From: Zifei Tong Date: Wed, 24 Jul 2013 17:14:14 +0000 (-0400) Subject: Cleanup tests (2nd commit) X-Git-Tag: v2.3.0-rc2~14 X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=42f209e98d68936df04ec947a12e684155ce7cfe;p=lttng-ust.git Cleanup tests (2nd commit) Move TAP related code to tests/utils. Remove scripts only used by obsolete tests. [ Mathieu : my previous commit was missing some files. ] Signed-off-by: Zifei Tong Signed-off-by: Mathieu Desnoyers --- diff --git a/tests/utils/Makefile.am b/tests/utils/Makefile.am new file mode 100644 index 00000000..24c0bb87 --- /dev/null +++ b/tests/utils/Makefile.am @@ -0,0 +1,3 @@ +noinst_LIBRARIES = libtap.a +libtap_a_SOURCES = tap.c tap.h +dist_noinst_SCRIPTS = tap.sh diff --git a/tests/utils/tap.c b/tests/utils/tap.c new file mode 100644 index 00000000..8bf72f6f --- /dev/null +++ b/tests/utils/tap.c @@ -0,0 +1,433 @@ +/*- + * Copyright (c) 2004 Nik Clayton + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#define _GNU_SOURCE +#include +#include +#include +#include + +#include "tap.h" + +static int no_plan = 0; +static int skip_all = 0; +static int have_plan = 0; +static unsigned int test_count = 0; /* Number of tests that have been run */ +static unsigned int e_tests = 0; /* Expected number of tests to run */ +static unsigned int failures = 0; /* Number of tests that failed */ +static char *todo_msg = NULL; +static char *todo_msg_fixed = "libtap malloc issue"; +static int todo = 0; +static int test_died = 0; + +/* Encapsulate the pthread code in a conditional. In the absence of + libpthread the code does nothing */ +#ifdef HAVE_LIBPTHREAD +#include +static pthread_mutex_t M = PTHREAD_MUTEX_INITIALIZER; +# define LOCK pthread_mutex_lock(&M); +# define UNLOCK pthread_mutex_unlock(&M); +#else +# define LOCK +# define UNLOCK +#endif + +static void _expected_tests(unsigned int); +static void _tap_init(void); +static void _cleanup(void); + +/* + * Generate a test result. + * + * ok -- boolean, indicates whether or not the test passed. + * test_name -- the name of the test, may be NULL + * test_comment -- a comment to print afterwards, may be NULL + */ +unsigned int +_gen_result(int ok, const char *func, char *file, unsigned int line, + char *test_name, ...) +{ + va_list ap; + char *local_test_name = NULL; + char *c; + int name_is_digits; + + LOCK; + + test_count++; + + /* Start by taking the test name and performing any printf() + expansions on it */ + if(test_name != NULL) { + va_start(ap, test_name); + if (vasprintf(&local_test_name, test_name, ap) == -1) { + local_test_name = NULL; + } + va_end(ap); + + /* Make sure the test name contains more than digits + and spaces. Emit an error message and exit if it + does */ + if(local_test_name) { + name_is_digits = 1; + for(c = local_test_name; *c != '\0'; c++) { + if(!isdigit(*c) && !isspace(*c)) { + name_is_digits = 0; + break; + } + } + + if(name_is_digits) { + diag(" You named your test '%s'. You shouldn't use numbers for your test names.", local_test_name); + diag(" Very confusing."); + } + } + } + + if(!ok) { + printf("not "); + failures++; + } + + printf("ok %d", test_count); + + if(test_name != NULL) { + printf(" - "); + + /* Print the test name, escaping any '#' characters it + might contain */ + if(local_test_name != NULL) { + flockfile(stdout); + for(c = local_test_name; *c != '\0'; c++) { + if(*c == '#') + fputc('\\', stdout); + fputc((int)*c, stdout); + } + funlockfile(stdout); + } else { /* vasprintf() failed, use a fixed message */ + printf("%s", todo_msg_fixed); + } + } + + /* If we're in a todo_start() block then flag the test as being + TODO. todo_msg should contain the message to