autoconf/tests/autotest.at

#							-*- Autotest -*-

AT_BANNER([Autotest.])

# Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation,
# Inc.
#
# 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, 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.

# AT_CHECK_AT_PREP(NAME, SUITE-CODE, [STATUS = 0], [STDOUT], [STDERR],
#                  [DIR = .])
# --------------------------------------------------------------------
# Create a new testsuite named NAME that runs a minimal Autotest test suite,
# SUITE-CODE.  Do not use `testsuite' for NAME, or the log file it generates
# will overwrite the log that the Autoconf test produces when managing
# this test case.  STATUS, STDOUT, and STDERR pass directly to the AT_CHECK
# that compiles the testsuite.  DIR can specify a particular subdirectory
# where the testsuite should live.
m4_define([AT_CHECK_AT_PREP],
[AT_KEYWORDS([autotest])dnl
dnl overquote AT_dir, to make it easier to use
m4_pushdef([AT_dir], m4_ifval([$6], [[[$6]]], [.]))dnl
dnl
AT_CAPTURE_FILE([$1.log])dnl
dnl
AT_DATA(AT_dir[/package.m4],
[[m4_define([AT@&t@_PACKAGE_NAME],      [GNU Nonsense])
m4_define([AT@&t@_PACKAGE_TARNAME],   [nonsense])
m4_define([AT@&t@_PACKAGE_VERSION],   [1.0])
m4_define([AT@&t@_PACKAGE_STRING],    [GNU Nonsense 1.0])
m4_define([AT@&t@_PACKAGE_BUGREPORT], [bug-autoconf@gnu.org])
]])
dnl
AT_DATA(AT_dir[/$1.at], m4_bpatsubst([[$2]], [AT_], [AT@&t@_]))
m4_ifval([$6], [(cd AT_dir])
AT_CHECK_AUTOM4TE([--language=autotest -o $1 $1.at], [$3], [$4], [$5])
m4_ifval([$6], [)])
m4_popdef([AT_dir])dnl
]) # AT_CHECK_AT_PREP

# AT_CHECK_AT(TITLE, SUITE-CODE, [XFAIL-CONDITION], [STATUS = 0],
#             [STDOUT = ignore], STDERR, [POST-TEST-CODE], [SUITE-ARGS])
# ----------------------------------------------------------------------
# Create a new test named TITLE that runs a minimal Autotest test suite,
# SUITE-CODE with additional SUITE-ARGS, once without and once with
# '-v -x' added.  Call AT_XFAIL_IF with XFAIL-CONDITION.  Pass STDERR
# directly to the AT_CHECK that calls the minimal test suite, STDOUT to
# the AT_CHECK without '-v -x'; ignore stdout for the latter.
# Run POST-TEST-CODE at the top level after the micro-suite has been run.
m4_define([AT_CHECK_AT],
[AT_SETUP([$1])
AT_XFAIL_IF([$3])
AT_CHECK_AT_PREP([micro-suite], [$2])

AT_CHECK([$CONFIG_SHELL ./micro-suite $8],       m4_default([$4], 0),
         m4_default([$5], [ignore]), [$6])
AT_CHECK([$CONFIG_SHELL ./micro-suite -v -x $8], m4_default([$4], 0),
         [ignore], [$6])
$7
AT_CLEANUP
])# AT_CHECK_AT

# AT_CHECK_AT_TEST(TITLE, SUITE-SNIPPET, ...)
# -----------------------------------------------------------------------
# Wrapper for AT_CHECK_AT that surrounds SUITE-SNIPPET with a boilerplate
# AT_INIT, AT_SETUP, and AT_CLEANUP and passes other arguments verbatim.
m4_define([AT_CHECK_AT_TEST],
[AT_CHECK_AT([$1],
[[
AT_INIT([artificial test suite])
AT_SETUP([my only test])
$2
AT_CLEANUP
]], m4_shift2($@))]) # AT_CHECK_AT_TEST

# AT_CHECK_AT_SYNTAX(TITLE, SUITE, MESSAGE)
# -----------------------------------------
# Create a test named TITLE that tries compiling SUITE with syntax
# errors with autotest.  Expect a failed compilation, and grep for
# MESSAGE occuring within the error output.
m4_define([AT_CHECK_AT_SYNTAX],
[AT_SETUP([$1])
AT_CHECK_AT_PREP([micro-suite], [$2], [1], [], [stderr])
AT_CHECK([grep '$3' stderr], [0], [ignore])
AT_CLEANUP
])# AT_CHECK_AT_SYNTAX


# AT_NO_CMDSUBST
# --------------
m4_define([AT_NO_CMDSUBST],
[if (eval 'foo=$(echo bar) && test "$foo" = bar') >/dev/null 2>&1; then ]dnl
[false; else :; fi])

# AT_CHECK_EGREP(PATTERN, STATUS, COUNT)
# --------------------------------------
# Run grep -E, counting how many times PATTERN occurs in the file 'stdout',
# and expecting exit STATUS and output COUNT.
m4_define([AT_CHECK_EGREP],
[AT_CHECK([$EGREP -c '$1' stdout], [$2], [$3
], [ignore])
])


## ------------------ ##
## Empty test suite.  ##
## ------------------ ##

# This is not a sensible thing to do, but the user should not get an unhelpful
# error message.
AT_CHECK_AT([Empty test suite],
[[AT_INIT([empty test suite])
]])

AT_CHECK_AT([Banner-only test suite],
[[AT_INIT([empty test suite])
AT_BANNER([banner])
]])

