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diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
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+# 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 == 2) return "FAINT";
+ if (n == 3) return "ITALIC";
+ if (n == 7) return "REVERSE";
+ 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($0) - RSTART - RLENGTH + 1);
+ }
+ print
+ }
+ '
+}
+
+lf_to_nul () {
+ perl -pe 'y/\012/\000/'
+}
+
+nul_to_q () {
+ perl -pe 'y/\000/Q/'
+}
+
+q_to_nul () {
+ perl -pe 'y/Q/\000/'
+}
+
+q_to_cr () {
+ tr Q '\015'
+}
+
+q_to_tab () {
+ tr Q '\011'
+}
+
+qz_to_tab_space () {
+ tr QZ '\011\040'
+}
+
+append_cr () {
+ sed -e 's/$/Q/' | tr Q '\015'
+}
+
+remove_cr () {
+ tr '\015' Q | sed -e 's/Q$//'
+}
+
+# Generate an output of $1 bytes of all zeroes (NULs, not ASCII zeroes).
+# If $1 is 'infinity', output forever or until the receiving pipe stops reading,
+# whichever comes first.
+generate_zero_bytes () {
+ test-tool genzeros "$@"
+}
+
+# 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.
+#
+# Be sure to remove all invocations of this command before submitting.
+
+test_pause () {
+ "$SHELL_PATH" <&6 >&5 2>&7
+}
+
+# Wrap git with a debugger. Adding this to a command can make it easier
+# to understand what is going on in a failing test.
+#
+# Examples:
+# debug git checkout master
+# debug --debugger=nemiver git $ARGS
+# debug -d "valgrind --tool=memcheck --track-origins=yes" git $ARGS
+debug () {
+ case "$1" in
+ -d)
+ GIT_DEBUGGER="$2" &&
+ shift 2
+ ;;
+ --debugger=*)
+ GIT_DEBUGGER="${1#*=}" &&
+ shift 1
+ ;;
+ *)
+ GIT_DEBUGGER=1
+ ;;
+ esac &&
+ GIT_DEBUGGER="${GIT_DEBUGGER}" "$@" <&6 >&5 2>&7
+}
+
+# Call test_commit with the arguments
+# [-C <directory>] <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>.
+#
+# If the first argument is "-C", the second argument is used as a path for
+# the git invocations.
+
+test_commit () {
+ notick= &&
+ signoff= &&
+ indir= &&
+ while test $# != 0
+ do
+ case "$1" in
+ --notick)
+ notick=yes
+ ;;
+ --signoff)
+ signoff="$1"
+ ;;
+ -C)
+ indir="$2"
+ shift
+ ;;
+ *)
+ break
+ ;;
+ esac
+ shift
+ done &&
+ indir=${indir:+"$indir"/} &&
+ file=${2:-"$1.t"} &&
+ echo "${3-$1}" > "$indir$file" &&
+ git ${indir:+ -C "$indir"} add "$file" &&
+ if test -z "$notick"
+ then
+ test_tick
+ fi &&
+ git ${indir:+ -C "$indir"} commit $signoff -m "$1" &&
+ git ${indir:+ -C "$indir"} 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 () {
+ label="$1" &&
+ shift &&
+ test_tick &&
+ git merge -m "$label" "$@" &&
+ git tag "$label"
+}
+
+# Efficiently create <nr> commits, each with a unique number (from 1 to <nr>
+# by default) in the commit message.
+#
+# Usage: test_commit_bulk [options] <nr>
+# -C <dir>:
+# Run all git commands in directory <dir>
+# --ref=<n>:
+# ref on which to create commits (default: HEAD)
+# --start=<n>:
+# number commit messages from <n> (default: 1)
+# --message=<msg>:
+# use <msg> as the commit mesasge (default: "commit %s")
+# --filename=<fn>:
+# modify <fn> in each commit (default: %s.t)
+# --contents=<string>:
+# place <string> in each file (default: "content %s")
+# --id=<string>:
+# shorthand to use <string> and %s in message, filename, and contents
+#
+# The message, filename, and contents strings are evaluated by printf, with the
+# first "%s" replaced by the current commit number. So you can do:
+#
+# test_commit_bulk --filename=file --contents="modification %s"
+#
+# to have every commit touch the same file, but with unique content.
