Fix for FETCH/NEXTKEY problem in all *DB*_File modules

[p5sagit/p5-mst-13.2.git] / ext / GDBM_File / gdbm.t

diff --git a/ext/GDBM_File/gdbm.t b/ext/GDBM_File/gdbm.t
index 3ba19e8..7c26893 100755 (executable)
--- a/ext/GDBM_File/gdbm.t
+++ b/ext/GDBM_File/gdbm.t
@@ -18,7 +18,7 @@ use warnings;
 
 use GDBM_File;
 
-print "1..68\n";
+print "1..74\n";
 
 unlink <Op.dbmx*>;
 
@@ -425,3 +425,46 @@ EOM
     untie %h;
     unlink <Op.dbmx*>;
 }
+
+{
+    # When iterating over a tied hash using "each", the key passed to FETCH
+    # will be recycled and passed to NEXTKEY. If a Source Filter modifies the
+    # key in FETCH via a filter_fetch_key method we need to check that the
+    # modified key doesn't get passed to NEXTKEY.
+    # Also Test "keys" & "values" while we are at it.
+
+    use warnings ;
+    use strict ;
+    use GDBM_File ;
+
+    unlink <Op.dbmx*>;
+    my $bad_key = 0 ;
+    my %h = () ;
+    ok(69, my $db = tie(%h, 'GDBM_File','Op.dbmx', &GDBM_WRCREAT, 0640));
+    $db->filter_fetch_key (sub { $_ =~ s/^Beta_/Alpha_/ if defined $_}) ;
+    $db->filter_store_key (sub { $bad_key = 1 if /^Beta_/ ; $_ =~ s/^Alpha_/Beta_/}) ;
+
+    $h{'Alpha_ABC'} = 2 ;
+    $h{'Alpha_DEF'} = 5 ;
+
+    ok(70, $h{'Alpha_ABC'} == 2);
+    ok(71, $h{'Alpha_DEF'} == 5);
+
+    my ($k, $v) = ("","");
+    while (($k, $v) = each %h) {}
+    ok(72, $bad_key == 0);
+
+    $bad_key = 0 ;
+    foreach $k (keys %h) {}
+    ok(73, $bad_key == 0);
+
+    $bad_key = 0 ;
+    foreach $v (values %h) {}
+    ok(74, $bad_key == 0);
+
+    undef $db ;
+    untie %h ;
+    unlink <Op.dbmx*>;
+}
+
+exit ;