如何动态对象传递到一个TestCase的NUnit的功能？ [英] How to pass dynamic objects into an NUnit TestCase function?

问题描述

我写一个数据密集型应用程序。我有以下的测试。他们的工作，但他们几乎是多余的。

I am writing a data-intensive app. I have the following tests. They work, but they're pretty redundant.

[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);
}

同样的属性之初修改，就像不同的容器对象的子，并在年底的说法变了几个值。我需要写的这几十个，检查不同的属性。所以我想参数测试。诀窍在于传递容器对象作为参数进行测试。该容器对象实例化的测试夹具设置

The same properties are modified at the beginning, just as children of different container objects, and a couple values in the assertion change at the end. I need to write a few dozen of these, checking different properties. So I want to parameterize the test. The trick is passing the container object as a parameter to the test. The container object is instantiated in the test fixture SetUp.

我想实现看起来像这样什么：

What I want to achieve would look something like this:

[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，这并不工作，我不知道如何使它工作，或者如果可能的话。

But that doesn't work and I'm not sure how to make it work, or if it's possible.

推荐答案

我跟踪它。我不能实例化对象传递到通过TestCase的测试，因为属性是严格的静态元数据。但是NUnit的团队为，TestCaseSource的解决方案。在回答这一问题NUnit的名单上的职位是的这里

I tracked it down. I can't pass an instantiated object into a test via TestCase because attributes are strictly for static meta-data. But the NUnit team has a solution for that, TestCaseSource. The post on the NUnit list that answered the question is here.

下面是我的解决方案，现在看起来像：

Here is what my solution now looks like:

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);
}

不像我希望的那么漂亮，不是那么容易阅读。但它没有对削减代码复制成功，这将使事情变得更容易维护和修复。

Not as pretty as I hoped, not as easy to read. But it did succeed on cutting down code duplication, which should make things easier to maintain and fix.

这篇关于如何动态对象传递到一个TestCase的NUnit的功能？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！