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linux/scripts/dtc/of_unittest_expect
Frank Rowand 568a10bfff of: add processing of EXPECT_NOT to of_unittest_expect 
scripts/dtc/of_unittest_expect processes EXPECT messages that
document expected kernel messages triggered by unittest.  Add
processing of EXPECT_NOT messages that document kernel messages
triggered by unittest that are not expected.

This is commit 2 of 2, implementing the processing of EXPECT_NOT
messages.

Signed-off-by: Frank Rowand <frowand.list@gmail.com>
Link: https://lore.kernel.org/r/20230213185702.395776-3-frowand.list@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
2023-02-17 15:46:20 -06:00

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#!/usr/bin/perl
# SPDX-License-Identifier: GPL-2.0
#
# Copyright 2020, 2022 Sony Corporation
#
# Author: Frank Rowand
# This program is meant to be an aid to reading the verbose output of
# on the console log that results from executing the Linux kernel
# devicetree unittest (drivers/of/unitest.c).
$VUFX = "230211a";
use strict 'refs';
use strict subs;
use Getopt::Long;
use Text::Wrap;
# strip off everything before final "/"
(undef, $script_name) = split(/^.*\//, $0);
# following /usr/include/sysexits.h
$EX_OK=0;
$EX_USAGE=64;
#______________________________________________________________________________
sub compare {
my ($expect, $got) = @_;
my $expect_next;
my $expect_next_lit;
my $got_next;
my $type;
while ($expect) {
($expect_next, $type) = split(/<</, $expect);
($type) = split(/>>/, $type);
$expect =~ s/^.*?>>//; # '?' is non-greedy, minimal match
# literal, ignore all metacharacters when used in a regex
$expect_next_lit = quotemeta($expect_next);
$got_next = $got;
$got_next =~ s/^($expect_next_lit).*/\1/;
$got =~ s/^$expect_next_lit//;
if ($expect_next ne $got_next) {
return 0;
}
if ($type eq "int") {
if ($got =~ /^[+-]*[0-9]+/) {
$got =~ s/^[+-]*[0-9]+//;
} else {
return 0;
}
} elsif ($type eq "hex") {
if ($got =~ /^(0x)*[0-9a-f]+/) {
$got =~ s/^(0x)*[0-9a-f]+//;
} else {
return 0;
}
} elsif ($type eq "all") {
return 1;
} elsif ($type eq "") {
if ($expect_next ne $got_next) {
return 0;
} else {
return 1;
}
} else {
$internal_err++;
print "** ERROR: special pattern not recognized: <<$type>>, CONSOLE_LOG line: $.\n";
return 0;
}
}
# should not get here
$internal_err++;
print "** ERROR: $script_name internal error, at end of compare(), CONSOLE_LOG line: $.\n";
return 0;
}
#______________________________________________________________________________
sub usage {
# ***** when editing, be careful to not put tabs in the string printed:
print STDERR
"
usage:
$script_name CONSOLE_LOG
-h print program usage
--help print program usage
--hide-expect suppress output of EXPECTed lines
--line-num report line number of CONSOLE_LOG
--no-expect-stats do not report EXPECT statistics
--no-strip-ts do not strip leading console timestamps
--verbose do not suppress EXPECT begin and end lines
--version print program version and exit
Process a console log for EXPECTed test related messages to either
highlight expected devicetree unittest related messages or suppress
the messages. Leading console timestamps will be stripped.
Various unittests may trigger kernel messages from outside the
unittest code. The unittest annotates that it expects the message
to occur with an 'EXPECT \\ : text' (begin) before triggering the
message, and an 'EXPECT / : text' (end) after triggering the message.
If an expected message does not occur, that will be reported.
For each expected message, the 'EXPECT \\ : text' (begin) and
'EXPECT / : text' (end), 'text' will contain the message text.
If 'EXPECT \\' (begin) and 'EXPECT /' (end) lines do not contain
matching 'text', that will be reported.
If EXPECT lines are nested, 'EXPECT /' (end) lines must be in the
reverse order of the corresponding 'EXPECT \\' (begin) lines.
'EXPECT \\ : text' (begin) and 'EXPECT / : text' (end) lines can
contain special patterns in 'text':
<<int>> matches: [+-]*[0-9]+
<<hex>> matches: (0x)*[0-9a-f]+
<<all>> matches: anything to end of line
'EXPECT \\' (begin) and 'EXPECT /' (end) lines are suppressed.
A prefix is added to every line of output:
'ok ' Line matches an enclosing EXPECT begin/end pair
'** ' Line reports $script_name warning or error
'-> ' Line reports start or end of the unittests
'>> ' Line reports a unittest test FAIL
' ' Lines that are not otherwise prefixed
Issues detected in CONSOLE_LOG are reported to STDOUT, not to STDERR.
