c# - xUnit中如何设置测试用例顺序

Question

我用 C# 编写了 xUnit 测试用例。那个测试类包含这么多方法。我需要按顺序运行整个测试用例。如何在 xUnit 中设置测试用例顺序？

Answer 1

在 xUnit 2.* 中，这可以使用 TestCaseOrderer 属性来指定排序策略来实现，该属性可用于引用在每个测试上注释的属性以表示顺序。

例如:

订购策略

[assembly: CollectionBehavior(DisableTestParallelization = true)] 

public class PriorityOrderer : ITestCaseOrderer
{
    public IEnumerable<TTestCase> OrderTestCases<TTestCase>(IEnumerable<TTestCase> testCases) where TTestCase : ITestCase
    {
        var sortedMethods = new SortedDictionary<int, List<TTestCase>>();

        foreach (TTestCase testCase in testCases)
        {
            int priority = 0;

            foreach (IAttributeInfo attr in testCase.TestMethod.Method.GetCustomAttributes((typeof(TestPriorityAttribute).AssemblyQualifiedName)))
                priority = attr.GetNamedArgument<int>("Priority");

            GetOrCreate(sortedMethods, priority).Add(testCase);
        }

        foreach (var list in sortedMethods.Keys.Select(priority => sortedMethods[priority]))
        {
            list.Sort((x, y) => StringComparer.OrdinalIgnoreCase.Compare(x.TestMethod.Method.Name, y.TestMethod.Method.Name));
            foreach (TTestCase testCase in list)
                yield return testCase;
        }
    }

    static TValue GetOrCreate<TKey, TValue>(IDictionary<TKey, TValue> dictionary, TKey key) where TValue : new()
    {
        TValue result;

        if (dictionary.TryGetValue(key, out result)) return result;

        result = new TValue();
        dictionary[key] = result;

        return result;
    }
}

属性

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
public class TestPriorityAttribute : Attribute
{
    public TestPriorityAttribute(int priority)
    {
        Priority = priority;
    }

    public int Priority { get; private set; }
}

测试用例

[TestCaseOrderer("FullNameOfOrderStrategyHere", "OrderStrategyAssemblyName")]
public class PriorityOrderExamples
{
    [Fact, TestPriority(5)]
    public void Test3()
    {
        // called third
    }

    [Fact, TestPriority(0)]
    public void Test2()
    {
      // called second
    }

    [Fact, TestPriority(-5)]
    public void Test1()
    {
       // called first
    }

}

xUnit 2.* 订购 sample here