# Next level of emptiness.
AT_CHECK_AT_TEST([Empty test], [])

# And finally, an empty check should not cause a syntax error.
AT_CHECK_AT_TEST([Empty check], [AT_CHECK])

# Check for sensible error messages for common bugs.
AT_CHECK_AT_SYNTAX([AT@&t@_SETUP without AT@&t@_INIT],
[[AT_SETUP([only test])
AT_CHECK([:])
AT_CLEANUP
]], [AT@&t@_SETUP: missing AT@&t@_INIT detected])

AT_CHECK_AT_SYNTAX([AT@&t@_BANNER without AT@&t@_INIT],
[[AT_BANNER([just a banner])
]], [AT@&t@_BANNER: missing AT@&t@_INIT detected])

AT_CHECK_AT_SYNTAX([AT@&t@_CLEANUP without AT@&t@_INIT],
[[AT_CLEANUP
]], [AT@&t@_CLEANUP: missing AT@&t@_INIT detected])

AT_CHECK_AT_SYNTAX([Missing AT@&t@_CLEANUP],
[[AT_INIT([incomplete test suite])
AT_SETUP([only test])
AT_CHECK([:])
]], [missing AT@&t@_CLEANUP detected])

AT_CHECK_AT_SYNTAX([AT@&t@_CHECK without AT@&t@_SETUP],
[[AT_INIT([incomplete test suite])
AT_CHECK([:])
]], [AT@&t@_CHECK: missing AT@&t@_SETUP detected])

AT_CHECK_AT_SYNTAX([AT@&t@_DATA without AT@&t@_SETUP],
[[AT_INIT([incomplete test suite])
AT_DATA([file])
]], [AT@&t@_DATA: missing AT@&t@_SETUP detected])

AT_CHECK_AT_SYNTAX([AT@&t@_XFAIL_IF without AT@&t@_SETUP],
[[AT_INIT([incomplete test suite])
AT_XFAIL_IF([:])
]], [AT@&t@_XFAIL_IF: missing AT@&t@_SETUP detected])

AT_CHECK_AT_SYNTAX([AT@&t@_KEYWORDS without AT@&t@_SETUP],
[[AT_INIT([incomplete test suite])
AT_KEYWORDS([keyword])
]], [AT@&t@_KEYWORDS: missing AT@&t@_SETUP detected])

AT_CHECK_AT_SYNTAX([AT@&t@_CLEANUP without AT@&t@_SETUP],
[[AT_INIT([incomplete test suite])
AT_CLEANUP
]], [AT@&t@_CLEANUP: missing AT@&t@_SETUP detected])

AT_CHECK_AT_SYNTAX([AT@&t@_BANNER inside AT@&t@_SETUP],
[[AT_INIT([incomplete test suite])
AT_SETUP([only test])
AT_BANNER([banner])
AT_CHECK([:])
AT_CLEANUP
]], [AT@&t@_BANNER: nested AT@&t@_SETUP detected])

AT_CHECK_AT_SYNTAX([AT@&t@_SETUP inside AT@&t@_SETUP],
[[AT_INIT([incomplete test suite])
AT_SETUP([only test])
 AT_SETUP([nested test])
 AT_CHECK([:])
 AT_CLEANUP
AT_CHECK([:])
AT_CLEANUP
]], [AT@&t@_SETUP: nested AT@&t@_SETUP detected])

AT_CHECK_AT_SYNTAX([Multiple AT@&t@_INIT],
[[AT_INIT([[suite, take one]])
AT_INIT([repeat])
]], [AT@&t@_INIT: invoked multiple times])

# Check for tested programs.  autoconf should only appear once.
AT_CHECK_AT([Tested programs],
[[AT_INIT([programs test suite])
AT_TESTED([autoconf autom4te])
AT_TESTED([autoconf])
]], [], [], [], [],
[AT_CHECK([[sed -n 's|.*/\([^ /]* --version\)|\1|p' micro-suite.log]], [],
[[autoconf --version
autom4te --version
]])])

AT_CHECK_AT([Startup error messages],
[[AT_INIT([[suite]])
AT_SETUP([only test])
AT_CHECK([:])
AT_CLEANUP
]], [], [], [], [],
[AT_CHECK([sed -n '/exec AS_MESSAGE_LOG_FD/q; />&AS_MESSAGE_LOG_FD/p' < micro-suite])])

## ----------------------------------------------------- ##
## Newlines and command substitutions in test commands.  ##
## ----------------------------------------------------- ##

AT_CHECK_AT_TEST([Truth],
  [AT_CHECK([:], 0, [], [])])

AT_CHECK_AT_TEST([Fallacy],
  [AT_CHECK([false], [], [], [])],
  [], [1], [], [ignore],
  [AT_CHECK([grep failed micro-suite.log], [], [ignore])])

AT_CHECK_AT_TEST([Skip],
  [AT_CHECK([exit 77], 0, [], [])],
  [], [], [], [],
  [AT_CHECK([grep skipped micro-suite.log], [], [ignore])])

AT_CHECK_AT_TEST([errexit],
  [AT_CHECK([false])
   AT_CLEANUP
   AT_SETUP([test that should not be run])
   AT_CHECK([:])],
  [], [1], [stdout], [stderr],
  [AT_CHECK([test -f micro-suite.log], [1])
   touch micro-suite.log # shut up AT_CAPTURE_FILE.
   AT_CHECK([grep "should not be run" stdout], [1])
   AT_CHECK([grep "1 .* inhibited subsequent" stderr], [], [ignore])],
  [--errexit])

