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