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test_middleware_pipeline.py
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89 lines (65 loc) · 2.78 KB
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# ------------------------------------
# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
# ------------------------------------
from collections import OrderedDict
from unittest import TestCase
from msgraph.core.middleware.middleware import BaseMiddleware, MiddlewarePipeline
class MiddlewarePipelineTest(TestCase):
def test_adds_middlewares_in_order(self):
middleware_pipeline = MiddlewarePipeline()
middleware_pipeline.add_middleware(MockRequestMiddleware1())
middleware_pipeline.add_middleware(MockRequestMiddleware2())
first_middleware = middleware_pipeline._first_middleware
second_middleware = middleware_pipeline._first_middleware.next
self.assertIsInstance(first_middleware, MockRequestMiddleware1)
self.assertIsInstance(second_middleware, MockRequestMiddleware2)
def test_request_object_is_modified_in_order(self):
middleware_pipeline = MiddlewarePipeline()
middleware_pipeline.add_middleware(MockRequestMiddleware1())
middleware_pipeline.add_middleware(MockRequestMiddleware2())
request = OrderedDict()
request.headers = {}
result = middleware_pipeline.send(request)
second, _ = result.popitem()
first, _ = result.popitem()
self.assertEqual(second, 'middleware2')
self.assertEqual(first, 'middleware1')
def test_response_object_is_modified_in_reverse_order(self):
middleware_pipeline = MiddlewarePipeline()
middleware_pipeline.add_middleware(
MockResponseMiddleware1()
) # returns world as the response
middleware_pipeline.add_middleware(
MockResponseMiddleware2()
) # returns hello as the response
# Responses are passed through the list of middlewares in reverse order.
# This will return hello world
request = OrderedDict()
request.headers = {}
resp = middleware_pipeline.send(request)
self.assertEqual(resp, 'Hello World')
class MockRequestMiddleware1(BaseMiddleware):
def __init__(self):
super().__init__()
def send(self, request, **kwargs):
request['middleware1'] = 1
return super().send(request, **kwargs)
class MockRequestMiddleware2(BaseMiddleware):
def __init__(self):
super().__init__()
def send(self, request, **kwargs):
request['middleware2'] = 2
return request
class MockResponseMiddleware1(BaseMiddleware):
def __init__(self):
super().__init__()
def send(self, request, **kwargs):
resp = super().send(request, **kwargs)
resp += 'World'
return resp
class MockResponseMiddleware2(BaseMiddleware):
def __init__(self):
super().__init__()
def send(self, request, **kwargs):
return 'Hello '