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bubblewrap/build-aux/tap-driver.sh

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#! /bin/sh
# Copyright (C) 2011-2018 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, see <https://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.
scriptversion=2013-12-23.17; # UTC
# Make unconditional expansion of undefined variables an error. This
# helps a lot in preventing typo-related bugs.
set -u
me=tap-driver.sh
fatal ()
{
echo "$me: fatal: $*" >&2
exit 1
}
usage_error ()
{
echo "$me: $*" >&2
print_usage >&2
exit 2
}
print_usage ()
{
cat <<END
Usage:
tap-driver.sh --test-name=NAME --log-file=PATH --trs-file=PATH
[--expect-failure={yes|no}] [--color-tests={yes|no}]
[--enable-hard-errors={yes|no}] [--ignore-exit]
[--diagnostic-string=STRING] [--merge|--no-merge]
[--comments|--no-comments] [--] TEST-COMMAND
The '--test-name', '-log-file' and '--trs-file' options are mandatory.
END
}
# TODO: better error handling in option parsing (in particular, ensure
# TODO: $log_file, $trs_file and $test_name are defined).
test_name= # Used for reporting.
log_file= # Where to save the result and output of the test script.
trs_file= # Where to save the metadata of the test run.
expect_failure=0
color_tests=0
merge=0
ignore_exit=0
comments=0
diag_string='#'
while test $# -gt 0; do
case $1 in
--help) print_usage; exit $?;;
--version) echo "$me $scriptversion"; exit $?;;
--test-name) test_name=$2; shift;;
--log-file) log_file=$2; shift;;
--trs-file) trs_file=$2; shift;;
--color-tests) color_tests=$2; shift;;
--expect-failure) expect_failure=$2; shift;;
--enable-hard-errors) shift;; # No-op.
--merge) merge=1;;
--no-merge) merge=0;;
--ignore-exit) ignore_exit=1;;
--comments) comments=1;;
--no-comments) comments=0;;
--diagnostic-string) diag_string=$2; shift;;
--) shift; break;;
-*) usage_error "invalid option: '$1'";;
esac
shift
done
test $# -gt 0 || usage_error "missing test command"
case $expect_failure in
yes) expect_failure=1;;
*) expect_failure=0;;
esac
if test $color_tests = yes; then
init_colors='
color_map["red"]="" # Red.
color_map["grn"]="" # Green.
color_map["lgn"]="" # Light green.
color_map["blu"]="" # Blue.
color_map["mgn"]="" # Magenta.
color_map["std"]="" # No color.
color_for_result["ERROR"] = "mgn"
color_for_result["PASS"] = "grn"
color_for_result["XPASS"] = "red"
color_for_result["FAIL"] = "red"
color_for_result["XFAIL"] = "lgn"
color_for_result["SKIP"] = "blu"'
else
init_colors=''
fi
# :; is there to work around a bug in bash 3.2 (and earlier) which
# does not always set '$?' properly on redirection failure.
# See the Autoconf manual for more details.
:;{
(
# Ignore common signals (in this subshell only!), to avoid potential
# problems with Korn shells. Some Korn shells are known to propagate
# to themselves signals that have killed a child process they were
# waiting for; this is done at least for SIGINT (and usually only for
# it, in truth). Without the `trap' below, such a behaviour could
# cause a premature exit in the current subshell, e.g., in case the
# test command it runs gets terminated by a SIGINT. Thus, the awk
# script we are piping into would never seen the exit status it
# expects on its last input line (which is displayed below by the
# last `echo $?' statement), and would thus die reporting an internal
# error.
# For more information, see the Autoconf manual and the threads:
# <https://lists.gnu.org/archive/html/bug-autoconf/2011-09/msg00004.html>
# <http://mail.opensolaris.org/pipermail/ksh93-integration-discuss/2009-February/004121.html>
trap : 1 3 2 13 15
if test $merge -gt 0; then
exec 2>&1
else
exec 2>&3
fi
"$@"
echo $?
