X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Finit.sh;h=a57de77a2f1ac47a83be0adf463b8c05b9221790;hb=8e20755cd51476b841e55faf7c21a57d8884d130;hp=9b651292220326c16391c9fe918a90e1ffba8615;hpb=5fae8b2c1ede890005a55067b1f6630b114f112d;p=gnulib.git diff --git a/tests/init.sh b/tests/init.sh index 9b6512922..a57de77a2 100644 --- a/tests/init.sh +++ b/tests/init.sh @@ -21,11 +21,16 @@ # The typical skeleton of a test looks like this: # # #!/bin/sh -# : ${srcdir=.} -# . "$srcdir/init.sh"; path_prepend_ . +# . "${srcdir=.}/init.sh"; path_prepend_ . # Execute some commands. # Note that these commands are executed in a subdirectory, therefore you # need to prepend "../" to relative filenames in the build directory. +# Note that the "path_prepend_ ." is useful only if the body of your +# test invokes programs residing in the initial directory. +# For example, if the programs you want to test are in src/, and this test +# script is named tests/test-1, then you would use "path_prepend_ ../src", +# or perhaps export PATH='$(abs_top_builddir)/src$(PATH_SEPARATOR)'"$$PATH" +# to all tests via automake's TESTS_ENVIRONMENT. # Set the exit code 0 for success, 77 for skipped, or 1 or other for failure. # Use the skip_ and fail_ functions to print a diagnostic and then exit # with the corresponding exit code. @@ -52,71 +57,156 @@ # 4. Finally # $ exit +ME_=`expr "./$0" : '.*/\(.*\)$'` + +# We use a trap below for cleanup. This requires us to go through +# hoops to get the right exit status transported through the handler. +# So use `Exit STATUS' instead of `exit STATUS' inside of the tests. +# Turn off errexit here so that we don't trip the bug with OSF1/Tru64 +# sh inside this function. +Exit () { set +e; (exit $1); exit $1; } + +# Print warnings (e.g., about skipped and failed tests) to this file number. +# Override by defining to say, 9, in init.cfg, and putting say, +# "export ...ENVVAR_SETTINGS...; exec 9>&2; $(SHELL)" in the definition +# of TESTS_ENVIRONMENT in your tests/Makefile.am file. +# This is useful when using automake's parallel tests mode, to print +# the reason for skip/failure to console, rather than to the .log files. +: ${stderr_fileno_=2} + +warn_() { echo "$@" 1>&$stderr_fileno_; } +fail_() { warn_ "$ME_: failed test: $@"; Exit 1; } +skip_() { warn_ "$ME_: skipped test: $@"; Exit 77; } +framework_failure_() { warn_ "$ME_: set-up failure: $@"; Exit 99; } + +# Sanitize this shell to POSIX mode, if possible. +DUALCASE=1; export DUALCASE +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then + emulate sh + NULLCMD=: + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in + *posix*) set -o posix ;; + esac +fi + # We require $(...) support unconditionally. # We require a few additional shell features only when $EXEEXT is nonempty, # in order to support automatic $EXEEXT emulation: # - hyphen-containing alias names # - we prefer to use ${var#...} substitution, rather than having # to work around lack of support for that feature. -# The following code attempts to find a shell with support for these features -# and re-exec's it. If not, it skips the current test. +# The following code attempts to find a shell with support for these features. +# If the current shell passes the test, we're done. Otherwise, test other +# shells until we find one that passes. If one is found, re-exec it. +# If no acceptable shell is found, skip the current test. +# +# The "...set -x; P=1 true 2>err..." test is to disqualify any shell that +# emits "P=1" into err, as /bin/sh from SunOS 5.11 and OpenBSD 4.7 do. +# +# Use "9" to indicate success (rather than 0), in case some shell acts +# like Solaris 10's /bin/sh but exits