fix broken tests

Author: pipermerriam

populus/chain/geth.py

@@ -98,7 +98,8 @@ def get_geth_process_instance(self):
 
     def get_web3_config(self):
         web3_config = copy.deepcopy(super(BaseGethChain, self).get_web3_config())
-        web3_config['provider.settings.ipc_path'] = self.geth.ipc_path
+        if not web3_config.get('provider.settings'):
+            web3_config['provider.settings.ipc_path'] = self.geth.ipc_path
         return web3_config
 
     def __enter__(self, *args, **kwargs):

populus/chain/tester.py

@@ -12,8 +12,7 @@ def __enter__(self):
 
         self._running = True
 
-        self.provider = self.web3.currentProvider
-        self.rpc_methods = self.provider.rpc_methods
+        self.rpc_methods = self.web3.currentProvider.rpc_methods
 
         self.rpc_methods.full_reset()
         self.rpc_methods.rpc_configure('eth_mining', False)