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
  15 # Predeclare vars used in the tests:
  16 my @empty;
  17 my %empty;
  18 my @sparse; $sparse[2] = 2;
  19
  20 my $deep1 = []; push @$deep1, $deep1;
  21 my $deep2 = []; push @$deep2, $deep2;
  22
  23 my @nums = (1..10);
  24 tie my @tied_nums, 'Tie::StdArray';
  25 @tied_nums =  (1..10);
  26
  27 my %hash = (foo => 17, bar => 23);
  28 tie my %tied_hash, 'Tie::StdHash';
  29 %tied_hash = %hash;
  30
  31 {
  32     package Test::Object::NoOverload;
  33     sub new { bless { key => 1 } }
  34 }
  35
  36 {
  37     package Test::Object::StringOverload;
  38     use overload '""' => sub { "object" }, fallback => 1;
  39     sub new { bless { key => 1 } }
  40 }
  41
  42 {
  43     package Test::Object::WithOverload;
  44     sub new { bless { key => ($_[1] // 'magic') } }
  45     use overload '~~' => sub {
  46         my %hash = %{ $_[0] };
  47         if ($_[2]) { # arguments reversed ?
  48             return $_[1] eq reverse $hash{key};
  49         }
  50         else {
  51             return $_[1] eq $hash{key};
  52         }
  53     };
  54     use overload '""' => sub { "stringified" };
  55     use overload 'eq' => sub {"$_[0]" eq "$_[1]"};
  56 }
  57
  58 our $ov_obj = Test::Object::WithOverload->new;
  59 our $ov_obj_2 = Test::Object::WithOverload->new("object");
  60 our $obj = Test::Object::NoOverload->new;
  61 our $str_obj = Test::Object::StringOverload->new;
  62
  63 my %refh;
  64 unless (is_miniperl()) {
  65     require Tie::RefHash;
  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 { $_ => 0 } @fooormore;
  74
  75 # Load and run the tests
  76 plan tests => 349;
  77
  78 while (<DATA>) {
  79   SKIP: {
  80     next if /^#/ || !/\S/;
  81     chomp;
  82     my ($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     else {
  96         skip_if_miniperl("Doesn't work with miniperl", $yn =~ /=/ ? 2 : 1)
  97             if $note =~ /MINISKIP/;
  98         $res = eval $tstr;
  99     }
 100
 101     chomp $@;
 102
 103     if ( $yn =~ /@/ ) {
 104         ok( $@ ne '', "$tstr dies" )
 105             and print "# \$\@ was: $@\n";
 106     } else {
 107         my $test_name = $tstr . ($yn =~ /!/ ? " does not match" : " matches");
 108         if ( $@ ne '' ) {
 109             fail($test_name);
 110             print "# \$\@ was: $@\n";
 111         } else {
 112             ok( ($yn =~ /!/ xor $res), $test_name );
 113         }
 114     }
 115
 116     if ( $yn =~ s/=// ) {
 117         $tstr = "$right ~~ $left";
 118         goto test_again;
 119     }
 120   }
 121 }
 122
 123 sub foo {}
 124 sub bar {42}
 125 sub gorch {42}
 126 sub fatal {die "fatal sub\n"}
 127
 128 # to test constant folding
 129 sub FALSE() { 0 }
 130 sub TRUE() { 1 }
 131 sub NOT_DEF() { undef }
 132
 133 # Prefix character :
 134 #   - expected to match
 135 # ! - expected to not match
 136 # @ - expected to be a compilation failure
 137 # = - expected to match symmetrically (runs test twice)
 138 # Data types to test :
 139 #   undef
 140 #   Object-overloaded
 141 #   Object
 142 #   Coderef
 143 #   Hash
 144 #   Hashref
 145 #   Array
 146 #   Arrayref
 147 #   Tied arrays and hashes
 148 #   Arrays that reference themselves
 149 #   Regex (// and qr//)
 150 #   Range
 151 #   Num
 152 #   Str
 153 # Other syntactic items of interest:
 154 #   Constants
 155 #   Values returned by a sub call
 156 __DATA__
 157 # Any ~~ undef
 158 !       $ov_obj         undef
 159 !       $obj            undef
 160 !       sub {}          undef
 161 !       %hash           undef
 162 !       \%hash          undef
 163 !       {}              undef
 164 !       @nums           undef
 165 !       \@nums          undef
 166 !       []              undef
 167 !       %tied_hash      undef
 168 !       @tied_nums      undef
 169 !       $deep1          undef
 170 !       /foo/           undef
 171 !       qr/foo/         undef
 172 !       21..30          undef
 173 !       189             undef
 174 !       "foo"           undef
 175 !       ""              undef
 176 !       !1              undef
 177         undef           undef
 178         (my $u)         undef
 179         NOT_DEF         undef
 180         &NOT_DEF        undef
