sanic/tests/test_dynamic_routes.py

from sanic.response import text
from sanic.router import RouteExists
import pytest


@pytest.mark.parametrize("method,attr, expected", [
    ("get", "text", "OK1 test"),
    ("post", "text", "OK2 test"),
    ("put", "text", "OK2 test"),
    ("delete", "status", 405),
])
def test_overload_dynamic_routes(app, method, attr, expected):

    @app.route('/overload/<param>', methods=['GET'])
    async def handler1(request, param):
        return text('OK1 ' + param)

    @app.route('/overload/<param>', methods=['POST', 'PUT'])
    async def handler2(request, param):
        return text('OK2 ' + param)

    request, response = getattr(app.test_client, method)('/overload/test')
    assert getattr(response, attr) == expected


def test_overload_dynamic_routes_exist(app):

    @app.route('/overload/<param>', methods=['GET'])
    async def handler1(request, param):
        return text('OK1 ' + param)

    @app.route('/overload/<param>', methods=['POST', 'PUT'])
    async def handler2(request, param):
        return text('OK2 ' + param)

    # if this doesn't raise an error, than at least the below should happen:
    # assert response.text == 'Duplicated'
    with pytest.raises(RouteExists):
        @app.route('/overload/<param>', methods=['PUT', 'DELETE'])
        async def handler3(request):
            return text('Duplicated')