617 lines
20 KiB
Bash
617 lines
20 KiB
Bash
# source this file; set up for tests
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# Copyright (C) 2009-2016 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Using this file in a test
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# =========================
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#
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# The typical skeleton of a test looks like this:
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#
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# #!/bin/sh
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# . "${srcdir=.}/init.sh"; path_prepend_ .
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# Execute some commands.
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# Note that these commands are executed in a subdirectory, therefore you
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# need to prepend "../" to relative filenames in the build directory.
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# Note that the "path_prepend_ ." is useful only if the body of your
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# test invokes programs residing in the initial directory.
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# For example, if the programs you want to test are in src/, and this test
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# script is named tests/test-1, then you would use "path_prepend_ ../src",
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# or perhaps export PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH"
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# to all tests via automake's TESTS_ENVIRONMENT.
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# Set the exit code 0 for success, 77 for skipped, or 1 or other for failure.
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# Use the skip_ and fail_ functions to print a diagnostic and then exit
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# with the corresponding exit code.
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# Exit $?
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# Executing a test that uses this file
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# ====================================
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#
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# Running a single test:
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# $ make check TESTS=test-foo.sh
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#
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# Running a single test, with verbose output:
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# $ make check TESTS=test-foo.sh VERBOSE=yes
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#
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# Running a single test, with single-stepping:
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# 1. Go into a sub-shell:
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# $ bash
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# 2. Set relevant environment variables from TESTS_ENVIRONMENT in the
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# Makefile:
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# $ export srcdir=../../tests # this is an example
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# 3. Execute the commands from the test, copy&pasting them one by one:
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# $ . "$srcdir/init.sh"; path_prepend_ .
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# ...
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# 4. Finally
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# $ exit
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ME_=`expr "./$0" : '.*/\(.*\)$'`
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# We use a trap below for cleanup. This requires us to go through
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# hoops to get the right exit status transported through the handler.
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# So use 'Exit STATUS' instead of 'exit STATUS' inside of the tests.
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# Turn off errexit here so that we don't trip the bug with OSF1/Tru64
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# sh inside this function.
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Exit () { set +e; (exit $1); exit $1; }
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# Print warnings (e.g., about skipped and failed tests) to this file number.
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# Override by defining to say, 9, in init.cfg, and putting say,
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# export ...ENVVAR_SETTINGS...; $(SHELL) 9>&2
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# in the definition of TESTS_ENVIRONMENT in your tests/Makefile.am file.
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# This is useful when using automake's parallel tests mode, to print
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# the reason for skip/failure to console, rather than to the .log files.
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: ${stderr_fileno_=2}
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# Note that correct expansion of "$*" depends on IFS starting with ' '.
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# Always write the full diagnostic to stderr.
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# When stderr_fileno_ is not 2, also emit the first line of the
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# diagnostic to that file descriptor.
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warn_ ()
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{
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# If IFS does not start with ' ', set it and emit the warning in a subshell.
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case $IFS in
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' '*) printf '%s\n' "$*" >&2
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test $stderr_fileno_ = 2 \
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|| { printf '%s\n' "$*" | sed 1q >&$stderr_fileno_ ; } ;;
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*) (IFS=' '; warn_ "$@");;
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esac
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}
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fail_ () { warn_ "$ME_: failed test: $@"; Exit 1; }
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skip_ () { warn_ "$ME_: skipped test: $@"; Exit 77; }
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fatal_ () { warn_ "$ME_: hard error: $@"; Exit 99; }
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framework_failure_ () { warn_ "$ME_: set-up failure: $@"; Exit 99; }
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# This is used to simplify checking of the return value
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# which is useful when ensuring a command fails as desired.
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# I.e., just doing `command ... &&fail=1` will not catch
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# a segfault in command for example. With this helper you
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# instead check an explicit exit code like
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# returns_ 1 command ... || fail
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returns_ () {
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# Disable tracing so it doesn't interfere with stderr of the wrapped command
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{ set +x; } 2>/dev/null
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local exp_exit="$1"
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shift
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"$@"
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test $? -eq $exp_exit && ret_=0 || ret_=1
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if test "$VERBOSE" = yes && test "$gl_set_x_corrupts_stderr_" = false; then
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set -x
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fi
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{ return $ret_; } 2>/dev/null
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}
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# Sanitize this shell to POSIX mode, if possible.
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DUALCASE=1; export DUALCASE
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if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
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emulate sh
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NULLCMD=:
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alias -g '${1+"$@"}'='"$@"'
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setopt NO_GLOB_SUBST
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else
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case `(set -o) 2>/dev/null` in
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*posix*) set -o posix ;;
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esac
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fi
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# We require $(...) support unconditionally.