print at this + point. If it's NULL then asprintf() failed, and we should + use the fixed message. + + This is not counted as a failure, so decrement the counter if + the test failed. */ + if(todo) { + printf(" # TODO %s", todo_msg ? todo_msg : todo_msg_fixed); + if(!ok) + failures--; + } + + printf("\n"); + + if(!ok) { + if(getenv("HARNESS_ACTIVE") != NULL) + fputs("\n", stderr); + + diag(" Failed %stest (%s:%s() at line %d)", + todo ? "(TODO) " : "", file, func, line); + } + free(local_test_name); + + UNLOCK; + + /* We only care (when testing) that ok is positive, but here we + specifically only want to return 1 or 0 */ + return ok ? 1 : 0; +} + +/* + * Initialise the TAP library. Will only do so once, however many times it's + * called. + */ +void +_tap_init(void) +{ + static int run_once = 0; + + if(!run_once) { + atexit(_cleanup); + + /* stdout needs to be unbuffered so that the output appears + in the same place relative to stderr output as it does + with Test::Harness */ + setbuf(stdout, 0); + run_once = 1; + } +} + +/* + * Note that there's no plan. + */ +int +plan_no_plan(void) +{ + + LOCK; + + _tap_init(); + + if(have_plan != 0) { + fprintf(stderr, "You tried to plan twice!\n"); + test_died = 1; + UNLOCK; + exit(255); + } + + have_plan = 1; + no_plan = 1; + + UNLOCK; + + return 1; +} + +/* + * Note that the plan is to skip all tests + */ +int +plan_skip_all(char *reason) +{ + + LOCK; + + _tap_init(); + + skip_all = 1; + + printf("1..0"); + + if(reason != NULL) + printf(" # Skip %s", reason); + + printf("\n"); + + UNLOCK; + + exit(0); +} + +/* + * Note the number of tests that will be run. + */ +int +plan_tests(unsigned int tests) +{ + + LOCK; + + _tap_init(); + + if(have_plan != 0) { + fprintf(stderr, "You tried to plan twice!\n"); + test_died = 1; + UNLOCK; + exit(255); + } + + if(tests == 0) { + fprintf(stderr, "You said to run 0 tests! You've got to run something.\n"); + test_died = 1; + UNLOCK; + exit(255); + } + + have_plan = 1; + + _expected_tests(tests); + + UNLOCK; + + return e_tests; +} + +unsigned int +diag(char *fmt, ...) +{ + va_list ap; + + fputs("# ", stderr); + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + + fputs("\n", stderr); + + return 0; +} + +void +_expected_tests(unsigned int tests) +{ + + printf("1..%d\n", tests); + e_tests = tests; +} + +int +skip(unsigned int n, char *fmt, ...) +{ + va_list ap; + char *skip_msg = NULL; + + LOCK; + + va_start(ap, fmt); + if (asprintf(&skip_msg, fmt, ap) == -1) { + skip_msg = NULL; + } + va_end(ap); + + while(n-- > 0) { + test_count++; + printf("ok %d # skip %s\n", test_count, + skip_msg != NULL ? + skip_msg : "libtap():malloc() failed"); + } + + free(skip_msg); + + UNLOCK; + + return 1; +} + +void +todo_start(char *fmt, ...) +{ + va_list ap; + + LOCK; + + va_start(ap, fmt); + if (vasprintf(&todo_msg, fmt, ap) == -1) { + todo_msg = NULL; + } + va_end(ap); + + todo = 1; + + UNLOCK; +} + +void +todo_end(void) +{ + + LOCK; + + todo = 0; + free(todo_msg); + + UNLOCK; +} + +int +exit_status(void) +{ + int r; + + LOCK; + + /* If there's no plan, just return the number of failures */ + if(no_plan || !have_plan) { + UNLOCK; + return failures; + } + + /* Ran too many tests? Return the number of tests that were run + that shouldn't have been */ + if(e_tests < test_count) { + r = test_count - e_tests; + UNLOCK; + return r; + } + + /* Return the number of tests that failed + the number of tests + that weren't run */ + r = failures + e_tests - test_count; + UNLOCK; + + return r; +} + +/* + * Cleanup at the end of the run, produce any final output that might be + * required. + */ +void +_cleanup(void) +{ + + LOCK; + + /* If plan_no_plan() wasn't