t/op/smartmatch.t

   1 #!./perl
   2
   3 BEGIN {
   4     chdir 't';
   5     @INC = '../lib';
   6     require './test.pl';
   7 }
   8 use strict;
   9 use warnings;
  10 no warnings 'uninitialized';
  11
  12 use Tie::Array;
  13 use Tie::Hash;
  14 use if !$ENV{PERL_CORE_MINITEST}, "Tie::RefHash";
  15
  16 # Predeclare vars used in the tests:
  17 my @empty;
  18 my %empty;
  19 my @sparse; $sparse[2] = 2;
  20
  21 my $deep1 = []; push @$deep1, $deep1;
  22 my $deep2 = []; push @$deep2, $deep2;
  23
  24 my @nums = (1..10);
  25 tie my @tied_nums, 'Tie::StdArray';
  26 @tied_nums =  (1..10);
  27
  28 my %hash = (foo => 17, bar => 23);
  29 tie my %tied_hash, 'Tie::StdHash';
  30 %tied_hash = %hash;
  31
  32 {
  33     package Test::Object::NoOverload;
  34     sub new { bless { key => 1 } }
  35 }
  36
  37 {
  38     package Test::Object::StringOverload;
  39     use overload '""' => sub { "object" }, fallback => 1;
  40     sub new { bless { key => 1 } }
  41 }
  42
  43 {
  44     package Test::Object::WithOverload;
  45     sub new { bless { key => ($_[1] // 'magic') } }
  46     use overload '~~' => sub {
  47         my %hash = %{ $_[0] };
  48         if ($_[2]) { # arguments reversed ?
  49             return $_[1] eq reverse $hash{key};
  50         }
  51         else {
  52             return $_[1] eq $hash{key};
  53         }
  54     };
  55     use overload '""' => sub { "stringified" };
  56     use overload 'eq' => sub {"$_[0]" eq "$_[1]"};
  57 }
  58
  59 our $ov_obj = Test::Object::WithOverload->new;
  60 our $ov_obj_2 = Test::Object::WithOverload->new("object");
  61 our $obj = Test::Object::NoOverload->new;
  62 our $str_obj = Test::Object::StringOverload->new;
  63
  64 my %refh;
  65 if (!$ENV{PERL_CORE_MINITEST}) {
  66     tie %refh, 'Tie::RefHash';
  67     $refh{$ov_obj} = 1;
  68 }
  69
  70 my @keyandmore = qw(key and more);
  71 my @fooormore = qw(foo or more);
  72 my %keyandmore = map { $_ => 0 } @keyandmore;
  73 my %fooormore = map { $_ => 0 } @fooormore;
  74
  75 # Load and run the tests
  76 plan tests => 335;
  77
  78 while (<DATA>) {
  79   SKIP: {
  80     next if /^#/ || !/\S/;
  81     chomp;
  82     my ($yn, $left, $right, $note) = split /\t+/;
  83
  84     local $::TODO = $note =~ /TODO/;
  85
  86     die "Bad test spec: ($yn, $left, $right)" if $yn =~ /[^!@=]/;
  87
  88     my $tstr = "$left ~~ $right";
  89
  90     test_again:
  91     my $res;
  92     if ($note =~ /NOWARNINGS/) {
  93         $res = eval "no warnings; $tstr";
  94     }
  95     elsif ($note =~ /MINISKIP/ && $ENV{PERL_CORE_MINITEST}) {
  96         skip("Doesn't work with miniperl", $yn =~ /=/ ? 2 : 1);
  97     }
  98     else {
  99         $res = eval $tstr;
 100     }
 101
 102     chomp $@;
 103
 104     if ( $yn =~ /@/ ) {
 105         ok( $@ ne '', "$tstr dies" )
 106             and print "# \$\@ was: $@\n";
 107     } else {
 108         my $test_name = $tstr . ($yn =~ /!/ ? " does not match" : " matches");
 109         if ( $@ ne '' ) {
 110             fail($test_name);
 111             print "# \$\@ was: $@\n";
 112         } else {
 113             ok( ($yn =~ /!/ xor $res), $test_name );
 114         }
 115     }
 116
 117     if ( $yn =~ s/=// ) {
 118         $tstr = "$right ~~ $left";
 119         goto test_again;
 120     }
 121   }
 122 }
 123
 124 sub foo {}
 125 sub bar {42}
 126 sub gorch {42}
