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#!/bin/bash
#
# Copyright 2010 Patrick LeBoutillier <patrick.leboutillier@gmail.com>
#
# 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
_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:-'<unspecified error>'}
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
}