1 # -*- Mode: cperl; cperl-indent-level: 4 -*-
2 # $Id: Straps.pm,v 1.11 2002/06/16 06:55:10 schwern Exp $
4 package Test::Harness::Straps;
11 use Test::Harness::Assert;
12 use Test::Harness::Iterator;
14 # Flags used as return values from our methods. Just for internal
24 Test::Harness::Straps - detailed analysis of test results
28 use Test::Harness::Straps;
30 my $strap = Test::Harness::Straps->new;
32 # Various ways to interpret a test
33 my %results = $strap->analyze($name, \@test_output);
34 my %results = $strap->analyze_fh($name, $test_filehandle);
35 my %results = $strap->analyze_file($test_file);
38 my %total = $strap->total_results;
40 # Altering the behavior of the strap UNIMPLEMENTED
41 my $verbose_output = $strap->dump_verbose();
42 $strap->dump_verbose_fh($output_filehandle);
47 B<THIS IS ALPHA SOFTWARE> in that the interface is subject to change
48 in incompatible ways. It is otherwise stable.
50 Test::Harness is limited to printing out its results. This makes
51 analysis of the test results difficult for anything but a human. To
52 make it easier for programs to work with test results, we provide
53 Test::Harness::Straps. Instead of printing the results, straps
54 provide them as raw data. You can also configure how the tests are to
57 The interface is currently incomplete. I<Please> contact the author
58 if you'd like a feature added or something change or just have
67 my $strap = Test::Harness::Straps->new;
69 Initialize a new strap.
75 my($class) = ref $proto || $proto;
77 my $self = bless {}, $class;
89 Initialize the internal state of a strap to make it ready for parsing.
96 $self->{_is_vms} = $^O eq 'VMS';
109 my %results = $strap->analyze($name, \@test_output);
111 Analyzes the output of a single test, assigning it the given $name for
112 use in the total report. Returns the %results of the test. See
115 @test_output should be the raw output from the test, including newlines.
120 my($self, $name, $test_output) = @_;
122 my $it = Test::Harness::Iterator->new($test_output);
123 return $self->_analyze_iterator($name, $it);
127 sub _analyze_iterator {
128 my($self, $name, $it) = @_;
130 $self->_reset_file_state;
131 $self->{file} = $name;
144 # Set them up here so callbacks can have them.
145 $self->{totals}{$name} = \%totals;
146 while( defined(my $line = $it->next) ) {
147 $self->_analyze_line($line, \%totals);
148 last if $self->{saw_bailout};
151 $totals{skip_all} = $self->{skip_all} if defined $self->{skip_all};
153 my $passed = !$totals{max} ||
154 ($totals{max} && $totals{seen} &&
155 $totals{max} == $totals{seen} &&
156 $totals{max} == $totals{ok});
157 $totals{passing} = $passed ? 1 : 0;
164 my($self, $line, $totals) = @_;
171 if( $self->_is_header($line) ) {
174 $self->{saw_header}++;
176 $totals->{max} += $self->{max};
178 elsif( $self->_is_test($line, \%result) ) {
182 $result{number} = $self->{'next'} unless $result{number};
184 # sometimes the 'not ' and the 'ok' are on different lines,
185 # happens often on VMS if you do:
186 # print "not " unless $test;
188 if( $self->{saw_lone_not} &&
189 ($self->{lone_not_line} == $self->{line} - 1) )
194 my $pass = $result{ok};
195 $result{type} = 'todo' if $self->{todo}{$result{number}};
197 if( $result{type} eq 'todo' ) {
200 $totals->{bonus}++ if $result{ok}
202 elsif( $result{type} eq 'skip' ) {
207 $totals->{ok}++ if $pass;
209 if( $result{number} > 100000 ) {
210 warn "Enormous test number seen [test $result{number}]\n";
211 warn "Can't detailize, too big.\n";
214 $totals->{details}[$result{number} - 1] =
215 {$self->_detailize($pass, \%result)};
218 # XXX handle counter mismatch
220 elsif ( $self->_is_bail_out($line, \$self->{bailout_reason}) ) {
222 $self->{saw_bailout} = 1;
228 $self->{callback}->($self, $line, $type, $totals) if $self->{callback};
230 $self->{'next'} = $result{number} + 1 if $type eq 'test';
235 my %results = $strap->analyze_fh($name, $test_filehandle);
237 Like C<analyze>, but it reads from the given filehandle.
242 my($self, $name, $fh) = @_;
244 my $it = Test::Harness::Iterator->new($fh);
245 $self->_analyze_iterator($name, $it);
248 =item B<analyze_file>
250 my %results = $strap->analyze_file($test_file);
252 Like C<analyze>, but it runs the given $test_file and parses it's
253 results. It will also use that name for the total report.
