Tomb/extras/test/sharness

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#!/bin/sh
#
# Copyright (c) 2011-2012 Mathias Lafeldt
# Copyright (c) 2005-2012 Git project
# Copyright (c) 2005-2012 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/ .
# Public: Current version of Sharness.
SHARNESS_VERSION="1.0.0"
export SHARNESS_VERSION
# Public: The file extension for tests. By default, it is set to "t".
: ${SHARNESS_TEST_EXTENSION:=t}
export SHARNESS_TEST_EXTENSION
# Reset TERM to original terminal if found, otherwise save orignal TERM
[ "x" = "x$SHARNESS_ORIG_TERM" ] &&
SHARNESS_ORIG_TERM="$TERM" ||
TERM="$SHARNESS_ORIG_TERM"
# Public: The unsanitized TERM under which sharness is originally run
export SHARNESS_ORIG_TERM
# Export SHELL_PATH
: ${SHELL_PATH:=$SHELL}
export SHELL_PATH
# For repeatability, reset the environment to a known state.
# TERM is sanitized below, after saving color control sequences.
LANG=C
LC_ALL=C
PAGER=cat
TZ=UTC
EDITOR=:
export LANG LC_ALL PAGER TZ EDITOR
unset VISUAL CDPATH GREP_OPTIONS
# Line feed
LF='
'
[ "x$TERM" != "xdumb" ] && (
[ -t 1 ] &&
tput bold >/dev/null 2>&1 &&
tput setaf 1 >/dev/null 2>&1 &&
tput sgr0 >/dev/null 2>&1
) &&
color=t
while test "$#" -ne 0; do
case "$1" in
-d|--d|--de|--deb|--debu|--debug)
debug=t; shift ;;
-i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
immediate=t; shift ;;
-l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
TEST_LONG=t; export TEST_LONG; shift ;;
--in|--int|--inte|--inter|--intera|--interac|--interact|--interacti|--interactiv|--interactive|--interactive-|--interactive-t|--interactive-te|--interactive-tes|--interactive-test|--interactive-tests):
TEST_INTERACTIVE=t; export TEST_INTERACTIVE; verbose=t; shift ;;
-h|--h|--he|--hel|--help)
help=t; shift ;;
-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
verbose=t; shift ;;
-q|--q|--qu|--qui|--quie|--quiet)
# Ignore --quiet under a TAP::Harness. Saying how many tests
# passed without the ok/not ok details is always an error.
test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
--chain-lint)
chain_lint=t; shift ;;
--no-chain-lint)
chain_lint=; shift ;;
--no-color)
color=; shift ;;
--root=*)
root=$(expr "z$1" : 'z[^=]*=\(.*\)')
shift ;;
*)
echo "error: unknown test option '$1'" >&2; exit 1 ;;
esac
done
if test -n "$color"; then
# Save the color control sequences now rather than run tput
# each time say_color() is called. This is done for two
# reasons:
# * TERM will be changed to dumb
# * HOME will be changed to a temporary directory and tput
# might need to read ~/.terminfo from the original HOME
# directory to get the control sequences
# Note: This approach assumes the control sequences don't end
# in a newline for any terminal of interest (command
# substitutions strip trailing newlines). Given that most
# (all?) terminals in common use are related to ECMA-48, this
# shouldn't be a problem.
say_color_error=$(tput bold; tput setaf 1) # bold red
say_color_skip=$(tput setaf 4) # blue
say_color_warn=$(tput setaf 3) # brown/yellow
say_color_pass=$(tput setaf 2) # green
say_color_info=$(tput setaf 6) # cyan
say_color_reset=$(tput sgr0)
say_color_="" # no formatting for normal text
say_color() {
test -z "$1" && test -n "$quiet" && return
eval "say_color_color=\$say_color_$1"
shift
printf "%s\\n" "$say_color_color$*$say_color_reset"
}
else
say_color() {
test -z "$1" && test -n "$quiet" && return
shift
printf "%s\n" "$*"
}
fi
TERM=dumb
export TERM
error() {
say_color error "error: $*"
EXIT_OK=t
exit 1
}
say() {
say_color info "$*"
}
test -n "$test_description" || error "Test script did not set test_description."
