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|
#!./perl
BEGIN {
chdir 't' if -d 't';
require './test.pl';
set_up_inc('../lib');
}
use strict;
use warnings;
package FetchStoreCounter {
sub new { my $class = shift; return bless [@_], $class }
sub TIESCALAR { return shift->new(@_) }
sub FETCH { ${shift->[0]}++ }
sub STORE { ${shift->[1]}++ }
}
# booleans
{
use builtin qw( true false isbool );
ok(true, 'true is true');
ok(!false, 'false is false');
ok(isbool(true), 'true is bool');
ok(isbool(false), 'false is bool');
ok(!isbool(undef), 'undef is not bool');
ok(!isbool(1), '1 is not bool');
ok(!isbool(""), 'empty is not bool');
my $truevar = (5 == 5);
my $falsevar = (5 == 6);
ok(isbool($truevar), '$truevar is bool');
ok(isbool($falsevar), '$falsevar is bool');
ok(isbool(isbool(true)), 'isbool true is bool');
ok(isbool(isbool(123)), 'isbool false is bool');
# Invokes magic
tie my $tied, FetchStoreCounter => (\my $fetchcount, \my $storecount);
my $_dummy = isbool($tied);
is($fetchcount, 1, 'isbool() invokes FETCH magic');
$tied = isbool(false);
is($storecount, 1, 'isbool() TARG invokes STORE magic');
}
# weakrefs
{
use builtin qw( isweak weaken unweaken );
my $arr = [];
my $ref = $arr;
ok(!isweak($ref), 'ref is not weak initially');
weaken($ref);
ok(isweak($ref), 'ref is weak after weaken()');
unweaken($ref);
ok(!isweak($ref), 'ref is not weak after unweaken()');
weaken($ref);
undef $arr;
is($ref, undef, 'ref is now undef after arr is cleared');
}
# reference queries
{
use builtin qw( refaddr reftype blessed );
my $arr = [];
my $obj = bless [], "Object";
is(refaddr($arr), $arr+0, 'refaddr yields same as ref in numeric context');
is(refaddr("not a ref"), undef, 'refaddr yields undef for non-reference');
is(reftype($arr), "ARRAY", 'reftype yields type string');
is(reftype($obj), "ARRAY", 'reftype yields basic container type for blessed object');
is(reftype("not a ref"), undef, 'reftype yields undef for non-reference');
is(blessed($arr), undef, 'blessed yields undef for non-object');
is(blessed($obj), "Object", 'blessed yields package name for object');
# blessed() as a boolean
is(blessed($obj) ? "YES" : "NO", "YES", 'blessed in boolean context still works');
# blessed() appears false as a boolean on package "0"
is(blessed(bless [], "0") ? "YES" : "NO", "NO", 'blessed in boolean context handles "0" cornercase');
}
# ceil, floor
{
use builtin qw( ceil floor );
cmp_ok(ceil(1.5), '==', 2, 'ceil(1.5) == 2');
cmp_ok(floor(1.5), '==', 1, 'floor(1.5) == 1');
# Invokes magic
tie my $tied, FetchStoreCounter => (\my $fetchcount, \my $storecount);
my $_dummy = ceil($tied);
is($fetchcount, 1, 'ceil() invokes FETCH magic');
$tied = ceil(1.1);
is($storecount, 1, 'ceil() TARG invokes STORE magic');
$fetchcount = $storecount = 0;
tie $tied, FetchStoreCounter => (\$fetchcount, \$storecount);
$_dummy = floor($tied);
is($fetchcount, 1, 'floor() invokes FETCH magic');
$tied = floor(1.1);
is($storecount, 1, 'floor() TARG invokes STORE magic');
}
# imports are lexical; should not be visible here
{
my $ok = eval 'true()'; my $e = $@;
ok(!$ok, 'true() not visible outside of lexical scope');
like($e, qr/^Undefined subroutine &main::true called at /, 'failure from true() not visible');
}
# lexical imports work fine in a variety of situations
{
sub regularfunc {
use builtin 'true';
return true;
}
ok(regularfunc(), 'true in regular sub');
my sub lexicalfunc {
use builtin 'true';
return true;
}
ok(lexicalfunc(), 'true in lexical sub');
my $coderef = sub {
use builtin 'true';
return true;
};
ok($coderef->(), 'true in anon sub');
sub recursefunc {
use builtin 'true';
return recursefunc() if @_;
return true;
}
ok(recursefunc("rec"), 'true in self-recursive sub');
my $recursecoderef = sub {
use feature 'current_sub';
use builtin 'true';
return __SUB__->() if @_;
return true;
};
ok($recursecoderef->("rec"), 'true in self-recursive anon sub');
}
{
use builtin qw( true false );
my $val = true;
cmp_ok($val, $_, !!1, "true is equivalent to !!1 by $_") for qw( eq == );
cmp_ok($val, $_, !0, "true is equivalent to !0 by $_") for qw( eq == );
$val = false;
cmp_ok($val, $_, !!0, "false is equivalent to !!0 by $_") for qw( eq == );
cmp_ok($val, $_, !1, "false is equivalent to !1 by $_") for qw( eq == );
}
done_testing();
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