--- a/tests/doctest.txt	Thu Dec 13 18:05:39 2012 -0800
+++ b/tests/doctest.txt	Thu Dec 13 18:11:52 2012 -0800
@@ -5,3 +5,35 @@
 
     >>> from wsgraph.model import MemoryCache
 
+Make a graph:
+
+    >>> graph = MemoryCache()
+
+The graph starts off empty:
+
+    >>> graph() == {'nodes': {}, 'edges': {}}
+    True
+    >>> graph.nodes()
+    []
+    >>> graph.edges()
+    []
+    >>> graph.node('A') is None
+    True
+    >>> graph['A'] is None
+    True
+    >>> graph.edge('A', 'B') is None
+    True
+    >>> graph[('A', 'B')] is None
+    True
+    >>> 'A' in graph
+    False
+    >>> ('A', 'B') in graph
+    False
+
+Let's add stuff to it:
+
+    >>> nodeA = {'hello': "is it me you're looking for?"}
+    >>> graph['A'] = nodeA
+    >>> graph.edge('A', 'B', foo='bar')
+    >>> 'A' in graph
+    True