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Diffstat (limited to 't/test-lib-functions.sh')
| -rw-r--r-- | t/test-lib-functions.sh | 565 |
1 files changed, 565 insertions, 0 deletions
diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh new file mode 100644 index 0000000000..16397691d9 --- /dev/null +++ b/t/test-lib-functions.sh @@ -0,0 +1,565 @@ +#!/bin/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_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_PATH" -pe 'y/\000/Q/' +} + +q_to_nul () { + "$PERL_PATH" -pe 'y/Q/\000/' +} + +q_to_cr () { + tr Q '\015' +} + +q_to_tab () { + tr Q '\011' +} + +append_cr () { + sed -e 's/$/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 + "$SHELL_PATH" <&6 >&3 2>&4 + else + error >&5 "test_pause requires --verbose" + fi +} + +# Call test_commit with the arguments "<message> [<file> [<contents>]]" +# +# This will commit a file with the given contents and the given commit +# message. It will also add a tag with <message> as name. +# +# Both <file> and <contents> default to <message>. + +test_commit () { + file=${2:-"$1.t"} + echo "${3-$1}" > "$file" && + git add "$file" && + test_tick && + git commit -m "$1" && + git tag "$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 "$1" +} + +# Use test_set_prereq to tell that a particular prerequisite is available. +# The prerequisite can later be checked for in two ways: +# +# - Explicitly using test_have_prereq. +# +# - Implicitly by specifying the prerequisite tag in the calls to +# test_expect_{success,failure,code}. +# +# The single parameter is the prerequisite tag (a simple word, in all +# capital letters by convention). + +test_set_prereq () { + satisfied="$satisfied$1 " +} +satisfied=" " + +test_have_prereq () { + # prerequisites can be concatenated with ',' + save_IFS=$IFS + IFS=, + set -- $* + IFS=$save_IFS + + total_prereq=0 + ok_prereq=0 + missing_prereq= + + for prerequisite + do + total_prereq=$(($total_prereq + 1)) + case $satisfied in + *" $prerequisite "*) + ok_prereq=$(($ok_prereq + 1)) + ;; + *) + # Keep a list of missing prerequisites + if test -z "$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 + *,$1,*) + return 0 + ;; + esac + return 1 +} + +test_expect_failure () { + test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= + test "$#" = 2 || + error "bug in the test script: not 2 or 3 parameters to test-expect-failure" + 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_ "$1" + fi + fi + echo >&3 "" +} + +test_expect_success () { + test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= + test "$#" = 2 || + error "bug in the test script: not 2 or 3 parameters to test-expect-success" + 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 + echo >&3 "" +} + +# 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="$1" + shift + export test_prereq + if ! test_skip "$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. + "$@" 2>&4 + if [ "$?" = 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" + [ -f "$stderr" ] || error "Internal error: $stderr disappeared." + descr="no stderr: $1" + shift + say >&3 "# expecting no stderr from previous command" + if [ ! -s "$stderr" ]; then + rm "$stderr" + + if test $test_external_has_tap -eq 0; then + test_ok_ "$descr" + else + say_color "" "# test_external_without_stderr test $descr was ok" + test_success=$(($test_success + 1)) + fi + else + if [ "$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 ! [ -f "$1" ] + then + echo "File $1 doesn't exist. $*" + false + fi +} + +test_path_is_dir () { + if ! [ -d "$1" ] + then + echo "Directory $1 doesn't exist. $*" + false + fi +} + +test_path_is_missing () { + if [ -e "$1" ] + then + echo "Path exists:" + ls -ld "$1" + if [ $# -ge 1 ]; then + echo "$*" + 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 -a $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: $*" + return 1 + fi + return 0 +} + +# Similar to test_must_fail, but tolerates success, too. This is +# meant to be used in contexts like: +# +# test_expect_success 'some command works without configuration' ' +# test_might_fail git config --unset all.configuration && +# do something +# ' +# +# Writing "git config --unset all.configuration || :" would be wrong, +# because we want to notice if it fails due to segv. + +test_might_fail () { + "$@" + exit_code=$? + if test $exit_code -gt 129 -a $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() { + $GIT_TEST_CMP "$@" +} + +# 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 +} |