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 manageable, 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 doesn't 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.
100 if (($Config::Config{'extensions'} !~ /\bB\b/) ){
101 print "1..0 # Skip -- Perl configured without B module\n";
104 unless ($Config::Config{useperlio}) {
105 print "1..0 # Skip -- Perl configured without perlio\n";
112 use Test::More 'no_plan';
114 require_ok("B::Concise");
117 ( constant => qr{ (?-x: is a constant sub, optimized to a \w+)
118 |(?-x: exists in stash, but has no START) }x,
119 XS => qr/ is XS code/,
120 perl => qr/ (next|db)state/,
121 noSTART => qr/ exists in stash, but has no START/,
125 # packages to test, with expected types for named funcs
127 Digest::MD5 => { perl => [qw/ import /],
130 Data::Dumper => { XS => [qw/ bootstrap Dumpxs /,
131 $] >= 5.015 ? qw/_vstring / : () ],
133 ? (constant => ['_bad_vsmg']) : (),
136 dflt => 'constant', # all but 47/297
137 skip => [ 'regex_padav' ], # threaded only
139 walksymtable walkoptree_slow walkoptree_exec
140 timing_info savesym peekop parents objsym debug
141 compile_stats clearsym class
144 warnhook walkoptree_debug walkoptree threadsv_names
145 svref_2object sv_yes sv_undef sv_no save_BEGINs
146 regex_padav ppname perlstring opnumber minus_c
147 main_start main_root main_cv init_av inc_gv hash
148 formfeed end_av dowarn diehook defstash curstash
149 cstring comppadlist check_av cchar cast_I32 bootstrap
150 begin_av amagic_generation sub_generation address
154 B::Deparse => { dflt => 'perl', # 236 functions
156 XS => [qw( svref_2object perlstring opnumber main_start
157 main_root main_cv )],
159 constant => [qw/ ASSIGN CVf_LVALUE
160 CVf_METHOD LIST_CONTEXT OP_CONST OP_LIST OP_RV2SV
161 OP_STRINGIFY OPf_KIDS OPf_MOD OPf_REF OPf_SPECIAL
162 OPf_STACKED OPf_WANT OPf_WANT_LIST OPf_WANT_SCALAR
163 OPf_WANT_VOID OPpCONST_BARE OPpCONST_NOVER
164 OPpENTERSUB_AMPER OPpEXISTS_SUB OPpITER_REVERSED
165 OPpLVAL_INTRO OPpOUR_INTRO OPpSLICE OPpSORT_DESCEND
166 OPpSORT_INPLACE OPpSORT_INTEGER OPpSORT_NUMERIC
167 OPpSORT_REVERSE OPpREVERSE_INPLACE OPpTARGET_MY
168 OPpTRANS_COMPLEMENT OPpTRANS_DELETE OPpTRANS_SQUASH
169 PMf_CONTINUE PMf_EVAL PMf_EXTENDED PMf_FOLD PMf_GLOBAL
170 PMf_KEEP PMf_NONDESTRUCT
171 PMf_MULTILINE PMf_ONCE PMf_SINGLELINE
172 POSTFIX SVf_FAKE SVf_IOK SVf_NOK SVf_POK SVf_ROK
173 SVpad_OUR SVs_RMG SVs_SMG SWAP_CHILDREN OPpPAD_STATE
174 OPpCONST_ARYBASE RXf_SKIPWHITE/,
176 OP_GLOB PMf_SKIPWHITE RXf_PMf_CHARSET RXf_PMf_KEEPCOPY
177 OPpEVAL_BYTES OPpSUBSTR_REPL_FIRST) : (),
178 'CVf_LOCKED', # This ends up as a constant, pre or post 5.10
182 POSIX => { dflt => 'constant', # all but 252/589
183 skip => [qw/ _POSIX_JOB_CONTROL /, # platform varying
184 # Might be XS or imported from Fcntl, depending on your
186 qw / S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISREG /,
187 # Might be XS or AUTOLOADed, depending on your perl
189 qw /WEXITSTATUS WIFEXITED WIFSIGNALED WIFSTOPPED
191 'int_macro_int', # Removed in POSIX 1.16
193 perl => [qw/ import croak AUTOLOAD /,
195 ? qw/load_imports usage printf sprintf perror/
199 XS => [qw/ write wctomb wcstombs uname tzset tzname
200 ttyname tmpnam times tcsetpgrp tcsendbreak
201 tcgetpgrp tcflush tcflow tcdrain tanh tan
202 sysconf strxfrm strtoul strtol strtod
203 strftime strcoll sinh sigsuspend sigprocmask
204 sigpending sigaction setuid setsid setpgid
205 setlocale setgid read pipe pause pathconf
206 open nice modf mktime mkfifo mbtowc mbstowcs
207 mblen lseek log10 localeconv ldexp lchown
208 isxdigit isupper isspace ispunct isprint
209 islower isgraph isdigit iscntrl isalpha
210 isalnum getcwd frexp fpathconf
211 fmod floor dup2 dup difftime cuserid ctime
