X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Fbasic.t;h=55e5278cb33342b7aefc054ad47a17ccfd77e692;hb=5f04c81daf0e38670b8dac45bd369bc508da50b6;hp=b096f73fc39111fa3174aa31f85e11bb031c8278;hpb=5c2e1b1290f2cc1677c307216577384513f45430;p=p5sagit%2FDevel-Size.git

diff --git a/t/basic.t b/t/basic.t
index b096f73..55e5278 100644
--- a/t/basic.t
+++ b/t/basic.t
@@ -1,20 +1,102 @@
-# Before `make install' is performed this script should be runnable with
-# `make test'. After `make install' it should work as `perl test.pl'
+#!/usr/bin/perl -w
 
-######################### We start with some black magic to print on failure.
+use Test::More tests => 15;
+use strict;
+use Devel::Size qw(size total_size);
+use Scalar::Util qw(weaken);
 
-# Change 1..1 below to 1..last_test_to_print .
-# (It may become useful if the test is moved to ./t subdirectory.)
+can_ok ('Devel::Size', qw/
+  size
+  total_size
+  /);
 
-BEGIN { $| = 1; print "1..1\n"; }
-END {print "not ok 1\n" unless $loaded;}
-use Devel::Size;
-$loaded = 1;
-print "ok 1\n";
+die ("Uhoh, test uses an outdated version of Devel::Size")
+  unless is ($Devel::Size::VERSION, '0.73_50', 'VERSION MATCHES');
 
-######################### End of black magic.
+#############################################################################
+# some basic checks:
 
-# Insert your test code below (better if it prints "ok 13"
-# (correspondingly "not ok 13") depending on the success of chunk 13
-# of the test code):
+use vars qw($foo @foo %foo);
+$foo = "12";
+@foo = (1,2,3);
+%foo = (a => 1, b => 2);
 
+my $x = "A string";
+my $y = "A much much longer string";        # need to be at least 7 bytes longer for 64 bit
+cmp_ok(size($x), '<', size($y), 'size() of strings');
+cmp_ok(total_size($x), '<', total_size($y), 'total_size() of strings');
+
+my @x = (1..4);
+my @y = (1..200);
+
+my $size_1 = total_size(\@x);
+my $size_2 = total_size(\@y);
+
+cmp_ok($size_1, '<', $size_2, 'size() of array refs');
+
+# the arrays alone shouldn't be the same size
+$size_1 = size(\@x);
+$size_2 = size(\@y);
+
+isnt ( $size_1, $size_2, 'size() of array refs');
+
+#############################################################################
+# IV vs IV+PV (bug #17586)
+
+$x = 12;
+$y = 12; $y .= '';
+
+$size_1 = size($x);
+$size_2 = size($y);
+
+cmp_ok($size_1, '<', $size_2, ' ."" makes string longer');
+
+#############################################################################
+# check that the tracking_hash is working
+
+my($a,$b) = (1,2);
+my @ary1 = (\$a, \$a);
+my @ary2 = (\$a, \$b);
+
+cmp_ok(total_size(\@ary1), '<', total_size(\@ary2),
+       'the tracking hash is working');
+
+#############################################################################
+# check that circular references don't mess things up
+
+my($c1,$c2); $c2 = \$c1; $c1 = \$c2;
+
+is (total_size($c1), total_size($c2), 'circular references');
+
+#############################################################################
+# GLOBS
+
+cmp_ok(total_size(*foo), '>', 0, 'total_size(*foo) > 0');
+
+#############################################################################
+# CODE ref
+
+my $code = sub { '1' };
+
+cmp_ok(total_size($code), '>', 0, 'total_size($code) > 0');
+
+##########################################################
+# RT#14849 (& RT#26781 and possibly RT#29238?)
+cmp_ok( total_size( sub{ do{ my $t=0 }; } ), '>', 0,
+	'total_size( sub{ my $t=0 } ) > 0' );
+
+# CPAN RT #58484 and #58485
+cmp_ok(total_size(\&total_size), '>', 0, 'total_size(\&total_size) > 0');
+
+use constant LARGE => 'N' x 8192;
+
+cmp_ok (total_size(\&LARGE), '>', 8192,
+        'total_size for a constant includes the constant');
+
+{
+    my $a = [];
+    my $b = \$a;
+    weaken $b;
+    cmp_ok(total_size($a), '>', total_size([]),
+	   'making a weakref upgrades the target to PVMG and adds magic');
+}