AT_CHECK_AT_TEST([Literal multiline command],
  [AT_CHECK([echo Auto'
'conf], 0, [Auto
conf
], [])])

AT_CHECK_AT_TEST([Multiline parameter expansion],
  [FOO='one
two'
   AT_CHECK([echo "$FOO"], 0, [one
two
], [])])

AT_CHECK_AT_TEST([Backquote command substitution],
  [AT_CHECK([echo `echo hi`], 0, [hi
], [])])


AT_CHECK_AT_TEST([Multiline backquote command substitution],
  [AT_DATA([myfile],[foo
bar
])
   AT_CHECK([echo "`cat myfile`"], 0, [foo
bar
], [])])

AT_CHECK_AT_TEST([Parenthetical command substitution],
  [AT_CHECK([echo $(echo hi)], 0, [hi
], [])],
  [AT_NO_CMDSUBST])

AT_CHECK_AT_TEST([Multiline parenthetical command substitution],
  [AT_DATA([myfile],[foo
bar
])
   AT_CHECK([echo "$(cat myfile)"], 0, [foo
bar
], [])],
  [AT_NO_CMDSUBST])


## ------------------------- ##
## ${...} in test commands.  ##
## ------------------------- ##

# If this invalid parameter expansion capsizes the test suite, the entire
# AT_SETUP ... AT_CLEANUP subshell will exit, and the commands it runs will
# appear to have succeeded.  Therefore, we verify a failing test case.

AT_CHECK_AT_TEST([Invalid brace-enclosed parameter expansion],
  [AT_CHECK([echo '${=invalid}'], 0, [wrong])], [false], 1, ignore, ignore)


## ---------------------------- ##
## M4 macros in test commands.  ##
## ---------------------------- ##

# The last paragaph in the comment above _AT_DECIDE_TRACEABLE illustrates why
# this test fails (except with Korn shell-style quoting $'foo\nbar').
AT_CHECK_AT_TEST([Multiline command from M4 expansion],
  [m4_define([GNU], ['foo
bar'])
   AT_CHECK([echo GNU], 0, [foo
bar
], [])], [case `( set -x; echo 'foo
bar') 2>&1` in *\$\'foo\\nbar\'*) false;; *) :;; esac])

AT_CHECK_AT_TEST([Double-M4-quoted command],
  [m4_define([GNU], ['foo
bar'])
   AT_CHECK([[echo GNU]], 0, [[GNU
]], [])])


## -------------------------------------- ##
## Backslash-<newline> in test commands.  ##
## -------------------------------------- ##

AT_CHECK_AT_TEST([BS-newline in command],
  [AT_CHECK([echo Auto"\
"conf], 0, [Autoconf
], [])])

AT_CHECK_AT_TEST([^BS-newline in command],
  [AT_CHECK([\
echo GNU], 0, [GNU
], [])])

AT_CHECK_AT_TEST([BSx641-newline in command],
  [AT_CHECK([printf '%s\n' Auto"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
"conf], 0, [Auto\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\conf
], [])])

AT_CHECK_AT_TEST([BS-BS-newline in command],
  [AT_CHECK([printf '%s\n' Auto"\\
"conf], 0, [Auto\
conf
], [])])

# A `^BS-BS-newline in command' test will run a command named `\'.  No, thanks.

AT_CHECK_AT_TEST([BSx640-newline in command],
  [AT_CHECK([printf '%s\n' Auto"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
"conf], 0, [Auto\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
conf
], [])])

# This command has both escaped and unescaped newlines.
AT_CHECK_AT_TEST([Newline-CODE-BS-newline in command],
  [AT_CHECK([printf '%s\n' Auto'
'co\
nf], 0, [Auto
conf
], [])])

AT_CHECK_AT_TEST([Single-quote-BS-newline in command],
  [AT_CHECK([printf '%s\n' Auto'\
'conf], 0, [Auto\
conf
], [])])

AT_CHECK_AT_TEST([Single-quote-newline-BS-newline in command],
  [AT_CHECK([printf '%s\n' Auto'
\
'conf], 0, [Auto
\
conf
], [])])


## ----------------- ##
## Input from stdin. ##
## ----------------- ##

AT_SETUP([Input from stdin])

AT_CHECK_AT_PREP([micro-suite],
[[AT_INIT
AT_SETUP([please enter hello<RETURN><EOF>])
AT_CHECK([cat], [], [hello
])
AT_CLEANUP
]])

AT_CHECK([echo hello | $CONFIG_SHELL ./micro-suite], [], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite </dev/null], [1], [ignore], [ignore])

