add basic tests

src/csharp/Grpc.Core.Tests/Internal/DefaultObjectPoolTest.cs

@@ -0,0 +1,79 @@
+#region Copyright notice and license
+
+// Copyright 2017 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 Grpc.Core;
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+using NUnit.Framework;
+
+namespace Grpc.Core.Internal.Tests
+{
+    public class DefaultObjectPoolTest
+    {
+        [Test]
+        [TestCase(10, 2)]
+        [TestCase(10, 1)]
+        [TestCase(0, 2)]
+        [TestCase(2, 0)]
+        public void ObjectIsReused(int sharedCapacity, int threadLocalCapacity)
+        {
+            var pool = new DefaultObjectPool<TestPooledObject>(() => new TestPooledObject(), sharedCapacity, threadLocalCapacity);
+            var origLeased = pool.Lease();
+            pool.Return(origLeased);
+            Assert.AreSame(origLeased, pool.Lease());
+            Assert.AreNotSame(origLeased, pool.Lease());
+        }
+
+        [Test]
+        public void ZeroCapacities()
+        {
+            var pool = new DefaultObjectPool<TestPooledObject>(() => new TestPooledObject(), 0, 0);
+            var origLeased = pool.Lease();
+            pool.Return(origLeased);
+            Assert.AreNotSame(origLeased, pool.Lease());
+        }
+
+        [Test]
+        public void DisposeCleansSharedPool()
+        {
+            var pool = new DefaultObjectPool<TestPooledObject>(() => new TestPooledObject(), 10, 0);
+            var origLeased = pool.Lease();
+            pool.Return(origLeased);
+            pool.Dispose();
+            Assert.AreNotSame(origLeased, pool.Lease());
+        }
+
+        [Test]
+        public void Constructor()
+        {
+            Assert.Throws<ArgumentNullException>(() => new DefaultObjectPool<TestPooledObject>(null, 10, 2));
+            Assert.Throws<ArgumentException>(() => new DefaultObjectPool<TestPooledObject>(() => new TestPooledObject(), -1, 10));
+            Assert.Throws<ArgumentException>(() => new DefaultObjectPool<TestPooledObject>(() => new TestPooledObject(), 10, -1));
+        }
+
+        class TestPooledObject : IDisposable
+        {
+
+            public void Dispose()
+            {
+
+            }
+        }
+    }
+}

src/csharp/tests.json

@@ -5,6 +5,7 @@
     "Grpc.Core.Internal.Tests.ChannelArgsSafeHandleTest",
     "Grpc.Core.Internal.Tests.CompletionQueueEventTest",
     "Grpc.Core.Internal.Tests.CompletionQueueSafeHandleTest",
+    "Grpc.Core.Internal.Tests.DefaultObjectPoolTest",
     "Grpc.Core.Internal.Tests.MetadataArraySafeHandleTest",
     "Grpc.Core.Internal.Tests.TimespecTest",
     "Grpc.Core.Tests.AppDomainUnloadTest",