if test "$help" = "t"; then
echo "$test_description"
exit 0
fi
exec 5>&1
exec 6<&0
if test "$verbose" = "t"; then
exec 4>&2 3>&1
else
exec 4>/dev/null 3>/dev/null
fi
test_failure=0
test_count=0
test_fixed=0
test_broken=0
test_success=0
die() {
code=$?
if test -n "$EXIT_OK"; then
exit $code
else
echo >&5 "FATAL: Unexpected exit with code $code"
exit 1
fi
}
EXIT_OK=
trap 'die' EXIT
# Public: Define that a test prerequisite is available.
#
# The prerequisite can later be checked explicitly using test_have_prereq or
# implicitly by specifying the prerequisite name in calls to test_expect_success
# or test_expect_failure.
#
# $1 - Name of prerequiste (a simple word, in all capital letters by convention)
#
# Examples
#
# # Set PYTHON prerequisite if interpreter is available.
# command -v python >/dev/null && test_set_prereq PYTHON
#
# # Set prerequisite depending on some variable.
# test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
#
# Returns nothing.
test_set_prereq() {
satisfied_prereq="$satisfied_prereq$1 "
}
satisfied_prereq=" "
# Public: Check if one or more test prerequisites are defined.
#
# The prerequisites must have previously been set with test_set_prereq.
# The most common use of this is to skip all the tests if some essential
# prerequisite is missing.
#
# $1 - Comma-separated list of test prerequisites.
#
# Examples
#
# # Skip all remaining tests if prerequisite is not set.
# if ! test_have_prereq PERL; then
# skip_all='skipping perl interface tests, perl not available'
# test_done
# fi
#
# Returns 0 if all prerequisites are defined or 1 otherwise.
test_have_prereq() {
# prerequisites can be concatenated with ','
save_IFS=$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
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 = $ok_prereq
}
# You are not expected to call test_ok_ and test_failure_ directly, use
# the text_expect_* functions instead.
test_ok_() {
test_success=$(($test_success + 1))
say_color "" "ok $test_count - $@"
}
test_failure_() {
test_failure=$(($test_failure + 1))
say_color error "not ok $test_count - $1"
shift
echo "$@" | sed -e 's/^/# /'
test "$immediate" = "" || { EXIT_OK=t; exit 1; }
}
test_known_broken_ok_() {
test_fixed=$(($test_fixed + 1))
say_color error "ok $test_count - $@ # TODO known breakage vanished"
}
test_known_broken_failure_() {
test_broken=$(($test_broken + 1))
say_color warn "not ok $test_count - $@ # TODO known breakage"
}
# Public: Execute commands in debug mode.
#
# Takes a single argument and evaluates it only when the test script is started
# with --debug. This is primarily meant for use during the development of test
# scripts.
#
# $1 - Commands to be executed.
#
# Examples
#
# test_debug "cat some_log_file"
#
# Returns the exit code of the last command executed in debug mode or 0
# otherwise.
test_debug() {
test "$debug" = "" || eval "$1"
}
# Public: Stop execution and start a shell.
#
# This is useful for debugging tests and only makes sense together with "-v".
# Be sure to remove all invocations of this command before submitting.
test_pause() {
if test "$verbose" = t; then
"$SHELL_PATH" <&6 >&3 2>&4
else
error >&5 "test_pause requires --verbose"
fi
}
test_eval_() {
# This is a separate function because some tests use
# "return" to end a test_expect_success block early.
case ",$test_prereq," in
*,INTERACTIVE,*)
eval "$*"
;;
*)
eval </dev/null >&3 2>&4 "$*"
;;
esac
}
test_run_() {
test_cleanup=:
expecting_failure=$2
test_eval_ "$1"
eval_ret=$?
