diff --git a/artifice/interface.py b/artifice/interface.py
index 0340d2a..9b67a18 100644
--- a/artifice/interface.py
+++ b/artifice/interface.py
@@ -99,7 +99,6 @@ class Artifice(object):
             password=        config["openstack"]["password"],
             tenant_name=     config["openstack"]["default_tenant"],
             auth_url=        config["openstack"]["authentication_url"]
-            # auth_url="http://localhost:35357/v2.0"
         )
         conn_string = 'postgresql://%(username)s:%(password)s@%(host)s:%(port)s/%(database)s' % {
             "username": config["database"]["username"],
@@ -373,16 +372,6 @@ class Usage(object):
             vol.save()
 
 
-
-        # self.db.begin()
-        # for
-        # for dc in self.contents.iterkeys():
-        #     for section in self.contents[dc].iterkeys():
-        #         for meter in self.contents[dc][section]:
-        #             meter.save()
-        # self.conn.session.commit()
-        # raise NotImplementedError("Not implemented")
-
 class Resource(object):
 
     def __init__(self, resource, conn):
@@ -564,6 +553,7 @@ class Gauge(Artifact):
         """
         Default billable number for this volume
         """
+        # print "Usage is %s" % self.usage
         usage = sorted(self.usage, key=lambda x: x["timestamp"])
 
         blocks = []
@@ -573,11 +563,16 @@ class Gauge(Artifact):
             last["timestamp"] = datetime.datetime.strptime(last["timestamp"], date_format)
         except ValueError:
             last["timestamp"] = datetime.datetime.strptime(last["timestamp"], other_date_format)
+        except TypeError:
+            pass
+
         for val in usage[1:]:
             try:
                 val["timestamp"] = datetime.datetime.strptime(val["timestamp"], date_format)
             except ValueError:
                 val["timestamp"] = datetime.datetime.strptime(val["timestamp"], other_date_format)
+            except TypeError:
+                pass
 
             if (val['timestamp'] - last["timestamp"]) > datetime.timedelta(hours=1):
                 blocks.append(curr)
diff --git a/artifice/models/resources.py b/artifice/models/resources.py
index 4db6e0e..f29158a 100644
--- a/artifice/models/resources.py
+++ b/artifice/models/resources.py
@@ -28,6 +28,19 @@ class BaseModelConstruct(object):
     def _fetch_meter_name(self, name):
         return name
 
+    def usage(self):
+        dct = {}
+        for meter in self.relevant_meters:
+            meter = self._fetch_meter_name(meter)
+            try:
+                vol = self._raw.meter(meter, self.start, self.end).volume()
+                dct[meter] = vol
+            except AttributeError:
+                # This is OK. We're not worried about non-existent meters,
+                # I think. For now, anyway.
+                pass
+        return dct
+
     def save(self):
         for meter in self.relevant_meters:
             meter = self._fetch_meter_name(meter)
@@ -78,6 +91,10 @@ class VM(BaseModelConstruct):
         """floating IPs; this is a metered value"""
         return 0
 
+    @property
+    def name(self):
+        return self._raw["metadata"]["display_name"]
+
 
 class Object(BaseModelConstruct):
 
diff --git a/tests/test_instancing_objects.py b/tests/test_instancing_objects.py
index 85b550e..263e692 100644
--- a/tests/test_instancing_objects.py
+++ b/tests/test_instancing_objects.py
@@ -15,7 +15,7 @@ class TestInstancing(unittest.TestCase):
         pass
 
     @mock.patch("artifice.models.Session")
-    @mock.patch("keystoneclient.v2_0.client.Client")
+    @mock.patch("artifice.interface.keystone")
     @mock.patch("sqlalchemy.create_engine")
     def test_instance_artifice(self, sqlmock, keystone, session):
 
@@ -26,19 +26,24 @@ class TestInstancing(unittest.TestCase):
         config = {
             "main": {},
             "database": {
-                "username": "foo",
-                "password": "bar",
-                "host": "1234",
-                "port": "1234",
+                "username": "aurynn",
+                "password": "aurynn",
+                "host": "localhost",
+                "port": "5433",
                 "database": "artifice"
             },
             "openstack": {
                 "username": "foo",
                 "password": "bar",
                 "default_tenant":"asdf",
-                "authentication_url": "foo"
+                "authentication_url": "http://foo"
             },
-            "invoice": {}
+            "ceilometer": {
+                "host": 'http://whee'
+            },
+            "invoices": {
+                "plugin": "json"
+            }
         }
 
         a = Artifice(config)
diff --git a/tests/test_interface.py b/tests/test_interface.py
index 7147efc..10165eb 100644
--- a/tests/test_interface.py
+++ b/tests/test_interface.py
@@ -323,7 +323,45 @@ class TestInterface(unittest.TestCase):
         # Now examine the database
 
     def test_correct_usage_values(self):
-        pass
+        """Usage data matches expected results:
+
+        tests that we get the usage data we expect from the processing
+        system as developed.
+
+        """
+        self.test_get_usage()
+
+        usage = self.usage
+
+        for vm in usage.vms:
+            volume = vm.usage()
+            # print "vm is %s" % vm
+            # print vm.size
+            # print "Volume is: %s" % volume
+            # VM here is a resource object, not an underlying meter object.
+            id_ = vm["project_id"]
+
+            for rvm in self.resources:
+                if not rvm["project_id"] == id_:
+                    continue
+                for meter in rvm["links"]:
+                    if not meter["rel"] in volume:
+                        continue
+                    data = mappings[ meter["href"] ]
+                    vol = volume[ meter["rel"] ]
+
+                    type_ = data[0]["counter_type"]
+                    if type_ == "cumulative":
+                        v = interface.Cumulative(rvm, data, self.start, self.end)
+                    elif type_ == "gauge":
+                        v = interface.Gauge(rvm, data, self.start, self.end)
+                    elif type_ == "delta":
+                        v = interface.Delta(rvm, data, self.start, self.end)
+                    # Same type of data
+                    self.assertEqual( v.__class__, vol.__class__ )
+                    # Why are these different?
+                    self.assertEqual( v.volume(), vol.volume() )
+
 
     def test_use_a_bunch_of_data(self):
         pass