+#
+test_commit_bulk () {
+ tmpfile=.bulk-commit.input
+ indir=.
+ ref=HEAD
+ n=1
+ message='commit %s'
+ filename='%s.t'
+ contents='content %s'
+ while test $# -gt 0
+ do
+ case "$1" in
+ -C)
+ indir=$2
+ shift
+ ;;
+ --ref=*)
+ ref=${1#--*=}
+ ;;
+ --start=*)
+ n=${1#--*=}
+ ;;
+ --message=*)
+ message=${1#--*=}
+ ;;
+ --filename=*)
+ filename=${1#--*=}
+ ;;
+ --contents=*)
+ contents=${1#--*=}
+ ;;
+ --id=*)
+ message="${1#--*=} %s"
+ filename="${1#--*=}-%s.t"
+ contents="${1#--*=} %s"
+ ;;
+ -*)
+ BUG "invalid test_commit_bulk option: $1"
+ ;;
+ *)
+ break
+ ;;
+ esac
+ shift
+ done
+ total=$1
+
+ add_from=
+ if git -C "$indir" rev-parse --quiet --verify "$ref"
+ then
+ add_from=t
+ fi
+
+ while test "$total" -gt 0
+ do
+ test_tick &&
+ echo "commit $ref"
+ printf 'author %s <%s> %s\n' \
+ "$GIT_AUTHOR_NAME" \
+ "$GIT_AUTHOR_EMAIL" \
+ "$GIT_AUTHOR_DATE"
+ printf 'committer %s <%s> %s\n' \
+ "$GIT_COMMITTER_NAME" \
+ "$GIT_COMMITTER_EMAIL" \
+ "$GIT_COMMITTER_DATE"
+ echo "data <<EOF"
+ printf "$message\n" $n
+ echo "EOF"
+ if test -n "$add_from"
+ then
+ echo "from $ref^0"
+ add_from=
+ fi
+ printf "M 644 inline $filename\n" $n
+ echo "data <<EOF"
+ printf "$contents\n" $n
+ echo "EOF"
+ echo
+ n=$((n + 1))
+ total=$((total - 1))
+ done >"$tmpfile"
+
+ git -C "$indir" \
+ -c fastimport.unpacklimit=0 \
+ fast-import <"$tmpfile" || return 1
+
+ # This will be left in place on failure, which may aid debugging.
+ rm -f "$tmpfile"
+
+ # If we updated HEAD, then be nice and update the index and working
+ # tree, too.
+ if test "$ref" = "HEAD"
+ then
+ git -C "$indir" checkout -f HEAD || return 1
+ fi
+
+}
+
+# This function helps systems where core.filemode=false is set.
+# Use it instead of plain 'chmod +x' to set or unset the executable bit
+# of a file in the working directory and add it to the index.
+
+test_chmod () {
+ chmod "$@" &&
+ git update-index --add "--chmod=$@"
+}
+
+# Get the modebits from a file or directory, ignoring the setgid bit (g+s).
+# This bit is inherited by subdirectories at their creation. So we remove it
+# from the returning string to prevent callers from having to worry about the
+# state of the bit in the test directory.
+#
+test_modebits () {
+ ls -ld "$1" | sed -e 's|^\(..........\).*|\1|' \
+ -e 's|^\(......\)S|\1-|' -e 's|^\(......\)s|\1x|'
+}
+
+# Unset a configuration variable, but don't fail if it doesn't exist.
+test_unconfig () {
+ config_dir=
+ if test "$1" = -C
+ then
+ shift
+ config_dir=$1
+ shift
+ fi
+ git ${config_dir:+-C "$config_dir"} 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 () {
+ config_dir=
+ if test "$1" = -C
+ then
+ shift
+ config_dir=$1
+ shift
+ fi
+ test_when_finished "test_unconfig ${config_dir:+-C '$config_dir'} '$1'" &&
+ git ${config_dir:+-C "$config_dir"} 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} and test_external{,_without_stderr}.
+#
+# The single parameter is the prerequisite tag (a simple word, in all
+# capital letters by convention).
