eth-gas-proxy

Middleware to selectively override EVM gas heuristics
git clone git://holbrook.no/eth-gas-proxy.git
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test_middleware.py (1522B)

      1 import json
      2 import logging
      3 
      4 import unittest
      5 
      6 from gas_proxy.web3 import GasMiddleware
      7 
      8 logging.basicConfig(level=logging.DEBUG)
      9 
     10 
     11 class Mocket:
     12 
     13 
     14     def __init__(self):
     15         self.last_id = None
     16         self.response = None
     17         self.active = True
     18 
     19 
     20     def toggle(self):
     21         self.active = not self.active
     22 
     23 
     24     def send(self, d):
     25         if not self.active:
     26             raise ConnectionError('socket deactivated')
     27         o = json.loads(d)
     28         self.last_id = o['id']
     29         r = {
     30             "jsonrpc": "2.0",
     31             "id": self.last_id,
     32             "result": "0x1324",
     33                 }
     34         self.response = json.dumps(r)
     35 
     36     def recv(self, c=0):
     37         return self.response
     38 
     39 
     40 class MiddlewareTest(unittest.TestCase):
     41 
     42 
     43     def setUp(self):
     44         self.socket = Mocket()
     45 
     46         def socket_constructor():
     47             return self.socket
     48 
     49         GasMiddleware.socket_constructor = socket_constructor
     50 
     51 
     52     def tearDown(self):
     53         pass
     54 
     55 
     56     def test_middleware(self):
     57         GasMiddleware.last_gas = "0x2a"
     58         middleware = GasMiddleware(None, None)
     59 
     60         self.socket.toggle()
     61         r = middleware.__call__("eth_gasPrice", [])
     62         self.assertEqual(r['result'], "0x2a")
     63 
     64         self.socket.toggle()
     65         r = middleware.__call__("eth_gasPrice", [])
     66         self.assertEqual(r['result'], "0x1324")
     67 
     68         self.socket.toggle()
     69         r = middleware.__call__("eth_gasPrice", [])
     70         self.assertEqual(r['result'], "0x1324")
     71 
     72 if __name__ == '__main__':
     73     unittest.main()