AT_CLEANUP


## ------------------------------- ##
## Funny characters in test names. ##
## ------------------------------- ##

# AT_CHECK_AT_TITLE(TITLE, TITLE-TO-TEST, EXPANDED-TITLE-TO-TEST
#                   [XFAIL-CONDITION], [COLUMN = 53])
# ---------------------------------------------------------------
# Create a new test named TITLE that runs an Autotest test suite
# comprised of a trivial test named TITLE-TO-TEST, which expands
# to EXPANDED-TITLE-TO-TEST.  XFAIL-CONDITION passes verbatim to
# AT_CHECK_AT.  Verify that `ok' prints at COLUMN.
m4_define([AT_CHECK_AT_TITLE],
[AT_CHECK_AT([$1],
[[
m4@&t@_define([macro_name],         [[macro_expanded]])
m4@&t@_define([macro_expanded],     [[macro_overexpanded]])
m4@&t@_define([macro_backquote],    [`])
m4@&t@_define([macro_single_quote], ['])
m4@&t@_define([macro_double_quote], ["])
]]dnl restore font-lock: "
[[m4@&t@_define([macro_backslash],  [\])
m4@&t@_define([macro_echo],         [$][1])
AT_INIT([artificial test suite])
AT_SETUP([$2])
AT_CHECK([:])
AT_CLEANUP
]], [$4], [], [], [],
dnl This sed script checks for two things - that the output is properly
dnl expanded, and that the 'ok' starts on the right column.
[AT_KEYWORDS([m4@&t@_expand])
AT_CHECK([[$CONFIG_SHELL ./micro-suite |
	    sed -n '/^  1:/{
h
s/[^:]*: \(.*[^	 ]\)[	 ]*ok.*/\1/p
x
s/^.\{]]]m4_default($5, 53)[[[\}ok.*/ok/p
}']],,
[[$3
ok
]])
AT_CHECK([[$CONFIG_SHELL ./micro-suite -l |
	   sed -n 's/.*[0-9]: [^	 ][^	 ]*[	 ][	 ]*\(.*[^	 ]\)[	 ]*/\1/p']],,
[[$3
]])
AT_CHECK([[sed -n 's/[^.]*\. \(.*\) ([^)]*): ok.*/\1/p' micro-suite.log]],,
[[$3
]])
])])

m4_define([AT_CHECK_AT_TITLE_CHAR],
[AT_CHECK_AT_TITLE([$1 in a test title], [A $2 in my name],
                   [A ]m4_ifval([$3], [[$3]], [[$2]])[ in my name], $4, $5)])

AT_CHECK_AT_TITLE_CHAR([Backquote],     [`])
AT_CHECK_AT_TITLE_CHAR([Single-quote],  ['])
AT_CHECK_AT_TITLE_CHAR([Double-quote],  ["])
dnl restore font-lock: "
AT_CHECK_AT_TITLE_CHAR([Backslash],     [\])
AT_CHECK_AT_TITLE_CHAR([Brackets],   [[[]]], [[]])
AT_CHECK_AT_TITLE_CHAR([Left bracket],  [@<@&t@:@], [@<:@])
AT_CHECK_AT_TITLE_CHAR([Right bracket], [@:@&t@>@], [@:>@])
AT_CHECK_AT_TITLE_CHAR([Pound],       [[#]], [#])
AT_CHECK_AT_TITLE_CHAR([Quoted comma],[[,]], [,])
AT_CHECK_AT_TITLE_CHAR([Comma],         [,], [,])
dnl this test also hits quadrigraphs for ()
AT_CHECK_AT_TITLE_CHAR([Parentheses],   [(@{:@)@:}@], [(())])
AT_CHECK_AT_TITLE_CHAR([Left paren],    [[(]], [(])
AT_CHECK_AT_TITLE_CHAR([Right paren],   [[)]], [)])

AT_CHECK_AT_TITLE_CHAR([Quoted Macro], [[macro_name]], [macro_name])
AT_CHECK_AT_TITLE_CHAR([Macro],        [macro_name],   [macro_expanded])
AT_CHECK_AT_TITLE_CHAR([Macro with backquote],       [macro_backquote], [`])
AT_CHECK_AT_TITLE_CHAR([Macro with single-quote], [macro_single_quote], ['])
AT_CHECK_AT_TITLE_CHAR([Macro with double-quote], [macro_double_quote], ["])
dnl restore font-lock: "
AT_CHECK_AT_TITLE_CHAR([Macro with backslash],       [macro_backslash], [\])
AT_CHECK_AT_TITLE_CHAR([Macro echoing macro], [macro_echo([macro_name])],
                       [macro_expanded])
AT_CHECK_AT_TITLE_CHAR([Macro echoing single-quote], [macro_echo(['])], ['])
AT_CHECK_AT_TITLE_CHAR([Long test title], [0123456789012345678901234567890123])
AT_CHECK_AT_TITLE_CHAR([Longer test title],
		       [01234567890123456789012345678901234], [], [], [54])


## ----------------------- ##
## Long test source lines. ##
## ----------------------- ##

# Create a test file that has more than 99 words in a line, for Solaris awk.
# While at that, try out the limit of 2000 bytes in a text file line.

AT_CHECK_AT_TEST([Long test source lines],
[m4_for([nnn], [1], [999], [], [: ])
AT_CHECK([:])
], [], [], [], [ignore],
[AT_CHECK([$CONFIG_SHELL ./micro-suite -k skipalltests], [], [ignore], [ignore])
])


## ----------------- ##
## Debugging a test. ##
## ----------------- ##

AT_CHECK_AT_TEST([Debugging a successful test],
  [AT_CHECK([:])], [], [], [], [ignore],
[# Without options, when all tests pass, no test directory should exist.
AT_CHECK([test -d micro-suite.dir/1 && exit 42
          $CONFIG_SHELL ./micro-suite -d 1], [], [ignore], [ignore])
# Running with -d should leave a reproducible test group.
# Also, running the test script from the test group locks the
# directory from removal on some platforms; the script should still be
# able to run even if rmdir fails.
AT_CHECK([(cd micro-suite.dir/1 && ./run)], [], [ignore], [ignore])
# Running a debugging script implies -d.
AT_CHECK([(cd micro-suite.dir/1 && ./run)], [], [ignore], [ignore])
])

