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 +1,60 @@
+/*
+ * 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.Indicators;
+
+namespace QuantConnect.Tests.Indicators
+{
+    [TestFixture]
+    public class FunctionalIndicatorTests
+    {
+        [Test]
+        public void ComputesDelegateCorrectly()
+        {
+            var func = new FunctionalIndicator<IndicatorDataPoint>("f", data => data.Value, @this => @this.Samples > 1, () => {/*no reset action required*/});
+            func.Update(DateTime.Today, 1m);
+            Assert.IsFalse(func.IsReady);
+            Assert.AreEqual(1m, func.Current.Value);
+
+            func.Update(DateTime.Today.AddSeconds(1), 2m);
+            Assert.IsTrue(func.IsReady);
+            Assert.AreEqual(2m, func.Current.Value);
+        }
+
+        [Test]
+        public void ResetsProperly()
+        {
+            var inner = new SimpleMovingAverage(2);
+            var func = new FunctionalIndicator<IndicatorDataPoint>("f", data =>
+            {
+                inner.Update(data);
+                return inner.Current.Value*2;
+            },
+            @this => inner.IsReady,
+            () => inner.Reset()
+            );
+
+            func.Update(DateTime.Today, 1m);
+            func.Update(DateTime.Today.AddSeconds(1), 2m);
+            Assert.IsTrue(func.IsReady);
+
+            func.Reset();
+            TestHelper.AssertIndicatorIsInDefaultState(inner);
+            TestHelper.AssertIndicatorIsInDefaultState(func);
+        }
+    }
+}