+
+test_unset_prereq () {
+ ! test_have_prereq "$1" ||
+ satisfied_prereq="${satisfied_prereq% $1 *} ${satisfied_prereq#* $1 }"
+}
+
+test_set_prereq () {
+ if test -n "$GIT_TEST_FAIL_PREREQS_INTERNAL"
+ then
+ case "$1" in
+ # The "!" case is handled below with
+ # test_unset_prereq()
+ !*)
+ ;;
+ # (Temporary?) whitelist of things we can't easily
+ # pretend not to support
+ SYMLINKS)
+ ;;
+ # Inspecting whether GIT_TEST_FAIL_PREREQS is on
+ # should be unaffected.
+ FAIL_PREREQS)
+ ;;
+ *)
+ return
+ esac
+ fi
+
+ case "$1" in
+ !*)
+ test_unset_prereq "${1#!}"
+ ;;
+ *)
+ satisfied_prereq="$satisfied_prereq$1 "
+ ;;
+ esac
+}
+satisfied_prereq=" "
+lazily_testable_prereq= lazily_tested_prereq=
+
+# Usage: test_lazy_prereq PREREQ 'script'
+test_lazy_prereq () {
+ lazily_testable_prereq="$lazily_testable_prereq$1 "
+ eval test_prereq_lazily_$1=\$2
+}
+
+test_run_lazy_prereq_ () {
+ script='
+mkdir -p "$TRASH_DIRECTORY/prereq-test-dir-'"$1"'" &&
+(
+ cd "$TRASH_DIRECTORY/prereq-test-dir-'"$1"'" &&'"$2"'
+)'
+ say >&3 "checking prerequisite: $1"
+ say >&3 "$script"
+ test_eval_ "$script"
+ eval_ret=$?
+ rm -rf "$TRASH_DIRECTORY/prereq-test-dir-$1"
+ if test "$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 "$test_prereq" : '[A-Z0-9_,!]*$' ||
+ BUG "'$test_prereq' does not look like a prereq"
+}
+
+test_expect_failure () {
+ test_start_
+ test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
+ test "$#" = 2 ||
+ BUG "not 2 or 3 parameters to test-expect-failure"
+ test_verify_prereq
+ export test_prereq
+ if ! test_skip "$@"
+ then
+ say >&3 "checking known breakage of $TEST_NUMBER.$test_count '$1': $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 ||
+ BUG "not 2 or 3 parameters to test-expect-success"
+ test_verify_prereq
+ export test_prereq
+ if ! test_skip "$@"
+ then
+ say >&3 "expecting success of $TEST_NUMBER.$test_count '$1': $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 ||
+ BUG "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
+}
+
+test_path_exists () {
+ if ! test -e "$1"
+ then
+ echo "Path $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
+}
+
+# Check if the file exists and has a size greater than zero
+test_file_not_empty () {
+ if ! test -s "$1"
+ then
+ echo "'$1' is not a non-empty file."
+ false
+ 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
+ BUG "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
+}
+
+test_file_size () {
+ test-tool path-utils file-size "$1"
+}
+
+# Returns success if a comma separated string of keywords ($1) contains a
+# given keyword ($2).
+# Examples:
+# `list_contains "foo,bar" bar` returns 0
+# `list_contains "foo" bar` returns 1
+
+list_contains () {
+ case ",$1," in
+ *,$2,*)
+ return 0
+ ;;
+ esac
+ return 1
+}
+
+# Returns success if the arguments indicate that a command should be
+# accepted by test_must_fail(). If the command is run with env, the env
+# and its corresponding variable settings will be stripped before we
+# test the command being run.
+test_must_fail_acceptable () {
+ if test "$1" = "env"
+ then
+ shift
+ while test $# -gt 0
+ do
+ case "$1" in
+ *?=*)
+ shift
+ ;;
+ *)
+ break
+ ;;
+ esac
+ done
+ fi
+
+ case "$1" in
+ git|__git*|test-tool|test_terminal)
+ return 0
+ ;;
+ *)
+ return 1
+ ;;
+ esac
+}
+
+# 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.
+#
+# Accepts the following options:
+#
+# ok=<signal-name>[,<...>]:
+# Don't treat an exit caused by the given signal as error.
