如何在 NUnit 测试用例中传递字符串和字典? [英] How to pass string and dictionary in NUnit test cases?

问题描述

我想对我的方法进行测试，我可以传递 2 个字符串变量，但我不知道如何传递 Dictionary<,>.

I want to make test for my method and I can pass 2 string variables, but I don't know how to pass the Dictionary<,>.

看起来像这样:

[Test]
[TestCase("agr1", "askdwskdls", Dictionary<TypeMeasurement,double>)]
public void SendDataToAgregator_GoodVariables_ReturnsOn(string agrID,string devID, Dictionary<TypeMeasurement, double> measurement)
{

}

TypeMeasurement 是 enum 并且我知道这不是你传递字典的方式，但我不知道如何，所以我把它放在那里以便你知道什么我想做.

TypeMeasurement is enum and I know that this is not how you pass dictionary, but I don't know how, so I place it there so that you know what I want to do.

推荐答案

代替TestCaseAttribute，如果你有复杂的数据作为测试用例，你应该看看TestCaseSourceAttribute代码>

Instead of TestCaseAttribute, if you have complex data to use as a test case, you should look at TestCaseSourceAttribute

TestCaseSourceAttribute 用于参数化测试方法，以标识将提供所需参数的属性、方法或字段

TestCaseSourceAttribute is used on a parameterized test method to identify the property, method or field that will provide the required arguments

您可以使用以下构造函数之一:

You can use one of the following contructors:

TestCaseSourceAttribute(Type sourceType, string sourceName);
TestCaseSourceAttribute(string sourceName);

这是文档的解释:

如果指定了 sourceType，则表示提供测试用例.它必须有一个默认构造函数.

If sourceType is specified, it represents the class that provides the test cases. It must have a default constructor.

如果未指定sourceType，则包含测试方法的类用来.NUnit 将使用默认构造函数来构造它或者 - 如果提供了参数 - 适当的构造函数参数.

If sourceType is not specified, the class containing the test method is used. NUnit will construct it using either the default constructor or - if arguments are provided - the appropriate constructor for those arguments.

所以你可以像下面这样使用它:

So you can use it like below:

[Test]
[TestCaseSource(nameof(MySourceMethod))]
public void SendDataToAgregator_GoodVariables_ReturnsOn(string agrID,string devID, Dictionary<TypeMeasurement, double> measurement)
{

}

static IEnumerable<object[]> MySourceMethod()
{
    var measurement = new Dictionary<TypeMeasurement, double>();
    // Do what you want with your dictionary

    // The order of element in the object my be the same expected by your test method
    return new[] { new object[] { "agr1", "askdwskdls", measurement }, };
};

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