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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using InterfaceStudy.Core;
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using Xunit;
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namespace InterfaceStudy.Test
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{
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public class ChildATest
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{
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[Fact]
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public void Test()
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{
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IBase a = new ChildA();
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var number = a.GetNumber();
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Assert.Equal(-2,number);
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}
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}
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}
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