 181
 182 # Any ~~ object overloaded
 183 !       \&fatal         $ov_obj
 184         'cigam'         $ov_obj
 185 !       'cigam on'      $ov_obj
 186 !       ['cigam']       $ov_obj
 187 !       ['stringified'] $ov_obj
 188 !       { cigam => 1 }  $ov_obj
 189 !       { stringified => 1 }    $ov_obj
 190 !       $obj            $ov_obj
 191 !       undef           $ov_obj
 192
 193 # regular object
 194 @       $obj            $obj
 195 @       $ov_obj         $obj
 196 =@      \&fatal         $obj
 197 @       \&FALSE         $obj
 198 @       \&foo           $obj
 199 @       sub { 1 }       $obj
 200 @       sub { 0 }       $obj
 201 @       %keyandmore     $obj
 202 @       {"key" => 1}    $obj
 203 @       @fooormore      $obj
 204 @       ["key" => 1]    $obj
 205 @       /key/           $obj
 206 @       qr/key/         $obj
 207 @       "key"           $obj
 208 @       FALSE           $obj
 209
 210 # regular object with "" overload
 211 @       $obj            $str_obj
 212 =@      \&fatal         $str_obj
 213 @       \&FALSE         $str_obj
 214 @       \&foo           $str_obj
 215 @       sub { 1 }       $str_obj
 216 @       sub { 0 }       $str_obj
 217 @       %keyandmore     $str_obj
 218 @       {"object" => 1} $str_obj
 219 @       @fooormore      $str_obj
 220 @       ["object" => 1] $str_obj
 221 @       /object/        $str_obj
 222 @       qr/object/      $str_obj
 223 @       "object"        $str_obj
 224 @       FALSE           $str_obj
 225 # Those will treat the $str_obj as a string because of fallback:
 226
 227 # object (overloaded or not) ~~ Any
 228         $obj            qr/NoOverload/
 229         $ov_obj         qr/^stringified$/
 230 =       "$ov_obj"       "stringified"
 231 =       "$str_obj"      "object"
 232 !=      $ov_obj         "stringified"
 233         $str_obj        "object"
 234         $ov_obj         'magic'
 235 !       $ov_obj         'not magic'
 236
 237 # ~~ Coderef
 238         sub{0}          sub { ref $_[0] eq "CODE" }
 239         %fooormore      sub { $_[0] =~ /^(foo|or|more)$/ }
 240 !       %fooormore      sub { $_[0] =~ /^(foo|or|less)$/ }
 241         \%fooormore     sub { $_[0] =~ /^(foo|or|more)$/ }
 242 !       \%fooormore     sub { $_[0] =~ /^(foo|or|less)$/ }
 243         +{%fooormore}   sub { $_[0] =~ /^(foo|or|more)$/ }
 244 !       +{%fooormore}   sub { $_[0] =~ /^(foo|or|less)$/ }
 245         @fooormore      sub { $_[0] =~ /^(foo|or|more)$/ }
 246 !       @fooormore      sub { $_[0] =~ /^(foo|or|less)$/ }
 247         \@fooormore     sub { $_[0] =~ /^(foo|or|more)$/ }
 248 !       \@fooormore     sub { $_[0] =~ /^(foo|or|less)$/ }
 249         [@fooormore]    sub { $_[0] =~ /^(foo|or|more)$/ }
 250 !       [@fooormore]    sub { $_[0] =~ /^(foo|or|less)$/ }
 251         %fooormore      sub{@_==1}
 252         @fooormore      sub{@_==1}
 253         "foo"           sub { $_[0] =~ /^(foo|or|more)$/ }
 254 !       "more"          sub { $_[0] =~ /^(foo|or|less)$/ }
 255         /fooormore/     sub{ref $_[0] eq 'Regexp'}
 256         qr/fooormore/   sub{ref $_[0] eq 'Regexp'}
 257         1               sub{shift}
 258 !       0               sub{shift}
 259 !       undef           sub{shift}
 260         undef           sub{not shift}
 261         NOT_DEF         sub{not shift}
 262         &NOT_DEF        sub{not shift}
 263         FALSE           sub{not shift}
 264         [1]             \&bar
 265         {a=>1}          \&bar
 266         qr//            \&bar
 267 !       [1]             \&foo
 268 !       {a=>1}          \&foo
 269         $obj            sub { ref($_[0]) =~ /NoOverload/ }
 270         $ov_obj         sub { ref($_[0]) =~ /WithOverload/ }
 271 # empty stuff matches, because the sub is never called:
 272         []              \&foo
 273         {}              \&foo
 274         @empty          \&foo
 275         %empty          \&foo
 276 !       qr//            \&foo
 277 !       undef           \&foo
 278         undef           \&bar
 279 @       undef           \&fatal
 280 @       1               \&fatal
 281 @       [1]             \&fatal
 282 @       {a=>1}          \&fatal
 283 @       "foo"           \&fatal
 284 @       qr//            \&fatal
