aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
blob: 02bcd18cb5573dbcc69468b637637722e3809361 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
#region Copyright notice and license

// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Grpc.Core;
using Grpc.Core.Utils;
using NUnit.Framework;

namespace Math.Tests
{
    /// <summary>
    /// Math client talks to local math server.
    /// </summary>
    public class MathClientServerTest
    {
        const string Host = "localhost";
        Server server;
        Channel channel;
        Math.MathClient client;

        [TestFixtureSetUp]
        public void Init()
        {
            // Disable SO_REUSEPORT to prevent https://github.com/grpc/grpc/issues/10755
            server = new Server(new[] { new ChannelOption(ChannelOptions.SoReuseport, 0) })
            {
                Services = { Math.BindService(new MathServiceImpl()) },
                Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
            };
            server.Start();
            channel = new Channel(Host, server.Ports.Single().BoundPort, ChannelCredentials.Insecure);
            client = new Math.MathClient(channel);
        }

        [TestFixtureTearDown]
        public void Cleanup()
        {
            channel.ShutdownAsync().Wait();
            server.ShutdownAsync().Wait();
        }

        [Test]
        public void Div1()
        {
            DivReply response = client.Div(new DivArgs { Dividend = 10, Divisor = 3 });
            Assert.AreEqual(3, response.Quotient);
            Assert.AreEqual(1, response.Remainder);
        }

        [Test]
        public void Div2()
        {
            DivReply response = client.Div(new DivArgs { Dividend = 0, Divisor = 1 });
            Assert.AreEqual(0, response.Quotient);
            Assert.AreEqual(0, response.Remainder);
        }

        [Test]
        public void DivByZero()
        {
            var ex = Assert.Throws<RpcException>(() => client.Div(new DivArgs { Dividend = 0, Divisor = 0 }));
            Assert.AreEqual(StatusCode.InvalidArgument, ex.Status.StatusCode);
        }

        [Test]
        public async Task DivAsync()
        {
            DivReply response = await client.DivAsync(new DivArgs { Dividend = 10, Divisor = 3 });
            Assert.AreEqual(3, response.Quotient);
            Assert.AreEqual(1, response.Remainder);
        }

        [Test]
        public async Task Fib()
        {
            using (var call = client.Fib(new FibArgs { Limit = 6 }))
            {
                var responses = await call.ResponseStream.ToListAsync();
                CollectionAssert.AreEqual(new List<long> { 1, 1, 2, 3, 5, 8 },
                    responses.Select((n) => n.Num_));
            }
        }

        [Test]
        public async Task FibWithCancel()
        {
            var cts = new CancellationTokenSource();

            using (var call = client.Fib(new FibArgs { Limit = 0 }, cancellationToken: cts.Token))
            {
                List<long> responses = new List<long>();

                try
                {
                    while (await call.ResponseStream.MoveNext())
                    {
                        if (responses.Count == 0)
                        {
                            cts.CancelAfter(500);  // make sure we cancel soon
                        }
                        responses.Add(call.ResponseStream.Current.Num_);
                    }
                    Assert.Fail();
                }
                catch (RpcException e)
                {
                    Assert.IsTrue(responses.Count > 0);
                    Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
                }
            }
        }

        [Test]
        public async Task FibWithDeadline()
        {
            using (var call = client.Fib(new FibArgs { Limit = 0 }, 
                deadline: DateTime.UtcNow.AddMilliseconds(500)))
            {
                var ex = Assert.ThrowsAsync<RpcException>(async () => await call.ResponseStream.ToListAsync());

                // We can't guarantee the status code always DeadlineExceeded. See issue #2685.
                Assert.Contains(ex.Status.StatusCode, new[] { StatusCode.DeadlineExceeded, StatusCode.Internal });
            }
        }

        // TODO: test Fib with limit=0 and cancellation
        [Test]
        public async Task Sum()
        {
            using (var call = client.Sum())
            {
                var numbers = new List<long> { 10, 20, 30 }.Select(n => new Num { Num_ = n });

                await call.RequestStream.WriteAllAsync(numbers);
                var result = await call.ResponseAsync;
                Assert.AreEqual(60, result.Num_);
            }
        }

        [Test]
        public async Task DivMany()
        {
            var divArgsList = new List<DivArgs>
            {
                new DivArgs { Dividend = 10, Divisor = 3 },
                new DivArgs { Dividend = 100, Divisor = 21 },
                new DivArgs { Dividend = 7, Divisor = 2 }
            };

            using (var call = client.DivMany())
            {
                await call.RequestStream.WriteAllAsync(divArgsList);
                var result = await call.ResponseStream.ToListAsync();

                CollectionAssert.AreEqual(new long[] { 3, 4, 3 }, result.Select((divReply) => divReply.Quotient));
                CollectionAssert.AreEqual(new long[] { 1, 16, 1 }, result.Select((divReply) => divReply.Remainder));
            }
        }
    }
}