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1# Copyright 2018 gRPC authors.
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14"""Tests 'utf-8' encoded error message."""
15
16import unittest
17import weakref
18
19import grpc
20
21from tests.unit import test_common
22from tests.unit.framework.common import test_constants
23
24_UNICODE_ERROR_MESSAGES = [
25    b"\xe2\x80\x9d".decode("utf-8"),
26    b"abc\x80\xd0\xaf".decode("latin-1"),
27    b"\xc3\xa9".decode("utf-8"),
28]
29
30_REQUEST = b"\x00\x00\x00"
31_RESPONSE = b"\x00\x00\x00"
32
33_UNARY_UNARY = "/test/UnaryUnary"
34
35
36class _MethodHandler(grpc.RpcMethodHandler):
37    def __init__(self, request_streaming=None, response_streaming=None):
38        self.request_streaming = request_streaming
39        self.response_streaming = response_streaming
40        self.request_deserializer = None
41        self.response_serializer = None
42        self.unary_stream = None
43        self.stream_unary = None
44        self.stream_stream = None
45
46    def unary_unary(self, request, servicer_context):
47        servicer_context.set_code(grpc.StatusCode.UNKNOWN)
48        servicer_context.set_details(request.decode("utf-8"))
49        return _RESPONSE
50
51
52class _GenericHandler(grpc.GenericRpcHandler):
53    def __init__(self, test):
54        self._test = test
55
56    def service(self, handler_call_details):
57        return _MethodHandler()
58
59
60class ErrorMessageEncodingTest(unittest.TestCase):
61    def setUp(self):
62        self._server = test_common.test_server()
63        self._server.add_generic_rpc_handlers(
64            (_GenericHandler(weakref.proxy(self)),)
65        )
66        port = self._server.add_insecure_port("[::]:0")
67        self._server.start()
68        self._channel = grpc.insecure_channel("localhost:%d" % port)
69
70    def tearDown(self):
71        self._server.stop(0)
72        self._channel.close()
73
74    def testMessageEncoding(self):
75        for message in _UNICODE_ERROR_MESSAGES:
76            multi_callable = self._channel.unary_unary(
77                _UNARY_UNARY,
78                _registered_method=True,
79            )
80            with self.assertRaises(grpc.RpcError) as cm:
81                multi_callable(message.encode("utf-8"))
82
83            self.assertEqual(cm.exception.code(), grpc.StatusCode.UNKNOWN)
84            self.assertEqual(cm.exception.details(), message)
85
86
87if __name__ == "__main__":
88    unittest.main(verbosity=2)
89