X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=tests%2Finit.sh;fp=tests%2Finit.sh;h=f525a7cab4c197d7ef80fcf9a6830e4b712df524;hb=dc84183747ce1703eb99685b5dbde1f65a143c06;hp=979eb3c478afc94af52d1eb04737b85897672e2b;hpb=a2016c1de6e4884f6c8ed5cc498f3bf821c25ca4;p=debian%2Fgzip diff --git a/tests/init.sh b/tests/init.sh index 979eb3c..f525a7c 100644 --- a/tests/init.sh +++ b/tests/init.sh @@ -1,6 +1,6 @@ # source this file; set up for tests -# Copyright (C) 2009, 2010 Free Software Foundation, Inc. +# Copyright (C) 2009-2012 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 @@ -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. @@ -52,35 +57,283 @@ # 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. +# 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 $1; } -fail_() { echo "$ME_: failed test: $@" 1>&2; Exit 1; } -skip_() { echo "$ME_: skipped test: $@" 1>&2; Exit 77; } +# 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...; $(SHELL) 9>&2 +# 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. +: ${stderr_fileno_=2} + +# Note that correct expansion of "$*" depends on IFS starting with ' '. +# Always write the full diagnostic to stderr. +# When stderr_fileno_ is not 2, also emit the first line of the +# diagnostic to that file descriptor. +warn_ () +{ + # If IFS does not start with ' ', set it and emit the warning in a subshell. + case $IFS in + ' '*) printf '%s\n' "$*" >&2 + test $stderr_fileno_ = 2 \ + || { printf '%s\n' "$*" | sed 1q >&$stderr_fileno_ ; } ;; + *) (IFS=' '; warn_ "$@");; + esac +} +fail_ () { warn_ "$ME_: failed test: $@"; Exit 1; } +skip_ () { warn_ "$ME_: skipped test: $@"; Exit 77; } +fatal_ () { warn_ "$ME_: hard error: $@"; Exit 99; } +framework_failure_ () { warn_ "$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. +# 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 app stderr; prefer higher score +# ? - not ok +gl_shell_test_script_=' +test $(echo y) = y || exit 1 +score_=10 +if test "$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 \ + && exit $score_ +' + +if test "x$1" = "x--no-reexec"; then + shift +else + # Assume a working shell. Export to subshells (setup_ needs this). + gl_set_x_corrupts_stderr_=false + export gl_set_x_corrupts_stderr_ + + # Record the first marginally acceptable shell. + marginal_= + + # Search for a shell that meets our requirements. + for re_shell_ in __current__ "${CONFIG_SHELL:-no_shell}" \ + /bin/sh bash dash zsh pdksh fail + do + test "$re_shell_" = no_shell && continue + + # If we've made it all the way to the sentinel, "fail" without + # finding even a marginal shell, skip this test. + if test "$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. + if test $st_ = 10; then + gl_set_x_corrupts_stderr_=false + break + fi + + # If this is our first marginally acceptable shell, remember it. + if test "$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 "$ME_: exec failed" 1>&2 + exit 127 + fi +fi + +# If this is bash, turn off all aliases. +test -n "$BASH_VERSION" && unalias -a + +# Note that when supporting $EXEEXT (transparently mapping from PROG_NAME to +# PROG_NAME.exe), we want to support hyphen-containing names like test-acos. +# That is part of the shell-selection test above. Why use aliases rather +# than functions? Because support for hyphen-containing aliases is more +# widespread than that for hyphen-containing function names. +test -n "$EXEEXT" && shopt -s expand_aliases + +# Enable glibc's malloc-perturbing option. +# This is 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_() { :; } +cleanup_ () { :; } + +# Emit a header similar to that from diff -u; Print the simulated "diff" +# command so that the order of arguments is clear. Don't bother with @@ lines. +emit_diff_u_header_ () +{ + printf '%s\n' "diff -u $*" \ + "--- $1 1970-01-01" \ + "+++ $2 1970-01-01" +} + +# Arrange not to let diff or cmp operate on /dev/null, +# since on some systems (at least OSF/1 5.1), that doesn't work. +# When there are not two arguments, or no argument is /dev/null, return 2. +# When one argument is /dev/null and the other is not empty, +# cat the nonempty file to stderr and return 1. +# Otherwise, return 0. +compare_dev_null_ () +{ + test $# = 2 || return 2 + + if test "x$1" = x/dev/null; then + test -s "$2" || return 0 + emit_diff_u_header_ "$@"; sed 's/^/+/' "$2" + return 1 + fi + + if test "x$2" = x/dev/null; then + test -s "$1" || return 0 + emit_diff_u_header_ "$@"; sed 's/^/-/' "$1" + return 1 + fi -if ( diff --version < /dev/null 2>&1 | grep GNU ) 2>&1 > /dev/null; then - compare() { diff -u "$@"; } -elif ( cmp --version < /dev/null 2>&1 | grep GNU ) 2>&1 > /dev/null; then - compare() { cmp -s "$@"; } + return 2 +} + +if diff_out_=`exec 2>/dev/null; diff -u "$0" "$0" < /dev/null` \ + && diff -u Makefile "$0" 2>/dev/null | grep '^[+]#!' >/dev/null; then + # diff accepts the -u option and does not (like AIX 7 'diff') produce an + # extra space on column 1 of every content line. + if test -z "$diff_out_"; then + compare_ () { diff -u "$@"; } + else + compare_ () + { + if diff -u "$@" > diff.out; then + # No differences were found, but Solaris 'diff' produces output + # "No differences encountered". Hide this output. + rm -f diff.out + true + else + cat diff.out + rm -f diff.out + false + fi + } + fi +elif diff_out_=`exec 2>/dev/null; diff -c "$0" "$0" < /dev/null`; then + if test -z "$diff_out_"; then + compare_ () { diff -c "$@"; } + else + compare_ () + { + if diff -c "$@" > diff.out; then + # No differences were found, but AIX and HP-UX 'diff' produce output + # "No differences encountered" or "There are no differences between the + # files.". Hide this output. + rm -f diff.out + true + else + cat diff.out + rm -f diff.out + false + fi + } + fi +elif ( cmp --version < /dev/null 2>&1 | grep GNU ) > /dev/null 2>&1; then + compare_ () { cmp -s "$@"; } else - compare() { cmp "$@"; } + compare_ () { cmp "$@"; } fi +# Usage: compare EXPECTED ACTUAL +# +# Given compare_dev_null_'s preprocessing, defer to compare_ if 2 or more. +# Otherwise, propagate $? to caller: any diffs have already been printed. +compare () +{ + # This looks like it can be factored to use a simple "case $?" + # after unchecked compare_dev_null_ invocation, but that would + # fail in a "set -e" environment. + if compare_dev_null_ "$@"; then + return 0 + else + case $? in + 1) return 1;; + *) compare_ "$@";; + esac + fi +} + # An arbitrary prefix to help distinguish test directories. -testdir_prefix_() { printf gt; } +testdir_prefix_ () { printf gt; } # Run the user-overridable cleanup_ function, remove the temporary # directory and exit with the incoming value of $?. -remove_tmp_() +remove_tmp_ () { __st=$? cleanup_ @@ -92,9 +345,66 @@ remove_tmp_() exit $__st } +# Given a directory name, DIR, if every entry in it that matches *.exe +# contains only the specified bytes (see the case stmt below), then print +# a space-separated list of those names and return 0. Otherwise, don't +# print anything and return 1. Naming constraints apply also to DIR. +find_exe_basenames_ () +{ + feb_dir_=$1 + feb_fail_=0 + 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 + # Exempt [.exe, since we can't create a function by that name, yet + # we can't invoke [ by PATH search anyways due to shell builtins. + test "x$feb_file_" = "x$feb_dir_/[.exe" && continue + case $feb_file_ in + *[!-a-zA-Z/0-9_.+]*) feb_fail_=1; break;; + *) # Remove leading file name components as well as the .exe suffix. + feb_file_=${feb_file_##*/} + feb_file_=${feb_file_%.exe} + feb_result_="$feb_result_$feb_sp_$feb_file_";; + esac + feb_sp_=' ' + done + test $feb_fail_ = 0 && printf %s "$feb_result_" + return $feb_fail_ +} + +# Consider the files in directory, $1. +# 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 alias and return 1. +create_exe_shims_ () +{ + case $EXEEXT in + '') return 0 ;; + .exe) ;; + *) echo "$0: unexpected \$EXEEXT value: $EXEEXT" 1>&2; return 1 ;; + esac + + base_names_=`find_exe_basenames_ $1` \ + || { echo "$0 (exe_shim): skipping directory: $1" 1>&2; return 0; } + + if test -n "$base_names_"; then + for base_ in $base_names_; do + alias "$base_"="$base_$EXEEXT" + done + fi + + return 0 +} + # Use this function to prepend to PATH an absolute name for each -# specified, possibly-$initial_cwd_relative, directory. -path_prepend_() +# specified, possibly-$initial_cwd_-relative, directory. +path_prepend_ () { while test $# != 0; do path_dir_=$1 @@ -108,27 +418,50 @@ path_prepend_() *:*) fail_ "invalid path dir: '$abs_path_dir_'";; esac PATH="$abs_path_dir_:$PATH" + + # Create an alias, FOO, for each FOO.exe in this directory. + create_exe_shims_ "$abs_path_dir_" \ + || fail_ "something failed (above): $abs_path_dir_" shift done export PATH } -setup_() +setup_ () { - test "$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" : '.*/\(.*\)$'` + fail=0 pfx_=`testdir_prefix_` test_dir_=`mktempd_ "$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 + # 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. @@ -147,7 +480,7 @@ setup_() # - make only $MAX_TRIES_ attempts # Helper function. Print $N pseudo-random bytes from a-zA-Z0-9. -rand_bytes_() +rand_bytes_ () { n_=$1 @@ -159,7 +492,7 @@ rand_bytes_() if test -r "$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 @@ -176,14 +509,14 @@ 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_() +mktempd_ () { case $# in 2);; - *) fail_ "Usage: $ME DIR TEMPLATE";; + *) fail_ "Usage: mktempd_ DIR TEMPLATE";; esac destdir_=$1 @@ -200,13 +533,12 @@ mktempd_() case $template_ in *XXXX) ;; - *) fail_ "invalid template: $template_ (must have a suffix of at least 4 X's)";; + *) fail_ \ + "invalid template: $template_ (must have a suffix of at least 4 X's)";; esac - fail=0 - # First, try to use mktemp. - d=`env -u TMPDIR mktemp -d -t -p "$destdir_" "$template_" 2>/dev/null` \ + d=`unset TMPDIR; { mktemp -d -t -p "$destdir_" "$template_"; } 2>/dev/null` \ || fail=1 # The resulting name must be in the specified directory. @@ -253,3 +585,6 @@ test -f "$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