diff --git a/tests/test_graph.py b/tests/test_graph.py
index 9d01912..576c7a5 100644
--- a/tests/test_graph.py
+++ b/tests/test_graph.py
@@ -1,22 +1,26 @@
 from graph import GraphState
 import tables as lc
+import time
+
 
 def demograph():
     g = GraphState()
-    g.add_edge(0,1)
-    g.add_edge(1,2)
-    g.add_edge(2,0)
-    g.add_edge(0,3)
-    g.add_edge(100,200)
+    g.add_edge(0, 1)
+    g.add_edge(1, 2)
+    g.add_edge(2, 0)
+    g.add_edge(0, 3)
+    g.add_edge(100, 200)
     return g
 
+
 def test_graph():
     g = demograph()
-    assert g.ngbh[0]==set([1,2,3])
-    g.del_edge(0,1)
-    assert g.ngbh[0]==set([2, 3])
-    assert g.has_edge(1,2)
-    assert not g.has_edge(0,1)
+    assert g.ngbh[0] == set([1, 2, 3])
+    g.del_edge(0, 1)
+    assert g.ngbh[0] == set([2, 3])
+    assert g.has_edge(1, 2)
+    assert not g.has_edge(0, 1)
+
 
 def test_local_complementation():
     """ Test that local complementation works as expected """
@@ -30,6 +34,7 @@ def test_local_complementation():
 
     # TODO: test VOP conditions
 
+
 def test_remove_vop():
     """ Test that removing VOPs really works """
     g = demograph()
@@ -42,12 +47,20 @@ def test_remove_vop():
     g.remove_vop(0, 1)
     assert g.vops[0] == lc.by_name["identity"]
 
+
 def test_edgelist():
     """ Test making edgelists """
     g = demograph()
     el = g.edgelist()
-    assert (0,3) in el
-    assert (0,2) in el
-    assert (100,200) in el
+    assert (0, 3) in el
+    assert (0, 2) in el
+    assert (100, 200) in el
 
 
+def test_million_sites():
+    """ Testing making really big graphs """
+    g = GraphState()
+    t = time.clock()
+    for i in xrange(100000):
+        g.add_edge(i, i + 1)
+    print time.clock() - t
diff --git a/tests/test_viz.py b/tests/test_viz.py
index 5254f0d..05350ec 100644
--- a/tests/test_viz.py
+++ b/tests/test_viz.py
@@ -8,6 +8,5 @@ def test_viz():
     g.add_edge(2,0)
     g.add_edge(0,3)
     g.add_edge(100,200)
-    print g.vops
     #g.remove_vop(0, 1)
     viz.draw(g)