AT_CHECK_AT_TEST([Debugging script and environment],
  [AT_CHECK([test "$MY_VAR" = pass || exit 42])],
  [], [1], [], [ignore], [
# Changing environment outside of debugging script is not preserved.
AT_CHECK([(cd micro-suite.dir/1 && MY_VAR=pass ./run)],
         [0], [ignore], [ignore])
AT_CHECK([(cd micro-suite.dir/1 && ./run)],
         [1], [ignore], [ignore])
# Changing environment as argument to debugging script is preserved.
AT_CHECK([(cd micro-suite.dir/1; ./run MY_VAR=pass)],
         [0], [ignore], [ignore])
AT_CHECK([(cd micro-suite.dir/1; ./run)],
         [0], [ignore], [ignore])
])

# The run script must still be valid when shell metacharacters are passed
# in via an environment option.
AT_CHECK_AT_TEST([Debugging a failed test],
  [AT_CHECK([test "$MY_VAR" = "one space" || exit 42])],
  [], [1], [], [ignore], [
AT_CHECK([(cd micro-suite.dir/1 && ./run MY_VAR='two  spaces')],
         [1], [ignore], [ignore])
AT_CHECK([(cd micro-suite.dir/1 && ./run MY_VAR='one space')],
         [0], [ignore], [ignore])
])


# Setting default variable values via atlocal.
AT_CHECK_AT_TEST([Using atlocal],
  [AT_CHECK([test "x$MY_VAR" = "xodd;  'string" || exit 42])],
  [], [1], [ignore], [ignore], [
dnl check that command line can set variable
AT_CHECK([$CONFIG_SHELL ./micro-suite MY_VAR="odd;  'string"], [0], [ignore])
dnl check that command line overrides environment
AT_CHECK([MY_VAR="odd;  'string" $CONFIG_SHELL ./micro-suite MY_VAR=unset],
         [1], [ignore], [ignore])
dnl check that atlocal can give it a default
AT_CHECK([cat <<EOF >atlocal
MY_VAR="odd;  'string"
export MY_VAR
dnl Also populate enough of atlocal to do what atconfig normally does.
at_testdir=.
abs_builddir='`pwd`'
at_srcdir=.
abs_srcdir='`pwd`'
at_top_srcdir=.
abs_top_srcdir='`pwd`'
at_top_build_prefix=
abs_top_builddir='`pwd`'
EOF
])
AT_CHECK([$CONFIG_SHELL ./micro-suite], [0], [ignore])
dnl check that atlocal overrides environment
AT_CHECK([MY_VAR=unset $CONFIG_SHELL ./micro-suite], [0], [ignore])
dnl check that command line overrides atlocal
AT_CHECK([$CONFIG_SHELL ./micro-suite MY_VAR=], [1], [ignore], [ignore])
dnl check that syntax error is detected
AT_CHECK([$CONFIG_SHELL ./micro-suite =], [1], [], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite 1=2], [1], [], [ignore], [ignore])
])


# Controlling where the testsuite is run.
AT_CHECK_AT_TEST([Choosing where testsuite is run],
  [AT_CHECK([:])], [], [], [], [], [
dnl AT_CHECK_AT_TEST tests the default of running in `.'.
AT_CHECK([$CONFIG_SHELL ./micro-suite --clean])
AT_CHECK([test -f micro-suite.log], [1])
AT_CHECK([test -d micro-suite.dir], [1])
AT_CHECK([mkdir sub1 sub2])
dnl check specifying a different relative path to run in.
AT_CHECK([$CONFIG_SHELL ./micro-suite -C sub1], [0], [ignore], [])
AT_CHECK([test -f micro-suite.log], [1])
AT_CHECK([test -f sub1/micro-suite.log], [0])
AT_CHECK([test -d micro-suite.dir], [1])
AT_CHECK([test -d sub1/micro-suite.dir], [0])
AT_CHECK([$CONFIG_SHELL ./micro-suite -C sub1 --clean])
AT_CHECK([test -f sub1/micro-suite.log], [1])
AT_CHECK([test -d sub1/micro-suite.dir], [1])
dnl check specifying an absolute path to run in.
AT_CHECK([$CONFIG_SHELL ./micro-suite --directory="`pwd`/sub2"],
         [0], [ignore], [])
AT_CHECK([test -f micro-suite.log], [1])
AT_CHECK([test -f sub2/micro-suite.log], [0])
AT_CHECK([$CONFIG_SHELL ./micro-suite --clean --directory="`pwd`/sub2"])
AT_CHECK([test -f sub2/micro-suite.log], [1])
AT_CHECK([test -f sub2/micro-suite.dir], [1])
dnl check for failure detection with bad, missing, or empty directory.
AT_CHECK([$CONFIG_SHELL ./micro-suite -C nonesuch], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite -C ''], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite -C -], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite -C], [1], [ignore], [ignore])
dnl check that --help overrides bad directory selection.
AT_CHECK([$CONFIG_SHELL ./micro-suite -C nonesuch --help], [0], [ignore], [])
])


## -------- ##
## Banners. ##
## -------- ##
AT_SETUP([Banners])

AT_CHECK_AT_PREP([b],
[[AT_INIT
AT_SETUP(zero)# 1
AT_CHECK(:)
AT_CLEANUP

AT_BANNER([first])
AT_SETUP(one a)# 2
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(one b)# 3
AT_CHECK(:)
AT_CLEANUP

AT_BANNER()
AT_SETUP(two)# 4
AT_CHECK(:)
AT_CLEANUP

AT_BANNER([second])
AT_SETUP(three a)# 5
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(three b)# 6
AT_CHECK(:)
AT_CLEANUP
]])

