1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
#!/usr/bin/perl
use strict;
BEGIN {
$| = 1;
$^W = 1;
}
use Test::More;
use File::Spec::Functions ':ALL';
use Scalar::Util qw(
blessed
reftype
refaddr
);
use overload;
sub c_ok { is(
refaddr(_CALLABLE($_[0])),
refaddr($_[0]),
"callable: $_[1]",
) }
sub nc_ok { is(
_CALLABLE($_[0]),
undef,
"not callable: $_[1]"
) }
my @callables = (
"callable itself" => \&_CALLABLE,
"a boring plain code ref" => sub {},
'an object with overloaded &{}' => C::O->new,
'a object build from a coderef' => C::C->new,
'an object with inherited overloaded &{}' => C::O::S->new,
'a coderef blessed into CODE' => (bless sub {} => 'CODE'),
);
my @uncallables = (
"undef" => undef,
"a string" => "a string",
"a number" => 19780720,
"a ref to a ref to code" => \(sub {}),
"a boring plain hash ref" => {},
'a class that builds from coderefs' => "C::C",
'a class with overloaded &{}' => "C::O",
'a class with inherited overloaded &{}' => "C::O::S",
'a plain boring hash-based object' => UC->new,
'a non-coderef blessed into CODE' => (bless {} => 'CODE'),
);
plan tests => (@callables + @uncallables) / 2 + 3;
# Import the function
use_ok( 'Params::Util', '_CALLABLE' );
ok( defined *_CALLABLE{CODE}, '_CALLABLE imported ok' );
my $warnings = 0;
my $expected = (scalar(@callables) + scalar(@uncallables)) / 2;
local $SIG{__WARN__} = sub {
$warnings++;
return;
};
while ( @callables ) {
my ($name, $object) = splice @callables, 0, 2;
c_ok($object, $name);
}
while ( @uncallables ) {
my ($name, $object) = splice @uncallables, 0, 2;
nc_ok($object, $name);
}
is( $warnings, $expected, 'Caught the expected number of warnings' );
# callable: is a blessed code ref
package C::C;
sub new { bless sub {} => shift; }
# callable: overloads &{}
# but! only objects are callable, not class
package C::O;
sub new { bless {} => shift; }
use overload '&{}' => sub { sub {} };
use overload 'bool' => sub () { 1 };
# callable: subclasses C::O
package C::O::S;
use base 'C::O';
# uncallable: some boring object with no codey magic
package UC;
sub new { bless {} => shift; }
|
