C#，如何模拟 Azure 订阅 - 列出位置

Question

我需要用模拟来实现方法来获取物理区域 Azure Subscriptions - List Locations ,不确定它应该是什么样子

public async Task<IEnumerable<Region>> GetPhysicalRegions(CancellationToken token = default(CancellationToken)){}

Answer 1

您使用本页定义的 IHttpClientFactory 实现 HttpClient，选择最适合您的解决方案: https://learn.microsoft.com/en-us/aspnet/core/fundamentals/http-requests?view=aspnetcore-6.0

然后，如果您实现一个接口(interface)，例如 IMyAzureClient，那么您可以为注入(inject)此接口(interface)的任何位置创建一个 stub 或模拟。

public sealed class MyAzureClientTests
{
    private Mock<HttpMessageHandler> _httpMessageHandlerMock;

    private MyAzureClient _sut;
    
    [SetUp]
    public void SetUp()
    {
        _httpMessageHandlerMock = new Mock<HttpMessageHandler>();

        var httpClient = new HttpClient(_httpMessageHandlerMock.Object);
        httpClient.BaseAddress = new Uri("https://unit-tests:1337/");
        _sut = new MyAzureclient(
            httpClient,
        );
    }

    [Test]
    public async Task YourTest()
    {
        // arrange
        var inputModel = new Fixture().Create<SomeInputModel>();
        var expectedJson = "{}";
        
        _httpMessageHandlerMock.Protected()
            .Setup<Task<HttpResponseMessage>>("SendAsync", ItExpr.IsAny<HttpRequestMessage>(), ItExpr.IsAny<CancellationToken>())
            .ReturnsAsync(new HttpResponseMessage {
                StatusCode = HttpStatusCode.OK,
                Content = new StringContent(expectedJson, Encoding.UTF8)
            }).Verifiable();
        
        // act
        var actual = await _sut.SomeMethodAsync(inputModel);

        // assert
        _httpMessageHandlerMock.Protected().Verify(
            "SendAsync",
            Times.Once(),
            ItExpr.IsAny<HttpRequestMessage>(),
            ItExpr.IsAny<CancellationToken>()
        );
        Assert.AreEqual(Guid.Parse("efc6f86b-f40c-4dce-baef-3bfae0bcdb08"), actual.MyProperty);
    }

如果您在开发环境中运行此程序，请考虑使用 stub ，并根据它接收到的参数模拟行为。