 127 sub fatal {die "fatal sub\n"}
 128
 129 # to test constant folding
 130 sub FALSE() { 0 }
 131 sub TRUE() { 1 }
 132 sub NOT_DEF() { undef }
 133
 134 # Prefix character :
 135 #   - expected to match
 136 # ! - expected to not match
 137 # @ - expected to be a compilation failure
 138 # = - expected to match symmetrically (runs test twice)
 139 # Data types to test :
 140 #   undef
 141 #   Object-overloaded
 142 #   Object
 143 #   Coderef
 144 #   Hash
 145 #   Hashref
 146 #   Array
 147 #   Arrayref
 148 #   Tied arrays and hashes
 149 #   Arrays that reference themselves
 150 #   Regex (// and qr//)
 151 #   Range
 152 #   Num
 153 #   Str
 154 # Other syntactic items of interest:
 155 #   Constants
 156 #   Values returned by a sub call
 157 __DATA__
 158 # Any ~~ undef
 159 !       $ov_obj         undef
 160 !       $obj            undef
 161 !       sub {}          undef
 162 !       %hash           undef
 163 !       \%hash          undef
 164 !       {}              undef
 165 !       @nums           undef
 166 !       \@nums          undef
 167 !       []              undef
 168 !       %tied_hash      undef
 169 !       @tied_nums      undef
 170 !       $deep1          undef
 171 !       /foo/           undef
 172 !       qr/foo/         undef
 173 !       21..30          undef
 174 !       189             undef
 175 !       "foo"           undef
 176 !       ""              undef
 177 !       !1              undef
 178         undef           undef
 179         (my $u)         undef
 180         NOT_DEF         undef
 181         &NOT_DEF        undef
 182
 183 # Any ~~ object overloaded
 184 !       \&fatal         $ov_obj
 185         'cigam'         $ov_obj
 186 !       'cigam on'      $ov_obj
 187 !       ['cigam']       $ov_obj
 188 !       ['stringified'] $ov_obj
 189 !       { cigam => 1 }  $ov_obj
 190 !       { stringified => 1 }    $ov_obj
 191 !       $obj            $ov_obj
 192 !       undef           $ov_obj
 193
 194 # regular object
 195 @       $obj            $obj
 196 @       $ov_obj         $obj
 197 =@      \&fatal         $obj
 198 @       \&FALSE         $obj
 199 @       \&foo           $obj
 200 @       sub { 1 }       $obj
 201 @       sub { 0 }       $obj
 202 @       %keyandmore     $obj
 203 @       {"key" => 1}    $obj
 204 @       @fooormore      $obj
 205 @       ["key" => 1]    $obj
 206 @       /key/           $obj
 207 @       qr/key/         $obj
 208 @       "key"           $obj
 209 @       FALSE           $obj
 210
 211 # regular object with "" overload
 212 @       $obj            $str_obj
 213 =@      \&fatal         $str_obj
 214 @       \&FALSE         $str_obj
 215 @       \&foo           $str_obj
 216 @       sub { 1 }       $str_obj
 217 @       sub { 0 }       $str_obj
 218 @       %keyandmore     $str_obj
 219 @       {"object" => 1} $str_obj
 220 @       @fooormore      $str_obj
 221 @       ["object" => 1] $str_obj
 222 @       /object/        $str_obj
 223 @       qr/object/      $str_obj
 224 @       "object"        $str_obj
 225 @       FALSE           $str_obj
 226 # Those will treat the $str_obj as a string because of fallback:
 227 !       $ov_obj         $str_obj
 228         $ov_obj_2       $str_obj
 229
 230 # object (overloaded or not) ~~ Any
 231         $obj            qr/NoOverload/
 232         $ov_obj         qr/^stringified$/
