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 => ( # per-pkg tests (function ct + require_ok)
119 40 + 16 # Data::Dumper, Digest::MD5
120 + 517 + 238 # B::Deparse, B
121 + 595 + 190 # POSIX, IO::Socket
123 + 16 * ($] >= 5.009003)
126 require_ok("B::Concise");
129 ( constant => qr{ (?-x: is a constant sub, optimized to a \w+)
130 |(?-x: exists in stash, but has no START) }x,
131 XS => qr/ is XS code/,
132 perl => qr/ (next|db)state/,
133 noSTART => qr/ exists in stash, but has no START/,
137 # packages to test, with expected types for named funcs
139 Digest::MD5 => { perl => [qw/ import /],
142 Data::Dumper => { XS => [qw/ bootstrap Dumpxs /],
145 dflt => 'constant', # all but 47/274
146 skip => [ 'regex_padav' ], # threaded only
148 walksymtable walkoptree_slow walkoptree_exec
149 timing_info savesym peekop parents objsym debug
150 compile_stats clearsym class
153 warnhook walkoptree_debug walkoptree threadsv_names
154 svref_2object sv_yes sv_undef sv_no save_BEGINs
155 regex_padav ppname perlstring opnumber minus_c
156 main_start main_root main_cv init_av inc_gv hash
157 formfeed end_av dowarn diehook defstash curstash
158 cstring comppadlist check_av cchar cast_I32 bootstrap
159 begin_av amagic_generation sub_generation address
164 B::Deparse => { dflt => 'perl', # 235 functions
166 XS => [qw( svref_2object perlstring opnumber main_start
167 main_root main_cv )],
169 constant => [qw/ ASSIGN CVf_ASSERTION CVf_LOCKED CVf_LVALUE
170 CVf_METHOD LIST_CONTEXT OP_CONST OP_LIST OP_RV2SV
171 OP_STRINGIFY OPf_KIDS OPf_MOD OPf_REF OPf_SPECIAL
172 OPf_STACKED OPf_WANT OPf_WANT_LIST OPf_WANT_SCALAR
173 OPf_WANT_VOID OPpCONST_ARYBASE OPpCONST_BARE
174 OPpENTERSUB_AMPER OPpEXISTS_SUB OPpITER_REVERSED
175 OPpLVAL_INTRO OPpOUR_INTRO OPpSLICE OPpSORT_DESCEND
176 OPpSORT_INPLACE OPpSORT_INTEGER OPpSORT_NUMERIC
177 OPpSORT_REVERSE OPpTARGET_MY OPpTRANS_COMPLEMENT
178 OPpTRANS_DELETE OPpTRANS_SQUASH PMf_CONTINUE
179 PMf_EVAL PMf_EXTENDED PMf_FOLD PMf_GLOBAL PMf_KEEP
180 PMf_MULTILINE PMf_ONCE PMf_SINGLELINE PMf_SKIPWHITE
181 POSTFIX SVf_FAKE SVf_IOK SVf_NOK SVf_POK SVf_ROK
182 SVpad_OUR SVs_RMG SVs_SMG SWAP_CHILDREN OPpPAD_STATE
186 POSIX => { dflt => 'constant', # all but 252/589
187 skip => [qw/ _POSIX_JOB_CONTROL /], # platform varying
188 perl => [qw/ import croak AUTOLOAD /],
190 XS => [qw/ write wctomb wcstombs uname tzset tzname
191 ttyname tmpnam times tcsetpgrp tcsendbreak
192 tcgetpgrp tcflush tcflow tcdrain tanh tan
193 sysconf strxfrm strtoul strtol strtod
194 strftime strcoll sinh sigsuspend sigprocmask
195 sigpending sigaction setuid setsid setpgid
196 setlocale setgid read pipe pause pathconf
197 open nice modf mktime mkfifo mbtowc mbstowcs
198 mblen lseek log10 localeconv ldexp lchown
199 isxdigit isupper isspace ispunct isprint
200 islower isgraph isdigit iscntrl isalpha
201 isalnum int_macro_int getcwd frexp fpathconf
202 fmod floor dup2 dup difftime cuserid ctime
203 ctermid cosh constant close clock ceil
204 bootstrap atan asin asctime acos access abort
209 IO::Socket => { dflt => 'constant', # 157/190
211 perl => [qw/ timeout socktype sockopt sockname