212 ctermid cosh constant close clock ceil
213 bootstrap atan asin asctime acos access abort
215 /, $] >= 5.015 ? ('sleep') : () ],
218 IO::Socket => { dflt => 'constant', # 157/190
220 perl => [qw/ timeout socktype sockopt sockname
221 socketpair socket sockdomain sockaddr_un
222 sockaddr_in shutdown setsockopt send
223 register_domain recv protocol peername
224 new listen import getsockopt croak
225 connected connect configure confess close
226 carp bind atmark accept sockaddr_in6
229 XS => [qw/ unpack_sockaddr_un unpack_sockaddr_in
230 sockatmark sockaddr_family pack_sockaddr_un
231 pack_sockaddr_in inet_ntoa inet_aton
232 unpack_sockaddr_in6 pack_sockaddr_in6
234 # skip inet_ntop and inet_pton as they're not exported by default
240 B::Concise::compile('-nobanner'); # set a silent default
241 getopts('vaVcr:', \my %opts) or
244 usage: PERL_CORE=1 ./perl ext/B/t/concise-xs.t [-av] [module-list]
245 tests ability to discern XS funcs using Digest::MD5 package
248 -a : runs all modules in CoreList
249 -c : writes test corrections as a Data::Dumper expression
250 -r <file> : reads file of tests, as written by -c
251 <args> : additional modules are loaded and tested
252 (will report failures, since no XS funcs are known apriori)
258 require Data::Dumper;
259 Data::Dumper->import('Dumper');
260 { my $x = \*Data::Dumper::Sortkeys } # shut up 'used once' warning
261 $Data::Dumper::Sortkeys = 1;
267 my $refpkgs = require "$opts{r}";
268 $testpkgs->{$_} = $refpkgs->{$_} foreach keys %$refpkgs;
273 foreach $pkg (sort keys %$testpkgs) {
274 test_pkg($pkg, $testpkgs->{$pkg});
277 foreach $pkg (@argpkgs) {
278 test_pkg($pkg, $testpkgs->{$pkg});
287 my ($pkg, $fntypes) = @_;
290 # build %stash: keys are func-names, vals filled in below
293 => ( grep exists &{"$pkg\::$_"} # grab CODE symbols
294 => grep !/__ANON__/ # but not anon subs
295 => keys %{$pkg.'::'} # from symbol table
298 for my $type (keys %matchers) {
299 foreach my $fn (@{$fntypes->{$type}}) {
300 carp "$fn can only be one of $type, $stash{$fn}\n"
305 # set default type for un-named functions
306 my $dflt = $fntypes->{dflt} || 'perl';
307 for my $k (keys %stash) {
308 $stash{$k} = $dflt unless $stash{$k};
310 $stash{$_} = 'skip' foreach @{$fntypes->{skip}};
313 diag("fntypes: " => Dumper($fntypes));
314 diag("$pkg stash: " => Dumper(\%stash));
316 foreach my $fn (reverse sort keys %stash) {
317 next if $stash{$fn} eq 'skip';
318 my $res = checkXS("${pkg}::$fn", $stash{$fn});
320 push @{$report{$pkg}{$res}}, $fn;
326 my ($func_name, $want) = @_;
328 croak "unknown type $want: $func_name\n"
329 unless defined $matchers{$want};
331 my ($buf, $err) = render($func_name);
332 my $res = like($buf, $matchers{$want}, "$want sub:\t $func_name");
335 # test failed. return type that would give success
336 for my $m (keys %matchers) {
337 return $m if $buf =~ $matchers{$m};
344 my ($func_name) = @_;
346 B::Concise::reset_sequence();
347 B::Concise::walk_output(\my $buf);
349 my $walker = B::Concise::compile($func_name);
350 eval { $walker->() };
351 diag("err: $@ $buf") if $@;
352 diag("verbose: $buf") if $opts{V};
358 eval { require Module::CoreList };
360 warn "Module::CoreList not available on $]\n";
363 { my $x = \*Module::CoreList::version } # shut up 'used once' warning
364 my $mods = $Module::CoreList::version{'5.009002'};
365 $mods = [ sort keys %$mods ];
368 foreach my $pkgnm (@$mods) {
375 { my $x = \*Data::Dumper::Indent } # shut up 'used once' warning
376 $Data::Dumper::Indent = 1;
377 print "Corrections: ", Dumper(\%report);
379 foreach my $pkg (sort keys %report) {
380 for my $type (keys %matchers) {
381 print "$pkg: $type: @{$report{$pkg}{$type}}\n"
382 if @{$report{$pkg}{$type}};