# Library of functions shared by all tests scripts, included by # test-lib.sh. # # Copyright (c) 2005 Junio C Hamano # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see http://www.gnu.org/licenses/ . # The semantics of the editor variables are that of invoking # sh -c "$EDITOR \"$@\"" files ... # # If our trash directory contains shell metacharacters, they will be # interpreted if we just set $EDITOR directly, so do a little dance with # environment variables to work around this. # # In particular, quoting isn't enough, as the path may contain the same quote # that we're using. test_set_editor () { FAKE_EDITOR="$1" export FAKE_EDITOR EDITOR='"$FAKE_EDITOR"' export EDITOR } test_set_index_version () { GIT_INDEX_VERSION="$1" export GIT_INDEX_VERSION } test_decode_color () { awk ' function name(n) { if (n == 0) return "RESET"; if (n == 1) return "BOLD"; if (n == 30) return "BLACK"; if (n == 31) return "RED"; if (n == 32) return "GREEN"; if (n == 33) return "YELLOW"; if (n == 34) return "BLUE"; if (n == 35) return "MAGENTA"; if (n == 36) return "CYAN"; if (n == 37) return "WHITE"; if (n == 40) return "BLACK"; if (n == 41) return "BRED"; if (n == 42) return "BGREEN"; if (n == 43) return "BYELLOW"; if (n == 44) return "BBLUE"; if (n == 45) return "BMAGENTA"; if (n == 46) return "BCYAN"; if (n == 47) return "BWHITE"; } { while (match($0, /\033\[[0-9;]*m/) != 0) { printf "%s<", substr($0, 1, RSTART-1); codes = substr($0, RSTART+2, RLENGTH-3); if (length(codes) == 0) printf "%s", name(0) else { n = split(codes, ary, ";"); sep = ""; for (i = 1; i <= n; i++) { printf "%s%s", sep, name(ary[i]); sep = ";" } } printf ">"; $0 = substr($0, RSTART + RLENGTH, length($0) - RSTART - RLENGTH + 1); } print } ' } nul_to_q () { perl -pe 'y/\000/Q/' } q_to_nul () { perl -pe 'y/Q/\000/' } q_to_cr () { tr Q '\015' } q_to_tab () { tr Q '\011' } qz_to_tab_space () { tr QZ '\011\040' } append_cr () { sed -e 's/$/Q/' | tr Q '\015' } remove_cr () { tr '\015' Q | sed -e 's/Q$//' } # In some bourne shell implementations, the "unset" builtin returns # nonzero status when a variable to be unset was not set in the first # place. # # Use sane_unset when that should not be considered an error. sane_unset () { unset "$@" return 0 } test_tick () { if test -z "${test_tick+set}" then test_tick=1112911993 else test_tick=$(($test_tick + 60)) fi GIT_COMMITTER_DATE="$test_tick -0700" GIT_AUTHOR_DATE="$test_tick -0700" export GIT_COMMITTER_DATE GIT_AUTHOR_DATE } # Stop execution and start a shell. This is useful for debugging tests and # only makes sense together with "-v". # # Be sure to remove all invocations of this command before submitting. test_pause () { if test "$verbose" = t; then "$SHELL_PATH" <&6 >&3 2>&4 else error >&5 "test_pause requires --verbose" fi } # Call test_commit with the arguments "<message> [<file> [<contents> [<tag>]]]" # # This will commit a file with the given contents and the given commit # message, and tag the resulting commit with the given tag name. # # <file>, <contents>, and <tag> all default to <message>. test_commit () { notick= && signoff= && while test $# != 0 do case "$1" in --notick) notick=yes ;; --signoff) signoff="$1" ;; *) break ;; esac shift done && file=${2:-"$1.t"} && echo "${3-$1}" > "$file" && git add "$file" && if test -z "$notick" then test_tick fi && git commit $signoff -m "$1" && git tag "${4:-$1}" } # Call test_merge with the arguments "<message> <commit>", where <commit> # can be a tag pointing to the commit-to-merge. test_merge () { test_tick && git merge -m "$1" "$2" && git tag "$1" } # This function helps systems where core.filemode=false is set. # Use it instead of plain 'chmod +x' to set or unset the executable bit # of a file in the working directory and add it to the index. test_chmod () { chmod "$@" && git update-index --add "--chmod=$@" } # Unset a configuration variable, but don't fail if it doesn't exist. test_unconfig () { git config --unset-all "$@" config_status=$? case "$config_status" in 5) # ok, nothing to unset config_status=0 ;; esac return $config_status } # Set git config, automatically unsetting it after the test is over. test_config () { test_when_finished "test_unconfig '$1'" && git config "$@" } test_config_global () { test_when_finished "test_unconfig --global '$1'" && git config --global "$@" } write_script () { { echo "#!