wehub-resource-sync
52 lines
1.9 KiB
C#
52 lines
1.9 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;
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using System.Linq.Expressions;
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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 ExpressionBuilderTests
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{
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[Test]
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public void MakesPropertyOrFieldSelectorThatWorks()
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{
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const string DayOfYear = "DayOfYear";
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Expression<Func<DateTime, int>> expected = x => x.DayOfYear;
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var actual = ExpressionBuilder.MakePropertyOrFieldSelector<DateTime, int>(DayOfYear);
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DateTime now = DateTime.UtcNow;
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Assert.AreEqual(expected.Compile().Invoke(now), actual.Compile().Invoke(now));
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}
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[Test]
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public void NonGenericMakesPropertyOrFieldSelectorThatWorks()
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{
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const string DayOfYear = "DayOfYear";
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Expression<Func<DateTime, int>> expected = x => x.DayOfYear;
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var actual = ExpressionBuilder.MakePropertyOrFieldSelector(typeof (DateTime), DayOfYear) as Expression<Func<DateTime, int>>;
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Assert.IsNotNull(actual);
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DateTime now = DateTime.UtcNow;
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Assert.AreEqual(expected.Compile().Invoke(now), actual.Compile().Invoke(now));
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}
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}
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}
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