) | LC_ALL=C ${AM_TAP_AWK-awk} \
-v me="$me" \
-v test_script_name="$test_name" \
-v log_file="$log_file" \
-v trs_file="$trs_file" \
-v expect_failure="$expect_failure" \
-v merge="$merge" \
-v ignore_exit="$ignore_exit" \
-v comments="$comments" \
-v diag_string="$diag_string" \
'
# TODO: the usages of "cat >&3" below could be optimized when using
# GNU awk, and/on on systems that supports /dev/fd/.
# Implementation note: in what follows, `result_obj` will be an
# associative array that (partly) simulates a TAP result object
# from the `TAP::Parser` perl module.
## ----------- ##
## FUNCTIONS ##
## ----------- ##
function fatal(msg)
{
print me ": " msg | "cat >&2"
exit 1
}
function abort(where)
{
fatal("internal error " where)
}
# Convert a boolean to a "yes"/"no" string.
function yn(bool)
{
return bool ? "yes" : "no";
}
function add_test_result(result)
{
if (!test_results_index)
test_results_index = 0
test_results_list[test_results_index] = result
test_results_index += 1
test_results_seen[result] = 1;
}
# Whether the test script should be re-run by "make recheck".
function must_recheck()
{
for (k in test_results_seen)
if (k != "XFAIL" && k != "PASS" && k != "SKIP")
return 1
return 0
}
# Whether the content of the log file associated to this test should
# be copied into the "global" test-suite.log.
function copy_in_global_log()
{
for (k in test_results_seen)
if (k != "PASS")
return 1
return 0
}
function get_global_test_result()
{
if ("ERROR" in test_results_seen)
return "ERROR"
if ("FAIL" in test_results_seen || "XPASS" in test_results_seen)
return "FAIL"
all_skipped = 1
for (k in test_results_seen)
if (k != "SKIP")
all_skipped = 0
if (all_skipped)
return "SKIP"
return "PASS";
}
function stringify_result_obj(result_obj)
{
if (result_obj["is_unplanned"] || result_obj["number"] != testno)
return "ERROR"
if (plan_seen == LATE_PLAN)
return "ERROR"
if (result_obj["directive"] == "TODO")
return result_obj["is_ok"] ? "XPASS" : "XFAIL"
if (result_obj["directive"] == "SKIP")
return result_obj["is_ok"] ? "SKIP" : COOKED_FAIL;
if (length(result_obj["directive"]))
abort("in function stringify_result_obj()")
return result_obj["is_ok"] ? COOKED_PASS : COOKED_FAIL
}
function decorate_result(result)
{
color_name = color_for_result[result]
if (color_name)
return color_map[color_name] "" result "" color_map["std"]
# If we are not using colorized output, or if we do not know how
# to colorize the given result, we should return it unchanged.
return result
}
function report(result, details)
{
if (result ~ /^(X?(PASS|FAIL)|SKIP|ERROR)/)
{
msg = ": " test_script_name
add_test_result(result)
}
else if (result == "#")
{
msg = " " test_script_name ":"
}
else
{
abort("in function report()")
}
if (length(details))
msg = msg " " details
# Output on console might be colorized.
print decorate_result(result) msg
# Log the result in the log file too, to help debugging (this is
# especially true when said result is a TAP error or "Bail out!").
print result msg | "cat >&3";
}
function testsuite_error(error_message)
{
report("ERROR", "- " error_message)
}
function handle_tap_result()
{
details = result_obj["number"];
if (length(result_obj["description"]))
details = details " " result_obj["description"]
if (plan_seen == LATE_PLAN)
{
details = details " # AFTER LATE PLAN";
}
else if (result_obj["is_unplanned"])
{
details = details " # UNPLANNED";
}
else if (result_obj["number"] != testno)
{
details = sprintf("%s # OUT-OF-ORDER (expecting %d)",
details, testno);
}
else if (result_obj["directive"])
{
details = details " # " result_obj["directive"];
if (length(result_obj["explanation"]))
details = details " " result_obj["explanation"]
}
report(stringify_result_obj(result_obj), details)
}
# `skip_reason` should be empty whenever planned > 0.
function handle_tap_plan(planned, skip_reason)
{
planned += 0 # Avoid getting confused if, say, `planned` is "00"
if (length(skip_reason) && planned > 0)
abort("in function handle_tap_plan()")
if (plan_seen)
{
# Error, only one plan per stream is acceptable.
testsuite_error("multiple test plans")
return;
}
planned_tests = planned
# The TAP plan can come before or after *all* the TAP results; we speak
# respectively of an "early" or a "late" plan. If we see the plan line
# after at least one TAP result has been seen, assume we have a late
# plan; in this case, any further test result seen after the plan will
# be flagged as an error.
plan_seen = (testno >= 1 ? LATE_PLAN : EARLY_PLAN)
