使用 Moq 模拟 KeyVaultClient 进行单元测试 C#答案

【问题标题】：Using Moq to Mock KeyVaultClient for Unit Test C#使用 Moq 模拟 KeyVaultClient 进行单元测试 C#
【发布时间】：2022-10-13 02:52:58
【问题描述】：

我正在尝试使用 mock 模拟 KeyVaultClient，以便我的单元测试在运行测试时不会依赖于我的 Azure KeyVault 服务。有没有类似于我用来模拟 SecretClient 的代码？

// Create a page of enumeration results
Page<SecretProperties> secretResponsePage = Page<SecretProperties>.FromValues(
    new[] {
              new SecretProperties("secret1"),
              new SecretProperties("secret2"),
              new SecretProperties("secret3"),
            },
            continuationToken: null,
            Mock.Of<Response>());

// Create a pageable that consists of a single page
AsyncPageable<SecretProperties> pageable = AsyncPageable<SecretProperties>.FromPages(new[] { secretResponsePage });

// Setup a client mock object to return the pageable when GetPropertiesOfSecretsAsync is called
var clientMock = new Mock<SecretClient>();
     clientMock.Setup(c => c.GetPropertiesOfSecretsAsync(It.IsAny<CancellationToken>()))
            .Returns(pageable);

【问题讨论】：

Moq 只能模拟标记为 virtual 的方法或接口。我建议将SecretClient 包装在您自己的类中，并从中创建您自己的界面。

标签： c# azure unit-testing nunit

【解决方案1】：

    public static KeyVaultService _clientService;
    private static Mock<IConfiguration> _mockConfig;

    public KeyVaultServiceTest()
    {
        _mockConfig = new Mock<IConfiguration>();            
        _clientService = new KeyVaultService(configuration);
    }    


    [TestMethod]
    public async Task GetSecretKeyVault_UnitTest()
    {
        string secret = "This is sceret key";

        Mock<SecretBundle> mockSecret = new Mock<SecretBundle>();
        mockSecret.SetupGet(x => x.Value).Returns("secret");

        Mock<KeyVaultClient> clientMock = new Mock<KeyVaultClient>();
        clientMock.Setup(x => x.GetSecretAsync(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<CancellationToken>())).Returns(Task.FromResult(mockSecret.Object));

        _clientService.SetServiceClient(clientMock.Object);
        _clientService.GetSecretKeyVault("test");   
    }

【讨论】：