called, and we don't have a plan, + and we're not skipping everything, then something happened + before we could produce any output */ + if(!no_plan && !have_plan && !skip_all) { + diag("Looks like your test died before it could output anything."); + UNLOCK; + return; + } + + if(test_died) { + diag("Looks like your test died just after %d.", test_count); + UNLOCK; + return; + } + + + /* No plan provided, but now we know how many tests were run, and can + print the header at the end */ + if(!skip_all && (no_plan || !have_plan)) { + printf("1..%d\n", test_count); + } + + if((have_plan && !no_plan) && e_tests < test_count) { + diag("Looks like you planned %d %s but ran %d extra.", + e_tests, e_tests == 1 ? "test" : "tests", test_count - e_tests); + UNLOCK; + return; + } + + if((have_plan || !no_plan) && e_tests > test_count) { + diag("Looks like you planned %d %s but only ran %d.", + e_tests, e_tests == 1 ? "test" : "tests", test_count); + UNLOCK; + return; + } + + if(failures) + diag("Looks like you failed %d %s of %d.", + failures, failures == 1 ? "test" : "tests", test_count); + + UNLOCK; +} diff --git a/tests/utils/tap.h b/tests/utils/tap.h new file mode 100644 index 00000000..0f059430 --- /dev/null +++ b/tests/utils/tap.h @@ -0,0 +1,89 @@ +/*- + * Copyright (c) 2004 Nik Clayton + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* '## __VA_ARGS__' is a gcc'ism. C99 doesn't allow the token pasting + and requires the caller to add the final comma if they've ommitted + the optional arguments */ +#ifdef __GNUC__ +# define ok(e, test, ...) ((e) ? \ + _gen_result(1, __func__, __FILE__, __LINE__, \ + test, ## __VA_ARGS__) : \ + _gen_result(0, __func__, __FILE__, __LINE__, \ + test, ## __VA_ARGS__)) + +# define ok1(e) ((e) ? \ + _gen_result(1, __func__, __FILE__, __LINE__, "%s", #e) : \ + _gen_result(0, __func__, __FILE__, __LINE__, "%s", #e)) + +# define pass(test, ...) ok(1, test, ## __VA_ARGS__); +# define fail(test, ...) ok(0, test, ## __VA_ARGS__); + +# define skip_start(test, n, fmt, ...) \ + do { \ + if((test)) { \ + skip(n, fmt, ## __VA_ARGS__); \ + continue; \ + } +#elif __STDC_VERSION__ >= 199901L /* __GNUC__ */ +# define ok(e, ...) ((e) ? \ + _gen_result(1, __func__, __FILE__, __LINE__, \ + __VA_ARGS__) : \ + _gen_result(0, __func__, __FILE__, __LINE__, \ + __VA_ARGS__)) + +# define ok1(e) ((e) ? \ + _gen_result(1, __func__, __FILE__, __LINE__, "%s", #e) : \ + _gen_result(0, __func__, __FILE__, __LINE__, "%s", #e)) + +# define pass(...) ok(1, __VA_ARGS__); +# define fail(...) ok(0, __VA_ARGS__); + +# define skip_start(test, n, ...) \ + do { \ + if((test)) { \ + skip(n, __VA_ARGS__); \ + continue; \ + } +#else /* __STDC_VERSION__ */ +# error "Needs gcc or C99 compiler for variadic macros." +#endif /* __STDC_VERSION__ */ + +#define skip_end() } while(0); + +unsigned int _gen_result(int, const char *, char *, unsigned int, char *, ...); + +int plan_no_plan(void); +int plan_skip_all(char *); +int plan_tests(unsigned int); + +unsigned int diag(char *, ...); + +int skip(unsigned int, char *, ...); + +void todo_start(char *, ...); +void todo_end(void); + +int exit_status(void); diff --git a/tests/utils/tap.sh b/tests/utils/tap.sh new file mode 100755 index 00000000..24ac1aa2 --- /dev/null +++ b/tests/utils/tap.sh @@ -0,0 +1,456 @@ +#!