 233 =       "$ov_obj"       "stringified"
 234 =       "$str_obj"      "object"
 235 !=      $ov_obj         "stringified"
 236         $str_obj        "object"
 237         $ov_obj         'magic'
 238 !       $ov_obj         'not magic'
 239
 240 # ~~ Coderef
 241         sub{0}          sub { ref $_[0] eq "CODE" }
 242         %fooormore      sub { $_[0] =~ /^(foo|or|more)$/ }
 243 !       %fooormore      sub { $_[0] =~ /^(foo|or|less)$/ }
 244         \%fooormore     sub { $_[0] =~ /^(foo|or|more)$/ }
 245 !       \%fooormore     sub { $_[0] =~ /^(foo|or|less)$/ }
 246         +{%fooormore}   sub { $_[0] =~ /^(foo|or|more)$/ }
 247 !       +{%fooormore}   sub { $_[0] =~ /^(foo|or|less)$/ }
 248         @fooormore      sub { $_[0] =~ /^(foo|or|more)$/ }
 249 !       @fooormore      sub { $_[0] =~ /^(foo|or|less)$/ }
 250         \@fooormore     sub { $_[0] =~ /^(foo|or|more)$/ }
 251 !       \@fooormore     sub { $_[0] =~ /^(foo|or|less)$/ }
 252         [@fooormore]    sub { $_[0] =~ /^(foo|or|more)$/ }
 253 !       [@fooormore]    sub { $_[0] =~ /^(foo|or|less)$/ }
 254         %fooormore      sub{@_==1}
 255         @fooormore      sub{@_==1}
 256         "foo"           sub { $_[0] =~ /^(foo|or|more)$/ }
 257 !       "more"          sub { $_[0] =~ /^(foo|or|less)$/ }
 258         /fooormore/     sub{ref $_[0] eq 'Regexp'}
 259         qr/fooormore/   sub{ref $_[0] eq 'Regexp'}
 260         1               sub{shift}
 261 !       0               sub{shift}
 262 !       undef           sub{shift}
 263         undef           sub{not shift}
 264         NOT_DEF         sub{not shift}
 265         &NOT_DEF        sub{not shift}
 266         FALSE           sub{not shift}
 267         [1]             \&bar
 268         {a=>1}          \&bar
 269         qr//            \&bar
 270 !       [1]             \&foo
 271 !       {a=>1}          \&foo
 272         $obj            sub { ref($_[0]) =~ /NoOverload/ }
 273         $ov_obj         sub { ref($_[0]) =~ /WithOverload/ }
 274 # empty stuff matches, because the sub is never called:
 275         []              \&foo
 276         {}              \&foo
 277         @empty          \&foo
 278         %empty          \&foo
 279 !       qr//            \&foo
 280 !       undef           \&foo
 281         undef           \&bar
 282 @       undef           \&fatal
 283 @       1               \&fatal
 284 @       [1]             \&fatal
 285 @       {a=>1}          \&fatal
 286 @       "foo"           \&fatal
 287 @       qr//            \&fatal
 288 # sub is not called on empty hashes / arrays
 289         []              \&fatal
 290         +{}             \&fatal
 291         @empty          \&fatal
 292         %empty          \&fatal
 293 # sub is not special on the left
 294         sub {0}         qr/^CODE/
 295         sub {0}         sub { ref shift eq "CODE" }
 296
 297 # HASH ref against:
 298 #   - another hash ref
 299         {}              {}
 300 =!      {}              {1 => 2}
 301         {1 => 2}        {1 => 2}
 302         {1 => 2}        {1 => 3}
 303 =!      {1 => 2}        {2 => 3}
 304 =       \%main::        {map {$_ => 'x'} keys %main::}
 305
 306 #  - tied hash ref
 307 =       \%hash          \%tied_hash
 308         \%tied_hash     \%tied_hash
 309 !=      {"a"=>"b"}      \%tied_hash
 310 =       %hash           %tied_hash
 311         %tied_hash      %tied_hash
