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diff --git a/src/csharp/Grpc.Reflection.Tests/SymbolRegistryTest.cs b/src/csharp/Grpc.Reflection.Tests/SymbolRegistryTest.cs
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+++ b/src/csharp/Grpc.Reflection.Tests/SymbolRegistryTest.cs
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+#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 Grpc.Reflection;
+using Grpc.Reflection.V1Alpha;
+using NUnit.Framework;
+
+
+namespace Grpc.Reflection.Tests
+{
+    /// <summary>
+    /// Tests for ReflectionServiceImpl
+    /// </summary>
+    public class SymbolRegistryTest
+    {
+        SymbolRegistry registry = SymbolRegistry.FromFiles(new[] { ReflectionReflection.Descriptor, Google.Protobuf.WellKnownTypes.Duration.Descriptor.File });
+
+        [Test]
+        public void FileByName()
+        {
+            Assert.AreSame(Google.Protobuf.WellKnownTypes.Duration.Descriptor.File, registry.FileByName("google/protobuf/duration.proto"));
+            Assert.IsNull(registry.FileByName("somepackage/nonexistent.proto"));
+        }
+
+        [Test]
+        public void FileContainingSymbol()
+        {
+            Assert.AreSame(Google.Protobuf.WellKnownTypes.Duration.Descriptor.File, registry.FileContainingSymbol("google.protobuf.Duration"));
+            Assert.AreSame(ReflectionReflection.Descriptor, registry.FileContainingSymbol("grpc.reflection.v1alpha.ServerReflection.ServerReflectionInfo"));  // method
+            Assert.AreSame(ReflectionReflection.Descriptor, registry.FileContainingSymbol("grpc.reflection.v1alpha.ServerReflection"));  // service
+            Assert.AreSame(ReflectionReflection.Descriptor, registry.FileContainingSymbol("grpc.reflection.v1alpha.ServerReflectionRequest"));  // message
+            Assert.IsNull(registry.FileContainingSymbol("somepackage.Nonexistent"));
+        }
+    }
+}