From e794cbc0d8932d8dfaf3676fdd3af108e0e9edfd Mon Sep 17 00:00:00 2001
From: Aldo Cortesi <aldo@nullcube.com>
Date: Sun, 6 Mar 2011 16:11:45 +1300
Subject: Add flow_count and active_flow_count methods to flow.State.

Use these in unit tests where sensible.
---
 libmproxy/flow.py | 28 +++++++++++++++++++---------
 test/test_flow.py | 36 ++++++++++++++++++++++--------------
 2 files changed, 41 insertions(+), 23 deletions(-)

diff --git a/libmproxy/flow.py b/libmproxy/flow.py
index 3c62169f..857c8ae4 100644
--- a/libmproxy/flow.py
+++ b/libmproxy/flow.py
@@ -164,6 +164,15 @@ class Flow:
         self.intercepting = False
         self._backup = None
 
+    @classmethod
+    def from_state(klass, state):
+        f = klass(None)
+        f.load_state(state)
+        return f
+
+    def __eq__(self, other):
+        return self.get_state() == other.get_state()
+
     def script_serialize(self):
         data = self.get_state()
         return json.dumps(data)
@@ -246,15 +255,6 @@ class Flow:
         else:
             self.error = None
 
-    @classmethod
-    def from_state(klass, state):
-        f = klass(None)
-        f.load_state(state)
-        return f
-
-    def __eq__(self, other):
-        return self.get_state() == other.get_state()
-
     def modified(self):
         # FIXME: Save a serialization in backup, compare current with
         # backup to detect if flow has _really_ been modified.
@@ -308,6 +308,16 @@ class State:
         self.limit = None
         self.intercept = None
 
+    def flow_count(self):
+        return len(self.flow_map)
+
+    def active_flow_count(self):
+        c = 0
+        for i in self.flow_list:
+            if not i.response and not i.error:
+                c += 1
+        return c
+
     def clientconnect(self, cc):
         self.client_connections.append(cc)
 
diff --git a/test/test_flow.py b/test/test_flow.py
index 6b0c7bf7..b49d9cdf 100644
--- a/test/test_flow.py
+++ b/test/test_flow.py
@@ -42,10 +42,10 @@ class uClientPlaybackState(libpry.AutoTree):
         )
         s = flow.State()
         fm = flow.FlowMaster(None, s)
-        assert not s.flow_map
+        assert not s.flow_count()
         assert c.count() == 2
         c.tick(fm, testing=True)
-        assert s.flow_map
+        assert s.flow_count()
         assert c.count() == 1
 
         c.tick(fm, testing=True)
@@ -222,21 +222,29 @@ class uState(libpry.AutoTree):
         req = tutils.treq(bc)
         f = c.add_request(req)
         assert f
-        assert len(c.flow_list) == 1
+        assert c.flow_count() == 1
         assert c.flow_map.get(req)
+        assert c.active_flow_count() == 1
 
         newreq = tutils.treq()
         assert c.add_request(newreq)
         assert c.flow_map.get(newreq)
+        assert c.active_flow_count() == 2
 
         resp = tutils.tresp(req)
         assert c.add_response(resp)
-        assert len(c.flow_list) == 2
+        assert c.flow_count() == 2
         assert c.flow_map.get(resp.request)
+        assert c.active_flow_count() == 1
 
-        newresp = tutils.tresp()
-        assert not c.add_response(newresp)
-        assert not c.flow_map.get(newresp.request)
+        unseen_resp = tutils.tresp()
+        assert not c.add_response(unseen_resp)
+        assert not c.flow_map.get(unseen_resp.request)
+        assert c.active_flow_count() == 1
+
+        resp = tutils.tresp(newreq)
+        assert c.add_response(resp)
+        assert c.active_flow_count() == 0
 
         dc = proxy.ClientDisconnect(bc)
         c.clientdisconnect(dc)
@@ -301,7 +309,7 @@ class uState(libpry.AutoTree):
         req = tutils.treq()
         f = c.add_request(req)
         c.kill_flow(f)
-        assert not c.flow_list
+        assert not c.flow_count()
 
     def test_clear(self):
         c = flow.State()
@@ -309,10 +317,10 @@ class uState(libpry.AutoTree):
         f.intercepting = True
 
         c.clear()
-        assert len(c.flow_list) == 1
+        assert c.flow_count() == 1
         f.intercepting = False
         c.clear()
-        assert len(c.flow_list) == 0
+        assert c.flow_count() == 0
 
     def test_dump_flows(self):
         c = flow.State()
@@ -361,11 +369,11 @@ class uFlowMaster(libpry.AutoTree):
         fm.handle_clientconnect(req.client_conn)
 
         f = fm.handle_request(req)
-        assert len(s.flow_list) == 1
+        assert s.flow_count() == 1
 
         resp = tutils.tresp(req)
         fm.handle_response(resp)
-        assert len(s.flow_list) == 1
+        assert s.flow_count() == 1
 
         rx = tutils.tresp()
         assert not fm.handle_response(rx)
@@ -386,9 +394,9 @@ class uFlowMaster(libpry.AutoTree):
         assert not fm.start_client_playback(pb)
 
         q = Queue.Queue()
-        assert not fm.state.flow_map
+        assert not fm.state.flow_count()
         fm.tick(q)
-        assert fm.state.flow_map
+        assert fm.state.flow_count()
 
         fm.handle_error(proxy.Error(f.request, "error"))
 
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