3 # 2 purpose file: 1-test 2-demonstrate (via args, -v -a options)
7 To verify that B::Concise properly reports whether functions are XS,
8 perl, or optimized constant subs, we test against a few core packages
9 which have a stable API, and which have functions of all 3 types.
13 5 core packages are tested; Digest::MD5, B, B::Deparse, Data::Dumper,
14 and POSIX. These have a mix of the 3 expected implementation types;
15 perl, XS, and constant (optimized constant subs).
17 %$testpkgs specifies what packages are tested; each package is loaded,
18 and the stash is scanned for the function-names in that package.
20 Each value in %$testpkgs is a hash-of-lists (HoL) whose keys are
21 implementation-types and values are lists of function-names of that type.
23 To keep these HoLs smaller and more managable, they may carry an
24 additional 'dflt' => $impl_Type, which means that unnamed functions
25 are expected to be of that default implementation type. Those unnamed
26 functions are known from the scan of the package stash.
28 =head1 HOW THEY'RE TESTED
30 Each function is 'rendered' by B::Concise, and result is matched
31 against regexs for each possible implementation-type. For some
32 packages, some functions may be unimplemented on some platforms.
34 To slay this maintenance dragon, the regexs used in like() match
35 against renderings which indicate that there is no implementation.
37 If a function is implemented differently on different platforms, the
38 test for that function will fail on one of those platforms. These
39 specific functions can be skipped by a 'skip' => [ @list ] to the HoL
40 mentioned previously. See usage for skip in B's HoL, which avoids
41 testing a function which doesnt exist on non-threaded builds.
43 =head1 OPTIONS AND ARGUMENTS
45 C<-v> and C<-V> trigger 2 levels of verbosity.
47 C<-a> uses Module::CoreList to run all core packages through the test, which
48 gives some interesting results.
50 C<-c> causes the expected XS/non-XS results to be marked with
51 corrections, which are then reported at program END, in a form that's
52 readily cut-and-pastable into this file.
55 C<< -r <file> >> reads a file, as written by C<-c>, and adjusts the expected
56 results accordingly. The file is 'required', so @INC settings apply.
58 If module-names are given as args, those packages are run through the
59 test harness; this is handy for collecting further items to test, and
60 may be useful otherwise (ie just to see).
66 =item ./perl -Ilib -wS ext/B/t/concise-xs.t -c Storable
68 Tests Storable.pm for XS/non-XS routines, writes findings (along with
69 test results) to stdout. You could edit results to produce a test
70 file, as in next example
72 =item ./perl -Ilib -wS ext/B/t/concise-xs.t -r ./storable
74 Loads file, and uses it to set expectations, and run tests
76 =item ./perl -Ilib -wS ext/B/t/concise-xs.t -avc > ../foo-avc 2> ../foo-avc2
78 Gets module list from Module::Corelist, and runs them all through the
79 test. Since -c is used, this generates corrections, which are saved
80 in a file, which is edited down to produce ../all-xs
82 =item ./perl -Ilib -wS ext/B/t/concise-xs.t -cr ../all-xs > ../foo 2> ../foo2
84 This runs the tests specified in the file created in previous example.
85 -c is used again, and stdout verifies that all the expected results
86 given by -r ../all-xs are now seen.
88 Looking at ../foo2, you'll see 34 occurrences of the following error:
90 # err: Can't use an undefined value as a SCALAR reference at
91 # lib/B/Concise.pm line 634, <DATA> line 1.
98 if ($ENV{PERL_CORE}) {
100 @INC = ('.', '../lib');
103 push @INC, "../../t";
106 if (($Config::Config{'extensions'} !~ /\bB\b/) ){
107 print "1..0 # Skip -- Perl configured without B module\n";
110 unless ($Config::Config{useperlio}) {
111 print "1..0 # Skip -- Perl configured without perlio\n";
118 use Test::More tests => ( 0 * !!$Config::Config{useithreads}
120 + 14 * ($] >= 5.009003)
123 require_ok("B::Concise");
126 ( constant => qr{ (?-x: is a constant sub, optimized to a \w+)
127 |(?-x: exists in stash, but has no START) }x,
128 XS => qr{ (?-x: is XS code)
129 |(?-x: exists in stash, but has no START) }x,
130 perl => qr{ (?-x: (next|db)state)
131 |(?-x: exists in stash, but has no START) }x,
132 noSTART => qr/exists in stash, but has no START/,
136 # packages to test, with expected types for named funcs
138 Digest::MD5 => { perl => [qw/ import /],
141 Data::Dumper => { XS => [qw/ bootstrap Dumpxs /],
144 dflt => 'constant', # all but 47/274
145 skip => [ 'regex_padav' ], # threaded only
147 walksymtable walkoptree_slow walkoptree_exec
148 timing_info savesym peekop parents objsym debug
149 compile_stats clearsym class
152 warnhook walkoptree_debug walkoptree threadsv_names
