Merge pull request #1 from boukeversteegh/client-streaming-tests

Client streaming tests

betterproto/tests/grpc/test_stream_stream.py

@@ -0,0 +1,100 @@
+import asyncio
+import betterproto
+from betterproto.grpc.util.async_channel import AsyncChannel
+from dataclasses import dataclass
+import pytest
+from typing import AsyncIterator
+
+
+@dataclass
+class Message(betterproto.Message):
+    body: str = betterproto.string_field(1)
+
+
+@pytest.fixture
+def expected_responses():
+    return [Message("Hello world 1"), Message("Hello world 2"), Message("Done")]
+
+
+class ClientStub:
+    async def connect(self, requests: AsyncIterator):
+        await asyncio.sleep(0.1)
+        async for request in requests:
+            await asyncio.sleep(0.1)
+            yield request
+        await asyncio.sleep(0.1)
+        yield Message("Done")
+
+
+async def to_list(generator: AsyncIterator):
+    result = []
+    async for value in generator:
+        result.append(value)
+    return result
+
+
+@pytest.fixture
+def client():
+    # channel = Channel(host='127.0.0.1', port=50051)
+    # return ClientStub(channel)
+    return ClientStub()
+
+
+@pytest.mark.asyncio
+async def test_send_from_before_connect_and_close_automatically(
+    client, expected_responses
+):
+    requests = AsyncChannel()
+    await requests.send_from(
+        [Message(body="Hello world 1"), Message(body="Hello world 2")], close=True
+    )
+    responses = client.connect(requests)
+
+    assert await to_list(responses) == expected_responses
+
+
+@pytest.mark.asyncio
+async def test_send_from_after_connect_and_close_automatically(
+    client, expected_responses
+):
+    requests = AsyncChannel()
+    responses = client.connect(requests)
+    await requests.send_from(
+        [Message(body="Hello world 1"), Message(body="Hello world 2")], close=True
+    )
+
+    assert await to_list(responses) == expected_responses
+
+
+@pytest.mark.asyncio
+async def test_send_from_close_manually_immediately(client, expected_responses):
+    requests = AsyncChannel()
+    responses = client.connect(requests)
+    await requests.send_from(
+        [Message(body="Hello world 1"), Message(body="Hello world 2")], close=False
+    )
+    requests.close()
+
+    assert await to_list(responses) == expected_responses
+
+
+@pytest.mark.asyncio
+async def test_send_individually_and_close_before_connect(client, expected_responses):
+    requests = AsyncChannel()
+    await requests.send(Message(body="Hello world 1"))
+    await requests.send(Message(body="Hello world 2"))
+    requests.close()
+    responses = client.connect(requests)
+
+    assert await to_list(responses) == expected_responses
+
+
+@pytest.mark.asyncio
+async def test_send_individually_and_close_after_connect(client, expected_responses):
+    requests = AsyncChannel()
+    await requests.send(Message(body="Hello world 1"))
+    await requests.send(Message(body="Hello world 2"))
+    responses = client.connect(requests)
+    requests.close()
+
+    assert await to_list(responses) == expected_responses