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
|
#!perl
use strict;
use warnings;
# This test file exists to show that Time::Piece can be subclassed and that its
# methods will return objects of the class on which they're called.
use Test::More 'no_plan';
use lib "t/lib";
use Time::Piece::Twin;
BEGIN { use_ok('Time::Piece'); }
my $class = 'Time::Piece::Twin';
for my $method (qw(new localtime gmtime)) {
my $piece = $class->$method;
isa_ok($piece, $class, "timepiece made via $method");
}
{
my $piece = $class->strptime("2005-01-01", "%Y-%m-%d");
isa_ok($piece, $class, "timepiece made via strptime");
}
{
my $piece = $class->new;
isa_ok($piece, $class, "timepiece made via new (again)");
my $sum = $piece + 86_400;
isa_ok($sum, $class, "tomorrow via addition operator");
my $diff = $piece - 86_400;
isa_ok($diff, $class, "yesterday via subtraction operator");
}
{
my $g = $class->gmtime;
my $l = $class->localtime;
#via clone
my $l_clone = $class->new($l);
isa_ok($l_clone, $class, 'custom localtime via clone');
cmp_ok("$l_clone", 'eq', "$l", 'Clones match');
#via clone with gmtime
my $g_clone = $class->new($g);
isa_ok($g_clone, $class, 'custom gmtime via clone');
cmp_ok("$g_clone", 'eq', "$g", 'Clones match');
}
{
# let's verify that we can use gmtime from T::P without the export magic
my $piece = Time::Piece::gmtime;
isa_ok($piece, "Time::Piece", "object created via full-qualified gmtime");
isnt(ref $piece, 'Time::Piece::Twin', "it's not a Twin");
}
{
my $class = "Time::Piece::NumString";
my $piece = $class->strptime ("2006", "%Y");
is (2007 - $piece, 1,
"subtract attempts stringify for unrecognized objects.");
}
## Below is a package which only changes the stringify function.
{
package Time::Piece::NumString;
use base qw(Time::Piece);
use overload '""' => \&_stringify;
sub _stringify
{
my $self = shift;
return $self->strftime ("%Y");
}
}
|
