Test assigning to the key in an uvar callback

[perl/modules/Variable-Magic.git] / t / 28-uvar.t

diff --git a/t/28-uvar.t b/t/28-uvar.t
index b6c8959605c8c2173adbaa1c622369f61d3234c7..4906e72f1a867ce0bf8fd8ccea04c491fb0046a3 100644 (file)
--- a/t/28-uvar.t
+++ b/t/28-uvar.t
@@ -3,67 +3,93 @@
 use strict;
 use warnings;
 
+use Config qw/%Config/;
+
 use Test::More;
 
 use Variable::Magic qw/wizard cast dispell VMG_UVAR/;
 
 if (VMG_UVAR) {
- plan tests => 16;
+ plan tests => 2 * 9 + 7 + 12 + 1;
 } else {
  plan skip_all => 'No nice uvar magic for this perl';
 }
 
-my @c = (0) x 4;
-my @x = (0) x 4;
-
-sub check {
- for (0 .. 3) { return 0 unless $c[$_] == $x[$_]; }
- return 1;
-}
+use lib 't/lib';
+use Variable::Magic::TestWatcher;
 
-my $wiz = wizard 'fetch'  => sub { ++$c[0] },
-                 'store'  => sub { ++$c[1] },
-                 'exists' => sub { ++$c[2] },
-                 'delete' => sub { ++$c[3] };
-ok(check(), 'uvar : create wizard');
+my $wiz = init [ qw/fetch store exists delete/ ], 'uvar';
 
 my %h = (a => 1, b => 2, c => 3);
-my $res = cast %h, $wiz;
-
-ok($res,    'uvar : cast succeeded');
-ok(check(), 'uvar : cast didn\'t triggered the callback');
-
-my $x = $h{a};
-++$x[0];
-ok(check(), 'uvar : fetch directly');
-ok($x,      'uvar : fetch directly correctly');
-
-$x = "$h{b}";
-++$x[0];
-ok(check(), 'uvar : fetch by interpolation');
-ok($x == 2, 'uvar : fetch by interpolation correctly');
-
-$h{c} = 4;
-++$x[1];
-ok(check(), 'uvar : store directly');
-
-$x = $h{c} = 5;
-++$x[1];
-ok(check(), 'uvar : fetch and store');
-ok($x == 5, 'uvar : fetch and store correctly');
-
-$x = exists $h{c};
-++$x[2];
-ok(check(), 'uvar : exists');
-ok($x,      'uvar : exists correctly');
-
-$x = delete $h{c};
-++$x[3];
-ok(check(), 'uvar : delete existing key');
-ok($x == 5, 'uvar : delete existing key correctly');
-
-$x = delete $h{z};
-++$x[3];
-ok(check(),     'uvar : delete non-existing key');
-ok(!defined $x, 'uvar : delete non-existing key correctly');
+
+my $res = check { cast %h, $wiz } { }, 'cast';
+ok $res, 'uvar: cast succeeded';
+
+my $x;
+
+check { $x = $h{a} } { fetch => 1 }, 'fetch directly';
+is $x, 1, 'uvar: fetch directly correctly';
+
+check { $x = "$h{b}" } { fetch => 1 }, 'fetch by interpolation';
+is $x, 2, 'uvar: fetch by interpolation correctly';
+
+check { $h{c} = 4 } { store => 1 }, 'store directly';
+
+check { $x = $h{c} = 5 } { store => 1 }, 'fetch and store';
+is $x, 5, 'uvar: fetch and store correctly';
+
+check { $x = exists $h{c} } { exists => 1 }, 'exists';
+ok $x, 'uvar: exists correctly';
+
+check { $x = delete $h{c} } { delete => 1 }, 'delete existing key';
+is $x, 5, 'uvar: delete existing key correctly';
+
+check { $x = delete $h{z} } { delete => 1 }, 'delete non-existing key';
+ok !defined $x, 'uvar: delete non-existing key correctly';
+
+my $wiz2 = wizard fetch => sub { 0 };
+my %h2 = (a => 37, b => 2, c => 3);
+cast %h2, $wiz2;
+
+eval {
+ local $SIG{__WARN__} = sub { die };
+ $x = $h2{a};
+};
+is $@, '', 'uvar: fetch with incomplete magic doesn\'t croak';
+is $x, 37, 'uvar: fetch with incomplete magic correctly';
+
+eval {
+ local $SIG{__WARN__} = sub { die };
+ $h2{a} = 73;
+};
+is $@, '',     'uvar: store with incomplete magic doesn\'t croak';
+is $h2{a}, 73, 'uvar: store with incomplete magic correctly';
+
+my $wiz3 = wizard store => sub { ++$_[2]; 0 };
+my %h3 = (a => 3);
+cast %h3, $wiz3;
+
+for my $i (1 .. 2) {
+ eval { my $key = 'a'; $h3{$key} = 3 + $i };
+ is        $@,   '',  "uvar: change key in store doesn't croak ($i)";
+ is_deeply \%h3, { a => 3, b => 3 + $i },
+                      "uvar: change key in store correcty ($i)";
+}
+
+my $ro_bare_hk = $] >= 5.010 && $Config{useithreads};
+diag 'This perl has readonly bare hash keys' if $ro_bare_hk;
+
+for my $i (1 .. 2) {
+ eval { $h3{b} = 5 + $i };
+ if ($ro_bare_hk) {
+  like $@, qr/Modification\s+of\s+a\s+read-only\s+value/,
+                               "uvar: change readonly key in store croaks ($i)";
+  is_deeply \%h3, { a => 3, b => 5 },
+                             "uvar: change readonly key in store correcty ($i)";
+ } else {
+  is $@, '',                   "uvar: change readonly key in store croaks ($i)";
+  is_deeply \%h3, { a => 3, b => 5, c => 6, (d => 7) x ($i >= 2) },
+                             "uvar: change readonly key in store correcty ($i)";
+ }
+}