Known Issues:
--line-num causes the CONSOLE_LOG line number to be printed in 4 columns.
If CONSOLE_LOG contains more than 9999 lines then more columns will be
used to report the line number for lines greater than 9999 (eg for
lines 10000 - 99999, 5 columns will be used).
";
return {};
}
#______________________________________________________________________________
#______________________________________________________________________________
if (!GetOptions(
"h" => \$help,
"help" => \$help,
"hide-expect" => \$hide_expect,
"line-num" => \$print_line_num,
"no-expect-stats" => \$no_expect_stats,
"no-strip-ts" => \$no_strip_ts,
"verbose" => \$verbose,
"version" => \$version,
)) {
print STDERR "\n";
print STDERR "ERROR processing command line options\n";
print STDERR "\n";
print STDERR "For help, type '$script_name --help'\n";
print STDERR "\n";
exit $EX_OK;
}
if ($no_strip_ts) {
$strip_ts = 1;
$no_strip_ts = 0;
} else {
$strip_ts = 0;
$no_strip_ts = 1;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
if ($help){
&usage;
exit $EX_OK;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
if ($version) {
print STDERR "\n$script_name $VUFX\n\n";
print STDERR "\n";
exit $EX_OK;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
if ($#ARGV != 0) {
# Limit input files to exactly one.
#
# 'while ($line = <ARGV>) {' in the code below supports multiple file
# names on the command line, but the EXPECT statistics are reported
# once for all input - it is not an expected use case to generate one
# set of statistics for multiple input files.
print STDERR "\n";
print STDERR "Required arguments: CONSOLE_LOG\n";
print STDERR "\n";
exit $EX_USAGE;
}
#______________________________________________________________________________
# Patterns to match 'EXPECT \ : ' (begin) and 'EXPECT / : ' (end)
#
# $exp_* are used as regex match patterns,
# so '\\\\' in $exp_begin matches a single '\'
# quotemeta() does not do the right thing in this case
#
# $pr_fmt is the prefix that unittest prints for every message
$pr_fmt = "### dt-test ### ";
$exp_begin = "${pr_fmt}EXPECT \\\\ : ";
$exp_end = "${pr_fmt}EXPECT / : ";
$expnot_begin = "${pr_fmt}EXPECT_NOT \\\\ : ";
$expnot_end = "${pr_fmt}EXPECT_NOT / : ";
$line_num = "";
$timestamp = "";
LINE:
while ($line = <ARGV>) {
chomp $line;
$suppress_line = 0;
$prefix = " "; ## 2 characters
if ($strip_ts) {
$timestamp = $line;
if ($timestamp =~ /^\[\s*[0-9]+\.[0-9]*\] /) {
($timestamp, $null) = split(/]/, $line);
$timestamp = $timestamp . "] ";
} else {
$timestamp = "";
}
}
$line =~ s/^\[\s*[0-9]+\.[0-9]*\] //;
# ----- find EXPECT begin
if ($line =~ /^\s*$exp_begin/) {
$data = $line;
$data =~ s/^\s*$exp_begin//;
push @exp_begin_stack, $data;
if ($verbose) {
if ($print_line_num) {
$line_num = sprintf("%4s ", $.);
}
printf "%s %s%s%s\n", $prefix, $line_num, $timestamp, $line;
}
next LINE;
}
# ----- find EXPECT end
if ($line =~ /^\s*$exp_end/) {
$data = $line;
$data =~ s/^\s*$exp_end//;
if ($verbose) {
if ($print_line_num) {
$line_num = sprintf("%4s ", $.);
}
printf "%s %s%s%s\n", $prefix, $line_num, $timestamp, $line;
}
$found = 0;
$no_begin = 0;
if (@exp_found_or_begin > 0) {
$begin = pop @exp_found_or_begin;
if (compare($data, $begin)) {
$found = 1;
$exp_found++;
}
} elsif (@begin > 0) {
$begin = pop @exp_begin_stack;
} else {
$no_begin = 1;
}
if ($no_begin) {
$exp_missing_begin++;
print "** ERROR: EXPECT end without matching EXPECT begin:\n";
print " end ---> $line\n";
} elsif (! $found) {
if ($print_line_num) {
$line_num = sprintf("%4s ", $.);
}
$exp_missing++;
printf "** %s%s$script_name WARNING - not found ---> %s\n",
$line_num, $timestamp, $data;
} elsif (! compare($data, $begin) and ($data ne $begin)) {
$exp_missing_end++;
print "** ERROR: EXPECT end does not match EXPECT begin:\n";
print " begin -> $begin\n";
print " end ---> $line\n";
}
next LINE;
}
