#!/usr/bin/perl -w
use strict;
-use Test::More tests => 7;
+use Test::More tests => 18;
use Devel::Size ':all';
require Tie::Scalar;
'size increases due to magic');
}
-{
+SKIP: {
+ # bug in perl added in blead by commit 815f25c6e302f84e, fixed in commit
+ # f5c235e79ea25787, merged to maint-5.8 as 0710cc63c26afd0c and
+ # 8298b2e171ce84cf respectively.
+ skip("This triggers a formline assertion on $]", 4)
+ if $] > 5.008000 && $] < 5.008003;
my $string = 'Perl Rules';
my $before_size = total_size($string);
formline $string;
cmp_ok($after_size, '>', $before_size, 'Still larger than initial size');
cmp_ok($after_size, '<', $compiled_size, 'size decreases due to unmagic');
}
+
+{
+ my $string = 'Perl Rules';
+ my $before_size = total_size($string);
+ cmp_ok($before_size, '>', length $string,
+ 'Our string has a non-zero length');
+ tie $string, 'Tie::StdScalar';
+ my $after_size = total_size($string);
+ cmp_ok($after_size, '>', $before_size, 'size increases due to magic');
+ is($string, undef, 'No value yet');
+ # This is defineately cheating, in that we're poking inside the
+ # implementation of Tie::StdScalar, but if we just write to $string, the way
+ # magic works, the (nice long) value is first written to the regular scalar,
+ # then picked up by the magic. So it grows, which defeats the purpose of the
+ # test.
+ ${tied $string} = 'X' x 1024;
+ cmp_ok(total_size($string), '>', $after_size + 1024,
+ 'the magic object is counted');
+}
+
+SKIP: {
+ skip("v-strings didn't use magic before 5.8.1", 2) if $] < 5.008001;
+ my $v = eval 'v' . (0 x 1024);
+ is($v, "\0", 'v-string is \0');
+ cmp_ok(total_size($v), '>', 1024, 'total_size follows MG_PTR');
+}
+
+SKIP: {
+ skip("no UTF-8 caching before 5.8.1", 5) if $] < 5.008001;
+ my $string = "a\x{100}b";
+ my $before_size = total_size($string);
+ cmp_ok($before_size, '>', 0, 'Our string has a non-zero length');
+ is(length $string, 3, 'length is sane');
+ my $with_magic = total_size($string);
+ cmp_ok($with_magic, '>', $before_size, 'UTF-8 caching fired and counted');
+ is(index($string, "b"), 2, 'b is where we expect it');
+ cmp_ok(total_size($string), '>', $with_magic,
+ 'UTF-8 caching length table now present');
+}