 312 !=      {"a"=>"b"}      %tied_hash
 313         $ov_obj         %refh           MINISKIP
 314 !       "$ov_obj"       %refh           MINISKIP
 315         [$ov_obj]       %refh           MINISKIP
 316 !       ["$ov_obj"]     %refh           MINISKIP
 317         %refh           %refh           MINISKIP
 318
 319 #  - an array ref
 320 #  (since this is symmetrical, tests as well hash~~array)
 321 =       [keys %main::]  \%::
 322 =       [qw[STDIN STDOUT]]      \%::
 323 =!      []              \%::
 324 =!      [""]            {}
 325 =!      []              {}
 326 =!      @empty          {}
 327 =       [undef]         {"" => 1}
 328 =       [""]            {"" => 1}
 329 =       ["foo"]         { foo => 1 }
 330 =       ["foo", "bar"]  { foo => 1 }
 331 =       ["foo", "bar"]  \%hash
 332 =       ["foo"]         \%hash
 333 =!      ["quux"]        \%hash
 334 =       [qw(foo quux)]  \%hash
 335 =       @fooormore      { foo => 1, or => 2, more => 3 }
 336 =       @fooormore      %fooormore
 337 =       @fooormore      \%fooormore
 338 =       \@fooormore     %fooormore
 339
 340 #  - a regex
 341 =       qr/^(fo[ox])$/          {foo => 1}
 342 =       /^(fo[ox])$/            %fooormore
 343 =!      qr/[13579]$/            +{0..99}
 344 =!      qr/a*/                  {}
 345 =       qr/a*/                  {b=>2}
 346 =       qr/B/i                  {b=>2}
 347 =       /B/i                    {b=>2}
 348 =!      qr/a+/                  {b=>2}
 349 =       qr/^à/                 {"à"=>2}
 350
 351 #  - a scalar
 352         "foo"           +{foo => 1, bar => 2}
 353         "foo"           %fooormore
 354 !       "baz"           +{foo => 1, bar => 2}
 355 !       "boz"           %fooormore
 356 !       1               +{foo => 1, bar => 2}
 357 !       1               %fooormore
 358         1               { 1 => 3 }
 359         1.0             { 1 => 3 }
 360 !       "1.0"           { 1 => 3 }
 361 !       "1.0"           { 1.0 => 3 }
 362         "1.0"           { "1.0" => 3 }
 363         "à"            { "à" => "À" }
 364
 365 #  - undef
 366 !       undef           { hop => 'zouu' }
 367 !       undef           %hash
 368 !       undef           +{"" => "empty key"}
 369 !       undef           {}
 370
 371 # ARRAY ref against:
 372 #  - another array ref
 373         []                      []
 374 =!      []                      [1]
 375         [["foo"], ["bar"]]      [qr/o/, qr/a/]
 376 !       [["foo"], ["bar"]]      [qr/ARRAY/, qr/ARRAY/]
 377         ["foo", "bar"]          [qr/o/, qr/a/]
 378 !       [qr/o/, qr/a/]          ["foo", "bar"]
 379         ["foo", "bar"]          [["foo"], ["bar"]]
 380 !       ["foo", "bar"]          [qr/o/, "foo"]
 381         ["foo", undef, "bar"]   [qr/o/, undef, "bar"]
 382 !       ["foo", undef, "bar"]   [qr/o/, "",    "bar"]
 383 !       ["foo", "", "bar"]      [qr/o/, undef, "bar"]
 384         $deep1                  $deep1
 385         @$deep1                 @$deep1
 386 !       $deep1                  $deep2
 387
 388 =       \@nums                  \@tied_nums
 389 =       @nums                   \@tied_nums
 390 =       \@nums                  @tied_nums
 391 =       @nums                   @tied_nums
 392
 393 #  - an object
 394 !       $obj            @fooormore
 395         $obj            [sub{ref shift}]
 396
 397 #  - a regex
 398 =       qr/x/           [qw(foo bar baz quux)]
