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