minix/tests/bin/ps/t_ps.sh

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# $NetBSD: t_ps.sh,v 1.1 2012/03/17 16:33:11 jruoho Exp $
#
# Copyright (c) 2007 The NetBSD Foundation, Inc.
# 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
#
# the implementation of "ps" to test
: ${TEST_PS:="ps"}
# tab and newline characters
tab="$(printf '\t')"
# nl="$(printf '\n')" doesn't work
nl='
'
#
# Parse the "keywords" file into a load of shell variables
#
setup_keywords()
{
# Set variables representing the header text
# for all normal keywords (except aliases), and
# for regular expressions to match the text in left- or
# right-justified columns.
# For example, head_text_p_cpu="%CPU" head_regexp_p_cpu=" *%CPU".
while read keyword heading flag
do
case "$keyword" in
''|\#*) continue
;;
esac
[ x"$flag" = x"ALIAS" ] && continue
kvar="${keyword}"
case "${keyword}" in
%*) kvar="p_${keyword#%}"
;;
esac
eval head_text_${kvar}=\'"${heading}"\'
case "${flag}" in
'') # right justified
eval head_regexp_${kvar}=\'" *${heading}"\'
;;
LJUST) # left justified
eval head_regexp_${kvar}=\'"${heading} *"\'
;;
*) atf_fail "unknown flag in keywords"
;;
esac
done <"$(atf_get_srcdir)/keywords"
# Now do the aliases.
while read keyword heading flag
do
case "$keyword" in
''|\#*) continue
;;
esac
[ x"$flag" != x"ALIAS" ] && continue
kvar="${keyword}"
avar="${heading}"
case "${keyword}" in
%*) kvar="p_${keyword#%}"
;;
esac
case "${heading}" in
%*) avar="p_${heading#%}"
;;
esac
eval head_text_${kvar}=\"\$head_text_${avar}\"
eval head_regexp_${kvar}=\"\$head_regexp_${avar}\"
done <"$(atf_get_srcdir)/keywords"
# default sets of keywords
default_keywords='pid tty stat time command'
j_keywords='user pid ppid pgid sess jobc state tt time command'
l_keywords='uid pid ppid cpu pri nice vsz rss wchan state tt time command'
s_keywords='uid pid ppid cpu lid nlwp pri nice vsz rss wchan lstate tt time command'
u_keywords='user pid %cpu %mem vsz rss tt state start time command'
v_keywords='pid state time sl re pagein vsz rss lim tsiz %cpu %mem command'
}
# Convert a list of keywords like "pid comm" to a regexp
# like " *PID COMMAND *"
heading_keywords_to_regexp()
{
local keywords="$1"
local regexp
regexp="$(echo "$keywords" | \
sed -E -e 's/\%/p_/g' -e 's/(^| )/\1\$head_regexp_/g')"
eval regexp=\""${regexp}"\"
regexp="^${regexp}\$"
echo "$regexp"
}
#
# Check that a string matches a regexp; use the specified id
# in error or success messages.
#
check_regexp() {
local id="$1" string="$2" regexp="$3"
if ! expr "$string" : "$regexp" >/dev/null
then
atf_fail "${id}: expected [${regexp}], got [${string}]"
false
fi
}
#
# Run "ps $args -p $$"; check that only one line is printed,
# without a preceding header line.
#
check_no_heading_line()
{
local args="$1"
local output="$(eval "${TEST_PS} $args -p $$")"
case "$output" in
*"$nl"*)
local firstline="${output%%${nl}*}"
atf_fail "check_no_heading_line [$args] got [$firstline]"
;;
*)
;;
esac
}
#
# Run "ps $args"; check that the heading matches the expected regexp.
#
check_heading_regexp()
{
args="$1"
regexp="$2"
actual="$( eval "${TEST_PS} $args" | sed -e 1q )"
check_regexp "heading [$args]" "${actual}" "${regexp}"
}
#
# Run "ps $args"; check that the heading matches a regexp constructed
# from the specified keywords.
#
check_heading_keywords()
{
args="$1"
keywords="$2"
check_heading_regexp "$args" "$(heading_keywords_to_regexp "$keywords")"