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# We require a few additional shell features only when $EXEEXT is nonempty,
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# in order to support automatic $EXEEXT emulation:
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# - hyphen-containing alias names
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# - we prefer to use ${var#...} substitution, rather than having
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# to work around lack of support for that feature.
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# The following code attempts to find a shell with support for these features.
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# If the current shell passes the test, we're done. Otherwise, test other
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# shells until we find one that passes. If one is found, re-exec it.
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# If no acceptable shell is found, skip the current test.
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#
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# The "...set -x; P=1 true 2>err..." test is to disqualify any shell that
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# emits "P=1" into err, as /bin/sh from SunOS 5.11 and OpenBSD 4.7 do.
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#
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# Use "9" to indicate success (rather than 0), in case some shell acts
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# like Solaris 10's /bin/sh but exits successfully instead of with status 2.
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# Eval this code in a subshell to determine a shell's suitability.
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# 10 - passes all tests; ok to use
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# 9 - ok, but enabling "set -x" corrupts app stderr; prefer higher score
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# ? - not ok
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gl_shell_test_script_='
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test $(echo y) = y || exit 1
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f_local_() { local v=1; }; f_local_ || exit 1
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score_=10
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if test "$VERBOSE" = yes; then
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test -n "$( (exec 3>&1; set -x; P=1 true 2>&3) 2> /dev/null)" && score_=9
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fi
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test -z "$EXEEXT" && exit $score_
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shopt -s expand_aliases
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alias a-b="echo zoo"
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v=abx
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test ${v%x} = ab \
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&& test ${v#a} = bx \
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&& test $(a-b) = zoo \
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&& exit $score_
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'
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if test "x$1" = "x--no-reexec"; then
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shift
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else
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# Assume a working shell. Export to subshells (setup_ needs this).
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gl_set_x_corrupts_stderr_=false
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export gl_set_x_corrupts_stderr_
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# Record the first marginally acceptable shell.
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marginal_=
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# Search for a shell that meets our requirements.
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for re_shell_ in __current__ "${CONFIG_SHELL:-no_shell}" \
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/bin/sh bash dash zsh pdksh fail
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do
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test "$re_shell_" = no_shell && continue
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# If we've made it all the way to the sentinel, "fail" without
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# finding even a marginal shell, skip this test.
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if test "$re_shell_" = fail; then
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test -z "$marginal_" && skip_ failed to find an adequate shell
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re_shell_=$marginal_
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break
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fi
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# When testing the current shell, simply "eval" the test code.
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# Otherwise, run it via $re_shell_ -c ...
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if test "$re_shell_" = __current__; then
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# 'eval'ing this code makes Solaris 10's /bin/sh exit with
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# $? set to 2. It does not evaluate any of the code after the
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# "unexpected" first '('. Thus, we must run it in a subshell.
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( eval "$gl_shell_test_script_" ) > /dev/null 2>&1
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else
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"$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null
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fi
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st_=$?
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# $re_shell_ works just fine. Use it.
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if test $st_ = 10; then
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gl_set_x_corrupts_stderr_=false
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break
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fi
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# If this is our first marginally acceptable shell, remember it.
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if test "$st_:$marginal_" = 9: ; then
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marginal_="$re_shell_"
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gl_set_x_corrupts_stderr_=true
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fi
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done
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if test "$re_shell_" != __current__; then
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# Found a usable shell. Preserve -v and -x.
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case $- in
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*v*x* | *x*v*) opts_=-vx ;;
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*v*) opts_=-v ;;
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*x*) opts_=-x ;;
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*) opts_= ;;
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esac
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re_shell=$re_shell_
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export re_shell
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exec "$re_shell_" $opts_ "$0" --no-reexec "$@"
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echo "$ME_: exec failed" 1>&2
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exit 127
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fi
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fi
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# If this is bash, turn off all aliases.
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test -n "$BASH_VERSION" && unalias -a
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# Note that when supporting $EXEEXT (transparently mapping from PROG_NAME to
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# PROG_NAME.exe), we want to support hyphen-containing names like test-acos.
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# That is part of the shell-selection test above. Why use aliases rather
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# than functions? Because support for hyphen-containing aliases is more
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# widespread than that for hyphen-containing function names.
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test -n "$EXEEXT" && shopt -s expand_aliases
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# Enable glibc's malloc-perturbing option.
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# This is useful for exposing code that depends on the fact that
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# malloc-related functions often return memory that is mostly zeroed.
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# If you have the time and cycles, use valgrind to do an even better job.
