1 # -*- Mode: cperl; cperl-indent-level: 4 -*-
2 # $Id: Straps.pm,v 1.6 2002/05/17 23:04:11 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 = $totals{skip_all} ||
154 ($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 "Enourmous 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) = @_;
260 local $ENV{PERL5LIB} = $self->_INC2PERL5LIB;
262 # Is this necessary anymore?
263 my $cmd = $self->{_is_vms} ? "MCR $^X" : $^X;
265 my $switches = $self->_switches($file);
267 # *sigh* this breaks under taint, but open -| is unportable.
268 unless( open(FILE, "$cmd $switches $file|") ) {
269 print "can't run $file. $!\n";
273 my %results = $self->analyze_fh($file, \*FILE);
274 my $exit = close FILE;
275 $results{'wait'} = $?;
276 if( $? && $self->{_is_vms} ) {
277 eval q{use vmsish "status"; $results{'exit'} = $?};
280 $results{'exit'} = _wait2exit($?);
282 $results{passing} = 0 unless $? == 0;
284 $self->_restore_PERL5LIB();
290 eval { require POSIX; &POSIX::WEXITSTATUS(0) };
292 *_wait2exit = sub { $_[0] >> 8 };
295 *_wait2exit = sub { POSIX::WEXITSTATUS($_[0]) }
303 my $switches = $self->_switches($file);
305 Formats and returns the switches necessary to run the test.
310 my($self, $file) = @_;
313 open(TEST, $file) or print "can't open $file. $!\n";
316 $s .= " $ENV{'HARNESS_PERL_SWITCHES'}"
317 if exists $ENV{'HARNESS_PERL_SWITCHES'};
318 $s .= qq[ "-$1" ] if $first =~ /^#!.*\bperl.*\s-\w*([Tt]+)/;
319 $s .= join " ", map {qq["-I$_"]} $self->_filtered_INC;
321 close(TEST) or print "can't close $file. $!\n";
327 =item B<_INC2PERL5LIB>
329 local $ENV{PERL5LIB} = $self->_INC2PERL5LIB;
331 Takes the current value of @INC and turns it into something suitable
332 for putting onto PERL5LIB.
339 $self->{_old5lib} = $ENV{PERL5LIB};
341 return join $Config{path_sep}, $self->_filtered_INC;
344 =item B<_filtered_INC>
346 my @filtered_inc = $self->_filtered_INC;
348 Shortens @INC by removing redundant and unnecessary entries.
349 Necessary for OS's with limited command line lengths, like VMS.
354 my($self, @inc) = @_;
355 @inc = @INC unless @inc;
357 # VMS has a 255-byte limit on the length of %ENV entries, so
358 # toss the ones that involve perl_root, the install location
360 if( $self->{_is_vms} ) {
361 @inc = grep !/perl_root/i, @inc;
368 =item B<_restore_PERL5LIB>
370 $self->_restore_PERL5LIB;
372 This restores the original value of the PERL5LIB environment variable.
373 Necessary on VMS, otherwise a no-op.
377 sub _restore_PERL5LIB {
380 return unless $self->{_is_vms};
382 if (defined $self->{_old5lib}) {
383 $ENV{PERL5LIB} = $self->{_old5lib};
397 Methods for identifying what sort of line you're looking at.
403 my $is_comment = $strap->_is_comment($line, \$comment);
405 Checks if the given line is a comment. If so, it will place it into
411 my($self, $line, $comment) = @_;
413 if( $line =~ /^\s*\#(.*)/ ) {
424 my $is_header = $strap->_is_header($line);
426 Checks if the given line is a header (1..M) line. If so, it places
427 how many tests there will be in $strap->{max}, a list of which tests
428 are todo in $strap->{todo} and if the whole test was skipped
429 $strap->{skip_all} contains the reason.
433 # Regex for parsing a header. Will be run with /x
434 my $Extra_Header_Re = <<'REGEX';
436 (?: \s+ todo \s+ ([\d \t]+) )? # optional todo set
437 (?: \s* \# \s* ([\w:]+\s?) (.*) )? # optional skip with optional reason
441 my($self, $line) = @_;
443 if( my($max, $extra) = $line =~ /^1\.\.(\d+)(.*)/ ) {
445 assert( $self->{max} >= 0, 'Max # of tests looks right' );
446 if( defined $extra ) {
447 my($todo, $skip, $reason) = $extra =~ /$Extra_Header_Re/xo;
449 $self->{todo} = { map { $_ => 1 } split /\s+/, $todo } if $todo;
451 $self->{skip_all} = $reason if defined $skip and $skip =~ /^Skip/i;
463 my $is_test = $strap->_is_test($line, \%test);
465 Checks if the $line is a test report (ie. 'ok/not ok'). Reports the
466 result back in %test which will contain:
468 ok did it succeed? This is the literal 'ok' or 'not ok'.
