diff --git a/tests/test_misc.py b/tests/test_misc.py
index a88a8c9..6e2dbb3 100755
--- a/tests/test_misc.py
+++ b/tests/test_misc.py
@@ -4,22 +4,22 @@ import unittest
 import util
 
 
-class TestVersion(unittest.TestCase):
+class TestMisc(unittest.TestCase):
     def test_version(self):
-        result = util.invokeNoError('version')
+        result = util.invoke('version')
         self.assertEqual(result, 5)
 
 
     def test_upgrade(self):
-        util.invokeNoError('upgrade')
+        util.invoke('upgrade')
 
 
     def test_sync(self):
-        util.invokeNoError('sync')
+        util.invoke('sync')
 
 
     def test_multi(self):
-        result = util.invokeNoError(
+        result = util.invoke(
             'multi', {
                 'actions': [
                     util.request('version'),
diff --git a/tests/util.py b/tests/util.py
index ba6d1d1..2657867 100644
--- a/tests/util.py
+++ b/tests/util.py
@@ -9,11 +9,12 @@ def request(action, params={}, version=5):
 def invoke(action, params={}, version=5, url='http://localhost:8765'):
     requestJson = json.dumps(request(action, params, version))
     response = json.load(urllib2.urlopen(urllib2.Request(url, requestJson)))
-    return response['result'], response['error']
-
-
-def invokeNoError(action, params={}, version=5, url='http://localhost:8765'):
-    result, error = invoke(action, params, version, url)
-    if error is not None:
-        raise Exception(error)
-    return result
+    if len(response) != 2:
+        raise Exception('response has an unexpected number of fields')
+    if 'error' not in response:
+        raise Exception('response is missing required error field')
+    if 'result' not in response:
+        raise Exception('response is missing required result field')
+    if response['error'] is not None:
+        raise Exception(response['error'])
+    return response['result']