+# Multiple signals can be specified as a comma separated list.
+# Currently recognized signal names are: sigpipe, success.
+# (Don't use 'success', use 'test_might_fail' instead.)
+#
+# Do not use this to run anything but "git" and other specific testable
+# commands (see test_must_fail_acceptable()). We are not in the
+# business of vetting system supplied commands -- in other words, this
+# is wrong:
+#
+# test_must_fail grep pattern output
+#
+# Instead use '!':
+#
+# ! grep pattern output
+
+test_must_fail () {
+ case "$1" in
+ ok=*)
+ _test_ok=${1#ok=}
+ shift
+ ;;
+ *)
+ _test_ok=
+ ;;
+ esac
+ if ! test_must_fail_acceptable "$@"
+ then
+ echo >&7 "test_must_fail: only 'git' is allowed: $*"
+ return 1
+ fi
+ "$@" 2>&7
+ exit_code=$?
+ if test $exit_code -eq 0 && ! list_contains "$_test_ok" success
+ then
+ echo >&4 "test_must_fail: command succeeded: $*"
+ return 1
+ elif test_match_signal 13 $exit_code && list_contains "$_test_ok" sigpipe
+ then
+ return 0
+ elif test $exit_code -gt 129 && test $exit_code -le 192
+ then
+ echo >&4 "test_must_fail: died by signal $(($exit_code - 128)): $*"
+ return 1
+ elif test $exit_code -eq 127
+ then
+ echo >&4 "test_must_fail: command not found: $*"
+ return 1
+ elif test $exit_code -eq 126
+ then
+ echo >&4 "test_must_fail: valgrind error: $*"
+ return 1
+ fi
+ return 0
+} 7>&2 2>&4
+
+# Similar to test_must_fail, but tolerates success, too. This is
+# meant to be used in contexts like:
+#
+# test_expect_success 'some command works without configuration' '
+# test_might_fail git config --unset all.configuration &&
+# do something
+# '
+#
+# Writing "git config --unset all.configuration || :" would be wrong,
+# because we want to notice if it fails due to segv.
+#
+# Accepts the same options as test_must_fail.
+
+test_might_fail () {
+ test_must_fail ok=success "$@" 2>&7
+} 7>&2 2>&4
+
+# 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=$1
+ shift
+ "$@" 2>&7
+ exit_code=$?
+ if test $exit_code = $want_code
+ then
+ return 0
+ fi
+
+ echo >&4 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
+ return 1
+} 7>&2 2>&4
+
+# test_cmp is a helper function to compare actual and expected output.
+# You can use it like:
+#
+# test_expect_success 'foo works' '
+# echo expected >expected &&
+# foo >actual &&
+# test_cmp expected actual
+# '
+#
+# This could be written as either "cmp" or "diff -u", but:
+# - cmp's output is not nearly as easy to read as diff -u
+# - not all diff versions understand "-u"
+
+test_cmp () {
+ eval "$GIT_TEST_CMP" '"$@"'
+}
+
+# Check that the given config key has the expected value.
+#
+# test_cmp_config [-C <dir>] <expected-value>
+# [<git-config-options>...] <config-key>
+#
+# for example to check that the value of core.bar is foo
+#
+# test_cmp_config foo core.bar
+#
+test_cmp_config () {
+ local GD &&
+ if test "$1" = "-C"
+ then
+ shift &&
+ GD="-C $1" &&
+ shift
+ fi &&
+ printf "%s\n" "$1" >expect.config &&
+ shift &&
+ git $GD config "$@" >actual.config &&
+ test_cmp expect.config actual.config
+}
+
+# test_cmp_bin - helper to compare binary files
+
+test_cmp_bin () {
+ cmp "$@"
+}
+
+# Use this instead of test_cmp to compare files that contain expected and
+# actual output from git commands that can be translated. When running
+# under GIT_TEST_GETTEXT_POISON this pretends that the command produced expected
+# results.