153 svref_2object sv_yes sv_undef sv_no save_BEGINs
154 regex_padav ppname perlstring opnumber minus_c
155 main_start main_root main_cv init_av inc_gv hash
156 formfeed end_av dowarn diehook defstash curstash
157 cstring comppadlist check_av cchar cast_I32 bootstrap
158 begin_av amagic_generation address
162 B::Deparse => { dflt => 'perl', # 235 functions
164 XS => [qw( svref_2object perlstring opnumber main_start
165 main_root main_cv )],
167 constant => [qw/ ASSIGN CVf_ASSERTION CVf_LOCKED CVf_LVALUE
168 CVf_METHOD LIST_CONTEXT OP_CONST OP_LIST OP_RV2SV
169 OP_STRINGIFY OPf_KIDS OPf_MOD OPf_REF OPf_SPECIAL
170 OPf_STACKED OPf_WANT OPf_WANT_LIST OPf_WANT_SCALAR
171 OPf_WANT_VOID OPpCONST_ARYBASE OPpCONST_BARE
172 OPpENTERSUB_AMPER OPpEXISTS_SUB OPpITER_REVERSED
173 OPpLVAL_INTRO OPpOUR_INTRO OPpSLICE OPpSORT_DESCEND
174 OPpSORT_INPLACE OPpSORT_INTEGER OPpSORT_NUMERIC
175 OPpSORT_REVERSE OPpTARGET_MY OPpTRANS_COMPLEMENT
176 OPpTRANS_DELETE OPpTRANS_SQUASH PMf_CONTINUE
177 PMf_EVAL PMf_EXTENDED PMf_FOLD PMf_GLOBAL PMf_KEEP
178 PMf_MULTILINE PMf_ONCE PMf_SINGLELINE PMf_SKIPWHITE
179 POSTFIX SVf_FAKE SVf_IOK SVf_NOK SVf_POK SVf_ROK
180 SVpad_OUR SVs_RMG SVs_SMG SWAP_CHILDREN
184 POSIX => { dflt => 'constant', # all but 252/589
185 perl => [qw/ import croak AUTOLOAD /],
187 XS => [qw/ write wctomb wcstombs uname tzset tzname
188 ttyname tmpnam times tcsetpgrp tcsendbreak
189 tcgetpgrp tcflush tcflow tcdrain tanh tan
190 sysconf strxfrm strtoul strtol strtod
191 strftime strcoll sinh sigsuspend sigprocmask
192 sigpending sigaction setuid setsid setpgid
193 setlocale setgid read pipe pause pathconf
194 open nice modf mktime mkfifo mbtowc mbstowcs
195 mblen lseek log10 localeconv ldexp lchown
196 isxdigit isupper isspace ispunct isprint
197 islower isgraph isdigit iscntrl isalpha
198 isalnum int_macro_int getcwd frexp fpathconf
199 fmod floor dup2 dup difftime cuserid ctime
200 ctermid cosh constant close clock ceil
201 bootstrap atan asin asctime acos access abort
202 _exit _POSIX_SAVED_IDS _POSIX_JOB_CONTROL
209 B::Concise::compile('-nobanner'); # set a silent default
210 getopts('vaVcr:', \my %opts) or
213 usage: PERL_CORE=1 ./perl ext/B/t/concise-xs.t [-av] [module-list]
214 tests ability to discern XS funcs using Digest::MD5 package
217 -a : runs all modules in CoreList
218 -c : writes test corrections as a Data::Dumper expression
219 -r <file> : reads file of tests, as written by -c
220 <args> : additional modules are loaded and tested
221 (will report failures, since no XS funcs are known apriori)
227 require Data::Dumper;
228 Data::Dumper->import('Dumper');
229 $Data::Dumper::Sortkeys = 1;
235 my $refpkgs = require "$opts{r}";
236 $testpkgs->{$_} = $refpkgs->{$_} foreach keys %$refpkgs;
241 foreach $pkg (sort keys %$testpkgs) {
242 test_pkg($pkg, $testpkgs->{$pkg});
245 foreach $pkg (@argpkgs) {
246 test_pkg($pkg, $testpkgs->{$pkg});
255 my ($pkg, $fntypes) = @_;
258 # build %stash: keys are func-names, vals filled in below
261 => ( grep exists &{"$pkg\::$_"} # grab CODE symbols
262 => grep !/__ANON__/ # but not anon subs
263 => keys %{$pkg.'::'} # from symbol table
266 for my $type (keys %matchers) {
267 foreach my $fn (@{$fntypes->{$type}}) {
268 carp "$fn can only be one of $type, $stash{$fn}\n"
273 # set default type for un-named functions
274 my $dflt = $fntypes->{dflt} || 'perl';
275 for my $k (keys %stash) {
276 $stash{$k} = $dflt unless $stash{$k};
278 $stash{$_} = 'skip' foreach @{$fntypes->{skip}};
281 diag("fntypes: " => Dumper($fntypes));
282 diag("$pkg stash: " => Dumper(\%stash));
284 foreach my $fn (reverse sort keys %stash) {
285 next if $stash{$fn} eq 'skip';
286 my $res = checkXS("${pkg}::$fn", $stash{$fn});
288 push @{$report{$pkg}{$res}}, $fn;
294 my ($func_name, $want) = @_;
296 croak "unknown type $want: $func_name\n"
297 unless defined $matchers{$want};
299 my ($buf, $err) = render($func_name);
300 my $res = like($buf, $matchers{$want}, "$want sub:\t $func_name");
303 # test failed. return type that would give success
304 for my $m (keys %matchers) {
305 return $m if $buf =~ $matchers{$m};
312 my ($func_name) = @_;
314 B::Concise::reset_sequence();
315 B::Concise::walk_output(\my $buf);
317 my $walker = B::Concise::compile($func_name);
318 eval { $walker->() };
319 diag("err: $@ $buf") if $@;
320 diag("verbose: $buf") if $opts{V};
326 eval { require Module::CoreList };
328 warn "Module::CoreList not available on $]\n";
331 my $mods = $Module::CoreList::version{'5.009002'};
332 $mods = [ sort keys %$mods ];
335 foreach my $pkgnm (@$mods) {
342 $Data::Dumper::Indent = 1;
343 print "Corrections: ", Dumper(\%report);
345 foreach my $pkg (sort keys %report) {
346 for my $type (keys %matchers) {
347 print "$pkg: $type: @{$report{$pkg}{$type}}\n"
348 if @{$report{$pkg}{$type}};