469 name name of the test (if any)
470 number test number (if any)
472 type 'todo' or 'skip' (if any)
473 reason why is it todo or skip? (if any)
475 If will also catch lone 'not' lines, note it saw them
476 $strap->{saw_lone_not} and the line in $strap->{lone_not_line}.
480 my $Report_Re = <<'REGEX';
484 (?:\s+(\d+))? # optional test number
489 my $Extra_Re = <<'REGEX';
491 (.*?) (?:(?:[^\\]|^)# (.*))?
496 my($self, $line, $test) = @_;
498 # We pulverize the line down into pieces in three parts.
499 if( my($not, $num, $extra) = $line =~ /$Report_Re/ox ) {
500 my($name, $control) = split /(?:[^\\]|^)#/, $extra if $extra;
501 my($type, $reason) = $control =~ /^\s*(\S+)(?:\s+(.*))?$/ if $control;
503 $test->{number} = $num;
504 $test->{ok} = $not ? 0 : 1;
505 $test->{name} = $name;
507 if( defined $type ) {
508 $test->{type} = $type =~ /^TODO$/i ? 'todo' :
509 $type =~ /^Skip/i ? 'skip' : 0;
514 $test->{reason} = $reason;
519 # Sometimes the "not " and "ok" will be on seperate lines on VMS.
520 # We catch this and remember we saw it.
521 if( $line =~ /^not\s+$/ ) {
522 $self->{saw_lone_not} = 1;
523 $self->{lone_not_line} = $self->{line};
530 =item B<_is_bail_out>
532 my $is_bail_out = $strap->_is_bail_out($line, \$reason);
534 Checks if the line is a "Bail out!". Places the reason for bailing
540 my($self, $line, $reason) = @_;
542 if( $line =~ /^Bail out!\s*(.*)/i ) {
551 =item B<_reset_file_state>
553 $strap->_reset_file_state;
555 Resets things like $strap->{max}, $strap->{skip_all}, etc... so its
556 ready to parse the next file.
560 sub _reset_file_state {
563 delete @{$self}{qw(max skip_all todo)};
565 $self->{saw_header} = 0;
566 $self->{saw_bailout}= 0;
567 $self->{saw_lone_not} = 0;
568 $self->{lone_not_line} = 0;
569 $self->{bailout_reason} = '';
580 The %results returned from analyze() contain the following information:
582 passing true if the whole test is considered a pass
583 (or skipped), false if its a failure
585 exit the exit code of the test run, if from a file
586 wait the wait code of the test run, if from a file
588 max total tests which should have been run
589 seen total tests actually seen
590 skip_all if the whole test was skipped, this will
593 ok number of tests which passed
594 (including todo and skips)
596 todo number of todo tests seen
597 bonus number of todo tests which
600 skip number of tests skipped
602 So a successful test should have max == seen == ok.
605 There is one final item, the details.
607 details an array ref reporting the result of
608 each test looks like this:
610 $results{details}[$test_num - 1] =
611 { ok => is the test considered ok?
612 actual_ok => did it literally say 'ok'?
613 name => name of the test (if any)
614 type => 'skip' or 'todo' (if any)
615 reason => reason for the above (if any)
618 Element 0 of the details is test #1. I tried it with element 1 being
619 #1 and 0 being empty, this is less awkward.
627 my %details = $strap->_detailize($pass, \%test);
629 Generates the details based on the last test line seen. $pass is true
630 if it was considered to be a passed test. %test is the results of the
631 test you're summarizing.
636 my($self, $pass, $test) = @_;
638 my %details = ( ok => $pass,
639 actual_ok => $test->{ok}
642 assert( !(grep !defined $details{$_}, keys %details),
643 'test contains the ok and actual_ok info' );
645 # We don't want these to be undef because they are often
646 # checked and don't want the checker to have to deal with
647 # uninitialized vars.
648 foreach my $piece (qw(name type reason)) {
649 $details{$piece} = defined $test->{$piece} ? $test->{$piece} : '';
661 See F<examples/mini_harness.plx> for an example of use.
665 Michael G Schwern E<lt>schwern@pobox.comE<gt>