+test_i18ncmp () {
+ ! test_have_prereq C_LOCALE_OUTPUT || test_cmp "$@"
+}
+
+# Use this instead of "grep expected-string actual" to see if the
+# output from a git command that can be translated either contains an
+# expected string, or does not contain an unwanted one. When running
+# under GIT_TEST_GETTEXT_POISON this pretends that the command produced expected
+# results.
+test_i18ngrep () {
+ eval "last_arg=\${$#}"
+
+ test -f "$last_arg" ||
+ BUG "test_i18ngrep requires a file to read as the last parameter"
+
+ if test $# -lt 2 ||
+ { test "x!" = "x$1" && test $# -lt 3 ; }
+ then
+ BUG "too few parameters to test_i18ngrep"
+ fi
+
+ if test_have_prereq !C_LOCALE_OUTPUT
+ then
+ # pretend success
+ return 0
+ fi
+
+ if test "x!" = "x$1"
+ then
+ shift
+ ! grep "$@" && return 0
+
+ echo >&4 "error: '! grep $@' did find a match in:"
+ else
+ grep "$@" && return 0
+
+ echo >&4 "error: 'grep $@' didn't find a match in:"
+ fi
+
+ if test -s "$last_arg"
+ then
+ cat >&4 "$last_arg"
+ else
+ echo >&4 "<File '$last_arg' is empty>"
+ fi
+
+ return 1
+}
+
+# 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 >&4 "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 () {
+ test_path_is_file "$1" &&
+ 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, or if '!' is
+# provided first, that its other two parameters refer to different
+# revisions.
+test_cmp_rev () {
+ local op='=' wrong_result=different
+
+ if test $# -ge 1 && test "x$1" = 'x!'
+ then
+ op='!='
+ wrong_result='the same'
+ shift
+ fi
+ if test $# != 2
+ then
+ error "bug in the test script: test_cmp_rev requires two revisions, but got $#"
+ else
+ local r1 r2
+ r1=$(git rev-parse --verify "$1") &&
+ r2=$(git rev-parse --verify "$2") || return 1
+
+ if ! test "$r1" "$op" "$r2"
+ then
+ cat >&4 <<-EOF
+ error: two revisions point to $wrong_result objects:
+ '$1': $r1
+ '$2': $r2
+ EOF
+ return 1
+ fi
+ fi
+}
+
+# Compare paths respecting core.ignoreCase
+test_cmp_fspath () {
+ if test "x$1" = "x$2"
+ then
+ return 0
+ fi
+
+ if test true != "$(git config --get --type=bool core.ignorecase)"
+ then
+ return 1
+ fi
+
+ test "x$(echo "$1" | tr A-Z a-z)" = "x$(echo "$2" | tr A-Z a-z)"
+}
+
+# Print a sequence of integers in increasing order, either with
+# two arguments (start and end):
+#
+# test_seq 1 5 -- outputs 1 2 3 4 5 one line at a time
+#
+# or with one argument (end), in which case it starts counting
+# from 1.
+
+test_seq () {
+ case $# in
+ 1) set 1 "$@" ;;
+ 2) ;;
+ *) BUG "not 1 or 2 parameters to test_seq" ;;
+ esac
+ test_seq_counter__=$1
+ while test "$test_seq_counter__" -le "$2"
+ do
+ echo "$test_seq_counter__"
+ test_seq_counter__=$(( $test_seq_counter__ + 1 ))
+ done
+}
+
+# This function can be used to schedule some commands to be run
+# unconditionally at the end of the test to restore sanity:
+#
+# test_expect_success 'test core.capslock' '
+# git config core.capslock true &&
+# test_when_finished "git config --unset core.capslock" &&
+# hello world
+# '
+#
+# That would be roughly equivalent to
+#
+# test_expect_success 'test core.capslock' '
+# git config core.capslock true &&
+# hello world
+# git config --unset core.capslock
+# '
+#
+# except that the greeting and config --unset must both succeed for
+# the test to pass.
+#
+# Note that under --immediate mode, no clean-up is done to help diagnose
+# what went wrong.
+
+test_when_finished () {
+ # We cannot detect when we are in a subshell in general, but by
+ # doing so on Bash is better than nothing (the test will
+ # silently pass on other shells).