 285 # sub is not called on empty hashes / arrays
 286         []              \&fatal
 287         +{}             \&fatal
 288         @empty          \&fatal
 289         %empty          \&fatal
 290 # sub is not special on the left
 291         sub {0}         qr/^CODE/
 292         sub {0}         sub { ref shift eq "CODE" }
 293
 294 # HASH ref against:
 295 #   - another hash ref
 296         {}              {}
 297 =!      {}              {1 => 2}
 298         {1 => 2}        {1 => 2}
 299         {1 => 2}        {1 => 3}
 300 =!      {1 => 2}        {2 => 3}
 301 =       \%main::        {map {$_ => 'x'} keys %main::}
 302
 303 #  - tied hash ref
 304 =       \%hash          \%tied_hash
 305         \%tied_hash     \%tied_hash
 306 !=      {"a"=>"b"}      \%tied_hash
 307 =       %hash           %tied_hash
 308         %tied_hash      %tied_hash
 309 !=      {"a"=>"b"}      %tied_hash
 310         $ov_obj         %refh           MINISKIP
 311 !       "$ov_obj"       %refh           MINISKIP
 312         [$ov_obj]       %refh           MINISKIP
 313 !       ["$ov_obj"]     %refh           MINISKIP
 314         %refh           %refh           MINISKIP
 315
 316 #  - an array ref
 317 #  (since this is symmetrical, tests as well hash~~array)
 318 =       [keys %main::]  \%::
 319 =       [qw[STDIN STDOUT]]      \%::
 320 =!      []              \%::
 321 =!      [""]            {}
 322 =!      []              {}
 323 =!      @empty          {}
 324 =       [undef]         {"" => 1}
 325 =       [""]            {"" => 1}
 326 =       ["foo"]         { foo => 1 }
 327 =       ["foo", "bar"]  { foo => 1 }
 328 =       ["foo", "bar"]  \%hash
 329 =       ["foo"]         \%hash
 330 =!      ["quux"]        \%hash
 331 =       [qw(foo quux)]  \%hash
 332 =       @fooormore      { foo => 1, or => 2, more => 3 }
 333 =       @fooormore      %fooormore
 334 =       @fooormore      \%fooormore
 335 =       \@fooormore     %fooormore
 336
 337 #  - a regex
 338 =       qr/^(fo[ox])$/          {foo => 1}
 339 =       /^(fo[ox])$/            %fooormore
 340 =!      qr/[13579]$/            +{0..99}
 341 =!      qr/a*/                  {}
 342 =       qr/a*/                  {b=>2}
 343 =       qr/B/i                  {b=>2}
 344 =       /B/i                    {b=>2}
 345 =!      qr/a+/                  {b=>2}
 346 =       qr/^à/                 {"à"=>2}
 347
 348 #  - a scalar
 349         "foo"           +{foo => 1, bar => 2}
 350         "foo"           %fooormore
 351 !       "baz"           +{foo => 1, bar => 2}
 352 !       "boz"           %fooormore
 353 !       1               +{foo => 1, bar => 2}
 354 !       1               %fooormore
 355         1               { 1 => 3 }
 356         1.0             { 1 => 3 }
 357 !       "1.0"           { 1 => 3 }
 358 !       "1.0"           { 1.0 => 3 }
 359         "1.0"           { "1.0" => 3 }
 360         "à"            { "à" => "À" }
 361
 362 #  - undef
 363 !       undef           { hop => 'zouu' }
 364 !       undef           %hash
 365 !       undef           +{"" => "empty key"}
 366 !       undef           {}
 367
 368 # ARRAY ref against:
 369 #  - another array ref
 370         []                      []
 371 =!      []                      [1]
 372         [["foo"], ["bar"]]      [qr/o/, qr/a/]
 373 !       [["foo"], ["bar"]]      [qr/ARRAY/, qr/ARRAY/]
 374         ["foo", "bar"]          [qr/o/, qr/a/]
 375 !       [qr/o/, qr/a/]          ["foo", "bar"]
 376         ["foo", "bar"]          [["foo"], ["bar"]]
 377 !       ["foo", "bar"]          [qr/o/, "foo"]
 378         ["foo", undef, "bar"]   [qr/o/, undef, "bar"]
 379 !       ["foo", undef, "bar"]   [qr/o/, "",    "bar"]
 380 !       ["foo", "", "bar"]      [qr/o/, undef, "bar"]
 381         $deep1                  $deep1
 382         @$deep1                 @$deep1
 383 !       $deep1                  $deep2
 384
 385 =       \@nums                  \@tied_nums
 386 =       @nums                   \@tied_nums
 387 =       \@nums                  @tied_nums
 388 =       @nums                   @tied_nums
 389
 390 #  - an object
 391 !       $obj            @fooormore
 392         $obj            [sub{ref shift}]
 393
 394 #  - a regex
 395 =       qr/x/           [qw(foo bar baz quux)]