 399 =!      qr/y/           [qw(foo bar baz quux)]
 400 =       /x/             [qw(foo bar baz quux)]
 401 =!      /y/             [qw(foo bar baz quux)]
 402 =       /FOO/i          @fooormore
 403 =!      /bar/           @fooormore
 404
 405 # - a number
 406         2               [qw(1.00 2.00)]
 407         2               [qw(foo 2)]
 408         2.0_0e+0        [qw(foo 2)]
 409 !       2               [qw(1foo bar2)]
 410
 411 # - a string
 412 !       "2"             [qw(1foo 2bar)]
 413         "2bar"          [qw(1foo 2bar)]
 414
 415 # - undef
 416         undef           [1, 2, undef, 4]
 417 !       undef           [1, 2, [undef], 4]
 418 !       undef           @fooormore
 419         undef           @sparse
 420         undef           [undef]
 421 !       0               [undef]
 422 !       ""              [undef]
 423 !       undef           [0]
 424 !       undef           [""]
 425
 426 # - nested arrays and ~~ distributivity
 427         11              [[11]]
 428 !       11              [[12]]
 429         "foo"           [{foo => "bar"}]
 430 !       "bar"           [{foo => "bar"}]
 431
 432 # Number against number
 433         2               2
 434         20              2_0
 435 !       2               3
 436         0               FALSE
 437         3-2             TRUE
 438 !       undef           0
 439 !       (my $u)         0
 440
 441 # Number against string
 442 =       2               "2"
 443 =       2               "2.0"
 444 !       2               "2bananas"
 445 !=      2_3             "2_3"           NOWARNINGS
 446         FALSE           "0"
 447 !       undef           "0"
 448 !       undef           ""
 449
 450 # Regex against string
 451         "x"             qr/x/
 452 !       "x"             qr/y/
 453
 454 # Regex against number
 455         12345           qr/3/
 456 !       12345           qr/7/
 457
 458 # array/hash against string
 459         @fooormore      "".\@fooormore
 460 !       @keyandmore     "".\@fooormore
 461         %fooormore      "".\%fooormore
 462 !       %keyandmore     "".\%fooormore
 463
 464 # Test the implicit referencing
 465         7               @nums
 466         @nums           \@nums
 467 !       @nums           \\@nums
 468         @nums           [1..10]
 469 !       @nums           [0..9]
 470
 471         "foo"           %hash
 472         /bar/           %hash
 473         [qw(bar)]       %hash
 474 !       [qw(a b c)]     %hash
 475         %hash           %hash
 476         %hash           +{%hash}
 477         %hash           \%hash
 478         %hash           %tied_hash
 479         %tied_hash      %tied_hash
 480         %hash           { foo => 5, bar => 10 }
 481 !       %hash           { foo => 5, bar => 10, quux => 15 }
 482
 483         @nums           {  1, '',  2, '' }
 484         @nums           {  1, '', 12, '' }
 485 !       @nums           { 11, '', 12, '' }
 486
 487 # UNDEF
 488 !       3               undef
 489 !       1               undef
 490 !       []              undef
 491 !       {}              undef
 492 !       \%::main        undef
 493 !       [1,2]           undef
 494 !       %hash           undef
 495 !       @nums           undef
 496 !       "foo"           undef
 497 !       ""              undef
 498 !       !1              undef
 499 !       \&foo           undef
 500 !       sub { }         undef