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
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+/*
+ * 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 System.Linq;
+using NUnit.Framework;
+using QuantConnect.Data;
+using QuantConnect.Data.Market;
+using QuantConnect.Lean.Engine.DataFeeds.Enumerators;
+
+namespace QuantConnect.Tests.Engine.DataFeeds.Enumerators
+{
+    [TestFixture]
+    public class MappingEventProviderTests
+    {
+        private SubscriptionDataConfig _config;
+
+        [SetUp]
+        public void SetUp()
+        {
+            var symbol = Symbol.Create("TFCFA", SecurityType.Equity, Market.USA);
+
+            _config = new SubscriptionDataConfig(typeof(TradeBar),
+                symbol,
+                Resolution.Daily,
+                TimeZones.NewYork,
+                TimeZones.NewYork,
+                true,
+                true,
+                false);
+        }
+
+        [Test]
+        public void InitialMapping()
+        {
+            var provider = new MappingEventProvider();
+
+            Assert.AreEqual("TFCFA", _config.MappedSymbol);
+
+            provider.Initialize(_config,
+                null,
+                TestGlobals.MapFileProvider,
+                new DateTime(2006, 1, 1));
+
+            Assert.AreEqual("NWSA", _config.MappedSymbol);
+        }
+
+        [Test]
+        public void MappingEvent()
+        {
+            var provider = new MappingEventProvider();
+            provider.Initialize(_config,
+                null,
+                TestGlobals.MapFileProvider,
+                new DateTime(2006, 1, 1));
+
+            Assert.AreEqual("NWSA", _config.MappedSymbol);
+
+            var symbolEvent = (SymbolChangedEvent)provider
+                .GetEvents(new NewTradableDateEventArgs(
+                    new DateTime(2013, 6, 29),
+                    null,
+                    _config.Symbol,
+                    null)).Single();
+
+            Assert.AreEqual("FOXA", symbolEvent.NewSymbol);
+            Assert.AreEqual("NWSA", symbolEvent.OldSymbol);
+            Assert.AreEqual("FOXA", _config.MappedSymbol);
+        }
+    }
+}