# ----- find EXPECT_NOT begin
if ($line =~ /^\s*$expnot_begin/) {
$data = $line;
$data =~ s/^\s*$expnot_begin//;
push @expnot_begin_stack, $data;
if ($verbose) {
if ($print_line_num) {
$line_num = sprintf("%4s ", $.);
}
printf "%s %s%s%s\n", $prefix, $line_num, $timestamp, $line;
}
next LINE;
}
# ----- find EXPECT_NOT end
if ($line =~ /^\s*$expnot_end/) {
$data = $line;
$data =~ s/^\s*$expnot_end//;
if ($verbose) {
if ($print_line_num) {
$line_num = sprintf("%4s ", $.);
}
printf "%s %s%s%s\n", $prefix, $line_num, $timestamp, $line;
}
$found = 0;
$no_begin = 0;
if (@expnot_found_or_begin > 0) {
$begin = pop @expnot_found_or_begin;
if (compare($data, $begin)) {
$found = 1;
$expnot_found++;
}
} elsif (@expnot_begin_stack <= 0) {
$no_begin = 1;
}
if ($no_begin) {
$expnot_missing_begin++;
print "** ERROR: EXPECT_NOT end without matching EXPECT_NOT begin:\n";
print " end ---> $line\n";
}
if ($found) {
if ($print_line_num) {
$line_num = sprintf("%4s ", $.);
}
printf "** %s%s$script_name WARNING - next line matches EXPECT_NOT\n",
$line_num, $timestamp;
printf "** %s%s%s\n", $line_num, $timestamp, $line;
} else {
$expnot_missing++;
}
if (@expnot_begin_stack > 0) {
$begin = pop @expnot_begin_stack;
if (! compare($data, $begin) and ($data ne $begin)) {
$expnot_missing_end++;
print "** ERROR: EXPECT_NOT end does not match EXPECT_NOT begin:\n";
print " begin -> $begin\n";
print " end ---> $line\n";
}
}
next LINE;
}
# ----- not an EXPECT line
if (($line =~ /^${pr_fmt}start of unittest - you will see error messages$/) ||
($line =~ /^${pr_fmt}end of unittest - [0-9]+ passed, [0-9]+ failed$/ ) ) {
$prefix = "->"; # 2 characters
} elsif ($line =~ /^${pr_fmt}FAIL /) {
$unittest_fail++;
$prefix = ">>"; # 2 characters
}
$found = 0;
foreach $begin (@exp_begin_stack) {
if (compare($begin, $line)) {
$found = 1;
last;
}
}
if ($found) {
$begin = shift @exp_begin_stack;
while (! compare($begin, $line)) {
push @exp_found_or_begin, $begin;
$begin = shift @exp_begin_stack;
}
push @exp_found_or_begin, $line;
if ($hide_expect) {
$suppress_line = 1;
}
$prefix = "ok"; # 2 characters
}
$found = 0;
foreach $begin (@expnot_begin_stack) {
if (compare($begin, $line)) {
$found = 1;
last;
}
}
if ($found) {
$begin = shift @begin;
while (! compare($begin, $line)) {
push @expnot_found_or_begin, $begin;
$begin = shift @begin;
}
push @expnot_found_or_begin, $line;
if ($hide_expect) {
$suppress_line = 1;
}
$prefix = "**"; # 2 characters
}
if ($suppress_line) {
next LINE;
}
if ($print_line_num) {
$line_num = sprintf("%4s ", $.);
}
printf "%s %s%s%s\n", $prefix, $line_num, $timestamp, $line;
}
if (! $no_expect_stats) {
print "\n";
print "** EXPECT statistics:\n";
print "**\n";
printf "** non-zero values expected:\n";
print "**\n";
printf "** EXPECT found : %4i\n", $exp_found;
printf "** EXPECT_NOT not found : %4i\n", $expnot_missing;
print "**\n";
printf "** zero values expected:\n";
print "**\n";
printf "** EXPECT not found : %4i\n", $exp_missing;
printf "** missing EXPECT begin : %4i\n", $exp_missing_begin;
printf "** missing EXPECT end : %4i\n", $exp_missing_end;
print "**\n";
printf "** EXPECT_NOT found : %4i\n", $expnot_found;
printf "** missing EXPECT_NOT begin : %4i\n", $expnot_missing_begin;
printf "** missing EXPECT_NOT end : %4i\n", $expnot_missing_end;
print "**\n";
printf "** unittest FAIL : %4i\n", $unittest_fail;
printf "** internal error : %4i\n", $internal_err;
}
if (@exp_begin_stack) {
print "** ERROR: EXPECT begin without matching EXPECT end:\n";
print " This list may be misleading.\n";
foreach $begin (@exp_begin_stack) {
print " begin ---> $begin\n";
}
}
if (@expnot_begin_stack) {
print "** ERROR: EXPECT_NOT begin without matching EXPECT_NOT end:\n";
print " This list may be misleading.\n";
foreach $begin (@expnot_begin_stack) {
print " begin ---> $begin\n";
}
}
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