${2-"$SHELL_PATH"}" && cat } >"$1" && chmod +x "$1" } # Use test_set_prereq to tell that a particular prerequisite is available. # The prerequisite can later be checked for in two ways: # # - Explicitly using test_have_prereq. # # - Implicitly by specifying the prerequisite tag in the calls to # test_expect_{success,failure,code}. # # The single parameter is the prerequisite tag (a simple word, in all # capital letters by convention). test_set_prereq () { satisfied_prereq="$satisfied_prereq$1 " } satisfied_prereq=" " lazily_testable_prereq= lazily_tested_prereq= # Usage: test_lazy_prereq PREREQ 'script' test_lazy_prereq () { lazily_testable_prereq="$lazily_testable_prereq$1 " eval test_prereq_lazily_$1=\$2 } test_run_lazy_prereq_ () { script=' mkdir -p "$TRASH_DIRECTORY/prereq-test-dir" && ( cd "$TRASH_DIRECTORY/prereq-test-dir" &&'"$2"' )' say >&3 "checking prerequisite: $1" say >&3 "$script" test_eval_ "$script" eval_ret=$? rm -rf "$TRASH_DIRECTORY/prereq-test-dir" if test "$eval_ret" = 0; then say >&3 "prerequisite $1 ok" else say >&3 "prerequisite $1 not satisfied" fi return $eval_ret } test_have_prereq () { # prerequisites can be concatenated with ',' save_IFS=$IFS IFS=, set -- $* IFS=$save_IFS total_prereq=0 ok_prereq=0 missing_prereq= for prerequisite do case "$prerequisite" in !*) negative_prereq=t prerequisite=${prerequisite#!} ;; *) negative_prereq= esac case " $lazily_tested_prereq " in *" $prerequisite "*) ;; *) case " $lazily_testable_prereq " in *" $prerequisite "*) eval "script=\$test_prereq_lazily_$prerequisite" && if test_run_lazy_prereq_ "$prerequisite" "$script" then test_set_prereq $prerequisite fi lazily_tested_prereq="$lazily_tested_prereq$prerequisite " esac ;; esac total_prereq=$(($total_prereq + 1)) case "$satisfied_prereq" in *" $prerequisite "*) satisfied_this_prereq=t ;; *) satisfied_this_prereq= esac case "$satisfied_this_prereq,$negative_prereq" in t,|,t) ok_prereq=$(($ok_prereq + 1)) ;; *) # Keep a list of missing prerequisites; restore # the negative marker if necessary. prerequisite=${negative_prereq:+!}$prerequisite if test -z "$missing_prereq" then missing_prereq=$prerequisite else missing_prereq="$prerequisite,$missing_prereq" fi esac done test $total_prereq = $ok_prereq } test_declared_prereq () { case ",$test_prereq," in *,$1,*) return 0 ;; esac return 1 } test_verify_prereq () { test -z "$test_prereq" || expr >/dev/null "$test_prereq" : '[A-Z0-9_,!]*$' || error "bug in the test script: '$test_prereq' does not look like a prereq" } test_expect_failure () { test_start_ test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= test "$#" = 2 || error "bug in the test script: not 2 or 3 parameters to test-expect-failure" test_verify_prereq export test_prereq if ! test_skip "$@" then say >&3 "checking known breakage: $2" if test_run_ "$2" expecting_failure then test_known_broken_ok_ "$1" else test_known_broken_failure_ "$1" fi fi test_finish_ } test_expect_success () { test_start_ test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= test "$#" = 2 || error "bug in the test script: not 2 or 3 parameters to test-expect-success" test_verify_prereq export test_prereq if ! test_skip "$@" then say >&3 "expecting success: $2" if test_run_ "$2" then test_ok_ "$1" else test_failure_ "$@" fi fi test_finish_ } # test_external runs external test scripts that provide continuous # test output about their progress, and succeeds/fails on # zero/non-zero exit code. It outputs the test output on stdout even # in non-verbose mode, and announces the external script with "# run # <n>: ..." before running it. When providing relative paths, keep in # mind that all scripts run in "trash directory". # Usage: test_external