401 lines
12 KiB
Python
401 lines
12 KiB
Python
import logging
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import pytest
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from bs4 import BeautifulSoup
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from sanic import Sanic
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from sanic.exceptions import (
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BadRequest,
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ContentRangeError,
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ExpectationFailed,
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Forbidden,
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HeaderExpectationFailed,
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InvalidUsage,
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MethodNotAllowed,
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MethodNotSupported,
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NotFound,
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RangeNotSatisfiable,
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SanicException,
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ServerError,
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Unauthorized,
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)
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from sanic.response import text
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def dl_to_dict(soup, dl_id):
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keys, values = [], []
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for dl in soup.find_all("dl", {"id": dl_id}):
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for dt in dl.find_all("dt"):
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keys.append(dt.text.split(":", 1)[0])
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for dd in dl.find_all("dd"):
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values.append(dd.text.strip())
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return dict(zip(keys, values))
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class SanicExceptionTestException(Exception):
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pass
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@pytest.fixture(scope="module")
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def exception_app():
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app = Sanic("test_exceptions")
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app.config.FALLBACK_ERROR_FORMAT = "html"
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@app.route("/")
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def handler(request):
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return text("OK")
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@app.route("/error")
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def handler_error(request):
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raise ServerError("OK")
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@app.route("/404")
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def handler_404(request):
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raise NotFound("OK")
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@app.route("/403")
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def handler_403(request):
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raise Forbidden("Forbidden")
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@app.route("/401")
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def handler_401(request):
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raise Unauthorized("Unauthorized")
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@app.route("/401/basic")
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def handler_401_basic(request):
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raise Unauthorized("Unauthorized", scheme="Basic", realm="Sanic")
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@app.route("/401/digest")
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def handler_401_digest(request):
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raise Unauthorized(
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"Unauthorized",
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scheme="Digest",
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realm="Sanic",
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qop="auth, auth-int",
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algorithm="MD5",
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nonce="abcdef",
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opaque="zyxwvu",
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)
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@app.route("/401/bearer")
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def handler_401_bearer(request):
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raise Unauthorized("Unauthorized", scheme="Bearer")
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@app.route("/invalid")
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def handler_invalid(request):
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raise BadRequest("OK")
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@app.route("/abort/401")
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def handler_401_error(request):
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raise SanicException(status_code=401)
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@app.route("/abort")
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def handler_500_error(request):
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raise SanicException(status_code=500)
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@app.route("/abort/message")
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def handler_abort_message(request):
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raise SanicException(message="Custom Message", status_code=500)
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@app.route("/divide_by_zero")
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def handle_unhandled_exception(request):
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_ = 1 / 0
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@app.route("/error_in_error_handler_handler")
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def custom_error_handler(request):
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raise SanicExceptionTestException("Dummy message!")