# AT_CHECK_BANNERS(TESTSUITE-OPTIONS, PATTERN1, COUNT1, PATTERN2, COUNT2)
m4_define([AT_CHECK_BANNERS],
[AT_CHECK([$CONFIG_SHELL ./b $1], [], [stdout])
AT_CHECK_EGREP([$2], m4_if([$3], [0], [1], [0]), [$3])
AT_CHECK_EGREP([$4], m4_if([$5], [0], [1], [0]), [$5])
])

AT_CHECK_BANNERS([],		[first], [1], [second], [1])
AT_CHECK_BANNERS([-k zero],	[first], [0], [second], [0])
AT_CHECK_BANNERS([1],		[first], [0], [second], [0])
AT_CHECK_BANNERS([-2],		[first], [1], [second], [0])
AT_CHECK_BANNERS([-3],		[first], [1], [second], [0])
AT_CHECK_BANNERS([-k one],	[first], [1], [second], [0])
AT_CHECK_BANNERS([3-4],		[first], [1], [second], [0])
AT_CHECK_BANNERS([3-5],		[first], [1], [second], [1])
AT_CHECK_BANNERS([4-5],		[first], [0], [second], [1])
AT_CHECK_BANNERS([3-],		[first], [1], [second], [1])
AT_CHECK_BANNERS([-k a],	[first], [1], [second], [1])
AT_CHECK_BANNERS([4],		[first], [0], [second], [0])
AT_CHECK_BANNERS([4-],		[first], [0], [second], [1])
AT_CHECK_BANNERS([-k two],	[first], [0], [second], [0])
AT_CHECK_BANNERS([1 4],		[first], [0], [second], [0])
AT_CHECK_BANNERS([-k three],	[first], [0], [second], [1])
AT_CHECK_BANNERS([5],		[first], [0], [second], [0])
AT_CHECK_BANNERS([5-],		[first], [0], [second], [1])
AT_CLEANUP


## --------- ##
## Keywords. ##
## --------- ##
AT_SETUP([Keywords and ranges])

AT_CHECK_AT_PREP([k],
[[AT_INIT
AT_SETUP(none) # 01
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(first) # 02
AT_KEYWORDS(key1)
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(second) # 03
AT_KEYWORDS(key2)
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(both) # 04
AT_KEYWORDS([key1 key2])
AT_KEYWORDS([m4@&t@_echo([Key1])])
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(test5) # 05
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(test6) # 06
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(test7) # 07
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(test8) # 08
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(test9) # 09
AT_CHECK(:)
AT_CLEANUP
AT_SETUP(test10) # 10
AT_CHECK(:)
AT_CLEANUP
]])
dnl check that AT_KEYWORDS does not duplicate words
AT_CHECK([grep -i 'key1.*key1' k], [1])
dnl check that -k requires an argument
AT_CHECK([$CONFIG_SHELL ./k -k], [1], [], [ignore])

# AT_CHECK_KEYS(TESTSUITE-OPTIONS, PATTERN1, COUNT1, PATTERN2, COUNT2)
m4_define([AT_CHECK_KEYS],
[AT_CHECK([$CONFIG_SHELL ./k $1], 0, [stdout])
AT_CHECK_EGREP([$2], 0, [$3])
AT_CHECK_EGREP([$4], 1, [$5])
])

AT_CHECK_KEYS([-k key1], [first|both], [2], [none|second], [0])
AT_CHECK_KEYS([-k key2], [second|both], [2], [none|first], [0])
AT_CHECK_KEYS([-k key1,key2], [both], [1], [none|first|second], [0])
AT_CHECK_KEYS([-k key1 -k key2], [first|second|both], [3], [none], [0])
AT_CHECK_KEYS([-k '!key1'], [none|second], [2], [first|both], [0])
AT_CHECK_KEYS([-k '!key2'], [none|first], [2], [second|both], [0])
AT_CHECK_KEYS([-k '!key1,key2'], [second], [1], [none|first|both], [0])
AT_CHECK_KEYS([-k 'key1,!key2'], [first], [1], [none|second|both], [0])
AT_CHECK_KEYS([-k '!key1,!key2'], [none], [1], [first|second|both], [0])
AT_CHECK_KEYS([-k '!key1' -k KEY2], [none|second|both], [3], [first], [0])
AT_CHECK_KEYS([-k key1 -k '!key2'], [none|first|both], [3], [second], [0])
AT_CHECK_KEYS([-k '!KEY1' -k '!key2'], [none|first|second], [3], [both], [0])

AT_CHECK_KEYS([-k none], [none], [1], [first|second|both], [0])
AT_CHECK_KEYS([-k key1,both], [both], [1], [none|first|second], [0])
AT_CHECK_KEYS([-k key1 -k both], [first|both], [2], [none|second], [0])
AT_CHECK_KEYS([-k none,first], [successful], [1], [none|first|second|both], [0])
AT_CHECK_KEYS([-k none,first,second,both], [successful], [1], [none|first|second|both], [0])
AT_CHECK_KEYS([-k !none,first], [first], [1], [none|second|both], [0])

AT_CHECK_KEYS([-k '.*eco.*'], [second], [1], [none|first|both], [0])
AT_CHECK_KEYS([-k 'ECO'], [successful], [1], [none|first|second|both], [0])
AT_CHECK_KEYS([-k '.*eco'], [successful], [1], [none|first|second|both], [0])
AT_CHECK_KEYS([-k 'eco.*'], [successful], [1], [none|first|second|both], [0])
AT_CHECK_KEYS([-k 'fir.*'], [first], [1], [none|second|both], [0])