description command arguments... # Example: test_external 'Perl API' perl ../path/to/test.pl test_external () { test "$#" = 4 && { test_prereq=$1; shift; } || test_prereq= test "$#" = 3 || error >&5 "bug in the test script: not 3 or 4 parameters to test_external" descr="$1" shift test_verify_prereq export test_prereq if ! test_skip "$descr" "$@" then # Announce the script to reduce confusion about the # test output that follows. say_color "" "# run $test_count: $descr ($*)" # Export TEST_DIRECTORY, TRASH_DIRECTORY and GIT_TEST_LONG # to be able to use them in script export TEST_DIRECTORY TRASH_DIRECTORY GIT_TEST_LONG # Run command; redirect its stderr to &4 as in # test_run_, but keep its stdout on our stdout even in # non-verbose mode. "$@" 2>&4 if test "$?" = 0 then if test $test_external_has_tap -eq 0; then test_ok_ "$descr" else say_color "" "# test_external test $descr was ok" test_success=$(($test_success + 1)) fi else if test $test_external_has_tap -eq 0; then test_failure_ "$descr" "$@" else say_color error "# test_external test $descr failed: $@" test_failure=$(($test_failure + 1)) fi fi fi } # Like test_external, but in addition tests that the command generated # no output on stderr. test_external_without_stderr () { # The temporary file has no (and must have no) security # implications. tmp=${TMPDIR:-/tmp} stderr="$tmp/git-external-stderr.$$.tmp" test_external "$@" 4> "$stderr" test -f "$stderr" || error "Internal error: $stderr disappeared." descr="no stderr: $1" shift say >&3 "# expecting no stderr from previous command" if test ! -s "$stderr" then rm "$stderr" if test $test_external_has_tap -eq 0; then test_ok_ "$descr" else say_color "" "# test_external_without_stderr test $descr was ok" test_success=$(($test_success + 1)) fi else if test "$verbose" = t then output=$(echo; echo "# Stderr is:"; cat "$stderr") else output= fi # rm first in case test_failure exits. rm "$stderr" if test $test_external_has_tap -eq 0; then test_failure_ "$descr" "$@" "$output" else say_color error "# test_external_without_stderr test $descr failed: $@: $output" test_failure=$(($test_failure + 1)) fi fi } # debugging-friendly alternatives to "test [-f|-d|-e]" # The commands test the existence or non-existence of $1. $2 can be # given to provide a more precise diagnosis. test_path_is_file () { if ! test -f "$1" then echo "File $1 doesn't exist. $2" false fi } test_path_is_dir () { if ! test -d "$1" then echo "Directory $1 doesn't exist. $2" false fi } # Check if the directory exists and is empty as expected, barf otherwise. test_dir_is_empty () { test_path_is_dir "$1" && if test -n "$(ls -a1 "$1" | egrep -v '^\.\.?$')" then echo "Directory '$1' is not empty, it contains:" ls -la "$1" return 1 fi } test_path_is_missing () { if test -e "$1" then echo "Path exists:" ls -ld "$1" if test $# -ge 1 then echo "$*" fi false fi } # test_line_count checks that a file has the number of lines it # ought to. For example: # # test_expect_success 'produce exactly one line of output' ' # do something >output && # test_line_count = 1 output # ' # # is like "test $(wc -l <output) = 1" except that it passes the # output through when the number of lines is wrong. test_line_count () { if test $# != 3 then error "bug in the test script: not 3 parameters to test_line_count" elif ! test $(wc -l <"$3") "$1" "$2" then echo "test_line_count: line count for $3 !$1 $2" cat "$3" return 1 fi } # This is not among top-level (test_expect_success | test_expect_failure) # but is a prefix that can be used in the test script, like: # # test_expect_success 'complain and die' ' # do something && # do something else && # test_must_fail git checkout ../outerspace # ' # # Writing this as "! git checkout ../outerspace" is wrong, because # the failure could be due to a segv. We want a controlled failure. test_must_fail () { "$@" exit_code=$? if test $exit_code = 0; then echo >&2 "test_must_fail: command succeeded: $*" return 1 elif test $exit_code -gt 129 && test $exit_code -le 192; then echo >&2 "test_must_fail: