FileShareDataBus acceptance and unit tests for multi environments

src/NServiceBus.AcceptanceTests/DataBus/When_sending_databus_properties_from_different_environments.cs

@@ -0,0 +1,154 @@
+namespace NServiceBus.AcceptanceTests.DataBus
+{
+    using System;
+    using System.IO;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using AcceptanceTesting;
+    using AcceptanceTesting.Customization;
+    using EndpointTemplates;
+    using MessageMutator;
+    using NUnit.Framework;
+
+    public class When_sending_databus_properties_from_different_environments : NServiceBusAcceptanceTest
+    {
+        [Test]
+        public async Task Should_receive_messages_with_largepayload_correctly_from_windows()
+        {
+            var payloadToSend = new byte[PayloadSize];
+
+            var context = await Scenario.Define<Context>()
+                .WithEndpoint<WindowsSender>(b => b.When(session => session.Send(new MyMessageWithLargePayload
+                {
+                    Payload = new DataBusProperty<byte[]>(payloadToSend)
+                })))
+                .WithEndpoint<Receiver>()
+                .Done(c => c.ReceivedPayload != null)
+                .Run();
+
+            Assert.AreEqual(payloadToSend, context.ReceivedPayload, "The large payload should be marshalled correctly using the databus");
+        }
+
+        [Test]
+        public async Task Should_receive_messages_with_largepayload_correctly_from_linux()
+        {
+            var payloadToSend = new byte[PayloadSize];
+
+            var context = await Scenario.Define<Context>()
+                .WithEndpoint<LinuxSender>(b => b.When(session => session.Send(new MyMessageWithLargePayload
+                {
+                    Payload = new DataBusProperty<byte[]>(payloadToSend)
+                })))
+                .WithEndpoint<Receiver>()
+                .Done(c => c.ReceivedPayload != null)
+                .Run();
+
+            Assert.AreEqual(payloadToSend, context.ReceivedPayload, "The large payload should be marshalled correctly using the databus");
+        }
+
+        const int PayloadSize = 500;
+
+        public class Context : ScenarioContext
+        {
+            public byte[] ReceivedPayload { get; set; }
+        }
+
+        public class WindowsSender : EndpointConfigurationBuilder
+        {
+            public WindowsSender()
+            {
+                EndpointSetup<DefaultServer>(builder =>
+                {
+                    var basePath = Path.Combine(TestContext.CurrentContext.TestDirectory, "databus", "sender");
+                    builder.UseDataBus<FileShareDataBus, SystemJsonDataBusSerializer>().BasePath(basePath);
+                    builder.UseSerialization<SystemJsonSerializer>();
+                    builder.ConfigureRouting().RouteToEndpoint(typeof(MyMessageWithLargePayload), typeof(Receiver));
+                    builder.RegisterMessageMutator(new MutateOutgoingForWindows());
+                });
+            }
+
+            public class MutateOutgoingForWindows : IMutateOutgoingTransportMessages
+            {
+                public Task MutateOutgoing(MutateOutgoingTransportMessageContext context)
+                {
+                    var databusHeaderKey = context.OutgoingHeaders.FirstOrDefault(f => f.Key.StartsWith("NServiceBus.DataBus.", StringComparison.OrdinalIgnoreCase)).Key;
+                    context.OutgoingHeaders[databusHeaderKey] = context.OutgoingHeaders[databusHeaderKey].Replace("/", "\\");
+                    return Task.CompletedTask;
+                }
+            }
+        }
+
+
+        public class LinuxSender : EndpointConfigurationBuilder
+        {
+            public LinuxSender()
+            {
+                EndpointSetup<DefaultServer>(builder =>
+                {
+                    var basePath = Path.Combine(TestContext.CurrentContext.TestDirectory, "databus", "sender");
+                    builder.UseDataBus<FileShareDataBus, SystemJsonDataBusSerializer>().BasePath(basePath);
+                    builder.UseSerialization<SystemJsonSerializer>();
+                    builder.ConfigureRouting().RouteToEndpoint(typeof(MyMessageWithLargePayload), typeof(Receiver));
+                    builder.RegisterMessageMutator(new MutateOutgoingForLinux());
+                });
+            }
+
+            public class MutateOutgoingForLinux : IMutateOutgoingTransportMessages
+            {
+                public Task MutateOutgoing(MutateOutgoingTransportMessageContext context)
+                {
+                    var databusHeaderKey = context.OutgoingHeaders.FirstOrDefault(f => f.Key.StartsWith("NServiceBus.DataBus.", StringComparison.OrdinalIgnoreCase)).Key;
+                    context.OutgoingHeaders[databusHeaderKey] = context.OutgoingHeaders[databusHeaderKey].Replace("\\", "/");
+                    return Task.CompletedTask;
+                }
+            }
+        }
+
+        public class Receiver : EndpointConfigurationBuilder
+        {
+            public Receiver()
+            {
+                EndpointSetup<DefaultServer>(builder =>
+                {
+                    var basePath = Path.Combine(TestContext.CurrentContext.TestDirectory, "databus", "sender");
+                    builder.UseDataBus<FileShareDataBus, SystemJsonDataBusSerializer>().BasePath(basePath);
+                    builder.UseSerialization<SystemJsonSerializer>();
+                    builder.RegisterMessageMutator(new Mutator());
+                });
+            }
+
+            public class MyMessageHandler : IHandleMessages<MyMessageWithLargePayload>
+            {
+                public MyMessageHandler(Context context)
+                {
+                    testContext = context;
+                }
+
+                public Task Handle(MyMessageWithLargePayload messageWithLargePayload, IMessageHandlerContext context)
+                {
+                    testContext.ReceivedPayload = messageWithLargePayload.Payload.Value;
+
+                    return Task.CompletedTask;
+                }
+
+                Context testContext;
+            }
+            public class Mutator : IMutateIncomingTransportMessages
+            {
+                public Task MutateIncoming(MutateIncomingTransportMessageContext context)
+                {
+                    if (context.Body.Length > PayloadSize)
+                    {
+                        throw new Exception("The message body is too large, which means the DataBus was not used to transfer the payload.");
+                    }
+                    return Task.CompletedTask;
+                }
+            }
+        }
+
+        public class MyMessageWithLargePayload : ICommand
+        {
+            public DataBusProperty<byte[]> Payload { get; set; }
+        }
+    }
+}

src/NServiceBus.Core.Tests/DataBus/FileShare/AcceptanceTests.cs

@@ -58,6 +58,20 @@ public async Task Should_handle_be_able_to_read_stored_values_concurrently()
             });
         }
 
+        [TestCase('/')]
+        [TestCase('\\')]
+        public async Task Should_handle_be_able_to_read_stored_values_when_received_from_different_environments(char pathSeparator)
+        {
+            const string content = "Test";
+
+            var key = await Put(content, TimeSpan.MaxValue);
+            using (var stream = await dataBus.Get(key.Replace(Path.DirectorySeparatorChar, pathSeparator)))
+            using (var streamReader = new StreamReader(stream))
+            {
+                Assert.AreEqual(await streamReader.ReadToEndAsync(), content);
+            }
+        }
+
         [Test]
         public async Task Should_handle_max_ttl()
         {