212 socketpair socket sockdomain sockaddr_un
213 sockaddr_in shutdown setsockopt send
214 register_domain recv protocol peername
215 new listen import getsockopt croak
216 connected connect configure confess close
217 carp bind atmark accept blocking
220 XS => [qw/ unpack_sockaddr_un unpack_sockaddr_in
221 sockatmark sockaddr_family pack_sockaddr_un
222 pack_sockaddr_in inet_ntoa inet_aton
229 B::Concise::compile('-nobanner'); # set a silent default
230 getopts('vaVcr:', \my %opts) or
233 usage: PERL_CORE=1 ./perl ext/B/t/concise-xs.t [-av] [module-list]
234 tests ability to discern XS funcs using Digest::MD5 package
237 -a : runs all modules in CoreList
238 -c : writes test corrections as a Data::Dumper expression
239 -r <file> : reads file of tests, as written by -c
240 <args> : additional modules are loaded and tested
241 (will report failures, since no XS funcs are known apriori)
247 require Data::Dumper;
248 Data::Dumper->import('Dumper');
249 $Data::Dumper::Sortkeys = 1;
255 my $refpkgs = require "$opts{r}";
256 $testpkgs->{$_} = $refpkgs->{$_} foreach keys %$refpkgs;
261 foreach $pkg (sort keys %$testpkgs) {
262 test_pkg($pkg, $testpkgs->{$pkg});
265 foreach $pkg (@argpkgs) {
266 test_pkg($pkg, $testpkgs->{$pkg});
275 my ($pkg, $fntypes) = @_;
278 # build %stash: keys are func-names, vals filled in below
281 => ( grep exists &{"$pkg\::$_"} # grab CODE symbols
282 => grep !/__ANON__/ # but not anon subs
283 => keys %{$pkg.'::'} # from symbol table
286 for my $type (keys %matchers) {
287 foreach my $fn (@{$fntypes->{$type}}) {
288 carp "$fn can only be one of $type, $stash{$fn}\n"
293 # set default type for un-named functions
294 my $dflt = $fntypes->{dflt} || 'perl';
295 for my $k (keys %stash) {
296 $stash{$k} = $dflt unless $stash{$k};
298 $stash{$_} = 'skip' foreach @{$fntypes->{skip}};
301 diag("fntypes: " => Dumper($fntypes));
302 diag("$pkg stash: " => Dumper(\%stash));
304 foreach my $fn (reverse sort keys %stash) {
305 next if $stash{$fn} eq 'skip';
306 my $res = checkXS("${pkg}::$fn", $stash{$fn});
308 push @{$report{$pkg}{$res}}, $fn;
314 my ($func_name, $want) = @_;
316 croak "unknown type $want: $func_name\n"
317 unless defined $matchers{$want};
319 my ($buf, $err) = render($func_name);
320 my $res = like($buf, $matchers{$want}, "$want sub:\t $func_name");
323 # test failed. return type that would give success
324 for my $m (keys %matchers) {
325 return $m if $buf =~ $matchers{$m};
332 my ($func_name) = @_;
334 B::Concise::reset_sequence();
335 B::Concise::walk_output(\my $buf);
337 my $walker = B::Concise::compile($func_name);
338 eval { $walker->() };
339 diag("err: $@ $buf") if $@;
340 diag("verbose: $buf") if $opts{V};
346 eval { require Module::CoreList };
348 warn "Module::CoreList not available on $]\n";
351 my $mods = $Module::CoreList::version{'5.009002'};
352 $mods = [ sort keys %$mods ];
355 foreach my $pkgnm (@$mods) {
362 $Data::Dumper::Indent = 1;
363 print "Corrections: ", Dumper(\%report);
365 foreach my $pkg (sort keys %report) {
366 for my $type (keys %matchers) {
367 print "$pkg: $type: @{$report{$pkg}{$type}}\n"
368 if @{$report{$pkg}{$type}};