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c# - 单元测试因发布配置而失败，但在调试模式下通过

问题描述

我的单元测试：

[TestMethod]
public void LogAdjustment()
{
    //arrange
    var mrNumber = 123456;
    var adjustmentAmount = 2.0f;
    var startingWeight = 13.0f;
    var expectedWeight = startingWeight + adjustmentAmount;
    var startingRecord = new MasterRecord
    {
        Number = mrNumber,
        AcceptableNetWeight = startingWeight,
        QVolume = startingWeight / 1.031f
    };
    var poolRecord = new PoolRecord { MasterNumber = mrNumber };

    var iStoreMock = new Mock<IStore>();
    iStoreMock.Setup(s => s.GetReceipt(mrNumber)).Returns(startingRecord);
    iStoreMock.Setup(s => s.GetPool(mrNumber)).Returns(poolRecord);
    iStoreMock.Setup(s => s.RecordReceipt(It.Is<MasterRecord>(r => r.AcceptableNetWeight == expectedWeight && r.QVolume == expectedWeight / 1.031f));
    iStoreMock.Setup(s => s.GetReceipt(mrNumber)).Returns(startingRecord);

    var recorder = new ReceiptRecorder(iStoreMock.Object);
    var adjustment = new Adjustment { LotId = _clearAcceptableNumber, Adjustment = adjustmentAmount };

    //act
    recorder.LogAdjustment(adjustment);

    //assert
    iStoreMock.VerifyAll();
}

上述测试在发布模式下失败并出现以下错误：

Moq.MockVerificationException：以下设置不匹配：
IStoreMock s => s.RecordReceipt(It.Is(r => r.AcceptableNetWeight == 15 && r.QVolume == 14.54898))

当我在调试模式下运行它时，这个完全相同的测试通过了。

标签： c#.netunit-testingmoq

解决方案

正如 Ken YN 所建议的，在设置中对浮点数进行四舍五入有助于在调试和发布模式下通过单元测试。

iStoreMock.Setup(s => s.RecordReceipt(
   It.Is<MasterRecord>(r => r.AcceptableNetWeight == expectedWeight 
       && Math.Round(r.QuarantineVolume, 5) == Math.Round((expectedWeight/1.031f), 5)));

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