AT_CHECK_KEYS([1-2], [none|first], [2], [second|both], [0])
AT_CHECK_KEYS([01-002 08], [none|first], [2], [second|both], [0])
AT_CHECK_KEYS([1-3 2-1], [none|first|second], [3], [both], [0])
AT_CHECK_KEYS([-3], [none|first|second], [3], [both], [0])
AT_CHECK_KEYS([4-], [both], [1], [none|first|second], [0])
AT_CHECK_KEYS([010], [test10], [1], [none|first|second|both], [0])
AT_CHECK_KEYS([-k second 4-], [second|both], [2], [none|first], [0])

AT_CHECK([$CONFIG_SHELL ./k 0], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./k 0-], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./k -0], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./k 11], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./k 11-], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./k 1-011], [1], [ignore], [ignore])
AT_CHECK([$CONFIG_SHELL ./k -k nonexistent], [0], [ignore])

AT_CHECK_KEYS([--list -k nonexistent], [KEYWORDS], [1], [first|second|both], [0])
AT_CHECK_KEYS([--list 1], [none], [1], [first|second|both], [0])
AT_CHECK_KEYS([--list 01], [none], [1], [first|second|both], [0])
AT_CHECK_KEYS([--list -k none -k first], [none|first], [2], [second|both], [0])
AT_CLEANUP


## ----------------------- ##
## parallel test execution ##
## ----------------------- ##

AT_SETUP([parallel test execution])

# This test tries to ensure that -j runs tests in parallel.
# Such a test is inherently racy, because there are no real-time
# guarantees about scheduling delays.  So we try to minimize
# the chance to lose the race.

# The time needed for a micro-suite consisting of NTESTS tests each
# sleeping for a second is estimated by
#   startup + ntests * (serial_overhead + 1 / njobs)
#
# in absence of major scheduling delays.  This leads to side conditions:
# - NTESTS should be high, so the STARTUP time is small compared to the
#   test run time, and scheduling delays can even out; it should not be
#   too high, to not slow down the testsuite unnecessarily,
# - the number of concurrent jobs NJOBS should not be too low, so the
#   race is not lost so easily; it should not be too high, to avoid fork
#   failures on tightly limited systems.  4 seems a good compromise
#   here, considering that Autotest spawns several other processes.
# - STARTUP is assumed to be the same for parallel and serial runs, so
#   the latter can estimate the former.
# - To avoid unportable output from time measurement commands, spawn
#   both a parallel and a serial testsuite run; check that the former
#   completes before the latter has completed a fraction SERIAL_NTESTS
#   of the tests (the serial run is executed in a subdirectory), plus
#   some additional time to allow for compensation of SERIAL_OVERHEAD.
# - when adding this time to the serial test execution, an initial delay
#   SERIAL_DELAY of the serial test helps to avoid unreliable scheduling
#   due to the startup burst of the suites.

dnl total number of tests.
m4_define([AT_PARALLEL_NTESTS], [16])
dnl number of jobs to run in parallel.
m4_define([AT_PARALLEL_NJOBS], [4])
dnl number of tests to run serially, as comparison.
m4_define([AT_PARALLEL_SERIAL_NTESTS],
  m4_eval(AT_PARALLEL_NTESTS / AT_PARALLEL_NJOBS))
dnl initial delay of serial run, to compensate for SERIAL_OVERHEAD.
dnl This corresponds to 0.67 s of overhead per test.
m4_define([AT_PARALLEL_SERIAL_DELAY],
  m4_eval((AT_PARALLEL_NTESTS - AT_PARALLEL_SERIAL_NTESTS + 1) * 2 / 3))


AT_CHECK_AT_PREP([micro-suite],
[[AT_INIT([suite to test parallel execution])
m4_for([count], [1], ]]AT_PARALLEL_NTESTS[[, [],
   [AT_SETUP([test number count])
    AT_CHECK([sleep 1])
    AT_CLEANUP
])
]])

AT_CHECK([$CONFIG_SHELL ./micro-suite --help | grep " --jobs"], [0], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite -j2foo], [1], [], [stderr])
AT_CHECK([grep 'non-numeric argument' stderr], [], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite --jobs=foo], [1], [], [stderr])
AT_CHECK([grep 'non-numeric argument' stderr], [], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite -j[]AT_PARALLEL_NJOBS], [], [stdout])
# Ensure that all tests run, and lines are not split.
AT_CHECK([grep -c '^.\{53\}ok' stdout], [], [AT_PARALLEL_NTESTS
])
# Running one test with -j should produce correctly formatted output:
AT_CHECK([$CONFIG_SHELL ./micro-suite -j 3], [], [stdout])
AT_CHECK([grep -c '^.\{53\}ok' stdout], [], [1
])
# Specifying more jobs than tests should not hang:
AT_CHECK([$CONFIG_SHELL ./micro-suite -j3 3], [], [stdout])
AT_CHECK([grep -c '^.\{53\}ok' stdout], [], [1
])
# Not even with zero tests:
AT_CHECK([$CONFIG_SHELL ./micro-suite -j -k nomatch], [], [ignore])
AT_CHECK([$CONFIG_SHELL ./micro-suite -j3 -k nomatch], [], [ignore])

