chore: import upstream snapshot with attribution

2026-07-13 13:02:50 +08:00
commit 0fc60fdcb1
5008 changed files with 910633 additions and 0 deletions
@@ -0,0 +1,93 @@
+/*
+ * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
+ * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
+ *
+ * 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.
+*/
+
+using System;
+using NUnit.Framework;
+using QuantConnect.Util;
+
+namespace QuantConnect.Tests.Common.Util
+{
+    [TestFixture]
+    public class DisposableExtensionsTests
+    {
+        #pragma warning disable CA2000
+        [Test]
+        public void ReturnsFalseForNullDisposable()
+        {
+            IDisposable disposable = null;
+            var result = disposable.DisposeSafely();
+            Assert.IsFalse(result);
+        }
+
+        [Test]
+        public void ReturnsTrueOnSuccessfulDisposal()
+        {
+            var disposable = new Disposable();
+            var result = disposable.DisposeSafely();
+            Assert.IsTrue(result);
+            Assert.IsTrue(disposable.DisposeWasCalled);
+        }
+
+        [Test]
+        public void InvokesErrorHandlerOnExceptionDuringDispose()
+        {
+            var errorHandlerWasInvoked = false;
+            var disposable = new Disposable(throwException: true);
+            var result = disposable.DisposeSafely(error => errorHandlerWasInvoked = true);
+            Assert.IsFalse(result);
+            Assert.IsTrue(errorHandlerWasInvoked);
+            Assert.IsTrue(disposable.DisposeWasCalled);
+        }
+
+        [Test]
+        public void SwallowsObjectDisposedException()
+        {
+            var errorHandlerWasInvoked = false;
+            var disposable = new Disposable();
+            disposable.Dispose();
+            Assert.IsTrue(disposable.DisposeWasCalled);
+
+            var result = disposable.DisposeSafely(error => errorHandlerWasInvoked = true);
+            Assert.IsTrue(result);
+            Assert.IsFalse(errorHandlerWasInvoked);
+        }
+
+        private sealed class Disposable : IDisposable
+        {
+            private readonly bool _throwException;
+            public bool DisposeWasCalled { get; private set; }
+
+            public Disposable(bool throwException = false)
+            {
+                _throwException = throwException;
+            }
+
+            public void Dispose()
+            {
+                if (DisposeWasCalled)
+                {
+                    throw new ObjectDisposedException(GetType().FullName);
+                }
+
+                DisposeWasCalled = true;
+
+                if (_throwException)
+                {
+                    throw new RegressionTestException();
+                }
+            }
+        }
+    }
+}