258 my($self, $file) = @_;
261 $self->{error} = "$file does not exist";
266 $self->{error} = "$file is not readable";
270 local $ENV{PERL5LIB} = $self->_INC2PERL5LIB;
272 # Is this necessary anymore?
273 my $cmd = $self->{_is_vms} ? "MCR $^X" : $^X;
275 my $switches = $self->_switches($file);
277 # *sigh* this breaks under taint, but open -| is unportable.
278 unless( open(FILE, "$cmd $switches $file|") ) {
279 print "can't run $file. $!\n";
283 my %results = $self->analyze_fh($file, \*FILE);
284 my $exit = close FILE;
285 $results{'wait'} = $?;
286 if( $? && $self->{_is_vms} ) {
287 eval q{use vmsish "status"; $results{'exit'} = $?};
290 $results{'exit'} = _wait2exit($?);
292 $results{passing} = 0 unless $? == 0;
294 $self->_restore_PERL5LIB();
300 eval { require POSIX; &POSIX::WEXITSTATUS(0) };
302 *_wait2exit = sub { $_[0] >> 8 };
305 *_wait2exit = sub { POSIX::WEXITSTATUS($_[0]) }
313 my $switches = $self->_switches($file);
315 Formats and returns the switches necessary to run the test.
320 my($self, $file) = @_;
323 open(TEST, $file) or print "can't open $file. $!\n";
326 $s .= " $ENV{'HARNESS_PERL_SWITCHES'}"
327 if exists $ENV{'HARNESS_PERL_SWITCHES'};
329 # When taint mode is on, PERL5LIB is ignored. So we need to put
330 # all that on the command line as -Is.
331 $s .= join " ", qq[ "-$1"], map {qq["-I$_"]} $self->_filtered_INC
332 if $first =~ /^#!.*\bperl.*\s-\w*([Tt]+)/;
334 close(TEST) or print "can't close $file. $!\n";
340 =item B<_INC2PERL5LIB>
342 local $ENV{PERL5LIB} = $self->_INC2PERL5LIB;
344 Takes the current value of @INC and turns it into something suitable
345 for putting onto PERL5LIB.
352 $self->{_old5lib} = $ENV{PERL5LIB};
354 return join $Config{path_sep}, $self->_filtered_INC;
357 =item B<_filtered_INC>
359 my @filtered_inc = $self->_filtered_INC;
361 Shortens @INC by removing redundant and unnecessary entries.
362 Necessary for OS's with limited command line lengths, like VMS.
367 my($self, @inc) = @_;
368 @inc = @INC unless @inc;
370 # VMS has a 255-byte limit on the length of %ENV entries, so
371 # toss the ones that involve perl_root, the install location
373 if( $self->{_is_vms} ) {
374 @inc = grep !/perl_root/i, @inc;
381 =item B<_restore_PERL5LIB>
383 $self->_restore_PERL5LIB;
385 This restores the original value of the PERL5LIB environment variable.
386 Necessary on VMS, otherwise a no-op.
390 sub _restore_PERL5LIB {
393 return unless $self->{_is_vms};
395 if (defined $self->{_old5lib}) {
396 $ENV{PERL5LIB} = $self->{_old5lib};
410 Methods for identifying what sort of line you're looking at.
416 my $is_comment = $strap->_is_comment($line, \$comment);
418 Checks if the given line is a comment. If so, it will place it into
424 my($self, $line, $comment) = @_;
426 if( $line =~ /^\s*\#(.*)/ ) {
437 my $is_header = $strap->_is_header($line);
439 Checks if the given line is a header (1..M) line. If so, it places
440 how many tests there will be in $strap->{max}, a list of which tests
441 are todo in $strap->{todo} and if the whole test was skipped
442 $strap->{skip_all} contains the reason.
446 # Regex for parsing a header. Will be run with /x
447 my $Extra_Header_Re = <<'REGEX';
449 (?: \s+ todo \s+ ([\d \t]+) )? # optional todo set
450 (?: \s* \# \s* ([\w:]+\s?) (.*) )? # optional skip with optional reason
454 my($self, $line) = @_;
456 if( my($max, $extra) = $line =~ /^1\.\.(\d+)(.*)/ ) {
458 assert( $self->{max} >= 0, 'Max # of tests looks right' );
460 if( defined $extra ) {
461 my($todo, $skip, $reason) = $extra =~ /$Extra_Header_Re/xo;
463 $self->{todo} = { map { $_ => 1 } split /\s+/, $todo } if $todo;
465 $self->{skip_all} = $reason if defined $skip and $skip =~ /^Skip/i;
477 my $is_test = $strap->_is_test($line, \%test);
479 Checks if the $line is a test report (ie. 'ok/not ok'). Reports the
480 result back in %test which will contain:
482 ok did it succeed? This is the literal 'ok' or 'not ok'.
