t/op/smartmatch.t

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