如何将dynamic对象传递给NUnit TestCase函数？

我正在编写一个数据密集型应用程序。 我有以下testing。 他们工作，但他们是相当多余的。

[Test] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_InMerchantAggregateTotals_SetsWarning() { report.Merchants[5461324658456716].AggregateTotals.ItemCount = 0; report.Merchants[5461324658456716].AggregateTotals._volume = 0; report.Merchants[5461324658456716].AggregateTotals._houseGross = 1; report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x=> x is Reports.WarningObjects.ImbalancedVariables && x.mid == 5461324658456716 && x.lineitem == "AggregateTotals").Count() > 0); } [Test] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_InAggregateTotals_SetsWarning() { report.AggregateTotals.ItemCount = 0; report.AggregateTotals._volume = 0; report.AggregateTotals._houseGross = 1; report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x=> x is Reports.WarningObjects.ImbalancedVariables && x.mid == null && x.lineitem == "AggregateTotals").Count() > 0); } [Test] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_InAggregateTotalsLineItem_SetsWarning() { report.AggregateTotals.LineItem["WirelessPerItem"].ItemCount = 0; report.AggregateTotals.LineItem["WirelessPerItem"]._volume = 0; report.AggregateTotals.LineItem["WirelessPerItem"]._houseGross = 1; report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x=> x is Reports.WarningObjects.ImbalancedVariables && x.mid == null && x.lineitem == "WirelessPerItem").Count() > 0); } 

相同的属性在开始时被修改，就像不同容器对象的子对象一样，并且断言中的一对值在最后改变。 我需要写几十个，检查不同的属性。 所以我想参数化testing。 诀窍是将容器对象作为parameter passing给testing。 容器对象在testing夹具SetUp中被实例化。

我想实现的是这样的：

 [TestCase(report.AggregateTotals.LineItem["WirelessPerItem"], 0, "WirelessPerItem")] [TestCase(report.AggregateTotals, 4268435971532164, "AggregateTotals")] [TestCase(report.Merchants[5461324658456716].AggregateTotals, 5461324658456716, "WirelessPerItem")] [TestCase(report.Merchants[4268435971532164].LineItem["EBTPerItem"], 4268435971532164, "EBTPerItem")] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_TestCase_SetsWarning(object container, long mid, string field) { container.ItemCount = 0; container._volume = 0; container._houseGross = 1; report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x=> x is Reports.WarningObjects.ImbalancedVariables && x.mid == mid && x.lineitem == field).Count() > 0); } 

但是这不起作用，我不确定如何使其工作，或者如果可能的话。

Answer 1

我追查下来 我不能通过TestCase将实例化的对象传递到testing中，因为属性是严格用于静态元数据的。 但NUnit团队为此提供了一个解决scheme，即TestCaseSource。 NUnit列表上回答问题的post就在这里 。

以下是我的解决scheme现在的样子：

 public IEnumerable<TestCaseData> CountEqualsZeroAndHouseGrossIsGreaterTestCases { get { Setup(); yield return new TestCaseData(report, report.Merchants[4268435971532164].LineItem["EBTPerItem"], 4268435971532164, "EBTPerItem").SetName("ReportMerchantsLineItem"); yield return new TestCaseData(report, report.Merchants[5461324658456716].AggregateTotals, 5461324658456716, "WirelessPerItem").SetName("ReportMerchantsAggregateTotals"); yield return new TestCaseData(report, report.AggregateTotals, null, "AggregateTotals").SetName("ReportAggregateTotals"); yield return new TestCaseData(report, report.AggregateTotals.LineItem["WirelessPerItem"], null, "WirelessPerItem").SetName("ReportAggregateTotalsLineItem"); } } [TestCaseSource("CountEqualsZeroAndHouseGrossIsGreaterTestCases")] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_TestCase_SetsWarning(Reports.ResidualsReport report, Reports.LineItemObject container, long? mid, string field) { container.ItemCount = 0; container._volume = 0; container._houseGross = 1; report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x=> x is Reports.WarningObjects.ImbalancedVariables && x.mid == mid && x.lineitem == field).Count() > 0); } 

不如我所希望的那么美，不容易阅读。 但它确实成功地减less了代码重复，这使得维护和修复更容易。

Answer 2

我传递了我有时候parsing的string，认为它读得很好，例如：

 [TestCase("15°", "-10°", 25, typeof(Degrees))] [TestCase("-10°", "15°", -25, typeof(Degrees))] [TestCase("-10°", "0°", -10, typeof(Degrees))] [TestCase("-90°", "1.5707 rad", -3.1414, typeof(Radians))] [TestCase("1.5707 rad", "-90°", 3.1414, typeof(Radians))] [TestCase("1.5707 rad", "1.5707 rad", 0, typeof(Radians))] public void SubtractionTest(string lvs, string rvs, double ev, Type et) { var lv = Angle.Parse(lvs); var rv = Angle.Parse(rvs); var diff = lv - rv; Assert.AreEqual(ev, diff.Value, 1e-3); Assert.AreEqual(et, diff.Unit.GetType()); } 

Answer 3

有一个私人的方法，基类方法或助手类为你做这个不是很容易吗？

对于我的unit testing，我需要许多模拟实体，因为它是一个非常密集的应用程序。 我创build了一个模拟存储库的结构，可以在运行中创build初始化实体，我可以将它们结合起来，在内存中构build一个具有代表性的数据库结构。

像这样的东西可以为你工作：

 // Wild guess at the class name, but you get the idea private void InitializeTotals(AggregateItem item) { item.ItemCount = 0; item._volume = 0; item._houseGross = 1; } [Test] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_InMerchantAggregateTotals_SetsWarning() { InitializeTotals(report.Merchants[5461324658456716].AggregateTotals); report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x => x is Reports.WarningObjects.ImbalancedVariables && x.mid == 5461324658456716 && x.lineitem == "AggregateTotals").Count() > 0); } [Test] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_InAggregateTotals_SetsWarning() { InitializeTotals(report.AggregateTotals); report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x => x is Reports.WarningObjects.ImbalancedVariables && x.mid == null && x.lineitem == "AggregateTotals").Count() > 0); } [Test] public void DoSanityCheck_WithCountEqualsZeroAndHouseGrossIsGreater_InAggregateTotalsLineItem_SetsWarning() { InitializeTotals(report.AggregateTotals.LineItem["WirelessPerItem"]); report.DoSanityCheck(); Assert.IsTrue(report.FishyFlag); Assert.That(report.DataWarnings.Where(x => x is Reports.WarningObjects.ImbalancedVariables && x.mid == null && x.lineitem == "WirelessPerItem").Count() > 0); }