+ test "${BASH_SUBSHELL-0}" = 0 ||
+ BUG "test_when_finished does nothing in a subshell"
+ test_cleanup="{ $*
+ } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
+}
+
+# This function can be used to schedule some commands to be run
+# unconditionally at the end of the test script, e.g. to stop a daemon:
+#
+# test_expect_success 'test git daemon' '
+# git daemon &
+# daemon_pid=$! &&
+# test_atexit 'kill $daemon_pid' &&
+# hello world
+# '
+#
+# The commands will be executed before the trash directory is removed,
+# i.e. the atexit commands will still be able to access any pidfiles or
+# socket files.
+#
+# Note that these commands will be run even when a test script run
+# with '--immediate' fails. Be careful with your atexit commands to
+# minimize any changes to the failed state.
+
+test_atexit () {
+ # We cannot detect when we are in a subshell in general, but by
+ # doing so on Bash is better than nothing (the test will
+ # silently pass on other shells).
+ test "${BASH_SUBSHELL-0}" = 0 ||
+ error "bug in test script: test_atexit does nothing in a subshell"
+ test_atexit_cleanup="{ $*
+ } && (exit \"\$eval_ret\"); eval_ret=\$?; $test_atexit_cleanup"
+}
+
+# Most tests can use the created repository, but some may need to create more.
+# Usage: test_create_repo <directory>
+test_create_repo () {
+ test "$#" = 1 ||
+ BUG "not 1 parameter to test-create-repo"
+ repo="$1"
+ mkdir -p "$repo"
+ (
+ cd "$repo" || error "Cannot setup test environment"
+ "${GIT_TEST_INSTALLED:-$GIT_EXEC_PATH}/git$X" -c \
+ init.defaultBranch="${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME-master}" \
+ init \
+ "--template=$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 "$PERL_PATH" "$@" 2>&7
+} 7>&2 2>&4
+
+# Given the name of an environment variable with a bool value, normalize
+# its value to a 0 (true) or 1 (false or empty string) return code.
+#
+# test_bool_env GIT_TEST_HTTPD <default-value>
+#
+# Return with code corresponding to the given default value if the variable
+# is unset.
+# Abort the test script if either the value of the variable or the default
+# are not valid bool values.
+
+test_bool_env () {
+ if test $# != 2
+ then
+ BUG "test_bool_env requires two parameters (variable name and default value)"
+ fi
+
+ git env--helper --type=bool --default="$2" --exit-code "$1"
+ ret=$?
+ case $ret in
+ 0|1) # unset or valid bool value
+ ;;
+ *) # invalid bool value or something unexpected
+ error >&7 "test_bool_env requires bool values both for \$$1 and for the default fallback"
+ ;;
+ esac
+ return $ret
+}
+
+# Exit the test suite, either by skipping all remaining tests or by
+# exiting with an error. If our prerequisite variable $1 falls back
+# on a default assume we were opportunistically trying to set up some
+# tests and we skip. If it is explicitly "true", then we report a failure.
+#
+# The error/skip message should be given by $2.
+#
+test_skip_or_die () {
+ if ! test_bool_env "$1" false
+ then
+ skip_all=$2
+ test_done
+ fi
+ error "$2"
+}
+
+# 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
+}
+
+# Like "env FOO=BAR some-program", but run inside a subshell, which means
+# it also works for shell functions (though those functions cannot impact
+# the environment outside of the test_env invocation).
+test_env () {
+ (
+ while test $# -gt 0
+ do
+ case "$1" in
+ *=*)
+ eval "${1%%=*}=\${1#*=}"
+ eval "export ${1%%=*}"
+ shift
+ ;;
+ *)
+ "$@" 2>&7
+ exit
+ ;;
+ esac
+ done
+ )
+} 7>&2 2>&4
+
+# Returns true if the numeric exit code in "$2" represents the expected signal
+# in "$1". Signals should be given numerically.
+test_match_signal () {
+ if test "$2" = "$((128 + $1))"
+ then
+ # POSIX
+ return 0
+ elif test "$2" = "$((256 + $1))"
+ then
+ # ksh
+ return 0
+ fi
+ return 1
+}
+
+# Read up to "$1" bytes (or to EOF) from stdin and write them to stdout.
