 return 1 678} 679 680# Check if the file expected to be empty is indeed empty, and barfs 681# otherwise. 682 683test_must_be_empty () { 684 if test -s "$1" 685 then 686 echo "'$1' is not empty, it contains:" 687 cat "$1" 688 return 1 689 fi 690} 691 692# Tests that its two parameters refer to the same revision 693test_cmp_rev () { 694 git rev-parse --verify "$1" >expect.rev && 695 git rev-parse --verify "$2" >actual.rev && 696 test_cmp expect.rev actual.rev 697} 698 699# Print a sequence of numbers or letters in increasing order. This is 700# similar to GNU seq(1), but the latter might not be available 701# everywhere (and does not do letters). It may be used like: 702# 703# for i in $(test_seq 100) 704# do 705# for j in $(test_seq 10 20) 706# do 707# for k in $(test_seq a z) 708# do 709# echo $i-$j-$k 710# done 711# done 712# done 713 714test_seq () { 715 case $# in 716 1) set 1 "$@" ;; 717 2) ;; 718 *) error "bug in the test script: not 1 or 2 parameters to test_seq" ;; 719 esac 720 perl -le 'print for $ARGV[0]..$ARGV[1]' -- "$@" 721} 722 723# This function can be used to schedule some commands to be run 724# unconditionally at the end of the test to restore sanity: 725# 726# test_expect_success 'test core.capslock' ' 727# git config core.capslock true && 728# test_when_finished "git config --unset core.capslock" && 729# hello world 730# ' 731# 732# That would be roughly equivalent to 733# 734# test_expect_success 'test core.capslock' ' 735# git config core.capslock true && 736# hello world 737# git config --unset core.capslock 738# ' 739# 740# except that the greeting and config --unset must both succeed for 741# the test to pass. 742# 743# Note that under --immediate mode, no clean-up is done to help diagnose 744# what went wrong. 745 746test_when_finished () { 747 # We cannot detect when we are in a subshell in general, but by 748 # doing so on Bash is better than nothing (the test will 749 # silently pass on other shells). 750 test "${BASH_SUBSHELL-0}" = 0 || 751 error "bug in test script: test_when_finished does nothing in a subshell" 752 test_cleanup="{ $* 753 } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup" 754} 755 756# Most tests can use the created repository, but some may need to create more. 757# Usage: test_create_repo <directory> 758test_create_repo () { 759 test "$#" = 1 || 760 error "bug in the test script: not 1 parameter to test-create-repo" 761 repo="$1" 762 mkdir -p "$repo" 763 ( 764 cd "$repo" || error "Cannot setup test environment" 765 "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 || 766 error "cannot run git init -- have you built things yet?" 767 mv .git/hooks .git/hooks-disabled 768 ) || exit 769} 770 771# This function helps on symlink challenged file systems when it is not 772# important that the file system entry is a symbolic link. 773# Use test_ln_s_add instead of "ln -s x y && git add y" to add a 774# symbolic link entry y to the index. 775 776test_ln_s_add () { 777 if test_have_prereq SYMLINKS 778 then 779 ln -s "$1" "$2" && 780 git update-index --add "$2" 781 else 782 printf '%s' "$1" >"$2" && 783 ln_s_obj=$(git hash-object -w "$2") && 784 git update-index --add --cacheinfo 120000 $ln_s_obj "$2" && 785 # pick up stat info from the file 786 git update-index "$2" 787 fi 788} 789 790# This function writes out its parameters, one per line 791test_write_lines () { 792 printf "%s\n" "$@" 793} 794 795perl () { 796 command "$PERL_PATH" "$@" 797} 798 799# Is the value one of the various ways to spell a boolean true/false? 800test_normalize_bool () { 801 git -c magic.variable="$1" config --bool magic.variable 2>/dev/null 802} 803 804# Given a variable $1, normalize the value of it to one of "true", 805# "false", or "auto" and store the result to it. 806# 807# test_tristate GIT_TEST_HTTPD 808# 809# A variable set to an empty string is set to 'false'. 810# A variable set to 'false' or 'auto' keeps its value. 811# Anything else is set to 'true'. 812# An unset variable defaults to 'auto'. 813# 814# The last rule is to allow people to set the variable to an empty 815# string and export it to decline testing the particular feature 816# for versions both before and after this change. We used to treat 817# both unset and empty variable as a signal for "do not test" and 818# took any non-empty string as "please test". 819 820test_tristate () { 821 if eval "test x\"\${$1+isset}\" = xisset" 822 then 823 # explicitly set 824 eval " 825 case \"\$$1\" in 826 '') $1=false ;; 827 auto) ;; 828 *) $1=\$(test_normalize_bool \$$1 || echo true) ;; 829 esac 830 " 831 else 832 eval "$1=auto" 833 fi 834} 835 836# Exit the test suite, either by skipping all remaining tests or by 837# exiting with an error. If "$1" is "auto", we then we assume we were 838# opportunistically trying to set up some tests and we skip. If it is 839# "true", then we report a failure. 840# 841# The error/skip message should be given by $2. 842# 843test_skip_or_die () { 844 case "$1" in 845 auto) 846 skip_all=$2 847 test_done 848 ;; 849 true) 850 error "$2" 851 ;; 852 *) 853 error "BUG: test tristate is '$1' (real error: $2)" 854 esac 855} 856 857# The following mingw_* functions obey POSIX shell syntax, but are actually 858# bash scripts, and are meant to be used only with bash on Windows. 859 860# A test_cmp function that treats LF and CRLF equal and avoids to fork 861# diff when possible. 862mingw_test_cmp () { 863 # Read text into shell variables and compare them. If the results 864 # are different, use regular diff to report the difference. 865 local test_cmp_a= test_cmp_b= 866 867 # When text came from stdin (one argument is '-') we must feed it 868 # to diff. 869 local stdin_for_diff= 870 871 # Since it is difficult to detect the difference between an 872 # empty input file and a failure to read the files, we go straight 873 # to diff if one of the inputs is empty. 874 if test -s "$1" && test -s "$2" 875 then 876 # regular case: both files non-empty 877 mingw_read_file_strip_cr_ test_cmp_a <"$1" 878 mingw_read_file_strip_cr_ test_cmp_b <"$2" 879 elif test -s "$1" && test "$2" = - 880 then 881 # read 2nd file from stdin 882 mingw_read_file_strip_cr_ test_cmp_a <"$1" 883 mingw_read_file_strip_cr_ test_cmp_b 884 stdin_for_diff='<<<"$test_cmp_b"' 885 elif test "$1" = - && test -s "$2" 886 then 887 # read 1st file from stdin 888 mingw_read_file_strip_cr_ test_cmp_a 889 mingw_read_file_strip_cr_ test_cmp_b <"$2" 890 stdin_for_diff='<<<"$test_cmp_a"' 891 fi 892 test -n "$test_cmp_a" && 893 test -n "$test_cmp_b" && 894 test "$test_cmp_a" = "$test_cmp_b" || 895 eval "diff -u \"\$@\" $stdin_for_diff" 896} 897 898# $1 is the name of the shell variable to fill in 899mingw_read_file_strip_cr_ () { 900 # Read line-wise using LF as the line separator 901 # and use IFS to strip CR. 902 local line 903 while : 904 do 905 if IFS=$'\r' read -r -d $'\n' line 906 then 907 # good 908 line=$line$'\n' 909 else 910 # we get here at EOF, but also if the last line 911 # was not terminated by LF; in the latter case, 912 # some text was read 913 if test -z "$line" 914 then 915 # EOF, really 916 break 917 fi 918 fi 919 eval "$1=\$$1\$line" 920 done 921}