Use factories and fixtures in pubsub tests

Done
- Add factories using factory-boy
- Modify fixtures and tests to use factories
- Modify tests to use fixtures and factories
- Clean up

tests/pubsub/factories.py

@@ -0,0 +1,55 @@
+import functools
+
+import factory
+
+from libp2p import initialize_default_swarm
+from libp2p.host.basic_host import BasicHost
+from libp2p.pubsub.floodsub import FloodSub
+from libp2p.pubsub.gossipsub import GossipSub
+from libp2p.pubsub.pubsub import Pubsub
+
+from tests.configs import LISTEN_MADDR
+
+from .configs import FLOODSUB_PROTOCOL_ID, GOSSIPSUB_PROTOCOL_ID, GOSSIPSUB_PARAMS
+
+
+def swarm_factory():
+    return initialize_default_swarm(transport_opt=[str(LISTEN_MADDR)])
+
+
+class HostFactory(factory.Factory):
+    class Meta:
+        model = BasicHost
+
+    network = factory.LazyFunction(swarm_factory)
+
+
+class FloodsubFactory(factory.Factory):
+    class Meta:
+        model = FloodSub
+
+    protocols = (FLOODSUB_PROTOCOL_ID,)
+
+
+class GossipsubFactory(factory.Factory):
+    class Meta:
+        model = GossipSub
+
+    protocols = (GOSSIPSUB_PROTOCOL_ID,)
+    degree = GOSSIPSUB_PARAMS.degree
+    degree_low = GOSSIPSUB_PARAMS.degree_low
+    degree_high = GOSSIPSUB_PARAMS.degree_high
+    time_to_live = GOSSIPSUB_PARAMS.time_to_live
+    gossip_window = GOSSIPSUB_PARAMS.gossip_window
+    gossip_history = int(GOSSIPSUB_PARAMS.gossip_history)
+    heartbeat_interval = GOSSIPSUB_PARAMS.heartbeat_interval
+
+
+class PubsubFactory(factory.Factory):
+    class Meta:
+        model = Pubsub
+
+    host = factory.SubFactory(HostFactory)
+    router = None
+    my_id = factory.LazyAttribute(lambda obj: obj.host.get_id())
+    cache_size = None