+test_copy_bytes () {
+ perl -e '
+ my $len = $ARGV[1];
+ while ($len > 0) {
+ my $s;
+ my $nread = sysread(STDIN, $s, $len);
+ die "cannot read: $!" unless defined($nread);
+ last unless $nread;
+ print $s;
+ $len -= $nread;
+ }
+ ' - "$1"
+}
+
+# run "$@" inside a non-git directory
+nongit () {
+ test -d non-repo ||
+ mkdir non-repo ||
+ return 1
+
+ (
+ GIT_CEILING_DIRECTORIES=$(pwd) &&
+ export GIT_CEILING_DIRECTORIES &&
+ cd non-repo &&
+ "$@" 2>&7
+ )
+} 7>&2 2>&4
+
+# convert function arguments or stdin (if not arguments given) to pktline
+# representation. If multiple arguments are given, they are separated by
+# whitespace and put in a single packet. Note that data containing NULs must be
+# given on stdin, and that empty input becomes an empty packet, not a flush
+# packet (for that you can just print 0000 yourself).
+packetize () {
+ if test $# -gt 0
+ then
+ packet="$*"
+ printf '%04x%s' "$((4 + ${#packet}))" "$packet"
+ else
+ perl -e '
+ my $packet = do { local $/; <STDIN> };
+ printf "%04x%s", 4 + length($packet), $packet;
+ '
+ fi
+}
+
+# Parse the input as a series of pktlines, writing the result to stdout.
+# Sideband markers are removed automatically, and the output is routed to
+# stderr if appropriate.
+#
+# NUL bytes are converted to "\\0" for ease of parsing with text tools.
+depacketize () {
+ perl -e '
+ while (read(STDIN, $len, 4) == 4) {
+ if ($len eq "0000") {
+ print "FLUSH\n";
+ } else {
+ read(STDIN, $buf, hex($len) - 4);
+ $buf =~ s/\0/\\0/g;
+ if ($buf =~ s/^[\x2\x3]//) {
+ print STDERR $buf;
+ } else {
+ $buf =~ s/^\x1//;
+ print $buf;
+ }
+ }
+ }
+ '
+}
+
+# Converts base-16 data into base-8. The output is given as a sequence of
+# escaped octals, suitable for consumption by 'printf'.
+hex2oct () {
+ perl -ne 'printf "\\%03o", hex for /../g'
+}
+
+# Set the hash algorithm in use to $1. Only useful when testing the testsuite.
+test_set_hash () {
+ test_hash_algo="$1"
+}
+
+# Detect the hash algorithm in use.
+test_detect_hash () {
+ test_hash_algo="${GIT_TEST_DEFAULT_HASH:-sha1}"
+}
+
+# Load common hash metadata and common placeholder object IDs for use with
+# test_oid.
+test_oid_init () {
+ test -n "$test_hash_algo" || test_detect_hash &&
+ test_oid_cache <"$TEST_DIRECTORY/oid-info/hash-info" &&
+ test_oid_cache <"$TEST_DIRECTORY/oid-info/oid"
+}
+
+# Load key-value pairs from stdin suitable for use with test_oid. Blank lines
+# and lines starting with "#" are ignored. Keys must be shell identifier
+# characters.
+#
+# Examples:
+# rawsz sha1:20
+# rawsz sha256:32
+test_oid_cache () {
+ local tag rest k v &&
+
+ { test -n "$test_hash_algo" || test_detect_hash; } &&
+ while read tag rest
+ do
+ case $tag in
+ \#*)
+ continue;;
+ ?*)
+ # non-empty
+ ;;
+ *)
+ # blank line
+ continue;;
+ esac &&
+
+ k="${rest%:*}" &&
+ v="${rest#*:}" &&
+
+ if ! expr "$k" : '[a-z0-9][a-z0-9]*$' >/dev/null
+ then
+ BUG 'bad hash algorithm'
+ fi &&
+ eval "test_oid_${k}_$tag=\"\$v\""
+ done
+}
+
+# Look up a per-hash value based on a key ($1). The value must have been loaded
+# by test_oid_init or test_oid_cache.