}
#
# Try several variations on "ps $flag", "ps -$flag", etc.,
# and check that the heading always has the correct keywords.
#
check_heading_variations()
{
flag="$1"
keywords="$2"
for args in "$flag" "-$flag" "-$flag$flag -$flag"; do
check_heading_keywords "$args" "$keywords"
done
}
atf_test_case default_columns
default_columns_head()
{
atf_set "descr" "Checks that the default set of columns is correct" \
"and also check that the columns printed by the -j," \
"-l, -s, -u and -v flags alone are correct"
}
default_columns_body()
{
setup_keywords
check_heading_keywords '' "$default_keywords"
check_heading_variations 'j' "$j_keywords"
check_heading_variations 'l' "$l_keywords"
check_heading_variations 's' "$s_keywords"
check_heading_variations 'u' "$u_keywords"
check_heading_variations 'v' "$v_keywords"
}
atf_test_case minus_O
minus_O_head()
{
atf_set "descr" "Checks that 'ps -O foo' inserts columns just after" \
"the pid column"
}
minus_O_body()
{
setup_keywords
check_heading_keywords '-O %cpu,%mem' \
"$(echo "${default_keywords}" | sed -e 's/pid/pid %cpu %mem/')"
check_heading_keywords '-O %cpu -O %mem' \
"$(echo "${default_keywords}" | sed -e 's/pid/pid %cpu %mem/')"
check_heading_keywords '-O%cpu -O%mem' \
"$(echo "${default_keywords}" | sed -e 's/pid/pid %cpu %mem/')"
}
atf_test_case minus_o
minus_o_head()
{
atf_set "descr" "Checks simple cases of 'ps -o foo' to control which" \
"columns are printed; this does not test header" \
"overriding via 'ps -o foo=BAR'"
}
minus_o_body()
{
setup_keywords
# Keywords for "-o name" override the default display
check_heading_keywords '-o pid,%cpu,%mem' \
"pid %cpu %mem"
check_heading_keywords '-o pid -o %cpu,%mem' \
"pid %cpu %mem"
check_heading_keywords '-opid -o %cpu,%mem' \
"pid %cpu %mem"
# Space works like comma
check_heading_keywords '-opid -o "%cpu %mem"' \
"pid %cpu %mem"
# Check missing pid
check_heading_keywords '-o comm' \
"comm"
# Check pid present but not first
check_heading_keywords '-o comm,pid' \
"comm pid"
}
atf_test_case override_heading_simple
override_heading_simple_head()
{
atf_set "descr" "Tests simple uses of header overriding via" \
"'ps -o foo=BAR'. This does not test columns " \
"with null headings, or headings with embedded" \
"space, ',' or '='."
}
override_heading_simple_body()
{
setup_keywords
check_heading_regexp '-o pid=PPP -o comm' \
'^ *PPP '"${head_text_comm}"'$' # no trailing space
check_heading_regexp '-o pid=PPP -o comm=CCC' \
'^ *PPP CCC$'
check_heading_regexp '-o pid,comm=CCC' \
'^'"${head_regexp_pid}"' CCC$'
check_heading_regexp '-o pid -o comm=CCC' \
'^'"${head_regexp_pid}"' CCC$'
# Check missing pid
check_heading_regexp '-o comm=CCC' \
'^CCC$'
# Check pid present but not first
check_heading_regexp '-o comm=CCC -o pid=PPP' \
'^CCC *PPP$'
check_heading_regexp '-o comm,pid=PPP' \
'^'"${head_regexp_comm}"' *PPP$'
}
atf_test_case override_heading_embedded_specials
override_heading_embedded_specials_head()
{
atf_set "descr" "Tests header overriding with embedded space," \
"',' or '='. Everything after the first '='" \
"is part of the heading."
}
override_heading_embedded_specials_body()
{
setup_keywords
# Check embedded "," or "=" in override header.
check_heading_regexp '-o comm,pid==' \
'^'"${head_regexp_comm}"' *=$'
check_heading_regexp '-o comm,pid=,' \
'^'"${head_regexp_comm}"' *,$'
check_heading_regexp '-o pid=PPP,comm' \
'^ *PPP,comm$' # not like '-o pid=PPP -o comm'
check_heading_regexp '-o pid=PPP,comm=CCC' \
'^ *PPP,comm=CCC$' # not like '-o pid=PPP -o comm=CCC'
check_heading_regexp '-o comm,pid=PPP,QQQ' \
'^'"${head_regexp_comm}"' *PPP,QQQ$'
check_heading_regexp '-o comm,pid=ppid,tty=state' \
'^'"${head_regexp_comm}"' *ppid,tty=state$'