 396 =!      qr/y/           [qw(foo bar baz quux)]
 397 =       /x/             [qw(foo bar baz quux)]
 398 =!      /y/             [qw(foo bar baz quux)]
 399 =       /FOO/i          @fooormore
 400 =!      /bar/           @fooormore
 401
 402 # - a number
 403         2               [qw(1.00 2.00)]
 404         2               [qw(foo 2)]
 405         2.0_0e+0        [qw(foo 2)]
 406 !       2               [qw(1foo bar2)]
 407
 408 # - a string
 409 !       "2"             [qw(1foo 2bar)]
 410         "2bar"          [qw(1foo 2bar)]
 411
 412 # - undef
 413         undef           [1, 2, undef, 4]
 414 !       undef           [1, 2, [undef], 4]
 415 !       undef           @fooormore
 416         undef           @sparse
 417         undef           [undef]
 418 !       0               [undef]
 419 !       ""              [undef]
 420 !       undef           [0]
 421 !       undef           [""]
 422
 423 # - nested arrays and ~~ distributivity
 424         11              [[11]]
 425 !       11              [[12]]
 426         "foo"           [{foo => "bar"}]
 427 !       "bar"           [{foo => "bar"}]
 428
 429 # Number against number
 430         2               2
 431         20              2_0
 432 !       2               3
 433         0               FALSE
 434         3-2             TRUE
 435 !       undef           0
 436 !       (my $u)         0
 437
 438 # Number against string
 439 =       2               "2"
 440 =       2               "2.0"
 441 !       2               "2bananas"
 442 !=      2_3             "2_3"           NOWARNINGS
 443         FALSE           "0"
 444 !       undef           "0"
 445 !       undef           ""
 446
 447 # Regex against string
 448         "x"             qr/x/
 449 !       "x"             qr/y/
 450
 451 # Regex against number
 452         12345           qr/3/
 453 !       12345           qr/7/
 454
 455 # array/hash against string
 456         @fooormore      "".\@fooormore
 457 !       @keyandmore     "".\@fooormore
 458         %fooormore      "".\%fooormore
 459 !       %keyandmore     "".\%fooormore
 460
 461 # Test the implicit referencing
 462         7               @nums
 463         @nums           \@nums
 464 !       @nums           \\@nums
 465         @nums           [1..10]
 466 !       @nums           [0..9]
 467
 468         "foo"           %hash
 469         /bar/           %hash
 470         [qw(bar)]       %hash
 471 !       [qw(a b c)]     %hash
 472         %hash           %hash
 473         %hash           +{%hash}
 474         %hash           \%hash
 475         %hash           %tied_hash
 476         %tied_hash      %tied_hash
 477         %hash           { foo => 5, bar => 10 }
 478 !       %hash           { foo => 5, bar => 10, quux => 15 }
 479
 480         @nums           {  1, '',  2, '' }
 481         @nums           {  1, '', 12, '' }
 482 !       @nums           { 11, '', 12, '' }
 483
 484 # array slices
 485         @nums[0..-1]    []
 486         @nums[0..0]     [1]
 487 !       @nums[0..1]     [0..2]
 488         @nums[0..4]     [1..5]
 489
 490 !       undef           @nums[0..-1]
 491         1               @nums[0..0]
 492         2               @nums[0..1]
 493 !       @nums[0..1]     2
 494
 495         @nums[0..1]     @nums[0..1]
 496
 497 # hash slices
 498         @keyandmore{qw(not)}            [undef]
 499         @keyandmore{qw(key)}            [0]
 500
 501         undef                           @keyandmore{qw(not)}
 502         0                               @keyandmore{qw(key and more)}
 503 !       2                               @keyandmore{qw(key and)}
 504
 505         @fooormore{qw(foo)}             @keyandmore{qw(key)}
 506         @fooormore{qw(foo or more)}     @keyandmore{qw(key and more)}
 507
 508 # UNDEF
 509 !       3               undef
 510 !       1               undef
 511 !       []              undef
 512 !       {}              undef
 513 !       \%::main        undef
 514 !       [1,2]           undef
 515 !       %hash           undef
 516 !       @nums           undef
 517 !       "foo"           undef
 518 !       ""              undef
 519 !       !1              undef
 520 !       \&foo           undef
 521 !       sub { }         undef