successfully instead of with status 2. +# Eval this code in a subshell to determine a shell's suitability. +# 10 - passes all tests; ok to use +# 9 - ok, but enabling "set -x" corrupts application stderr; prefer higher score +# ? - not ok gl_shell_test_script_=' test $(echo y) = y || exit 1 -test -z "$EXEEXT" && exit 0 +score_=10 +if test "$VERBOSE" = yes; then + test -n "$( (exec 3>&1; set -x; P=1 true 2>&3) 2> /dev/null)" && score_=9 +fi +test -z "$EXEEXT" && exit $score_ shopt -s expand_aliases alias a-b="echo zoo" v=abx test ${v%x} = ab \ && test ${v#a} = bx \ - && test $(a-b) = zoo + && test $(a-b) = zoo \ + && exit $score_ ' if test "x$1" = "x--no-reexec"; then shift else - for re_shell_ in "${CONFIG_SHELL:-no_shell}" /bin/sh bash dash zsh pdksh fail + # Assume a working shell. Export to subshells (setup_ needs this). + gl_set_x_corrupts_stderr_=false + export gl_set_x_corrupts_stderr_ + + # Record the first marginally acceptable shell. + marginal_= + + # Search for a shell that meets our requirements. + for re_shell_ in __current__ "${CONFIG_SHELL:-no_shell}" \ + /bin/sh bash dash zsh pdksh fail do test "$re_shell_" = no_shell && continue - test "$re_shell_" = fail && skip_ failed to find an adequate shell - if "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null; then - exec "$re_shell_" "$0" --no-reexec "$@" - echo "$ME_: exec failed" 1>&2 - exit 127 + + # If we've made it all the way to the sentinel, "fail" without + # finding even a marginal shell, skip this test. + if test "$re_shell_" = fail; then + test -z "$marginal_" && skip_ failed to find an adequate shell + re_shell_=$marginal_ + break + fi + + # When testing the current shell, simply "eval" the test code. + # Otherwise, run it via $re_shell_ -c ... + if test "$re_shell_" = __current__; then + # 'eval'ing this code makes Solaris 10's /bin/sh exit with + # $? set to 2. It does not evaluate any of the code after the + # "unexpected" first `('. Thus, we must run it in a subshell. + ( eval "$gl_shell_test_script_" ) > /dev/null 2>&1 + else + "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null + fi + + st_=$? + + # $re_shell_ works just fine. Use it. + test $st_ = 10 && break + + # If this is our first marginally acceptable shell, remember it. + if test "$st_:$marginal_" = 9: ; then + marginal_="$re_shell_" + gl_set_x_corrupts_stderr_=true fi done + + if test "$re_shell_" != __current__; then + # Found a usable shell. Preserve -v and -x. + case $- in + *v*x* | *x*v*) opts_=-vx ;; + *v*) opts_=-v ;; + *x*) opts_=-x ;; + *) opts_= ;; + esac + exec "$re_shell_" $opts_ "$0" --no-reexec "$@" + echo "$ME_: exec failed" 1>&2 + exit 127 + fi fi test -n "$EXEEXT" && shopt -s expand_aliases -# We use a trap below for cleanup. This requires us to go through -# hoops to get the right exit status transported through the handler. -# So use `Exit STATUS' instead of `exit STATUS' inside of the tests. -# Turn off errexit here so that we don't trip the bug with OSF1/Tru64 -# sh inside this function. -Exit () { set +e; (exit $1); exit $1; } - -# Print warnings (e.g., about skipped and failed tests) to this file number. -# Override by defining to say, 9, in init.cfg, and putting say, -# "export ...ENVVAR_SETTINGS...; exec 9>&2; $(SHELL)" in the definition -# of TESTS_ENVIRONMENT in your tests/Makefile.am file. -# This is useful when using automake's parallel tests mode, to print -# the reason for skip/failure to console, rather than to the .log files. -: ${stderr_fileno_=2} - -warn_() { echo "$@" 1>&$stderr_fileno_; } -fail_() { warn_ "$ME_: failed test: $@"; Exit 1; } -skip_() { warn_ "$ME_: skipped test: $@"; Exit 77; } -framework_failure_() { warn_ "$ME_: