wehub-resource-sync
66 lines
2.1 KiB
C#
66 lines
2.1 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System.Collections.Generic;
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using NUnit.Framework;
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using QuantConnect.Util;
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namespace QuantConnect.Tests.Common.Util
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{
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[TestFixture]
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public class CastingEnumerableTests
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{
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private class BaseClass { }
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private class DerivedClass : BaseClass { }
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[Test]
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public void CastsOnEnumeration()
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{
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var list = new List<BaseClass> { new DerivedClass(), new DerivedClass(), new DerivedClass() };
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var casting = new CastingEnumerable<BaseClass, DerivedClass>(list);
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Assert.DoesNotThrow(() =>
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{
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foreach (var item in casting) { }
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});
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CollectionAssert.AreEqual(list, casting);
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Assert.AreEqual(list.Count, casting.Count);
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}
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[Test]
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public void CastsOnIndexing()
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{
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var list = new List<BaseClass> { new DerivedClass(), new DerivedClass(), new DerivedClass() };
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var casting = new CastingEnumerable<BaseClass, DerivedClass>(list);
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DerivedClass casted0 = null;
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DerivedClass casted1 = null;
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DerivedClass casted2 = null;
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Assert.DoesNotThrow(() =>
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{
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casted0 = casting[0];
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casted1 = casting[1];
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casted2 = casting[2];
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});
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Assert.AreEqual(list[0], casted0);
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Assert.AreEqual(list[1], casted1);
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Assert.AreEqual(list[2], casted2);
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}
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}
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}
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