Allow creating instances of ServerCallContext in tests

1 files changed, 58 insertions, 0 deletions

diff --git a/src/csharp/Grpc.Core.Testing/TestServerCallContext.cs b/src/csharp/Grpc.Core.Testing/TestServerCallContext.cs
new file mode 100644
index 0000000000..5418417d7e
--- /dev/null
+++ b/src/csharp/Grpc.Core.Testing/TestServerCallContext.cs
@@ -0,0 +1,58 @@
+#region Copyright notice and license
+
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#endregion
+
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
+
+namespace Grpc.Core.Testing
+{
+    /// <summary>
+    /// Creates test doubles for <c>ServerCallContext</c>.
+    /// </summary>
+    public static class TestServerCallContext
+    {
+        /// <summary>
+        /// Creates a test double for <c>ServerCallContext</c>. Only for testing.
+        /// Note: experimental API that can change or be removed without any prior notice.
+        /// </summary>
+        public static ServerCallContext Create(string method, string host, DateTime deadline, Metadata requestHeaders, CancellationToken cancellationToken,
+            string peer, AuthContext authContext, ContextPropagationToken contextPropagationToken,
+            Func<Metadata, Task> writeHeadersFunc, Func<WriteOptions> writeOptionsGetter, Action<WriteOptions> writeOptionsSetter)
+        {
+            return new ServerCallContext(null, method, host, deadline, requestHeaders, cancellationToken,
+                writeHeadersFunc, new WriteOptionsHolder(writeOptionsGetter, writeOptionsSetter),
+                () => peer, () => authContext, () => contextPropagationToken);
+        }
+
+        private class WriteOptionsHolder : IHasWriteOptions
+        {
+            Func<WriteOptions> writeOptionsGetter;
+            Action<WriteOptions> writeOptionsSetter;
+
+            public WriteOptionsHolder(Func<WriteOptions> writeOptionsGetter, Action<WriteOptions> writeOptionsSetter)
+            {
+                this.writeOptionsGetter = writeOptionsGetter;
+                this.writeOptionsSetter = writeOptionsSetter;
+            }
+
+            public WriteOptions WriteOptions { get => writeOptionsGetter(); set => writeOptionsSetter(value); }
+        }
+    }
+}