added enqueue_from_string

In some cases you might want to enqueue 
without reference to the class that will be doing
the work later. This method allows for reference
by string.

Author: Matt George

src/pyres/__init__.py

@@ -75,7 +75,9 @@ def enqueue(self, klass, *args):
             #print class_name
             self.push(queue, {'class':class_name,'args':args})
             #Job.create(queue, klass,*args)
-
+    def enqueue_from_string(self, klass_as_string, queue, *args):
+        self.push(queue, {'class':klass_as_string,'args':args})
+    
     def queues(self):
         return self.redis.smembers("queues")
 

src/tests.py

@@ -106,6 +106,16 @@ def test_workers(self):
         assert len(self.resq.workers()) == 1
         assert name in self.resq.workers()
 
+    def test_enqueue_from_string(self):
+        self.resq.enqueue_from_string('tests.Basic','basic','test1')
+        name = "%s:%s:%s" % (os.uname()[1],os.getpid(),'basic')
+        assert self.redis.llen("queue:basic") == 1
+        job = Job.reserve('basic', self.resq)
+        worker = Worker(['basic'])
+        worker.process(job)
+        assert not self.redis.get('worker:%s' % worker)
+        assert not self.redis.get("stat:failed")
+        assert not self.redis.get("stat:failed:%s" % name)
 
 class JobTests(PyResTests):
     def test_reserve(self):