if test "$chain_lint" = "t"; then
test_eval_ "(exit 117) && $1"
if test "$?" != 117; then
error "bug in the test script: broken &&-chain: $1"
fi
fi
if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"; then
test_eval_ "$test_cleanup"
fi
if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
echo ""
fi
return "$eval_ret"
}
test_skip_() {
test_count=$(($test_count + 1))
to_skip=
for skp in $SKIP_TESTS; do
case $this_test.$test_count in
$skp)
to_skip=t
break
esac
done
if test -z "$to_skip" && test -n "$test_prereq" && ! test_have_prereq "$test_prereq"; then
to_skip=t
fi
case "$to_skip" in
t)
of_prereq=
if test "$missing_prereq" != "$test_prereq"; then
of_prereq=" of $test_prereq"
fi
say_color skip >&3 "skipping test: $@"
say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
: true
;;
*)
false
;;
esac
}
# Public: Run test commands and expect them to succeed.
#
# When the test passed, an "ok" message is printed and the number of successful
# tests is incremented. When it failed, a "not ok" message is printed and the
# number of failed tests is incremented.
#
# With --immediate, exit test immediately upon the first failed test.
#
# Usually takes two arguments:
# $1 - Test description
# $2 - Commands to be executed.
#
# With three arguments, the first will be taken to be a prerequisite:
# $1 - Comma-separated list of test prerequisites. The test will be skipped if
# not all of the given prerequisites are set. To negate a prerequisite,
# put a "!" in front of it.
# $2 - Test description
# $3 - Commands to be executed.
#
# Examples
#
# test_expect_success \
# 'git-write-tree should be able to write an empty tree.' \
# 'tree=$(git-write-tree)'
#
# # Test depending on one prerequisite.
# test_expect_success TTY 'git --paginate rev-list uses a pager' \
# ' ... '
#
# # Multiple prerequisites are separated by a comma.
# test_expect_success PERL,PYTHON 'yo dawg' \
# ' test $(perl -E 'print eval "1 +" . qx[python -c "print 2"]') == "4" '
#
# Returns nothing.
test_expect_success() {
test "$#" = 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 ""
}
# Public: Run test commands and expect them to fail. Used to demonstrate a known
# breakage.
#
# This is NOT the opposite of test_expect_success, but rather used to mark a
# test that demonstrates a known breakage.
#
# When the test passed, an "ok" message is printed and the number of fixed tests
# is incremented. When it failed, a "not ok" message is printed and the number
# of tests still broken is incremented.
#
# Failures from these tests won't cause --immediate to stop.
#
# Usually takes two arguments:
# $1 - Test description
# $2 - Commands to be executed.
#
# With three arguments, the first will be taken to be a prerequisite:
# $1 - Comma-separated list of test prerequisites. The test will be skipped if
# not all of the given prerequisites are set. To negate a prerequisite,
# put a "!" in front of it.
# $2 - Test description
# $3 - Commands to be executed.
#
# Returns nothing.
test_expect_failure() {
test "$#" = 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 ""
}
# Public: Run command and ensure that it fails in a controlled way.
#
# Use it instead of "! <command>". For example, when <command> dies due to a
# segfault, test_must_fail diagnoses it as an error, while "! <command>" would
# mistakenly be treated as just another expected failure.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1.. - Command to be executed.
#
# Examples
#
# test_expect_success 'complain and die' '
# do something &&
# do something else &&
# test_must_fail git checkout ../outerspace
# '
#
# Returns 1 if the command succeeded (exit code 0).
# Returns 1 if the command died by signal (exit codes 130-192)
# Returns 1 if the command could not be found (exit code 127).
# Returns 0 otherwise.
test_must_fail() {
"$@"
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
}
# Public: Run command and ensure that it succeeds or fails in a controlled way.
#
# Similar to test_must_fail, but tolerates success too. Use it instead of
# "<command> || :" to catch failures caused by a segfault, for instance.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1.. - Command to be executed.
#
# Examples
#
# test_expect_success 'some command works without configuration' '
# test_might_fail git config --unset all.configuration &&
# do something
# '
#
# Returns 1 if the command died by signal (exit codes 130-192)
# Returns 1 if the command could not be found (exit code 127).
# Returns 0 otherwise.
test_might_fail() {
"$@"
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
}
# Public: Run command and ensure it exits with a given exit code.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1 - Expected exit code.
