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 $color_tests = yes; then init_colors=' color_map["red"]="[0;31m" # Red. color_map["grn"]="[0;32m" # Green. color_map["lgn"]="[1;32m" # Light green. color_map["blu"]="[1;34m" # Blue. color_map["mgn"]="[0;35m" # Magenta. color_map["std"]="[m" # No color. color_for_result["ERROR"] = "mgn" color_for_result["PASS"] = "grn" color_for_result["XPASS"] = "red" color_for_result["FAIL"] = "red" color_for_result["XFAIL"] = "lgn" color_for_result["SKIP"] = "blu"' else init_colors='' fi # :; is there to work around a bug in bash 3.2 (and earlier) which # does not always set '$?' 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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