died by signal: $*" return 1 elif test $exit_code = 127; then echo >&2 "test_must_fail: command not found: $*" return 1 elif test $exit_code = 126; then echo >&2 "test_must_fail: valgrind error: $*" return 1 fi return 0 } # Similar to test_must_fail, but tolerates success, too. This is # meant to be used in contexts like: # # test_expect_success 'some command works without configuration' ' # test_might_fail git config --unset all.configuration && # do something # ' # # Writing "git config --unset all.configuration || :" would be wrong, # because we want to notice if it fails due to segv. test_might_fail () { "$@" exit_code=$? if test $exit_code -gt 129 && test $exit_code -le 192; then echo >&2 "test_might_fail: died by signal: $*" return 1 elif test $exit_code = 127; then echo >&2 "test_might_fail: command not found: $*" return 1 fi return 0 } # Similar to test_must_fail and test_might_fail, but check that a # given command exited with a given exit code. Meant to be used as: # # test_expect_success 'Merge with d/f conflicts' ' # test_expect_code 1 git merge "merge msg" B master # ' test_expect_code () { want_code=$1 shift "$@" exit_code=$? if test $exit_code = $want_code then return 0 fi echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*" return 1 } # test_cmp is a helper function to compare actual and expected output. # You can use it like: # # test_expect_success 'foo works' ' # echo expected >expected && # foo >actual && # test_cmp expected actual # ' # # This could be written as either "cmp" or "diff -u", but: # - cmp's output is not nearly as easy to read as diff -u # - not all diff versions understand "-u" test_cmp() { $GIT_TEST_CMP "$@" } # test_cmp_bin - helper to compare binary files test_cmp_bin() { cmp "$@" } # Call any command "$@" but be more verbose about its # failure. This is handy for commands like "test" which do # not output anything when they fail. verbose () { "$@" && return 0 echo >&2 "command failed: $(git rev-parse --sq-quote "$@")" return 1 } # Check if the file expected to be empty is indeed empty, and barfs # otherwise. test_must_be_empty () { if test -s "$1" then echo "'$1' is not empty, it contains:" cat "$1" return 1 fi } # Tests that its two parameters refer to the same revision test_cmp_rev () { git rev-parse --verify "$1" >expect.rev && git rev-parse --verify "$2" >actual.rev && test_cmp expect.rev actual.rev } # Print a sequence of numbers or letters in increasing order. This is # similar to GNU seq(1), but the latter might not be available # everywhere (and does not do letters). It may be used like: # # for i in $(test_seq 100) # do # for j in $(test_seq 10 20) # do # for k in $(test_seq a z) # do # echo $i-$j-$k # done # done # done test_seq () { case $# in 1) set 1 "$@" ;; 2) ;; *) error "bug in the test script: not 1 or 2 parameters to test_seq" ;; esac perl -le 'print for $ARGV[0]..$ARGV[1]' -- "$@" } # This function can be used to schedule some commands to be run # unconditionally at the end of the test to restore sanity: # # test_expect_success 'test core.capslock' ' # git config core.capslock true && # test_when_finished "git config --unset core.capslock" && # hello world # ' # # That would be roughly equivalent to # # test_expect_success 'test core.capslock' ' # git config core.capslock true && # hello world # git config --unset core.capslock # ' # # except that the greeting and config --unset must both succeed for # the test to pass. # # Note that under --immediate mode, no clean-up is done to help diagnose # what went wrong. test_when_finished () { test_cleanup="{ $* } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup" } # Most tests can use the created repository, but some may need to create more. # Usage: test_create_repo <directory> test_create_repo () { test "$#" = 1 || error "bug in the test script: not 1 parameter to test-create-repo" repo="$1" mkdir -p "$repo" ( cd "$repo" || error "Cannot setup test environment" "$GIT_EXEC_PATH/git-init" "--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 || error "cannot run git init -- have you built things yet?" mv .git/hooks .git/hooks-disabled ) || exit } # This function helps on symlink challenged file systems when it is not # important that the file system entry is a symbolic link. # Use test_ln_s_add instead of "ln -s x y && git add y" to add a # symbolic link entry y to the index. test_ln_s_add () { if test_have_prereq SYMLINKS then ln -s "$1" "$2" && git update-index --add "$2" else printf '%s' "$1" >"$2" && ln_s_obj=$(git hash-object -w "$2") && git update-index --add --cacheinfo 120000 $ln_s_obj "$2" && # pick up stat info from the file git update-index "$2" fi } # This function writes out its parameters, one per line test_write_lines () { printf "%s\n" "$@" } perl () { command "$PERL_PATH" "$@" } # Is the value one of the various ways to spell a boolean true/false? test_normalize_bool () { git -c magic.variable="$1" config --bool magic.variable 2>/dev/null } # Given a variable $1, normalize the value of it to one of "true", # "false", or "auto" and store the result to it. # # test_tristate GIT_TEST_HTTPD # # A variable set to an empty string is set to 'false'. # A variable set to 'false' or 'auto' keeps its value. # Anything else is set to 'true'. # An unset variable defaults to 'auto'. # # The last rule is to allow people to set the variable to an empty # string and export it to decline testing the particular feature # for versions both before and after this change. We used to treat # both unset and empty variable as a signal for "do not test" and # took any non-empty string as "please test". test_tristate () { if eval "test x\"\${$1+isset}\" = xisset" then # explicitly set eval " case \"\$$1\" in '') $1=false ;; auto) ;; *) $1=\$(test_normalize_bool \$$1 || echo true) ;; esac " else eval "$1=auto" fi } # Exit the test suite, either by skipping all remaining tests or by # exiting with an error. If "$1" is "auto", we then we assume we were # opportunistically trying to set up some tests and we skip. If it is # "true", then we report a failure. # # The error/skip message should be given by $2. # test_skip_or_die () { case "$1" in auto) skip_all=$2 test_done ;; true) error "$2" ;; *) error "BUG: test tristate is '$1' (real error: $2)" esac } # The following mingw_* functions obey POSIX shell syntax, but are actually # bash scripts, and are meant to be used only with bash on Windows. # A test_cmp function that treats LF and CRLF equal and avoids to fork # diff when possible. mingw_test_cmp () { # Read text into shell variables and compare them. If the results # are different, use regular diff to report the difference. local test_cmp_a= test_cmp_b= # When text came from stdin (one argument is '-') we must feed it # to diff. local stdin_for_diff= # Since it is difficult to detect the difference between an # empty input file and a failure to read the files, we go straight # to diff if one of the inputs is empty. if test -s "$1" && test -s "$2" then # regular case: both files non-empty mingw_read_file_strip_cr_ test_cmp_a <"$1" mingw_read_file_strip_cr_ test_cmp_b <"$2" elif test -s "$1" && test "$2" = - then # read 2nd file from stdin mingw_read_file_strip_cr_ test_cmp_a <"$1" mingw_read_file_strip_cr_ test_cmp_b stdin_for_diff='<<<"$test_cmp_b"' elif test "$1" = - && test -s "$2" then # read 1st file from stdin mingw_read_file_strip_cr_ test_cmp_a mingw_read_file_strip_cr_ test_cmp_b <"$2" stdin_for_diff='<<<"$test_cmp_a"' fi test -n "$test_cmp_a" && test -n "$test_cmp_b" && test "$test_cmp_a" = "$test_cmp_b" || eval "diff -u \"\$@\" $stdin_for_diff" } # $1 is the name of the shell variable to fill in mingw_read_file_strip_cr_ () { # Read line-wise using LF as the line separator # and use IFS to strip CR. local line while : do if IFS=$'\r' read -r -d $'\n' line then # good line=$line$'\n' else # we get here at EOF, but also if the last line # was not terminated by LF; in the latter case, # some text was read if test -z "$line" then # EOF, really break fi fi eval "$1=\$$1\$line" done }