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@app.exception(SanicExceptionTestException)
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def error_in_error_handler_handler(request, exception):
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_ = 1 / 0
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return app
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def test_catch_exception_list(app):
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@app.exception([SanicExceptionTestException, NotFound])
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def exception_list(request, exception):
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return text("ok")
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@app.route("/")
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def exception(request):
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raise SanicExceptionTestException("You won't see me")
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request, response = app.test_client.get("/random")
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assert response.text == "ok"
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request, response = app.test_client.get("/")
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assert response.text == "ok"
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def test_no_exception(exception_app):
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"""Test that a route works without an exception"""
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request, response = exception_app.test_client.get("/")
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assert response.status == 200
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assert response.text == "OK"
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def test_server_error_exception(exception_app):
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"""Test the built-in ServerError exception works"""
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request, response = exception_app.test_client.get("/error")
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assert response.status == 500
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def test_invalid_usage_exception(exception_app):
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"""Test the built-in BadRequest exception works"""
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request, response = exception_app.test_client.get("/invalid")
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assert response.status == 400
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def test_not_found_exception(exception_app):
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"""Test the built-in NotFound exception works"""
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request, response = exception_app.test_client.get("/404")
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assert response.status == 404
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def test_forbidden_exception(exception_app):
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"""Test the built-in Forbidden exception"""
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request, response = exception_app.test_client.get("/403")
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assert response.status == 403
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def test_unauthorized_exception(exception_app):
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"""Test the built-in Unauthorized exception"""
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request, response = exception_app.test_client.get("/401")
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assert response.status == 401
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request, response = exception_app.test_client.get("/401/basic")
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assert response.status == 401
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assert response.headers.get("WWW-Authenticate") is not None
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assert response.headers.get("WWW-Authenticate") == 'Basic realm="Sanic"'
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request, response = exception_app.test_client.get("/401/digest")
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assert response.status == 401
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auth_header = response.headers.get("WWW-Authenticate")
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assert auth_header is not None
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assert auth_header.startswith("Digest")
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assert 'qop="auth, auth-int"' in auth_header
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assert 'algorithm="MD5"' in auth_header
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assert 'nonce="abcdef"' in auth_header
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assert 'opaque="zyxwvu"' in auth_header
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request, response = exception_app.test_client.get("/401/bearer")
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assert response.status == 401
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assert response.headers.get("WWW-Authenticate") == "Bearer"
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def test_handled_unhandled_exception(exception_app):
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"""Test that an exception not built into sanic is handled"""
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request, response = exception_app.test_client.get("/divide_by_zero")
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assert response.status == 500
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soup = BeautifulSoup(response.body, "html.parser")
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assert "Internal Server Error" in soup.h1.text
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message = " ".join(soup.p.text.split())
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assert "The application encountered an unexpected error" in message
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def test_exception_in_exception_handler(exception_app):
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"""Test that an exception thrown in an error handler is handled"""
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request, response = exception_app.test_client.get(
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"/error_in_error_handler_handler"
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)
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assert response.status == 500
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assert response.body == b"An error occurred while handling an error"
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def test_exception_in_exception_handler_debug_off(exception_app):
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"""Test that an exception thrown in an error handler is handled"""
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request, response = exception_app.test_client.get(
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"/error_in_error_handler_handler", debug=False
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)
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assert response.status == 500
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assert response.body == b"An error occurred while handling an error"
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def test_exception_in_exception_handler_debug_on(exception_app):
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"""Test that an exception thrown in an error handler is handled"""
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request, response = exception_app.test_client.get(
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"/error_in_error_handler_handler", debug=True
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)
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assert response.status == 500
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assert response.body.startswith(b"Exception raised in exception ")
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def test_sanic_exception(exception_app):
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"""Test sanic exceptions are handled"""
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request, response = exception_app.test_client.get("/abort/401")
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assert response.status == 401
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request, response = exception_app.test_client.get("/abort")
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assert response.status == 500
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# check fallback message
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assert "Internal Server Error" in response.text
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request, response = exception_app.test_client.get("/abort/message")
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assert response.status == 500
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assert "Custom Message" in response.text
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def test_custom_exception_default_message(exception_app):
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class TeaError(SanicException):
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message = "Tempest in a teapot"
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status_code = 418
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exception_app.router.reset()
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@exception_app.get("/tempest")
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def tempest(_):
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raise TeaError
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_, response = exception_app.test_client.get("/tempest", debug=True)
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assert response.status == 418
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assert b"Tempest in a teapot" in response.body
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def test_exception_in_ws_logged(caplog):
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app = Sanic("Test")
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@app.websocket("/feed")
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async def feed(request, ws):
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raise Exception("...")