# If testno > 0, we have an error ("too many tests run") that will be
# automatically dealt with later, so do not worry about it here. If
# $plan_seen is true, we have an error due to a repeated plan, and that
# has already been dealt with above. Otherwise, we have a valid "plan
# with SKIP" specification, and should report it as a particular kind
# of SKIP result.
if (planned == 0 && testno == 0)
{
if (length(skip_reason))
skip_reason = "- " skip_reason;
report("SKIP", skip_reason);
}
}
function extract_tap_comment(line)
{
if (index(line, diag_string) == 1)
{
# Strip leading `diag_string` from `line`.
line = substr(line, length(diag_string) + 1)
# And strip any leading and trailing whitespace left.
sub("^[ \t]*", "", line)
sub("[ \t]*$", "", line)
# Return what is left (if any).
return line;
}
return "";
}
# When this function is called, we know that line is a TAP result line,
# so that it matches the (perl) RE "^(not )?ok\b".
function setup_result_obj(line)
{
# Get the result, and remove it from the line.
result_obj["is_ok"] = (substr(line, 1, 2) == "ok" ? 1 : 0)
sub("^(not )?ok[ \t]*", "", line)
# If the result has an explicit number, get it and strip it; otherwise,
# automatically assing the next progresive number to it.
if (line ~ /^[0-9]+$/ || line ~ /^[0-9]+[^a-zA-Z0-9_]/)
{
match(line, "^[0-9]+")
# The final `+ 0` is to normalize numbers with leading zeros.
result_obj["number"] = substr(line, 1, RLENGTH) + 0
line = substr(line, RLENGTH + 1)
}
else
{
result_obj["number"] = testno
}
if (plan_seen == LATE_PLAN)
# No further test results are acceptable after a "late" TAP plan
# has been seen.
result_obj["is_unplanned"] = 1
else if (plan_seen && testno > planned_tests)
result_obj["is_unplanned"] = 1
else
result_obj["is_unplanned"] = 0
# Strip trailing and leading whitespace.
sub("^[ \t]*", "", line)
sub("[ \t]*$", "", line)
# This will have to be corrected if we have a "TODO"/"SKIP" directive.
result_obj["description"] = line
result_obj["directive"] = ""
result_obj["explanation"] = ""
if (index(line, "#") == 0)
return # No possible directive, nothing more to do.
# Directives are case-insensitive.
rx = "[ \t]*#[ \t]*([tT][oO][dD][oO]|[sS][kK][iI][pP])[ \t]*"
# See whether we have the directive, and if yes, where.
pos = match(line, rx "$")
if (!pos)
pos = match(line, rx "[^a-zA-Z0-9_]")
# If there was no TAP directive, we have nothing more to do.
if (!pos)
return
# Let`s now see if the TAP directive has been escaped. For example:
# escaped: ok \# SKIP
# not escaped: ok \\# SKIP
# escaped: ok \\\\\# SKIP
# not escaped: ok \ # SKIP
if (substr(line, pos, 1) == "#")
{
bslash_count = 0
for (i = pos; i > 1 && substr(line, i - 1, 1) == "\\"; i--)
bslash_count += 1
if (bslash_count % 2)
return # Directive was escaped.
}
# Strip the directive and its explanation (if any) from the test
# description.
result_obj["description"] = substr(line, 1, pos - 1)
# Now remove the test description from the line, that has been dealt
# with already.
line = substr(line, pos)
# Strip the directive, and save its value (normalized to upper case).
sub("^[ \t]*#[ \t]*", "", line)
result_obj["directive"] = toupper(substr(line, 1, 4))
line = substr(line, 5)
# Now get the explanation for the directive (if any), with leading
# and trailing whitespace removed.
sub("^[ \t]*", "", line)
sub("[ \t]*$", "", line)
result_obj["explanation"] = line
}
function get_test_exit_message(status)
{
if (status == 0)
return ""
if (status !~ /^[1-9][0-9]*$/)
abort("getting exit status")
if (status < 127)
exit_details = ""
else if (status == 127)
exit_details = " (command not found?)"
else if (status >= 128 && status <= 255)
exit_details = sprintf(" (terminated by signal %d?)", status - 128)
else if (status > 256 && status <= 384)
