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] }; $_[1] ~~ %hash };
  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 sub foo {}
  83 sub bar {42}
  84 sub gorch {42}
  85 sub fatal {die "fatal sub\n"}
  86
  87 # to test constant folding
  88 sub FALSE() { 0 }
  89 sub TRUE() { 1 }
  90
  91 # Prefix character :
  92 #   - expected to match
  93 # ! - expected to not match
  94 # @ - expected to be a compilation failure
  95 # = - expected to match symmetrically (runs test twice)
  96 # Data types to test :
  97 #   undef
  98 #   Object-overloaded
  99 #   Object
 100 #   Coderef
 101 #   Hash
 102 #   Hashref
 103 #   Array
 104 #   Arrayref
 105 #   Tied arrays and hashes
 106 #   Arrays that reference themselves
 107 #   Regex (// and qr//)
 108 #   Range
 109 #   Num
 110 #   Str
 111 # Other syntactic items of interest:
 112 #   Constants
 113 #   Values returned by a sub call
 114 __DATA__
 115 # Any ~~ undef
 116 !=      $ov_obj         undef
 117 !       $obj            undef
 118 !       sub {}          undef
 119 !       %hash           undef
 120 !       \%hash          undef
 121 !       {}              undef
 122 !       @nums           undef
 123 !       \@nums          undef
 124 !       []              undef
 125 !       %tied_hash      undef
 126 !       @tied_nums      undef
 127 !       $deep1          undef
 128 !       /foo/           undef
 129 !       qr/foo/         undef
 130 !       21..30          undef
 131 !       189             undef
 132 !       "foo"           undef
 133 !       ""              undef
 134 !       !1              undef
 135         undef           undef
 136         (my $u)         undef
 137
 138 # Any ~~ object overloaded
 139 # object overloaded ~~ Any
 140         $ov_obj         $ov_obj
 141 =!      $ov_obj         \&fatal
 142 =       $ov_obj         {"key" => 2}
 143 =!      $ov_obj         {"key" => 1, bar => 2}
 144 =       $ov_obj         /key/
 145 =!      $ov_obj         /bar/
 146
 147 # regular object
 148 =@      $obj    $ov_obj
 149 @       $obj    $obj
 150 =@      $obj    \&fatal
 151 =@      $obj    \&FALSE
 152 =@      $obj    \&foo
 153 =@      $obj    sub { 1 }
 154 =@      $obj    sub { 0 }
 155 =@      $obj    %keyandmore
 156 =@      $obj    {"key" => 1}
 157 =@      $obj    @fooormore
 158 =@      $obj    ["key" => 1]
 159 =@      $obj    /key/
 160 =@      $obj    qr/key/
 161 =@      $obj    "key"
 162 =@      $obj    FALSE
 163
 164 # ~~ Coderef
 165         sub{0}          sub { ref $_[0] eq "CODE" }
 166         %fooormore      sub { $_[0] =~ /^(foo|or|more)$/ }
 167 !       %fooormore      sub { $_[0] =~ /^(foo|or|less)$/ }
 168         \%fooormore     sub { $_[0] =~ /^(foo|or|more)$/ }
 169 !       \%fooormore     sub { $_[0] =~ /^(foo|or|less)$/ }
 170         +{%fooormore}   sub { $_[0] =~ /^(foo|or|more)$/ }
 171 !       +{%fooormore}   sub { $_[0] =~ /^(foo|or|less)$/ }
 172         @fooormore      sub { $_[0] =~ /^(foo|or|more)$/ }
 173 !       @fooormore      sub { $_[0] =~ /^(foo|or|less)$/ }
 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{@_==1}
 179         @fooormore      sub{@_==1}
 180         "foo"           sub { $_[0] =~ /^(foo|or|more)$/ }
 181 !       "more"          sub { $_[0] =~ /^(foo|or|less)$/ }
 182         /fooormore/     sub{ref $_[0] eq 'Regexp'}
 183         qr/fooormore/   sub{ref $_[0] eq 'Regexp'}
 184         1               sub{shift}
 185 !       0               sub{shift}
 186 !       undef           sub{shift}
 187         undef           sub{not shift}
 188         FALSE           sub{not shift}
 189         [1]             \&bar
 190         {a=>1}          \&bar
 191         qr//            \&bar
 192 !       [1]             \&foo
 193 !       {a=>1}          \&foo
 194 # empty stuff matches, because the sub is never called:
 195         []              \&foo
 196         {}              \&foo
 197 !       qr//            \&foo
 198 !       undef           \&foo
 199         undef           \&bar
 200 @       undef           \&fatal
 201 @       1               \&fatal
