Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.Core.Tests/MockServiceHelper.cs

+#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.Diagnostics;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+using NUnit.Framework;
+
+namespace Grpc.Core.Tests
+{
+    /// <summary>
+    /// Allows setting up a mock service in the client-server tests easily.
+    /// </summary>
+    public class MockServiceHelper
+    {
+        public const string ServiceName = "tests.Test";
+
+        readonly string host;
+        readonly ServerServiceDefinition serviceDefinition;
+        readonly IEnumerable<ChannelOption> channelOptions;
+
+        readonly Method<string, string> unaryMethod;
+        readonly Method<string, string> clientStreamingMethod;
+        readonly Method<string, string> serverStreamingMethod;
+        readonly Method<string, string> duplexStreamingMethod;
+
+        UnaryServerMethod<string, string> unaryHandler;
+        ClientStreamingServerMethod<string, string> clientStreamingHandler;
+        ServerStreamingServerMethod<string, string> serverStreamingHandler;
+        DuplexStreamingServerMethod<string, string> duplexStreamingHandler;
+
+        Server server;
+        Channel channel;
+
+        public MockServiceHelper(string host = null, Marshaller<string> marshaller = null, IEnumerable<ChannelOption> channelOptions = null)
+        {
+            this.host = host ?? "localhost";
+            this.channelOptions = channelOptions;
+            marshaller = marshaller ?? Marshallers.StringMarshaller;
+
+            unaryMethod = new Method<string, string>(
+                MethodType.Unary,
+                ServiceName,
+                "Unary",
+                marshaller,
+                marshaller);
+
+            clientStreamingMethod = new Method<string, string>(
+                MethodType.ClientStreaming,
+                ServiceName,
+                "ClientStreaming",
+                marshaller,
+                marshaller);
+
+            serverStreamingMethod = new Method<string, string>(
+                MethodType.ServerStreaming,
+                ServiceName,
+                "ServerStreaming",
+                marshaller,
+                marshaller);
+
+            duplexStreamingMethod = new Method<string, string>(
+                MethodType.DuplexStreaming,
+                ServiceName,
+                "DuplexStreaming",
+                marshaller,
+                marshaller);
+
+            serviceDefinition = ServerServiceDefinition.CreateBuilder(ServiceName)
+                .AddMethod(unaryMethod, (request, context) => unaryHandler(request, context))
+                .AddMethod(clientStreamingMethod, (requestStream, context) => clientStreamingHandler(requestStream, context))
+                .AddMethod(serverStreamingMethod, (request, responseStream, context) => serverStreamingHandler(request, responseStream, context))
+                .AddMethod(duplexStreamingMethod, (requestStream, responseStream, context) => duplexStreamingHandler(requestStream, responseStream, context))
+                .Build();
+
+            var defaultStatus = new Status(StatusCode.Unknown, "Default mock implementation. Please provide your own.");
+
+            unaryHandler = new UnaryServerMethod<string, string>(async (request, context) =>
+            {
+                context.Status = defaultStatus;
+                return "";
+            });
+
+            clientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
+            {
+                context.Status = defaultStatus;
+                return "";
+            });
+
+            serverStreamingHandler = new ServerStreamingServerMethod<string, string>(async (request, responseStream, context) =>
+            {
+                context.Status = defaultStatus;
+            });
+
+            duplexStreamingHandler = new DuplexStreamingServerMethod<string, string>(async (requestStream, responseStream, context) =>
+            {
+                context.Status = defaultStatus;
+            });
+        }
+
+        /// <summary>
+        /// Returns the default server for this service and creates one if not yet created.
+        /// </summary>
+        public Server GetServer()
+        {
+            if (server == null)
+            {
+                server = new Server
+                {
+                    Services = { serviceDefinition },
+                    Ports = { { Host, ServerPort.PickUnused, ServerCredentials.Insecure } }
+                };
+            }
+            return server;
+        }
+
+        /// <summary>
+        /// Returns the default channel for this service and creates one if not yet created.
+        /// </summary>
+        public Channel GetChannel()
+        {
+            if (channel == null)
+            {
+                channel = new Channel(Host, GetServer().Ports.Single().BoundPort, ChannelCredentials.Insecure, channelOptions);
+            }
+            return channel;
+        }
+
+        public CallInvocationDetails<string, string> CreateUnaryCall(CallOptions options = default(CallOptions))
+        {
+            return new CallInvocationDetails<string, string>(channel, unaryMethod, options);
+        }
+
+        public CallInvocationDetails<string, string> CreateClientStreamingCall(CallOptions options = default(CallOptions))
+        {
+            return new CallInvocationDetails<string, string>(channel, clientStreamingMethod, options);
+        }
+
+        public CallInvocationDetails<string, string> CreateServerStreamingCall(CallOptions options = default(CallOptions))
+        {
+            return new CallInvocationDetails<string, string>(channel, serverStreamingMethod, options);
+        }
+
+        public CallInvocationDetails<string, string> CreateDuplexStreamingCall(CallOptions options = default(CallOptions))
+        {
+            return new CallInvocationDetails<string, string>(channel, duplexStreamingMethod, options);
+        }
+
+        public string Host
+        {
+            get
+            {
+                return this.host;
+            }
+        }
+
+        public ServerServiceDefinition ServiceDefinition
+        {
+            get
+            {
+                return this.serviceDefinition;
+            }
+        }
+      
+        public UnaryServerMethod<string, string> UnaryHandler
+        {
+            get
+            {
+                return this.unaryHandler;
+            }
+
+            set
+            {
+                unaryHandler = value;
+            }
+        }
+
+        public ClientStreamingServerMethod<string, string> ClientStreamingHandler
+        {
+            get
+            {
+                return this.clientStreamingHandler;
+            }
+
+            set
+            {
+                clientStreamingHandler = value;
+            }
+        }
+
+        public ServerStreamingServerMethod<string, string> ServerStreamingHandler
+        {
+            get
+            {
+                return this.serverStreamingHandler;
+            }
+
+            set
+            {
+                serverStreamingHandler = value;
+            }
+        }
+
+        public DuplexStreamingServerMethod<string, string> DuplexStreamingHandler
+        {
+            get
+            {
+                return this.duplexStreamingHandler;
+            }
+
+            set
+            {
+                duplexStreamingHandler = value;
+            }
+        }
+    }
+}