MSTEST - 异步Testinitialize保证测试失败 [英] MSTEST - async Testinitialize guarantee test fail

问题描述

只是想知道，如果有人想是这样的：

Just wondering, if anyone thought like this:

这是不正确设计有内TestInitialize异步调用，如TestInitialize有任何TestMethod的前发生的。

This is incorrect design to have async call within TestInitialize, as TestInitialize has to happen before any TestMethod.

可这是正确的做法以任何方式有异步TestInitialize呢？

Can this be correct approach in any way to have async TestInitialize as well?

    private int val = 0;

    [TestInitialize]
    public async Task  TestMehod1()
    {
        var result = await LongRunningMethod();
        val = 10;
    }

    [TestMethod]
    public void  TestMehod2()
    {
        Assert.AreEqual(10, val);
    }

任何想法？

推荐答案

也许这样做最彻底的方法是让 TestInitialize 的启动的的异步操作，因为这样的：

Probably the cleanest way to do this is to have TestInitialize start the asynchronous operation, as such:

[TestClass]
public class UnitTestAsync
{
    private Task<int> val = null;

    [TestInitialize]
    public void TestInitializeMethod()
    {
        val = TestInitializeMethodAsync();
    }

    private async Task<int> TestInitializeMethodAsync()
    {
        return await LongRunningMethod();
    }

    private async Task<int> LongRunningMethod()
    {
        await Task.Delay(20);
        return 10;
    }

    [TestMethod]
    public async Task TestMehod2()
    {
        Assert.AreEqual(10, await val);
    }
}

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