add simple test

tests/kademlia/test_providers.py

@@ -0,0 +1,31 @@
+import pytest
+from libp2p.kademlia.network import KademliaServer
+
+
+@pytest.mark.asyncio
+async def test_example():
+    node_a = KademliaServer()
+    await node_a.listen(5801)
+
+    node_b = KademliaServer()
+    await node_b.listen(5802)
+    await node_b.bootstrap([("127.0.0.1", 5801)])
+
+    key = "hello"
+    value = "world"
+    await node_b.set(key, value)
+    await node_b.provide("hello")
+
+    providers = await node_b.get_providers("hello")
+    # print ("providers")
+    # print (providers)
+
+    # bmuller's handle_call_response wraps
+    # every rpc call result in a list of tuples
+    # [(True, [b'\xf9\xa1\xf5\x10a\xe5\xe0F'])]
+    first_tuple = providers[0]
+    # (True, [b'\xf9\xa1\xf5\x10a\xe5\xe0F'])
+    first_providers = first_tuple[1]
+    # [b'\xf9\xa1\xf5\x10a\xe5\xe0F']
+    first_provider = first_providers[0]
+    assert node_b.node.peer_id == first_provider