use strict;
use warnings;
-use Test::More tests => 13;
+use Test::More tests => 33;
use Variable::Magic qw/wizard cast VMG_COMPAT_SCALAR_LENGTH_NOLEN/;
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, 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, 2, 'len : get scalar length 0');
- is($b, $n, 'len : get scalar length 0 correctly');
+ 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';
}