reorg test structure to match tox and CI jobs, drop bumpversion for bump-my-version and move config to pyproject.toml, fix docs building

tests/core/host/test_ping.py

@@ -0,0 +1,49 @@
+import secrets
+
+import pytest
+import trio
+
+from libp2p.host.ping import (
+    ID,
+    PING_LENGTH,
+)
+from libp2p.tools.factories import (
+    host_pair_factory,
+)
+
+
+@pytest.mark.trio
+async def test_ping_once(security_protocol):
+    async with host_pair_factory(security_protocol=security_protocol) as (
+        host_a,
+        host_b,
+    ):
+        stream = await host_b.new_stream(host_a.get_id(), (ID,))
+        some_ping = secrets.token_bytes(PING_LENGTH)
+        await stream.write(some_ping)
+        await trio.sleep(0.01)
+        some_pong = await stream.read(PING_LENGTH)
+        assert some_ping == some_pong
+        await stream.close()
+
+
+SOME_PING_COUNT = 3
+
+
+@pytest.mark.trio
+async def test_ping_several(security_protocol):
+    async with host_pair_factory(security_protocol=security_protocol) as (
+        host_a,
+        host_b,
+    ):
+        stream = await host_b.new_stream(host_a.get_id(), (ID,))
+        for _ in range(SOME_PING_COUNT):
+            some_ping = secrets.token_bytes(PING_LENGTH)
+            await stream.write(some_ping)
+            some_pong = await stream.read(PING_LENGTH)
+            assert some_ping == some_pong
+            # NOTE: simulate some time to sleep to mirror a real
+            # world usage where a peer sends pings on some periodic interval
+            # NOTE: this interval can be `0` for this test.
+            await trio.sleep(0)
+        await stream.close()