Adds basic functionality for both zmq_pub and bitcoin_rpc simulators

tests/zmq_pub_sim.py

@@ -0,0 +1,25 @@
+import zmq
+import time
+from binascii import unhexlify
+from pisa.conf import FEED_PROTOCOL, FEED_ADDR, FEED_PORT
+
+
+class ZMQServerSimulator:
+    def __init__(self, topic=b'hashblock'):
+        self.topic = topic
+        self.context = zmq.Context()
+        self.socket = self.context.socket(zmq.PUB)
+        self.socket.bind("%s://%s:%s" % (FEED_PROTOCOL, FEED_ADDR, FEED_PORT))
+
+    def mine_block(self, block_hash):
+        self.socket.send_multipart([self.topic, block_hash])
+        time.sleep(1)
+
+
+if __name__ == '__main__':
+    simulator = ZMQServerSimulator()
+
+    block_hash = unhexlify('0000000000000000000873e8ebc0bb1e61e560a773ec2319457b71f1b4030be0')
+
+    while True:
+        simulator.mine_block(block_hash)