483 name name of the test (if any)
484 number test number (if any)
486 type 'todo' or 'skip' (if any)
487 reason why is it todo or skip? (if any)
489 If will also catch lone 'not' lines, note it saw them
490 $strap->{saw_lone_not} and the line in $strap->{lone_not_line}.
494 my $Report_Re = <<'REGEX';
498 (?:\s+(\d+))? # optional test number
503 my $Extra_Re = <<'REGEX';
505 (.*?) (?:(?:[^\\]|^)# (.*))?
510 my($self, $line, $test) = @_;
512 # We pulverize the line down into pieces in three parts.
513 if( my($not, $num, $extra) = $line =~ /$Report_Re/ox ) {
514 my($name, $control) = split /(?:[^\\]|^)#/, $extra if $extra;
515 my($type, $reason) = $control =~ /^\s*(\S+)(?:\s+(.*))?$/ if $control;
517 $test->{number} = $num;
518 $test->{ok} = $not ? 0 : 1;
519 $test->{name} = $name;
521 if( defined $type ) {
522 $test->{type} = $type =~ /^TODO$/i ? 'todo' :
523 $type =~ /^Skip/i ? 'skip' : 0;
528 $test->{reason} = $reason;
533 # Sometimes the "not " and "ok" will be on seperate lines on VMS.
534 # We catch this and remember we saw it.
535 if( $line =~ /^not\s+$/ ) {
536 $self->{saw_lone_not} = 1;
537 $self->{lone_not_line} = $self->{line};
544 =item B<_is_bail_out>
546 my $is_bail_out = $strap->_is_bail_out($line, \$reason);
548 Checks if the line is a "Bail out!". Places the reason for bailing
554 my($self, $line, $reason) = @_;
556 if( $line =~ /^Bail out!\s*(.*)/i ) {
565 =item B<_reset_file_state>
567 $strap->_reset_file_state;
569 Resets things like $strap->{max}, $strap->{skip_all}, etc... so its
570 ready to parse the next file.
574 sub _reset_file_state {
577 delete @{$self}{qw(max skip_all todo)};
579 $self->{saw_header} = 0;
580 $self->{saw_bailout}= 0;
581 $self->{saw_lone_not} = 0;
582 $self->{lone_not_line} = 0;
583 $self->{bailout_reason} = '';
594 The %results returned from analyze() contain the following information:
596 passing true if the whole test is considered a pass
597 (or skipped), false if its a failure
599 exit the exit code of the test run, if from a file
600 wait the wait code of the test run, if from a file
602 max total tests which should have been run
603 seen total tests actually seen
604 skip_all if the whole test was skipped, this will
607 ok number of tests which passed
608 (including todo and skips)
610 todo number of todo tests seen
611 bonus number of todo tests which
614 skip number of tests skipped
616 So a successful test should have max == seen == ok.
619 There is one final item, the details.
621 details an array ref reporting the result of
622 each test looks like this:
624 $results{details}[$test_num - 1] =
625 { ok => is the test considered ok?
626 actual_ok => did it literally say 'ok'?
627 name => name of the test (if any)
628 type => 'skip' or 'todo' (if any)
629 reason => reason for the above (if any)
632 Element 0 of the details is test #1. I tried it with element 1 being
633 #1 and 0 being empty, this is less awkward.
641 my %details = $strap->_detailize($pass, \%test);
643 Generates the details based on the last test line seen. $pass is true
644 if it was considered to be a passed test. %test is the results of the
645 test you're summarizing.
650 my($self, $pass, $test) = @_;
652 my %details = ( ok => $pass,
653 actual_ok => $test->{ok}
656 assert( !(grep !defined $details{$_}, keys %details),
657 'test contains the ok and actual_ok info' );
659 # We don't want these to be undef because they are often
660 # checked and don't want the checker to have to deal with
661 # uninitialized vars.
662 foreach my $piece (qw(name type reason)) {
663 $details{$piece} = defined $test->{$piece} ? $test->{$piece} : '';
675 See F<examples/mini_harness.plx> for an example of use.
679 Michael G Schwern E<lt>schwern@pobox.comE<gt>