make it impossible to have a locked working tag

lib/WebGUI/VersionTag.pm

@@ -438,15 +438,15 @@ sub getWorking {
     #First see if there is already a version tag
     $tag = $stow->get(q{versionTag});
 
-    return $tag if $tag;
+    return $tag if ($tag && !$tag->isLocked);
 
     $tagId = $session->scratch()->get(q{versionTag});
     if ($tagId) {
         $tag = $class->new($session, $tagId);
-
-        $stow->set(q{versionTag}, $tag);
-
-        return $tag;
+        unless ($tag->isLocked) {
+            $stow->set(q{versionTag}, $tag);
+            return $tag;
+        }
     }
 
     #No tag found. Create or reclaim one?
@@ -475,10 +475,10 @@ sub getWorking {
         # For now, we only reclaim if 1 tag open.
         if (scalar @openTags == 1) {
             $tag = $openTags[0];
-
-            $tag->setWorking();
-
-            return $tag;
+            unless ($tag->isLocked) {
+                $tag->setWorking();
+                return $tag;
+            }
         }
     }
     elsif ($mode eq q{siteWide}) {
@@ -486,7 +486,7 @@ sub getWorking {
 
       OPENTAG:
         foreach my $openTag (@{WebGUI::VersionTag->getOpenTags($session)}) {
-            if ($openTag->get(q{isSiteWide})) {
+            if ($openTag->get(q{isSiteWide}) && !$openTag->isLocked) {
 
                 $tag = $openTag;
 
@@ -515,6 +515,16 @@ sub getWorking {
 
 #-------------------------------------------------------------------
 
+=head2 isLocked ( )
+
+Returns boolean value indicating whether tag is locked
+
+=cut
+
+sub isLocked { $_[0]{_data}{isLocked} }
+
+#-------------------------------------------------------------------
+
 =head2 leaveTag ( )
 
 Make the user leave their current tag.
@@ -734,6 +744,7 @@ Sets this tag as the working tag for the current user.
 
 sub setWorking {
 	my $self = shift;
+	return if $self->isLocked;
 	$self->session->scratch->set("versionTag",$self->getId);
 	$self->session->stow->set("versionTag", $self);
 }

t/VersionTag.t

@@ -14,7 +14,7 @@ use lib "$FindBin::Bin/lib";
 use WebGUI::Test;
 use WebGUI::Session;
 use WebGUI::VersionTag;
-use Test::More tests => 74; # increment this value for each test you create
+use Test::More tests => 81; # increment this value for each test you create
 
 my $session = WebGUI::Test->session;
 
@@ -105,14 +105,36 @@ $tag->clearWorking;
 ok(!defined getWorking(1), 'working tag unset');
 
 ok(!scalar $tag->get('isLocked'), 'tag is initially unlocked');
+ok(!$tag->isLocked,'accessor for isLocked works on false');
 $tag->lock;
 ok(scalar $tag->get('isLocked'), 'tag is locked');
+ok($tag->isLocked, 'accessor for isLocked works on true');
 ok_open($tag->getId, 0, 'locked tag');
 $tag->unlock;
 ok(!scalar $tag->get('isLocked'), 'tag is again unlocked');
 ok_open($tag->getId, 1, 'unlocked tag');
 
-# TODO: test interaction between lock/unlock and working tags
+# test interaction between lock/unlock and working tags
+my $locker = WebGUI::VersionTag->create($session);
+$locker->setWorking();
+is getWorking(1), $locker, 'working tag is the one we are about to lock';
+
+$locker->lock();
+ok !defined getWorking(1), 'lock clears working';
+
+my $unlocked = WebGUI::VersionTag->create($session);
+$unlocked->setWorking();
+is getWorking(1), $unlocked, 'working tag is fresh';
+$locker->setWorking();
+is getWorking(1), $unlocked, 'setWorking on locked tag does nothing';
+$unlocked->clearWorking;
+$unlocked->rollback;
+
+$session->stow->set(versionTag => $locker);
+$session->scratch->set(versionTag => $locker->getId);
+isnt getWorking(1), $locker, 'getWorking never returns locked tag';
+$locker->clearWorking;
+$locker->rollback;
 
 my $tagAgain1 = WebGUI::VersionTag->new($session, $tag->getId);
 isa_ok($tagAgain1, 'WebGUI::VersionTag', 'tag retrieved again while valid');