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: ${MALLOC_PERTURB_=87}
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export MALLOC_PERTURB_
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# This is a stub function that is run upon trap (upon regular exit and
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# interrupt). Override it with a per-test function, e.g., to unmount
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# a partition, or to undo any other global state changes.
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cleanup_ () { :; }
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# Emit a header similar to that from diff -u; Print the simulated "diff"
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# command so that the order of arguments is clear. Don't bother with @@ lines.
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emit_diff_u_header_ ()
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{
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printf '%s\n' "diff -u $*" \
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"--- $1 1970-01-01" \
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"+++ $2 1970-01-01"
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}
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# Arrange not to let diff or cmp operate on /dev/null,
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# since on some systems (at least OSF/1 5.1), that doesn't work.
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# When there are not two arguments, or no argument is /dev/null, return 2.
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# When one argument is /dev/null and the other is not empty,
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# cat the nonempty file to stderr and return 1.
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# Otherwise, return 0.
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compare_dev_null_ ()
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{
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test $# = 2 || return 2
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if test "x$1" = x/dev/null; then
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test -s "$2" || return 0
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emit_diff_u_header_ "$@"; sed 's/^/+/' "$2"
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return 1
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fi
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if test "x$2" = x/dev/null; then
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test -s "$1" || return 0
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emit_diff_u_header_ "$@"; sed 's/^/-/' "$1"
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return 1
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fi
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return 2
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}
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if diff_out_=`exec 2>/dev/null; diff -u "$0" "$0" < /dev/null` \
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&& diff -u Makefile "$0" 2>/dev/null | grep '^[+]#!' >/dev/null; then
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# diff accepts the -u option and does not (like AIX 7 'diff') produce an
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# extra space on column 1 of every content line.
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if test -z "$diff_out_"; then
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compare_ () { diff -u "$@"; }
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else
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compare_ ()
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{
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if diff -u "$@" > diff.out; then
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# No differences were found, but Solaris 'diff' produces output
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# "No differences encountered". Hide this output.
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rm -f diff.out
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true
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else
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cat diff.out
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rm -f diff.out
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false
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fi
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}
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fi
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elif
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for diff_opt_ in -U3 -c '' no; do
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test "$diff_opt_" = no && break
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diff_out_=`exec 2>/dev/null; diff $diff_opt_ "$0" "$0" </dev/null` && break
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done
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test "$diff_opt_" != no
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then
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if test -z "$diff_out_"; then
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compare_ () { diff $diff_opt_ "$@"; }
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else
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compare_ ()
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{
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if diff $diff_opt_ "$@" > diff.out; then
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# No differences were found, but AIX and HP-UX 'diff' produce output
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# "No differences encountered" or "There are no differences between the
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# files.". Hide this output.
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rm -f diff.out
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true
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else
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cat diff.out
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rm -f diff.out
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false
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fi
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}
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fi
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elif cmp -s /dev/null /dev/null 2>/dev/null; then
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compare_ () { cmp -s "$@"; }
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else
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compare_ () { cmp "$@"; }
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fi
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# Usage: compare EXPECTED ACTUAL
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#
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# Given compare_dev_null_'s preprocessing, defer to compare_ if 2 or more.
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# Otherwise, propagate $? to caller: any diffs have already been printed.
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compare ()
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{
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# This looks like it can be factored to use a simple "case $?"
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# after unchecked compare_dev_null_ invocation, but that would
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# fail in a "set -e" environment.
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if compare_dev_null_ "$@"; then
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return 0
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else
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case $? in
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1) return 1;;
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*) compare_ "$@";;
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esac
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fi
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}
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# An arbitrary prefix to help distinguish test directories.
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testdir_prefix_ () { printf gt; }
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# Run the user-overridable cleanup_ function, remove the temporary
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# directory and exit with the incoming value of $?.
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remove_tmp_ ()
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{
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__st=$?
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cleanup_
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# cd out of the directory we're about to remove
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cd "$initial_cwd_" || cd / || cd /tmp
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chmod -R u+rwx "$test_dir_"
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# If removal fails and exit status was to be 0, then change it to 1.
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rm -rf "$test_dir_" || { test $__st = 0 && __st=1; }
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exit $__st
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}
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# Given a directory name, DIR, if every entry in it that matches *.exe
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# contains only the specified bytes (see the case stmt below), then print
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# a space-separated list of those names and return 0. Otherwise, don't
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# print anything and return 1. Naming constraints apply also to DIR.
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find_exe_basenames_ ()
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{
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feb_dir_=$1
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feb_fail_=0
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feb_result_=
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feb_sp_=
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for feb_file_ in $feb_dir_/*.exe; do
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# If there was no *.exe file, or there existed a file named "*.exe" that
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# was deleted between the above glob expansion and the existence test
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# below, just skip it.
