Get some tests in place for the MongoDB stuff

test/targets/test_mongo_target.py

@@ -0,0 +1,34 @@
+from pymongo import MongoClient
+from random import randint
+
+from metrik.targets.mongo_target import MongoTarget
+from metrik.conf import MONGO_DATABASE, MONGO_HOST, MONGO_PORT
+from test.mongo_test import MongoTest
+
+
+class MongoTargetTest(MongoTest):
+
+    def test_exists(self):
+        collection = 'test_collection'
+        id = 1234
+        t = MongoTarget(collection, id)
+        assert not t.exists()
+
+        t.persist({'a': 'b'})
+        assert t.exists()
+
+        db = MongoClient(MONGO_HOST, MONGO_PORT)[MONGO_DATABASE]
+        db_collection = db[collection]
+        db_collection.remove(id)
+        assert not t.exists()
+
+    def test_persist_retrieve(self):
+        collection = 'test_collection'
+        id = 1234
+        t = MongoTarget(collection, id)
+
+        d = {str(k): randint(0, 9999) for k in range(20)}
+        t.persist(d)
+
+        u = MongoTarget(collection, id)
+        assert u.retrieve() == d