 202 @       [1]             \&fatal
 203 @       {a=>1}          \&fatal
 204 @       "foo"           \&fatal
 205 @       qr//            \&fatal
 206 # sub is not called on empty hashes / arrays
 207         []              \&fatal
 208         +{}             \&fatal
 209
 210 # HASH ref against:
 211 #   - another hash ref
 212         {}              {}
 213 =!      {}              {1 => 2}
 214         {1 => 2}        {1 => 2}
 215         {1 => 2}        {1 => 3}
 216 !       {1 => 2}        {2 => 3}
 217         \%main::        {map {$_ => 'x'} keys %main::}
 218
 219 #  - tied hash ref
 220         \%hash          \%tied_hash
 221         \%tied_hash     \%tied_hash
 222
 223 #  - an array ref
 224         [keys %main::]  \%::
 225 !       []              \%::
 226 !       [""]            {}
 227 !       []              {}
 228         [undef]         {"" => 1}
 229         [""]            {"" => 1}
 230         ["foo"]         { foo => 1 }
 231         ["foo", "bar"]  { foo => 1 }
 232         ["foo", "bar"]  \%hash
 233         ["foo"]         \%hash
 234 !       ["quux"]        \%hash
 235         [qw(foo quux)]  \%hash
 236
 237 #  - a regex
 238         qr/^(fo[ox])$/          {foo => 1}
 239 !       qr/[13579]$/            +{0..99}
 240 !       qr/a*/                  {}
 241         qr/a*/                  {b=>2}
 242
 243 #  - a string
 244         "foo"           +{foo => 1, bar => 2}
 245 !       "baz"           +{foo => 1, bar => 2}
 246
 247 #  - undef
 248 !       undef           %hash
 249 !       undef           +{"" => "empty key"}
 250 !       undef           {}
 251
 252 # ARRAY ref against:
 253 #  - another array ref
 254         []                      []
 255 !       []                      [1]
 256 !       [["foo"], ["bar"]]      [qr/o/, qr/a/]
 257         [["foo"], ["bar"]]      [qr/ARRAY/, qr/ARRAY/]
 258         ["foo", "bar"]          [qr/o/, qr/a/]
 259 !       ["foo", "bar"]          [qr/o/, "foo"]
 260         $deep1                  $deep1
 261 !       $deep1                  $deep2
 262
 263         \@nums                  \@tied_nums
 264
 265 #  - a regex
 266         qr/x/           [qw(foo bar baz quux)]
 267 !       qr/y/           [qw(foo bar baz quux)]
 268         /x/             [qw(foo bar baz quux)]
 269 !       /y/             [qw(foo bar baz quux)]
 270
 271 # - a number
 272         2               [qw(1foo 2bar)]
 273         2               [qw(foo 2)]
 274         2.0_0e+0        [qw(foo 2)]
 275 !       2               [qw(1foo bar2)]
 276
 277 # - a string
 278 !       "2"             [qw(1foo 2bar)]
 279         "2bar"          [qw(1foo 2bar)]
 280
 281 # Number against number
 282         2               2
 283         20              2_0
 284 !       2               3
 285         0               FALSE
 286         3-2             TRUE
 287         undef           0
 288
 289 # Number against string
 290 =       2               "2"
 291 =       2               "2.0"
 292 !       2               "2bananas"
 293 !=      2_3             "2_3"
 294         FALSE           "0"
 295
 296 # Regex against string
 297         "x"             qr/x/
 298 !       "x"             qr/y/
 299
 300 # Regex against number
 301         12345           qr/3/
 302
 303 # Test the implicit referencing
 304         7               @nums
 305         @nums           \@nums
 306 !       @nums           \\@nums
 307         @nums           [1..10]
 308 !       @nums           [0..9]
 309
 310         "foo"           %hash
 311         /bar/           %hash
 312         [qw(bar)]       %hash
 313 !       [qw(a b c)]     %hash
 314         %hash           %hash
 315         %hash           +{%hash}
 316         %hash           \%hash
 317         %hash           %tied_hash
 318         %tied_hash      %tied_hash
 319         %hash           { foo => 5, bar => 10 }
 320 !       %hash           { foo => 5, bar => 10, quux => 15 }
 321
 322         @nums           {  1, '',  2, '' }
 323         @nums           {  1, '', 12, '' }
 324 !       @nums           { 11, '', 12, '' }