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test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_" \
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&& continue
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# Exempt [.exe, since we can't create a function by that name, yet
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# we can't invoke [ by PATH search anyways due to shell builtins.
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test "x$feb_file_" = "x$feb_dir_/[.exe" && continue
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case $feb_file_ in
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*[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;;
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*) # Remove leading file name components as well as the .exe suffix.
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feb_file_=${feb_file_##*/}
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feb_file_=${feb_file_%.exe}
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feb_result_="$feb_result_$feb_sp_$feb_file_";;
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esac
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feb_sp_=' '
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done
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test $feb_fail_ = 0 && printf %s "$feb_result_"
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return $feb_fail_
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}
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# Consider the files in directory, $1.
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# For each file name of the form PROG.exe, create an alias named
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# PROG that simply invokes PROG.exe, then return 0. If any selected
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# file name or the directory name, $1, contains an unexpected character,
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# define no alias and return 1.
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create_exe_shims_ ()
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{
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case $EXEEXT in
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'') return 0 ;;
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.exe) ;;
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*) echo "$0: unexpected \$EXEEXT value: $EXEEXT" 1>&2; return 1 ;;
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esac
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base_names_=`find_exe_basenames_ $1` \
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|| { echo "$0 (exe_shim): skipping directory: $1" 1>&2; return 0; }
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if test -n "$base_names_"; then
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for base_ in $base_names_; do
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alias "$base_"="$base_$EXEEXT"
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done
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fi
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return 0
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}
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# Use this function to prepend to PATH an absolute name for each
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# specified, possibly-$initial_cwd_-relative, directory.
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path_prepend_ ()
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{
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while test $# != 0; do
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path_dir_=$1
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case $path_dir_ in
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'') fail_ "invalid path dir: '$1'";;
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/*) abs_path_dir_=$path_dir_;;
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*) abs_path_dir_=$initial_cwd_/$path_dir_;;
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esac
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case $abs_path_dir_ in
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*:*) fail_ "invalid path dir: '$abs_path_dir_'";;
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esac
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PATH="$abs_path_dir_:$PATH"
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# Create an alias, FOO, for each FOO.exe in this directory.
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create_exe_shims_ "$abs_path_dir_" \
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|| fail_ "something failed (above): $abs_path_dir_"
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shift
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done
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export PATH
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}
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setup_ ()
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{
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if test "$VERBOSE" = yes; then
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# Test whether set -x may cause the selected shell to corrupt an
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# application's stderr. Many do, including zsh-4.3.10 and the /bin/sh
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# from SunOS 5.11, OpenBSD 4.7 and Irix 5.x and 6.5.
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# If enabling verbose output this way would cause trouble, simply
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# issue a warning and refrain.
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if $gl_set_x_corrupts_stderr_; then
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warn_ "using SHELL=$SHELL with 'set -x' corrupts stderr"
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else
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set -x
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fi
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fi
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initial_cwd_=$PWD
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pfx_=`testdir_prefix_`
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|
test_dir_=`mktempd_ "$initial_cwd_" "$pfx_-$ME_.XXXX"` \
|
|
|| fail_ "failed to create temporary directory in $initial_cwd_"
|
|
cd "$test_dir_" || fail_ "failed to cd to temporary directory"
|
|
|
|
# As autoconf-generated configure scripts do, ensure that IFS
|
|
# is defined initially, so that saving and restoring $IFS works.
|
|
gl_init_sh_nl_='
|
|
'
|
|
IFS=" "" $gl_init_sh_nl_"
|
|
|
|
# This trap statement, along with a trap on 0 below, ensure that the
|
|
# temporary directory, $test_dir_, is removed upon exit as well as
|
|
# upon receipt of any of the listed signals.
|
|
for sig_ in 1 2 3 13 15; do
|
|
eval "trap 'Exit $(expr $sig_ + 128)' $sig_"
