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.Globalization;
+using System.Linq;
+using NUnit.Framework;
+using QuantConnect.Data;
+using QuantConnect.Data.Market;
+using QuantConnect.Lean.Engine.DataFeeds;
+using QuantConnect.Lean.Engine.DataFeeds.Enumerators;
+
+namespace QuantConnect.Tests.Engine.DataFeeds.Enumerators
+{
+    [TestFixture]
+    public class RateLimitEnumeratorTests
+    {
+        [Test]
+        public void LimitsBasedOnTimeBetweenCalls()
+        {
+            var currentTime = new DateTime(2015, 10, 10, 13, 6, 0);
+            var timeProvider = new ManualTimeProvider(currentTime, TimeZones.Utc);
+            var data = Enumerable.Range(0, 100).Select(x => new Tick {Symbol = CreateSymbol(x)}).GetEnumerator();
+            var rateLimit = new RateLimitEnumerator<BaseData>(data, timeProvider, Time.OneSecond);
+
+            Assert.IsTrue(rateLimit.MoveNext());
+
+            while (rateLimit.MoveNext() && rateLimit.Current == null)
+            {
+                timeProvider.AdvanceSeconds(0.1);
+            }
+
+            var delta = (timeProvider.GetUtcNow() - currentTime).TotalSeconds;
+
+            Assert.AreEqual(1, delta);
+
+            Assert.AreEqual("1", data.Current.Symbol.Value);
+
+            rateLimit.Dispose();
+        }
+
+        private static Symbol CreateSymbol(int x)
+        {
+            return new Symbol(
+                SecurityIdentifier.GenerateBase(null, x.ToString(CultureInfo.InvariantCulture), Market.USA),
+                 x.ToString(CultureInfo.InvariantCulture));
+        }
+    }
+}