# The parallel scheduler requires mkfifo to work.
AT_CHECK([mkfifo fifo || exit 77])
mkdir serial

# Unfortunately, the return value of wait is unreliable,
# so we check that kill fails.
AT_CHECK([$CONFIG_SHELL ./micro-suite --jobs=[]AT_PARALLEL_NJOBS & ]dnl
         [sleep AT_PARALLEL_SERIAL_DELAY && ]dnl
         [cd serial && $CONFIG_SHELL ../micro-suite -AT_PARALLEL_SERIAL_NTESTS >/dev/null && ]dnl
         [{ kill $! && exit 1; :; }], [], [stdout], [ignore])
AT_CHECK([grep -c '^.\{53\}ok' stdout], [], [AT_PARALLEL_NTESTS
])
AT_CHECK([grep 'AT_PARALLEL_NTESTS tests' stdout], [], [ignore])

AT_CLEANUP

AT_CHECK_AT_TEST([parallel truth],
  [AT_CHECK([:], 0, [], [])],
  [], [], [], [],
  [], [-j])

AT_CHECK_AT_TEST([parallel fallacy],
  [AT_CHECK([false], [], [], [])],
  [], [1], [], [ignore],
  [AT_CHECK([grep failed micro-suite.log], [], [ignore])], [-j])

AT_CHECK_AT_TEST([parallel skip],
  [AT_CHECK([exit 77], 0, [], [])],
  [], [], [], [],
  [AT_CHECK([grep skipped micro-suite.log], [], [ignore])], [-j])

AT_CHECK_AT_TEST([parallel errexit],
  [AT_CHECK([false])
   AT_CLEANUP
   AT_SETUP([barrier test])
   AT_CHECK([sleep 4])
   AT_CLEANUP
   AT_SETUP([test that should not be run])
   AT_CHECK([:])],
  [], [1], [stdout], [stderr],
  [AT_CHECK([test -f micro-suite.log], [1])
   touch micro-suite.log # shut up AT_CAPTURE_FILE.
   AT_CHECK([grep "should not be run" stdout], [1])
   AT_CHECK([grep "[[12]] .* inhibited subsequent" stderr], [], [ignore])],
  [-j2 --errexit])


## ------------------- ##
## srcdir propagation. ##
## ------------------- ##

AT_SETUP([srcdir propagation])

mkdir pkg vpath-outside vpath-abs
mkdir pkg/t pkg/vpath-inside
AT_DATA([pkg/a])
AT_DATA([pkg/t/b])

AT_DATA([pkg/configure.ac], [[AC_INIT
AC_CONFIG_TESTDIR([t])
AC_OUTPUT
]])
cp "$abs_top_srcdir/build-aux/install-sh" pkg

cd pkg
AT_CHECK_AUTOCONF
cd ..

AT_CHECK_AT_PREP([suite],
[[AT_INIT([suite to check srcdir])
AT_SETUP([my only test])
AT_CHECK([test -f "$top_srcdir"/a && test -f "$srcdir"/b])
AT_CLEANUP
]], [], [], [], [pkg/t])

# Build directory totally outside source directory.
cd vpath-outside
AT_CHECK([../pkg/configure], [0], [ignore])
cd t
AT_CHECK([../../pkg/t/suite], [0], [ignore])
cd ../..

# Build directory totally outside source directory (absolute).
my_srcdir=`pwd`/pkg
cd vpath-abs
AT_CHECK(["$my_srcdir"/configure], [0], [ignore])
cd t
AT_CHECK(["$my_srcdir"/t/suite], [0], [ignore])
cd ../..

# Build directory as subdirectory of source directory.
cd pkg/vpath-inside
AT_CHECK([../configure], [0], [ignore])
cd t
AT_CHECK([../../t/suite], [0], [ignore])
cd ../../..

# Build directory as parent of source directory.
AT_CHECK([pkg/configure], [0], [ignore])
cd t
AT_CHECK([../pkg/t/suite], [0], [ignore])
cd ..

# Build directory as source directory.
cd pkg
AT_CHECK_CONFIGURE
cd t
AT_CHECK([./suite], [0], [ignore])
cd ../..

AT_CLEANUP


## ------------------------------ ##
## whitespace in absolute testdir ##
## ------------------------------ ##

AT_SETUP([whitespace in absolute testdir])

dir='dir with  whitespace'
mkdir "$dir"
cd "$dir"
wd=`pwd`

AT_DATA([a])
AT_CHECK_AT_PREP([suite],
[[AT_INIT([suite to check srcdir])
AT_SETUP([my only test])
AT_CHECK([test -f "$top_srcdir"/a])
AT_CLEANUP
]])
AT_CHECK([top_srcdir=$wd ./suite], [0], [ignore])
AT_CHECK([top_srcdir=$wd ./suite -d], [0], [ignore])
AT_CHECK([cd suite.dir/1 && ./run top_srcdir="$wd"], [0], [ignore], [ignore])
AT_CLEANUP


## ------------------ ##
## unusual file names ##
## ------------------ ##

AT_SETUP([unusual file names])

AT_DATA_M4SUGAR([d@&t@nl.at],
[[AT@&t@_SETUP([test one])
m4_pattern_allow([^dnl$])
AT@&t@_CHECK([test "]m4_dquote(AT@&t@_LINE)[" = dn[]l.at:3])
AT@&t@_CLEANUP
]])

mkdir sub
AT_DATA_M4SUGAR([sub/"two  spaces".at],
[[AT@&t@_SETUP([test two])
AT@&t@_CHECK([test "]m4_dquote(AT@&t@_LINE)[" = "two  spaces.at:2"])
AT@&t@_CLEANUP
]])

AT_CHECK_AT_PREP([suite],
[[AT_INIT([suite to check included file names])
m4@&t@_include([d][nl.at])
m4@&t@_include([sub/two  spaces.at])
]])
AT_CHECK([$CONFIG_SHELL ./suite], [0], [ignore])
AT_CLEANUP