# $2.. - Command to be executed.
#
# Examples
#
# test_expect_success 'Merge with d/f conflicts' '
# test_expect_code 1 git merge "merge msg" B master
# '
#
# Returns 0 if the expected exit code is returned or 1 otherwise.
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
}
# Public: Compare two files to see if expected output matches actual output.
#
# The TEST_CMP variable defines the command used for the comparision; it
# defaults to "diff -u". Only when the test script was started with --verbose,
# will the command's output, the diff, be printed to the standard output.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1 - Path to file with expected output.
# $2 - Path to file with actual output.
#
# Examples
#
# test_expect_success 'foo works' '
# echo expected >expected &&
# foo >actual &&
# test_cmp expected actual
# '
#
# Returns the exit code of the command set by TEST_CMP.
test_cmp() {
${TEST_CMP:-diff -u} "$@"
}
# Public: portably print a sequence of numbers.
#
# seq is not in POSIX and GNU seq might not be available everywhere,
# so it is nice to have a seq implementation, even a very simple one.
#
# $1 - Starting number.
# $2 - Ending number.
#
# Examples
#
# test_expect_success 'foo works 10 times' '
# for i in $(test_seq 1 10)
# do
# foo || return
# done
# '
#
# Returns 0 if all the specified numbers can be displayed.
test_seq() {
i="$1"
j="$2"
while test "$i" -le "$j"
do
echo "$i" || return
i=$(expr "$i" + 1)
done
}
# Public: Check if the file expected to be empty is indeed empty, and barfs
# otherwise.
#
# $1 - File to check for emptyness.
#
# Returns 0 if file is empty, 1 otherwise.
test_must_be_empty() {
if test -s "$1"
then
echo "'$1' is not empty, it contains:"
cat "$1"
return 1
fi
}
# Public: Schedule cleanup commands to be run unconditionally at the end of a
# test.
#
# If some cleanup command fails, the test will not pass. With --immediate, no
# cleanup is done to help diagnose what went wrong.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1.. - Commands to prepend to the list of cleanup commands.
#
# Examples
#
# test_expect_success 'test core.capslock' '
# git config core.capslock true &&
# test_when_finished "git config --unset core.capslock" &&
# do_something
# '
#
# Returns the exit code of the last cleanup command executed.
test_when_finished() {
test_cleanup="{ $*
} && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
}
# Public: Schedule cleanup commands to be run unconditionally when all tests
# have run.
#
# This can be used to clean up things like test databases. It is not needed to
# clean up temporary files, as test_done already does that.
#
# Examples:
#
# cleanup mysql -e "DROP DATABASE mytest"
#
# Returns the exit code of the last cleanup command executed.
final_cleanup=
cleanup() {
final_cleanup="{ $*
} && (exit \"\$eval_ret\"); eval_ret=\$?; $final_cleanup"
}
# Public: Summarize test results and exit with an appropriate error code.
#
# Must be called at the end of each test script.
#
# Can also be used to stop tests early and skip all remaining tests. For this,
# set skip_all to a string explaining why the tests were skipped before calling
# test_done.
#
# Examples
#
# # Each test script must call test_done at the end.
# test_done
#
# # Skip all remaining tests if prerequisite is not set.
# if ! test_have_prereq PERL; then
# skip_all='skipping perl interface tests, perl not available'
# test_done
# fi
#
# Returns 0 if all tests passed or 1 if there was a failure.
test_done() {
EXIT_OK=t
if test -z "$HARNESS_ACTIVE"; then
test_results_dir="$SHARNESS_TEST_DIRECTORY/test-results"
mkdir -p "$test_results_dir"
test_results_path="$test_results_dir/$this_test.$$.counts"
cat >>"$test_results_path" <<-EOF
total $test_count
success $test_success
fixed $test_fixed
broken $test_broken
failed $test_failure
EOF
fi
if test "$test_fixed" != 0; then
say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
fi
if test "$test_broken" != 0; then
say_color warn "# still have $test_broken known breakage(s)"
fi
if test "$test_broken" != 0 || test "$test_fixed" != 0; then
test_remaining=$(( $test_count - $test_broken - $test_fixed ))
msg="remaining $test_remaining test(s)"
else
test_remaining=$test_count
msg="$test_count test(s)"
fi
case "$test_failure" in
0)
# Maybe print SKIP message
if test -n "$skip_all" && test $test_count -gt 0; then
error "Can't use skip_all after running some tests"
fi
[ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
if test $test_remaining -gt 0; then
say_color pass "# passed all $msg"
fi
say "1..$test_count$skip_all"
test_eval_ "$final_cleanup"
test -d "$remove_trash" &&
cd "$(dirname "$remove_trash")" &&
rm -rf "$(basename "$remove_trash")"
exit 0 ;;
*)
say_color error "# failed $test_failure among $msg"
say "1..$test_count"
exit 1 ;;