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with caplog.at_level(logging.INFO):
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app.test_client.websocket("/feed")
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for record in caplog.record_tuples:
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if record[2].startswith("Exception occurred"):
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break
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assert record[0] == "sanic.error"
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assert record[1] == logging.ERROR
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assert "Exception occurred while handling uri:" in record[2]
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@pytest.mark.parametrize("debug", (True, False))
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def test_contextual_exception_context(debug):
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app = Sanic("Test")
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class TeapotError(SanicException):
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status_code = 418
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message = "Sorry, I cannot brew coffee"
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def fail():
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raise TeapotError(context={"foo": "bar"})
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app.post("/coffee/json", error_format="json", name="json")(
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lambda _: fail()
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)
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app.post("/coffee/html", error_format="html", name="html")(
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lambda _: fail()
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)
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app.post("/coffee/text", error_format="text", name="text")(
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lambda _: fail()
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)
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_, response = app.test_client.post("/coffee/json", debug=debug)
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assert response.status == 418
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assert response.json["message"] == "Sorry, I cannot brew coffee"
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assert response.json["context"] == {"foo": "bar"}
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_, response = app.test_client.post("/coffee/html", debug=debug)
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soup = BeautifulSoup(response.body, "html.parser")
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dl = dl_to_dict(soup, "exception-context")
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assert response.status == 418
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assert "Sorry, I cannot brew coffee" in soup.find("p").text
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assert dl == {"foo": "bar"}
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_, response = app.test_client.post("/coffee/text", debug=debug)
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lines = [x.decode() for x in response.body.split(b"\n")]
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idx = lines.index("Context") + 1
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assert response.status == 418
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assert lines[2] == "Sorry, I cannot brew coffee"
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assert lines[idx] == ' foo: "bar"'
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@pytest.mark.parametrize("debug", (True, False))
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def test_contextual_exception_extra(debug):
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app = Sanic("Test")
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class TeapotError(SanicException):
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status_code = 418
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@property
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def message(self):
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return f"Found {self.extra['foo']}"
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def fail():
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raise TeapotError(extra={"foo": "bar"})
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app.post("/coffee/json", error_format="json", name="json")(
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lambda _: fail()
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)
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app.post("/coffee/html", error_format="html", name="html")(
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lambda _: fail()
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)
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app.post("/coffee/text", error_format="text", name="text")(
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lambda _: fail()
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)
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_, response = app.test_client.post("/coffee/json", debug=debug)
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assert response.status == 418
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assert response.json["message"] == "Found bar"
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if debug:
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assert response.json["extra"] == {"foo": "bar"}
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else:
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assert "extra" not in response.json
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_, response = app.test_client.post("/coffee/html", debug=debug)
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soup = BeautifulSoup(response.body, "html.parser")
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dl = dl_to_dict(soup, "exception-extra")
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assert response.status == 418
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assert "Found bar" in soup.find("p").text
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if debug:
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assert dl == {"foo": "bar"}
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else:
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assert not dl
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_, response = app.test_client.post("/coffee/text", debug=debug)
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lines = [x.decode() for x in response.body.split(b"\n")]
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assert response.status == 418
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assert lines[2] == "Found bar"
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if debug:
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idx = lines.index("Extra") + 1
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assert lines[idx] == ' foo: "bar"'
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else:
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assert "Extra" not in lines
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@pytest.mark.parametrize("override", (True, False))
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def test_contextual_exception_functional_message(override):
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app = Sanic("Test")
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class TeapotError(SanicException):
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status_code = 418
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@property
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def message(self):
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return f"Received foo={self.context['foo']}"
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@app.post("/coffee", error_format="json")
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async def make_coffee(_):
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error_args = {"context": {"foo": "bar"}}
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if override:
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error_args["message"] = "override"
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raise TeapotError(**error_args)
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_, response = app.test_client.post("/coffee", debug=True)
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error_message = "override" if override else "Received foo=bar"
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assert response.status == 418
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assert response.json["message"] == error_message
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assert response.json["context"] == {"foo": "bar"}
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def test_exception_aliases():
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assert InvalidUsage is BadRequest
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assert MethodNotSupported is MethodNotAllowed
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assert ContentRangeError is RangeNotSatisfiable
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assert HeaderExpectationFailed is ExpectationFailed
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