+test_oid () {
+ local algo="${test_hash_algo}" &&
+
+ case "$1" in
+ --hash=*)
+ algo="${1#--hash=}" &&
+ shift;;
+ *)
+ ;;
+ esac &&
+
+ local var="test_oid_${algo}_$1" &&
+
+ # If the variable is unset, we must be missing an entry for this
+ # key-hash pair, so exit with an error.
+ if eval "test -z \"\${$var+set}\""
+ then
+ BUG "undefined key '$1'"
+ fi &&
+ eval "printf '%s' \"\${$var}\""
+}
+
+# Insert a slash into an object ID so it can be used to reference a location
+# under ".git/objects". For example, "deadbeef..." becomes "de/adbeef..".
+test_oid_to_path () {
+ local basename=${1#??}
+ echo "${1%$basename}/$basename"
+}
+
+# Choose a port number based on the test script's number and store it in
+# the given variable name, unless that variable already contains a number.
+test_set_port () {
+ local var=$1 port
+
+ if test $# -ne 1 || test -z "$var"
+ then
+ BUG "test_set_port requires a variable name"
+ fi
+
+ eval port=\$$var
+ case "$port" in
+ "")
+ # No port is set in the given env var, use the test
+ # number as port number instead.
+ # Remove not only the leading 't', but all leading zeros
+ # as well, so the arithmetic below won't (mis)interpret
+ # a test number like '0123' as an octal value.
+ port=${this_test#${this_test%%[1-9]*}}
+ if test "${port:-0}" -lt 1024
+ then
+ # root-only port, use a larger one instead.
+ port=$(($port + 10000))
+ fi
+ ;;
+ *[!0-9]*|0*)
+ error >&7 "invalid port number: $port"
+ ;;
+ *)
+ # The user has specified the port.
+ ;;
+ esac
+
+ # Make sure that parallel '--stress' test jobs get different
+ # ports.
+ port=$(($port + ${GIT_TEST_STRESS_JOB_NR:-0}))
+ eval $var=$port
+}
+
+# Compare a file containing rev-list bitmap traversal output to its non-bitmap
+# counterpart. You can't just use test_cmp for this, because the two produce
+# subtly different output:
+#
+# - regular output is in traversal order, whereas bitmap is split by type,
+# with non-packed objects at the end
+#
+# - regular output has a space and the pathname appended to non-commit
+# objects; bitmap output omits this
+#
+# This function normalizes and compares the two. The second file should
+# always be the bitmap output.
+test_bitmap_traversal () {
+ if test "$1" = "--no-confirm-bitmaps"
+ then
+ shift
+ elif cmp "$1" "$2"
+ then
+ echo >&2 "identical raw outputs; are you sure bitmaps were used?"
+ return 1
+ fi &&
+ cut -d' ' -f1 "$1" | sort >"$1.normalized" &&
+ sort "$2" >"$2.normalized" &&
+ test_cmp "$1.normalized" "$2.normalized" &&
+ rm -f "$1.normalized" "$2.normalized"
+}
+
+# Tests for the hidden file attribute on Windows
+test_path_is_hidden () {
+ test_have_prereq MINGW ||
+ BUG "test_path_is_hidden can only be used on Windows"
+
+ # Use the output of `attrib`, ignore the absolute path
+ case "$("$SYSTEMROOT"/system32/attrib "$1")" in *H*?:*) return 0;; esac
+ return 1
+}
+
+# Check that the given command was invoked as part of the
+# trace2-format trace on stdin.
+#
+# test_subcommand [!] <command> <args>... < <trace>
+#
+# For example, to look for an invocation of "git upload-pack
+# /path/to/repo"
+#
+# GIT_TRACE2_EVENT=event.log git fetch ... &&
+# test_subcommand git upload-pack "$PATH" <event.log
+#
+# If the first parameter passed is !, this instead checks that
+# the given command was not called.
+#
+test_subcommand () {
+ local negate=
+ if test "$1" = "!"
+ then
+ negate=t
+ shift
+ fi
+
+ local expr=$(printf '"%s",' "$@")
+ expr="${expr%,}"
+
+ if test -n "$negate"
+ then
+ ! grep "\[$expr\]"
+ else
+ grep "\[$expr\]"
+ fi
+}