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#!./perl
use strict;
use warnings;
use Test::More tests => 19;
use Scalar::Util qw(looks_like_number);
foreach my $num (qw(1 -1 +1 1.0 +1.0 -1.0 -1.0e-12)) {
ok(looks_like_number($num), "'$num'");
}
is(!!looks_like_number("Inf"), $] >= 5.006001, 'Inf');
is(!!looks_like_number("Infinity"), $] >= 5.008, 'Infinity');
is(!!looks_like_number("NaN"), $] >= 5.008, 'NaN');
is(!!looks_like_number("foo"), '', 'foo');
is(!!looks_like_number(undef), '', 'undef');
is(!!looks_like_number({}), '', 'HASH Ref');
is(!!looks_like_number([]), '', 'ARRAY Ref');
use Math::BigInt;
my $bi = Math::BigInt->new('1234567890');
is(!!looks_like_number($bi), 1, 'Math::BigInt');
is(!!looks_like_number("$bi"), 1, 'Stringified Math::BigInt');
{ package Foo;
sub TIEHASH { bless {} }
sub FETCH { $_[1] }
}
my %foo;
tie %foo, 'Foo';
is(!!looks_like_number($foo{'abc'}), '', 'Tied');
is(!!looks_like_number($foo{'123'}), 1, 'Tied');
is(!!looks_like_number("\x{1815}"), '', 'MONGOLIAN DIGIT FIVE');
# We should copy some of perl core tests like t/base/num.t here
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