|
|
done
|
|
}
|
|
|
|
# Create a temporary directory, much like mktemp -d does.
|
|
# Written by Jim Meyering.
|
|
#
|
|
# Usage: mktempd_ /tmp phoey.XXXXXXXXXX
|
|
#
|
|
# First, try to use the mktemp program.
|
|
# Failing that, we'll roll our own mktemp-like function:
|
|
# - try to get random bytes from /dev/urandom
|
|
# - failing that, generate output from a combination of quickly-varying
|
|
# sources and gzip. Ignore non-varying gzip header, and extract
|
|
# "random" bits from there.
|
|
# - given those bits, map to file-name bytes using tr, and try to create
|
|
# the desired directory.
|
|
# - make only $MAX_TRIES_ attempts
|
|
|
|
# Helper function. Print $N pseudo-random bytes from a-zA-Z0-9.
|
|
rand_bytes_ ()
|
|
{
|
|
n_=$1
|
|
|
|
# Maybe try openssl rand -base64 $n_prime_|tr '+/=\012' abcd first?
|
|
# But if they have openssl, they probably have mktemp, too.
|
|
|
|
chars_=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
|
|
dev_rand_=/dev/urandom
|
|
if test -r "$dev_rand_"; then
|
|
# Note: 256-length($chars_) == 194; 3 copies of $chars_ is 186 + 8 = 194.
|
|
dd ibs=$n_ count=1 if=$dev_rand_ 2>/dev/null \
|
|
| LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
|
|
return
|
|
fi
|
|
|
|
n_plus_50_=`expr $n_ + 50`
|
|
cmds_='date; date +%N; free; who -a; w; ps auxww; ps ef; netstat -n'
|
|
data_=` (eval "$cmds_") 2>&1 | gzip `
|
|
|
|
# Ensure that $data_ has length at least 50+$n_
|
|
while :; do
|
|
len_=`echo "$data_"|wc -c`
|
|
test $n_plus_50_ -le $len_ && break;
|
|
data_=` (echo "$data_"; eval "$cmds_") 2>&1 | gzip `
|
|
done
|
|
|
|
echo "$data_" \
|
|
| dd bs=1 skip=50 count=$n_ 2>/dev/null \
|
|
| LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_
|
|
}
|
|
|
|
mktempd_ ()
|
|
{
|
|
case $# in
|
|
2);;
|
|
*) fail_ "Usage: mktempd_ DIR TEMPLATE";;
|
|
esac
|
|
|
|
destdir_=$1
|
|
template_=$2
|
|
|
|
MAX_TRIES_=4
|
|
|
|
# Disallow any trailing slash on specified destdir:
|
|
# it would subvert the post-mktemp "case"-based destdir test.
|
|
case $destdir_ in
|
|
/ | //) destdir_slash_=$destdir;;
|
|
*/) fail_ "invalid destination dir: remove trailing slash(es)";;
|
|
*) destdir_slash_=$destdir_/;;
|
|
esac
|
|
|
|
case $template_ in
|
|
*XXXX) ;;
|
|
*) fail_ \
|
|
"invalid template: $template_ (must have a suffix of at least 4 X's)";;
|
|
esac
|
|
|
|
# First, try to use mktemp.
|
|
d=`unset TMPDIR; { mktemp -d -t -p "$destdir_" "$template_"; } 2>/dev/null` &&
|
|
|
|
# The resulting name must be in the specified directory.
|
|
case $d in "$destdir_slash_"*) :;; *) false;; esac &&
|
|
|
|
# It must have created the directory.
|
|
test -d "$d" &&
|
|
|
|
# It must have 0700 permissions. Handle sticky "S" bits.
|
|
perms=`ls -dgo "$d" 2>/dev/null` &&
|
|
case $perms in drwx--[-S]---*) :;; *) false;; esac && {
|
|
echo "$d"
|
|
return
|
|
}
|
|
|
|
# If we reach this point, we'll have to create a directory manually.
|
|
|
|
# Get a copy of the template without its suffix of X's.
|
|
base_template_=`echo "$template_"|sed 's/XX*$//'`
|
|
|
|
# Calculate how many X's we've just removed.
|
|
template_length_=`echo "$template_" | wc -c`
|
|
nx_=`echo "$base_template_" | wc -c`
|
|
nx_=`expr $template_length_ - $nx_`
|
|
|
|
err_=
|
|
i_=1
|
|
while :; do
|
|
X_=`rand_bytes_ $nx_`
|
|
candidate_dir_="$destdir_slash_$base_template_$X_"
|
|
err_=`mkdir -m 0700 "$candidate_dir_" 2>&1` \
|
|
&& { echo "$candidate_dir_"; return; }
|
|
test $MAX_TRIES_ -le $i_ && break;
|
|
i_=`expr $i_ + 1`
|
|
done
|
|
fail_ "$err_"
|
|
}
|
|
|
|
# If you want to override the testdir_prefix_ function,
|
|
# or to add more utility functions, use this file.
|
|
test -f "$srcdir/init.cfg" \
|
|
&& . "$srcdir/init.cfg"
|
|
|
|
setup_ "$@"
|
|
# This trap is here, rather than in the setup_ function, because some
|
|
# shells run the exit trap at shell function exit, rather than script exit.
|
|
trap remove_tmp_ 0
|