128 lines
3.9 KiB
Markdown
128 lines
3.9 KiB
Markdown
# Testing
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Sanic endpoints can be tested locally using the `test_client` object, which
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depends on the additional [aiohttp](https://aiohttp.readthedocs.io/en/stable/)
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library.
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The `test_client` exposes `get`, `post`, `put`, `delete`, `patch`, `head` and `options` methods
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for you to run against your application. A simple example (using pytest) is like follows:
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```python
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# Import the Sanic app, usually created with Sanic(__name__)
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from external_server import app
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def test_index_returns_200():
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request, response = app.test_client.get('/')
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assert response.status == 200
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def test_index_put_not_allowed():
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request, response = app.test_client.put('/')
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assert response.status == 405
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```
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Internally, each time you call one of the `test_client` methods, the Sanic app is run at `127.0.0.1:42101` and
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your test request is executed against your application, using `aiohttp`.
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The `test_client` methods accept the following arguments and keyword arguments:
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- `uri` *(default `'/'`)* A string representing the URI to test.
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- `gather_request` *(default `True`)* A boolean which determines whether the
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original request will be returned by the function. If set to `True`, the
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return value is a tuple of `(request, response)`, if `False` only the
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response is returned.
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- `server_kwargs` *(default `{}`) a dict of additional arguments to pass into `app.run` before the test request is run.
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- `debug` *(default `False`)* A boolean which determines whether to run the server in debug mode.
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The function further takes the `*request_args` and `**request_kwargs`, which are passed directly to the aiohttp ClientSession request.
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For example, to supply data to a GET request, you would do the following:
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```python
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def test_get_request_includes_data():
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params = {'key1': 'value1', 'key2': 'value2'}
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request, response = app.test_client.get('/', params=params)
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assert request.args.get('key1') == 'value1'
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```
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And to supply data to a JSON POST request:
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```python
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def test_post_json_request_includes_data():
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data = {'key1': 'value1', 'key2': 'value2'}
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request, response = app.test_client.post('/', data=json.dumps(data))
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assert request.json.get('key1') == 'value1'
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```
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More information about
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the available arguments to aiohttp can be found
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[in the documentation for ClientSession](https://aiohttp.readthedocs.io/en/stable/client_reference.html#client-session).
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## pytest-sanic
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[pytest-sanic](https://github.com/yunstanford/pytest-sanic) is a pytest plugin, it helps you to test your code asynchronously.
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Just write tests like,
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```python
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async def test_sanic_db_find_by_id(app):
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"""
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Let's assume that, in db we have,
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{
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"id": "123",
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"name": "Kobe Bryant",
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"team": "Lakers",
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}
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"""
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doc = await app.db["players"].find_by_id("123")
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assert doc.name == "Kobe Bryant"
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assert doc.team == "Lakers"
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```
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[pytest-sanic](https://github.com/yunstanford/pytest-sanic) also provides some useful fixtures, like loop, unused_port,
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test_server, test_client.
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```python
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@pytest.yield_fixture
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def app():
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app = Sanic("test_sanic_app")
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@app.route("/test_get", methods=['GET'])
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async def test_get(request):
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return response.json({"GET": True})
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@app.route("/test_post", methods=['POST'])
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async def test_post(request):
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return response.json({"POST": True})
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yield app
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@pytest.fixture
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def test_cli(loop, app, test_client):
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return loop.run_until_complete(test_client(app, protocol=WebSocketProtocol))
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#########
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# Tests #
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#########
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async def test_fixture_test_client_get(test_cli):
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"""
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GET request
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"""
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resp = await test_cli.get('/test_get')
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assert resp.status == 200
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resp_json = await resp.json()
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assert resp_json == {"GET": True}
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async def test_fixture_test_client_post(test_cli):
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"""
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POST request
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"""
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resp = await test_cli.post('/test_post')
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assert resp.status == 200
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resp_json = await resp.json()
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assert resp_json == {"POST": True}
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```
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