t/20_DPeek.t

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5
   6 use Test::More;
   7
   8 use Data::Peek;
   9
  10 $| = 1;
  11
  12 my $peek = DPeek (0);
  13 if ($peek =~ m/^Your perl did not/) {
  14     plan skip_all => $peek;
  15     }
  16 else {
  17     plan tests => 49;
  18     }
  19
  20 like (DPeek ($/), qr'^PVMG\("\\(n|12)"\\0\)',   '$/');
  21   is (DPeek ($\),    'PVMG()',                  '$\\');
  22   is (DPeek ($.),    'PVMG()',                  '$.');
  23 like (DPeek ($,), qr'^PVMG\((""\\0)?\)|^UNDEF$','$,');
  24   is (DPeek ($;),    'PV("\34"\0)',             '$;');
  25   is (DPeek ($"),    'PV(" "\0)',               '$"');
  26 like (DPeek ($:), qr'^PVMG\(" \\(n|12)-"\\0\)', '$:');
  27   is (DPeek ($~),    'PVMG()',                  '$~');
  28   is (DPeek ($^),    'PVMG()',                  '$^');
  29   is (DPeek ($=),    'PVMG()',                  '$=');
  30   is (DPeek ($-),    'PVMG()',                  '$-');
  31   is (DPeek ($|),    'PVMG(1)',                 '$|');
  32 like (DPeek ($?), qr'^PV(MG|LV)\(\)',           '$?');
  33 like (DPeek ($!), qr'^PVMG\("',                 '$!');
  34
  35   "abc" =~ m/(b)/;      # Don't know why these magic vars have this content
  36 like (DPeek ($1), qr'^PVMG\("',                 ' $1');
  37   is (DPeek ($`),    'PVMG()',                  ' $`');
  38   is (DPeek ($&),    'PVMG()',                  ' $&');
  39   is (DPeek ($'),    'PVMG()',                  " \$'");
  40
  41   is (DPeek (undef), 'SV_UNDEF',                'undef');
  42   is (DPeek (1),     'IV(1)',                   'constant 1');
  43   is (DPeek (""),    'PV(""\0)',                'constant ""');
  44   is (DPeek (1.),    'NV(1)',                   'constant 1.');
  45   is (DPeek (\1),    '\IV(1)',                  'constant \1');
  46   is (DPeek (\\1),   '\\\IV(1)',                'constant \\\1');
  47
  48   is (DPeek (\@ARGV),   '\AV()',                '\@ARGV');
  49   is (DPeek (\@INC),    '\AV()',                '\@INC');
  50   is (DPeek (\%INC),    '\HV()',                '\%INC');
  51   is (DPeek (*STDOUT),  'GV()',                 '*STDOUT');
  52   is (DPeek (sub {}),   '\CV(__ANON__)',        'sub {}');
  53
  54 { our ($VAR, @VAR, %VAR);
  55   open VAR, ">VAR.txt";
  56   sub VAR {}
  57   format VAR =
  58 .
  59   END { unlink "VAR.txt" };
  60
  61   is (DPeek ( $VAR),    'UNDEF',                ' $VAR undef');
  62   is (DPeek (\$VAR),    '\UNDEF',               '\$VAR undef');
  63   $VAR = 1;
  64   is (DPeek ($VAR),     'IV(1)',                ' $VAR 1');
  65   is (DPeek (\$VAR),    '\IV(1)',               '\$VAR 1');
  66   $VAR = "";
  67   is (DPeek ($VAR),     'PVIV(""\0)',           ' $VAR ""');
  68   is (DPeek (\$VAR),    '\PVIV(""\0)',          '\$VAR ""');
  69   $VAR = "\xa8";
  70   is (DPeek ($VAR),     'PVIV("\250"\0)',       ' $VAR "\xa8"');
  71   is (DPeek (\$VAR),    '\PVIV("\250"\0)',      '\$VAR "\xa8"');
  72   SKIP: {
  73       $] <= 5.008001 and skip "UTF8 tests useless in this ancient perl version", 1;
  74       $VAR = "a\x0a\x{20ac}";
  75       like (DPeek ($VAR), qr'^PVIV\("a\\(n|12)\\342\\202\\254"\\0\) \[UTF8 "a\\?n\\x{20ac}"\]',
  76                                                   ' $VAR "a\x0a\x{20ac}"');
  77       }
  78   $VAR = sub { "VAR" };
  79   is (DPeek ($VAR),     '\CV(__ANON__)',        ' $VAR sub { "VAR" }');
  80   is (DPeek (\$VAR),    '\\\CV(__ANON__)',      '\$VAR sub { "VAR" }');
  81   $VAR = 0;
  82
  83   is (DPeek (\&VAR),    '\CV(VAR)',             '\&VAR');
  84   is (DPeek ( *VAR),    'GV()',                 ' *VAR');
  85
  86   is (DPeek (*VAR{GLOB}),       '\GV()',        ' *VAR{GLOB}');
  87 like (DPeek (*VAR{SCALAR}), qr'\\PV(IV|MG)\(0\)',' *VAR{SCALAR}');
  88   is (DPeek (*VAR{ARRAY}),      '\AV()',        ' *VAR{ARRAY}');
  89   is (DPeek (*VAR{HASH}),       '\HV()',        ' *VAR{HASH}');
  90   is (DPeek (*VAR{CODE}),       '\CV(VAR)',     ' *VAR{CODE}');
  91   is (DPeek (*VAR{IO}),         '\IO()',        ' *VAR{IO}');
  92   is (DPeek (*VAR{FORMAT}),$]<5.008?'SV_UNDEF':'\FM()',' *VAR{FORMAT}');
  93   }
  94
  95 1;