/bin/bash +# +# Copyright 2010 Patrick LeBoutillier +# +# 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 3 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 . + + +_version='1.01' + +_plan_set=0 +_no_plan=0 +_skip_all=0 +_test_died=0 +_expected_tests=0 +_executed_tests=0 +_failed_tests=0 +TODO= + + +usage(){ + cat <<'USAGE' +tap-functions: A TAP-producing BASH library + +PLAN: + plan_no_plan + plan_skip_all [REASON] + plan_tests NB_TESTS + +TEST: + ok RESULT [NAME] + okx COMMAND + is RESULT EXPECTED [NAME] + isnt RESULT EXPECTED [NAME] + like RESULT PATTERN [NAME] + unlike RESULT PATTERN [NAME] + pass [NAME] + fail [NAME] + +SKIP: + skip [CONDITION] [REASON] [NB_TESTS=1] + + skip $feature_not_present "feature not present" 2 || { + is $a "a" + is $b "b" + } + +TODO: + Specify TODO mode by setting $TODO: + TODO="not implemented yet" + ok $result "some not implemented test" + unset TODO + +OTHER: + diag MSG + +EXAMPLE: + #!/bin/bash + + . tap-functions + + plan_tests 7 + + me=$USER + is $USER $me "I am myself" + like $HOME $me "My home is mine" + like "`id`" $me "My id matches myself" + + /bin/ls $HOME 1>&2 + ok $? "/bin/ls $HOME" + # Same thing using okx shortcut + okx /bin/ls $HOME + + [[ "`id -u`" != "0" ]] + i_am_not_root=$? + skip $i_am_not_root "Must be root" || { + okx ls /root + } + + TODO="figure out how to become root..." + okx [ "$HOME" == "/root" ] + unset TODO +USAGE + exit +} + +opt= +set_u= +while getopts ":sx" opt ; do + case $_opt in + u) set_u=1 ;; + *) usage ;; + esac +done +shift $(( OPTIND - 1 )) +# Don't allow uninitialized variables if requested +[[ -n "$set_u" ]] && set -u +unset opt set_u + +# Used to call _cleanup on shell exit +trap _exit EXIT + + +plan_no_plan(){ + (( _plan_set != 0 )) && "You tried to plan twice!" + + _plan_set=1 + _no_plan=1 + + return 0 +} + + +plan_skip_all(){ + local reason=${1:-''} + + (( _plan_set != 0 )) && _die "You tried to plan twice!" + + _print_plan 0 "Skip $reason" + + _skip_all=1 + _plan_set=1 + _exit 0 + + return 0 +} + +plan_tests(){ + local tests=${1:?} + + (( _plan_set != 0 )) && _die "You tried to plan twice!" + (( tests == 0 )) && _die "You said to run 0 tests! You've got to run something." + + _print_plan $tests + _expected_tests=$tests + _plan_set=1 + + return $tests +} + + +_print_plan(){ + local tests=${1:?} + local directive=${2:-''} + + echo -n "1..$tests" + [[ -n "$directive" ]] && echo -n " # $directive" + echo +} + + +pass(){ + local name=$1 + ok 0 "$name" +} + + +fail(){ + local name=$1 + ok 1 "$name" +} + +# This is the workhorse method that actually +# prints the tests result. +ok(){ + local result=${1:?} + local name=${2:-''} + + (( _plan_set == 0 )) && _die "You tried to run a test without a plan! Gotta have a plan." + + _executed_tests=$(( $_executed_tests + 1 )) + + if [[ -n "$name" ]] ; then + if _matches "$name" "^[0-9]+$" ; then + diag " You named your test '$name'. You shouldn't use numbers for your test names." + diag " Very confusing." + fi + fi + + if (( result != 0 )) ; then + echo -n "not " + _failed_tests=$(( _failed_tests + 1 )) + fi + echo -n "ok $_executed_tests" + + if [[ -n "$name" ]] ; then + local ename=${name//\#/\\#} + echo -n " - $ename" + fi + + if [[ -n "$TODO" ]] ; then + echo -n " # TODO $TODO" ; + if (( result != 0 )) ; then + _failed_tests=$(( _failed_tests - 1 )) + fi + fi + + echo + if (( result != 0 )) ; then + local file='tap-functions' + local func= + local line= + + local i=0 + local bt=$(caller $i) + while _matches "$bt" "tap-functions$" ; do + i=$(( $i + 1 )) + bt=$(caller $i) + done + local backtrace= + eval $(caller $i | (read line func file ; echo "backtrace=\"$file:$func() at line $line.\"")) + + local t= + [[ -n "$TODO" ]] && t="(TODO) " + + if [[ -n "$name" ]] ; then + diag " Failed ${t}test '$name'" + diag " in $backtrace" + else + diag " Failed ${t}test in $backtrace" + fi + fi + + return $result +} + + +okx(){ + local command="$@" + + local line= + diag "Output of '$command':" + "$@" | while read line ; do + diag "$line" + done + ok ${PIPESTATUS[0]} "$command" +} + + +_equals(){ + local result=${1:?