X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=t%2F22-len.t;h=01a06dd932ccc8ae70f34f3c838ccd853f56c5dc;hb=442d92f66e46ee6b39285eec14de33419f2854c9;hp=ec74580a488a7bb4592bf49414f6b847b25f2f99;hpb=d12adc8d9392ea952a40cb7e46df8809256e8b48;p=perl%2Fmodules%2FVariable-Magic.git

diff --git a/t/22-len.t b/t/22-len.t
index ec74580..01a06dd 100644
--- a/t/22-len.t
+++ b/t/22-len.t
@@ -3,53 +3,167 @@
 use strict;
 use warnings;
 
-use Test::More tests => 13;
+use Test::More tests => 39 + (2 * 2 + 1);
 
-use Variable::Magic qw/wizard cast VMG_COMPAT_SCALAR_LENGTH_NOLEN/;
+use Variable::Magic qw/wizard cast dispell VMG_COMPAT_SCALAR_LENGTH_NOLEN/;
+
+use lib 't/lib';
+use Variable::Magic::TestValue;
 
 my $c = 0;
+
 my $n = 1 + int rand 1000;
-my $wiz = wizard len => sub { ++$c; return $n };
-is($c, 0, 'len : create wizard');
+my $d;
+my $wiz = wizard len => sub { $d = $_[2]; ++$c; return $n };
+is $c, 0, 'len: wizard() doesn\'t trigger magic';
 
 my @a = qw/a b c/;
 
+$c = 0;
 cast @a, $wiz;
-is($c, 0, 'len : cast on array');
+is $c, 0, 'len: cast on array doesn\'t trigger magic';
 
+$c = 0;
+$d = undef;
 my $b = scalar @a;
-is($c, 1,  'len : get array length');
-is($b, $n, 'len : get array length correctly');
+is $c, 1,  'len: get array length triggers magic correctly';
+is $d, 3,  'len: get array length have correct default length';
+is $b, $n, 'len: get array length correctly';
 
+$c = 0;
+$d = undef;
 $b = $#a;
-is($c, 2,      'len : get last array index');
-is($b, $n - 1, 'len : get last array index correctly');
+is $c, 1,      'len: get last array index triggers magic correctly';
+is $d, 3,      'len: get last array index have correct default length';
+is $b, $n - 1, 'len: get last array index correctly';
 
 $n = 0;
+
+$c = 0;
+$d = undef;
+$b = scalar @a;
+is $c, 1, 'len: get array length 0 triggers magic correctly';
+is $d, 3, 'len: get array length 0 have correct default length';
+is $b, 0, 'len: get array length 0 correctly';
+
+$n = undef;
+@a = ();
+cast @a, $wiz;
+
+$c = 0;
+$d = undef;
 $b = scalar @a;
-is($c, 3, 'len : get array length 0');
-is($b, 0, 'len : get array length 0 correctly');
+is $c, 1, 'len: get empty array length triggers magic correctly';
+is $d, 0, 'len: get empty array length have correct default length';
+is $b, 0, 'len: get empty array length correctly';
+
+$c = 0;
+$d = undef;
+$b = $#a;
+is $c, 1,  'len: get last empty array index triggers magic correctly';
+is $d, 0,  'len: get last empty array index have correct default length';
+is $b, -1, 'len: get last empty array index correctly';
 
 SKIP: {
- skip 'length() no longer calls mg_len magic' => 5 if VMG_COMPAT_SCALAR_LENGTH_NOLEN;
+ skip 'length() no longer calls mg_len magic' => 16 if VMG_COMPAT_SCALAR_LENGTH_NOLEN;
 
  $c = 0;
  $n = 1 + int rand 1000;
  # length magic on scalars needs also get magic to be triggered.
- $wiz = wizard get => sub { return 56478 },
-               len => sub { ++$c; return $n };
+ $wiz = wizard get => sub { return 'anything' },
+               len => sub { $d = $_[2]; ++$c; return $n };
 
- my $x = int rand 1000;
+ my $x = 6789;
 
+ $c = 0;
  cast $x, $wiz;
- is($c, 0, 'len : cast on scalar');
+ is $c, 0, 'len: cast on scalar doesn\'t trigger magic';
 
+ $c = 0;
+ $d = undef;
  $b = length $x;
- is($c, 1,  'len : get scalar length');
- is($b, $n, 'len : get scalar length correctly');
+ is $c, 1,  'len: get scalar length triggers magic correctly';
+ is $d, 4,  'len: get scalar length have correct default length';
+ is $b, $n, 'len: get scalar length correctly';
 
  $n = 0;
+
+ $c = 0;
+ $d = undef;
  $b = length $x;
- is($c, 2,  'len : get scalar length 0');
- is($b, $n, 'len : get scalar length 0 correctly');
+ is $c, 1,  'len: get scalar length 0 triggers magic correctly';
+ is $d, 4,  'len: get scalar length 0 have correct default length';
+ is $b, $n, 'len: get scalar length 0 correctly';
+
+ $n = undef;
+ $x = '';
+ cast $x, $wiz;
+
+ $c = 0;
+ $d = undef;
+ $b = length $x;
+ is $c, 1, 'len: get empty scalar length triggers magic correctly';
+ is $d, 0, 'len: get empty scalar length have correct default length';
+ is $b, 0, 'len: get empty scalar length correctly';
+
+ $x = "\x{20AB}ongs";
+ cast $x, $wiz;
+
+ {
+  use bytes;
+
+  $c = 0;
+  $d = undef;
+  $b = length $x;
+  is $c, 1,  'len: get utf8 scalar length in bytes triggers magic correctly';
+  is $d, 7,  'len: get utf8 scalar length in bytes have correct default length';
+  is $b, $d, 'len: get utf8 scalar length in bytes correctly';
+ }
+
+ $c = 0;
+ $d = undef;
+ $b = length $x;
+ is $c, 1,  'len: get utf8 scalar length triggers magic correctly';
+ is $d, 5,  'len: get utf8 scalar length have correct default length';
+ is $b, $d, 'len: get utf8 scalar length correctly';
+}
+
+{
+ our $c;
+ # length magic on scalars needs also get magic to be triggered.
+ my $wiz = wizard get => sub { 0 },
+                  len => sub { $d = $_[2]; ++$c; return $_[2] };
+
+ {
+  my $x = "banana";
+  cast $x, $wiz;
+
+  local $c = 0;
+  pos($x) = 2;
+  is $c, 1,        'len: pos scalar triggers magic correctly';
+  is $d, 6,        'len: pos scalar have correct default length';
+  is $x, 'banana', 'len: pos scalar works correctly'
+ }
+
+ {
+  my $x = "hl\x{20AB}gh"; # Force utf8 on string
+  cast $x, $wiz;
+
+  local $c = 0;
+  substr($x, 2, 1) = 'a';
+  is $c, 1,       'len: substr utf8 scalar triggers magic correctly';
+  is $d, 5,       'len: substr utf8 scalar have correct default length';
+  is $x, 'hlagh', 'len: substr utf8 scalar correctly';
+ }
+}
+
+{
+ my @val = (4 .. 6);
+
+ my $wv = init_value @val, 'len', 'len';
+
+ value { $val[-1] = 8 } [ 4, 5, 6 ];
+
+ dispell @val, $wv;
+ is_deeply \@val, [ 4, 5, 8 ], 'len: after value';
 }