Azure Functions 单元测试错误 (TimerTrigger.HttpFunction)

Question

我目前正在按照本指南 (https://docs.microsoft.com/en-us/azure/azure-functions/functions-test-a-function) 向我的 Azure Functions 应用程序添加测试。

目前我已经构建了 8 个运行良好的 Azure Functions，我还添加了一个 Functions.Tests 项目并在其中引用了 Azure Functions 项目。

这是 Functions.Tests 当前的样子。

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Xunit;

namespace Functions.Tests
{
public class FunctionsTests
{
    private readonly ILogger logger = TestFactory.CreateLogger();

    [Fact]
    public async void Http_trigger_should_return_known_string()
    {
        var request = TestFactory.CreateHttpRequest("name", "Bill");
        var response = (OkObjectResult)await HttpFunction.Run(request, logger);
        Assert.Equal("Hello, Bill", response.Value);
    }

    [Theory]
    [MemberData(nameof(TestFactory.Data), MemberType = typeof(TestFactory))]
    public async void Http_trigger_should_return_known_string_from_member_data(string queryStringKey, string queryStringValue)
    {
        var request = TestFactory.CreateHttpRequest(queryStringKey, queryStringValue);
        var response = (OkObjectResult)await HttpFunction.Run(request, logger);
        Assert.Equal($"Hello, {queryStringValue}", response.Value);
    }

    [Fact]
    public void Timer_should_log_message()
    {
        var logger = (ListLogger)TestFactory.CreateLogger(LoggerTypes.List);
        TimerTrigger.Run(null, logger);
        var msg = logger.Logs[0];
        Assert.Contains("C# Timer trigger function executed at", msg);
    }
}
}

但是我在 FunctionsTests.cs 中收到以下错误

我已经尝试了 Visual Studio 中的所有建议修复程序并在线检查了资源，但没有运气。也许我缺少参考？我不确定，因为我已经逐字逐句地遵循了指南。

使用的示例 Azure 函数：

using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;

namespace Exemplar
{
public static class getCase
{
    [FunctionName("getCase")]
    public static async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Function, "get", Route = "v1/case/caseId")] HttpRequest req,
        ILogger log)
    {
        log.LogInformation("C# HTTP trigger function processed a request.");

        string name = req.Query["name"];

        string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
        dynamic data = JsonConvert.DeserializeObject(requestBody);
        name = name ?? data?.name;

        return name != null
            ? (ActionResult)new OkObjectResult($"Hello, {name}")
            : new BadRequestObjectResult("Please pass a name on the query string or in the request body");
    }
}

}

Answer 1

假设引用了包含该功能的提供的项目，则测试只需按照链接示例所示安排和执行目标功能

[Fact]
public async Task getCase_should_return_known_string()
{
    var request = TestFactory.CreateHttpRequest("name", "Bill");
    var response = (OkObjectResult)await getCase.Run(request, logger);
    Assert.Equal("Hello, Bill", response.Value);
}

[Theory]
[MemberData(nameof(TestFactory.Data), MemberType = typeof(TestFactory))]
public async Task getCase_should_return_known_string_from_member_data(string queryStringKey, string queryStringValue)
{
    var request = TestFactory.CreateHttpRequest(queryStringKey, queryStringValue);
    var response = (OkObjectResult)await getCase.Run(request, logger);
    Assert.Equal($"Hello, {queryStringValue}", response.Value);
}

同时避免使用async void。重构这些测试以改用async Task。

Answer 2

在我看来，它缺少对您的 azure functios 项目的引用，请确保您已通过以下方式添加了引用：

• 右键单击您的测试项目
• 选择菜单添加
• 选择参考
• 选择项目选项卡（左侧菜单），然后选中函数项目的复选框
• 点击确定