} + local expected=${2:?} + + if [[ "$result" == "$expected" ]] ; then + return 0 + else + return 1 + fi +} + + +# Thanks to Aaron Kangas for the patch to allow regexp matching +# under bash < 3. + _bash_major_version=${BASH_VERSION%%.*} +_matches(){ + local result=${1:?} + local pattern=${2:?} + + if [[ -z "$result" || -z "$pattern" ]] ; then + return 1 + else + if (( _bash_major_version >= 3 )) ; then + [[ "$result" =~ "$pattern" ]] + else + echo "$result" | egrep -q "$pattern" + fi + fi +} + + +_is_diag(){ + local result=${1:?} + local expected=${2:?} + + diag " got: '$result'" + diag " expected: '$expected'" +} + + +is(){ + local result=${1:?} + local expected=${2:?} + local name=${3:-''} + + _equals "$result" "$expected" + (( $? == 0 )) + ok $? "$name" + local r=$? + (( r != 0 )) && _is_diag "$result" "$expected" + return $r +} + + +isnt(){ + local result=${1:?} + local expected=${2:?} + local name=${3:-''} + + _equals "$result" "$expected" + (( $? != 0 )) + ok $? "$name" + local r=$? + (( r != 0 )) && _is_diag "$result" "$expected" + return $r +} + + +like(){ + local result=${1:?} + local pattern=${2:?} + local name=${3:-''} + + _matches "$result" "$pattern" + (( $? == 0 )) + ok $? "$name" + local r=$? + (( r != 0 )) && diag " '$result' doesn't match '$pattern'" + return $r +} + + +unlike(){ + local result=${1:?} + local pattern=${2:?} + local name=${3:-''} + + _matches "$result" "$pattern" + (( $? != 0 )) + ok $? "$name" + local r=$? + (( r != 0 )) && diag " '$result' matches '$pattern'" + return $r +} + + +skip(){ + local condition=${1:?} + local reason=${2:-''} + local n=${3:-1} + + if (( condition == 0 )) ; then + local i= + for (( i=0 ; i<$n ; i++ )) ; do + _executed_tests=$(( _executed_tests + 1 )) + echo "ok $_executed_tests # skip: $reason" + done + return 0 + else + return + fi +} + + +diag(){ + local msg=${1:?} + + if [[ -n "$msg" ]] ; then + echo "# $msg" + fi + + return 1 +} + + +_die(){ + local reason=${1:-''} + + echo "$reason" >&2 + _test_died=1 + _exit 255 +} + + +BAIL_OUT(){ + local reason=${1:-''} + + echo "Bail out! $reason" >&2 + _exit 255 +} + + +_cleanup(){ + local rc=0 + + if (( _plan_set == 0 )) ; then + diag "Looks like your test died before it could output anything." + return $rc + fi + + if (( _test_died != 0 )) ; then + diag "Looks like your test died just after $_executed_tests." + return $rc + fi + + if (( _skip_all == 0 && _no_plan != 0 )) ; then + _print_plan $_executed_tests + fi + + local s= + if (( _no_plan == 0 && _expected_tests < _executed_tests )) ; then + s= ; (( _expected_tests > 1 )) && s=s + local extra=$(( _executed_tests - _expected_tests )) + diag "Looks like you planned $_expected_tests test$s but ran $extra extra." + rc=1 ; + fi + + if (( _no_plan == 0 && _expected_tests > _executed_tests )) ; then + s= ; (( _expected_tests > 1 )) && s=s + diag "Looks like you planned $_expected_tests test$s but only ran $_executed_tests." + fi + + if (( _failed_tests > 0 )) ; then + s= ; (( _failed_tests > 1 )) && s=s + diag "Looks like you failed $_failed_tests test$s of $_executed_tests." + fi + + return $rc +} + + +_exit_status(){ + if (( _no_plan != 0 || _plan_set == 0 )) ; then + return $_failed_tests + fi + + if (( _expected_tests < _executed_tests )) ; then + return $(( _executed_tests - _expected_tests )) + fi + + return $(( _failed_tests + ( _expected_tests - _executed_tests ))) +} + + +_exit(){ + local rc=${1:-''} + if [[ -z "$rc" ]] ; then + _exit_status + rc=$? + fi + + _cleanup + local alt_rc=$? + (( alt_rc != 0 )) && rc=$alt_rc + trap - EXIT + exit $rc +}