# We used to report an "abnormal termination" here, but some Korn
# shells, when a child process die due to signal number n, can leave
# in $? an exit status of 256+n instead of the more standard 128+n.
# Apparently, both behaviours are allowed by POSIX (2008), so be
# prepared to handle them both. See also Austing Group report ID
# 0000051 <http://www.austingroupbugs.net/view.php?id=51>
exit_details = sprintf(" (terminated by signal %d?)", status - 256)
else
# Never seen in practice.
exit_details = " (abnormal termination)"
return sprintf("exited with status %d%s", status, exit_details)
}
function write_test_results()
{
print ":global-test-result: " get_global_test_result() > trs_file
print ":recheck: " yn(must_recheck()) > trs_file
print ":copy-in-global-log: " yn(copy_in_global_log()) > trs_file
for (i = 0; i < test_results_index; i += 1)
print ":test-result: " test_results_list[i] > trs_file
close(trs_file);
}
BEGIN {
## ------- ##
## SETUP ##
## ------- ##
'"$init_colors"'
# Properly initialized once the TAP plan is seen.
planned_tests = 0
COOKED_PASS = expect_failure ? "XPASS": "PASS";
COOKED_FAIL = expect_failure ? "XFAIL": "FAIL";
# Enumeration-like constants to remember which kind of plan (if any)
# has been seen. It is important that NO_PLAN evaluates "false" as
# a boolean.
NO_PLAN = 0
EARLY_PLAN = 1
LATE_PLAN = 2
testno = 0 # Number of test results seen so far.
bailed_out = 0 # Whether a "Bail out!" directive has been seen.
# Whether the TAP plan has been seen or not, and if yes, which kind
# it is ("early" is seen before any test result, "late" otherwise).
plan_seen = NO_PLAN
## --------- ##
## PARSING ##
## --------- ##
is_first_read = 1
while (1)
{
# Involutions required so that we are able to read the exit status
# from the last input line.
st = getline
if (st < 0) # I/O error.
fatal("I/O error while reading from input stream")
else if (st == 0) # End-of-input
{
if (is_first_read)
abort("in input loop: only one input line")
break
}
if (is_first_read)
{
is_first_read = 0
nextline = $0
continue
}
else
{
curline = nextline
nextline = $0
$0 = curline
}
# Copy any input line verbatim into the log file.
print | "cat >&3"
# Parsing of TAP input should stop after a "Bail out!" directive.
if (bailed_out)
continue
# TAP test result.
if ($0 ~ /^(not )?ok$/ || $0 ~ /^(not )?ok[^a-zA-Z0-9_]/)
{
testno += 1
setup_result_obj($0)
handle_tap_result()
}
# TAP plan (normal or "SKIP" without explanation).
else if ($0 ~ /^1\.\.[0-9]+[ \t]*$/)
{
# The next two lines will put the number of planned tests in $0.
sub("^1\\.\\.", "")
sub("[^0-9]*$", "")
handle_tap_plan($0, "")
continue
}
# TAP "SKIP" plan, with an explanation.
else if ($0 ~ /^1\.\.0+[ \t]*#/)
{
# The next lines will put the skip explanation in $0, stripping
# any leading and trailing whitespace. This is a little more
# tricky in truth, since we want to also strip a potential leading
# "SKIP" string from the message.
sub("^[^#]*#[ \t]*(SKIP[: \t][ \t]*)?", "")
sub("[ \t]*$", "");
handle_tap_plan(0, $0)
}
# "Bail out!" magic.
# Older versions of prove and TAP::Harness (e.g., 3.17) did not
# recognize a "Bail out!" directive when preceded by leading
# whitespace, but more modern versions (e.g., 3.23) do. So we
# emulate the latter, "more modern" behaviour.
else if ($0 ~ /^[ \t]*Bail out!/)
{
bailed_out = 1
# Get the bailout message (if any), with leading and trailing
# whitespace stripped. The message remains stored in `$0`.
sub("^[ \t]*Bail out![ \t]*", "");
sub("[ \t]*$", "");
# Format the error message for the
bailout_message = "Bail out!"
if (length($0))
bailout_message = bailout_message " " $0
testsuite_error(bailout_message)
}
# Maybe we have too look for dianogtic comments too.
else if (comments != 0)
{
comment = extract_tap_comment($0);
if (length(comment))
report("#", comment);
}
}
## -------- ##
## FINISH ##
## -------- ##
# A "Bail out!" directive should cause us to ignore any following TAP
# error, as well as a non-zero exit status from the TAP producer.
if (!bailed_out)
{
if (!plan_seen)
{
testsuite_error("missing test plan")
}
else if (planned_tests != testno)
{
bad_amount = testno > planned_tests ? "many" : "few"
testsuite_error(sprintf("too %s tests run (expected %d, got %d)",
bad_amount, planned_tests, testno))
}
if (!ignore_exit)
{
# Fetch exit status from the last line.
exit_message = get_test_exit_message(nextline)
if (exit_message)
testsuite_error(exit_message)
}
}
write_test_results()
exit 0
} # End of "BEGIN" block.
'
# TODO: document that we consume the file descriptor 3 :-(
} 3>"$log_file"
test $? -eq 0 || fatal "I/O or internal error"
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:
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