esac
}
# Public: Root directory containing tests. Tests can override this variable,
# e.g. for testing Sharness itself.
: ${SHARNESS_TEST_DIRECTORY:=$(pwd)}
export SHARNESS_TEST_DIRECTORY
# Public: Source directory of test code and sharness library.
# This directory may be different from the directory in which tests are
# being run.
: ${SHARNESS_TEST_SRCDIR:=$(cd $(dirname $0) && pwd)}
export SHARNESS_TEST_SRCDIR
# Public: Build directory that will be added to PATH. By default, it is set to
# the parent directory of SHARNESS_TEST_DIRECTORY.
: ${SHARNESS_BUILD_DIRECTORY:="$SHARNESS_TEST_DIRECTORY/.."}
PATH="$SHARNESS_BUILD_DIRECTORY:$PATH"
export PATH SHARNESS_BUILD_DIRECTORY
# Public: Path to test script currently executed.
SHARNESS_TEST_FILE="$0"
export SHARNESS_TEST_FILE
# Prepare test area.
SHARNESS_TRASH_DIRECTORY="trash directory.$(basename "$SHARNESS_TEST_FILE" ".$SHARNESS_TEST_EXTENSION")"
test -n "$root" && SHARNESS_TRASH_DIRECTORY="$root/$SHARNESS_TRASH_DIRECTORY"
case "$SHARNESS_TRASH_DIRECTORY" in
/*) ;; # absolute path is good
*) SHARNESS_TRASH_DIRECTORY="$SHARNESS_TEST_DIRECTORY/$SHARNESS_TRASH_DIRECTORY" ;;
esac
test "$debug" = "t" || remove_trash="$SHARNESS_TRASH_DIRECTORY"
rm -rf "$SHARNESS_TRASH_DIRECTORY" || {
EXIT_OK=t
echo >&5 "FATAL: Cannot prepare test area"
exit 1
}
#
# Load any extensions in $srcdir/sharness.d/*.sh
#
if test -d "${SHARNESS_TEST_SRCDIR}/sharness.d"
then
for file in "${SHARNESS_TEST_SRCDIR}"/sharness.d/*.sh
do
# Ensure glob was not an empty match:
test -e "${file}" || break
if test -n "$debug"
then
echo >&5 "sharness: loading extensions from ${file}"
fi
. "${file}"
if test $? != 0
then
echo >&5 "sharness: Error loading ${file}. Aborting."
exit 1
fi
done
fi
# Public: Empty trash directory, the test area, provided for each test. The HOME
# variable is set to that directory too.
export SHARNESS_TRASH_DIRECTORY
HOME="$SHARNESS_TRASH_DIRECTORY"
export HOME
mkdir -p "$SHARNESS_TRASH_DIRECTORY" || exit 1
# Use -P to resolve symlinks in our working directory so that the cwd
# in subprocesses like git equals our $PWD (for pathname comparisons).
cd -P "$SHARNESS_TRASH_DIRECTORY" || exit 1
this_test=${SHARNESS_TEST_FILE##*/}
this_test=${this_test%.$SHARNESS_TEST_EXTENSION}
for skp in $SKIP_TESTS; do
case "$this_test" in
$skp)
say_color info >&3 "skipping test $this_test altogether"
skip_all="skip all tests in $this_test"
test_done
esac
done
test -n "$TEST_LONG" && test_set_prereq EXPENSIVE
test -n "$TEST_INTERACTIVE" && test_set_prereq INTERACTIVE
# Make sure this script ends with code 0
:
# vi: set ts=4 sw=4 noet :