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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
38    def __init__(self, request_streaming=None, response_streaming=None):
39        self.request_streaming = request_streaming
40        self.response_streaming = response_streaming
41        self.request_deserializer = None
42        self.response_serializer = None
43        self.unary_stream = None
44        self.stream_unary = None
45        self.stream_stream = None
46
47    def unary_unary(self, request, servicer_context):
48        servicer_context.set_code(grpc.StatusCode.UNKNOWN)
49        servicer_context.set_details(request.decode('utf-8'))
50        return _RESPONSE
51
52
53class _GenericHandler(grpc.GenericRpcHandler):
54
55    def __init__(self, test):
56        self._test = test
57
58    def service(self, handler_call_details):
59        return _MethodHandler()
60
61
62class ErrorMessageEncodingTest(unittest.TestCase):
63
64    def setUp(self):
65        self._server = test_common.test_server()
66        self._server.add_generic_rpc_handlers(
67            (_GenericHandler(weakref.proxy(self)),))
68        port = self._server.add_insecure_port('[::]:0')
69        self._server.start()
70        self._channel = grpc.insecure_channel('localhost:%d' % port)
71
72    def tearDown(self):
73        self._server.stop(0)
74        self._channel.close()
75
76    def testMessageEncoding(self):
77        for message in _UNICODE_ERROR_MESSAGES:
78            multi_callable = self._channel.unary_unary(_UNARY_UNARY)
79            with self.assertRaises(grpc.RpcError) as cm:
80                multi_callable(message.encode('utf-8'))
81
82            self.assertEqual(cm.exception.code(), grpc.StatusCode.UNKNOWN)
83            self.assertEqual(cm.exception.details(), message)
84
85
86if __name__ == '__main__':
87    unittest.main(verbosity=2)
88