# Check embedded space or tab in override header.
check_heading_regexp '-o comm,pid="PPP QQQ"' \
'^'"${head_regexp_comm}"' *PPP QQQ$'
check_heading_regexp '-o comm,pid="PPP${tab}QQQ"' \
'^'"${head_regexp_comm}"' *PPP'"${tab}"'QQQ$'
}
atf_test_case override_heading_some_null
override_heading_some_null_head()
{
atf_set "descr" "Tests simple uses of null column headings" \
"overriding via 'ps -o foo=BAR -o baz='. This" \
"does not test the case where all columns have" \
"null headings."
}
override_heading_some_null_body()
{
setup_keywords
check_heading_regexp '-o pid=PPP -o comm=' \
'^ *PPP *$'
check_heading_regexp '-o pid= -o comm=CCC' \
'^ * CCC$'
check_heading_regexp '-o pid -o comm=' \
'^'"${head_regexp_pid}"' *$'
# Check missing pid
check_heading_regexp '-o ppid= -o comm=CCC' \
'^ * CCC$'
check_heading_regexp '-o ppid=PPP -o comm=' \
'^ *PPP *$'
# Check pid present but not first
check_heading_regexp '-o comm= -o pid=PPP' \
'^ * PPP$'
check_heading_regexp '-o comm,pid=' \
'^'"${head_regexp_comm}"' *$'
# A field with a null custom heading retains a minimum width
# derived from the default heading. This does not apply
# to a field with a very short (non-null) custom heading.
#
# We choose "holdcnt" as a column whose width is likely to be
# determined entirely by the header width, because the values
# are likely to be very small.
check_heading_regexp '-o holdcnt -o holdcnt -o holdcnt' \
'^HOLDCNT HOLDCNT HOLDCNT$'
check_heading_regexp '-o holdcnt -o holdcnt= -o holdcnt' \
'^HOLDCNT HOLDCNT$'
check_heading_regexp '-o holdcnt -o holdcnt=HH -o holdcnt' \
'^HOLDCNT HH HOLDCNT$'
}
atf_test_case override_heading_all_null
override_heading_all_null_head()
{
atf_set "descr" "Tests the use of 'ps -o foo= -o bar=' (with a" \
"null heading for every column). The heading" \
"should not be printed at all in this case."
}
override_heading_all_null_body()
{
setup_keywords
# A heading with a space is not a null heading,
# so should not be suppressed
check_heading_regexp '-o comm=" "' \
'^ *$'
# Null headings should be suppressed
check_no_heading_line '-o pid= -o comm='
check_no_heading_line '-o pid= -o comm='
# Check missing pid
check_no_heading_line '-o ppid='
check_no_heading_line '-o comm='
check_no_heading_line '-o command='
check_no_heading_line '-o ppid= -o comm='
check_no_heading_line '-o comm= -o ppid='
# Check pid present but not first
check_no_heading_line '-o comm= -o pid='
check_no_heading_line '-o ppid= -o pid= -o command='
}
atf_test_case duplicate_column
duplicate_column_head()
{
atf_set "descr" "Tests the use of -o options to display the" \
"same column more than once"
}
duplicate_column_body()
{
setup_keywords
# two custom headers
check_heading_regexp '-o pid=PPP -o pid=QQQ' \
'^ *PPP *QQQ$'
# one custom header, before and after default header
check_heading_regexp '-o pid=PPP -o pid' \
'^ *PPP '"${head_regexp_pid}"'$'
check_heading_regexp '-o pid -o pid=QQQ' \
'^'"${head_regexp_pid}"' *QQQ$'
# custom headers both before and after default header
check_heading_regexp '-o pid=PPP -o pid -o pid=QQQ' \
'^ *PPP '"${head_regexp_pid}"' *QQQ$'
}
atf_init_test_cases() {
atf_add_test_case default_columns
atf_add_test_case minus_O
atf_add_test_case minus_o
atf_add_test_case override_heading_simple
atf_add_test_case override_heading_embedded_specials
atf_add_test_case override_heading_some_null
atf_add_test_case override_heading_all_null
atf_add_test_case duplicate_column
}