set-up failure: $@"; Exit 1; } +# Enable glibc's malloc-perturbing option. +# This is cheap and useful for exposing code that depends on the fact that +# malloc-related functions often return memory that is mostly zeroed. +# If you have the time and cycles, use valgrind to do an even better job. +: ${MALLOC_PERTURB_=87} +export MALLOC_PERTURB_ # This is a stub function that is run upon trap (upon regular exit and # interrupt). Override it with a per-test function, e.g., to unmount # a partition, or to undo any other global state changes. cleanup_() { :; } -if ( diff --version < /dev/null 2>&1 | grep GNU ) 2>&1 > /dev/null; then +if ( diff --version < /dev/null 2>&1 | grep GNU ) > /dev/null 2>&1; then compare() { diff -u "$@"; } -elif ( cmp --version < /dev/null 2>&1 | grep GNU ) 2>&1 > /dev/null; then +elif ( cmp --version < /dev/null 2>&1 | grep GNU ) > /dev/null 2>&1; then compare() { cmp -s "$@"; } else compare() { cmp "$@"; } @@ -150,6 +240,11 @@ find_exe_basenames_() feb_result_= feb_sp_= for feb_file_ in $feb_dir_/*.exe; do + # If there was no *.exe file, or there existed a file named "*.exe" that + # was deleted between the above glob expansion and the existence test + # below, just skip it. + test "x$feb_file_" = "x$feb_dir_/*.exe" && test ! -f "$feb_file_" \ + && continue case $feb_file_ in *[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;; *) # Remove leading file name components as well as the .exe suffix. @@ -167,7 +262,7 @@ find_exe_basenames_() # For each file name of the form PROG.exe, create an alias named # PROG that simply invokes PROG.exe, then return 0. If any selected # file name or the directory name, $1, contains an unexpected character, -# define no function and return 1. +# define no alias and return 1. create_exe_shims_() { case $EXEEXT in @@ -215,20 +310,32 @@ path_prepend_() setup_() { - test "$VERBOSE" = yes && set -x + if test "$VERBOSE" = yes; then + # Test whether set -x may cause the selected shell to corrupt an + # application's stderr. Many do, including zsh-4.3.10 and the /bin/sh + # from SunOS 5.11, OpenBSD 4.7 and Irix 5.x and 6.5. + # If enabling verbose output this way would cause trouble, simply + # issue a warning and refrain. + if $gl_set_x_corrupts_stderr_; then + warn_ "using SHELL=$SHELL with 'set -x' corrupts stderr" + else + set -x + fi + fi initial_cwd_=$PWD - ME_=`expr "./$0" : '.*/\(.*\)$'` pfx_=`testdir_prefix_` test_dir_=`mktempd_ "$initial_cwd_" "$pfx_-$ME_.XXXX"` \ || fail_ "failed to create temporary directory in $initial_cwd_" cd "$test_dir_" - # This pair of trap statements ensures that the temporary directory, - # $test_dir_, is removed upon exit as well as upon catchable signal. - trap remove_tmp_ 0 - trap 'Exit $?' 1 2 13 15 + # 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)' $sig_" + done } # Create a temporary directory, much like mktemp -d does. @@ -259,7 +366,7 @@ rand_bytes_() if test -r "$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 \ - | tr -c $chars_ 01234567$chars_$chars_$chars_ + | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_ return fi @@ -276,7 +383,7 @@ rand_bytes_() echo "$data_" \ | dd bs=1 skip=50 count=$n_ 2>/dev/null \ - | tr -c $chars_ 01234567$chars_$chars_$chars_ + | LC_ALL=C tr -c $chars_ 01234567$chars_$chars_$chars_ } mktempd_() @@ -306,7 +413,7 @@ mktempd_() fail=0 # First, try to use mktemp. - d=`env -i PATH="$PATH" mktemp -d -t -p "$destdir_" "$template_" 2>/dev/null` \ + d=`unset TMPDIR; mktemp -d -t -p "$destdir_" "$template_" 2>/dev/null` \ || fail=1 # The resulting name must be in the specified directory. @@ -353,3 +460,6 @@ test -f "$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