因此,我尝试测试Azure表存储并模拟我依赖的东西。我的类的构造方式是在构造函数中建立连接,即,我创建了CloudStorageAccount
的新实例,在其中创建了具有StorageCredentials
和{{ 1}}。之后,我创建一个storageName
的实例,在代码中进一步使用它来执行CRUD操作。我的课如下:
storageKey
CloudTable
在整个类中出于不同目的被重用。我的目标是模拟它,但是由于它是虚拟的并且没有实现任何接口,因此我无法提供简单的public class TableStorage : ITableStorage
{
private const string _records = "myTable";
private CloudStorageAccount _storageAccount;
private CloudTable _table;
private ILogger<TableStorage> _logger;
public AzureTableStorageService(ILogger<TableStorage> loggingService)
{
_storageAccount = new CloudStorageAccount(new StorageCredentials(
ConfigurationManager.azureTableStorageName, ConfigurationManager.azureTableStorageKey), true);
_table = _storageAccount.CreateCloudTableClient().GetTableReference(_records);
_table.CreateIfNotExistsAsync();
_logger = loggingService;
}
//...
//Other methods here
}
解决方案,例如:
_table
因此,当我尝试以这种方式构造单元测试时,我得到:
Mock
我的目标是完成类似的事情:
_storageAccount = new Mock<CloudStorageAccount>(new Mock<StorageCredentials>(("dummy", "dummy"), true));
_table = new Mock<CloudTable>(_storageAccount.Object.CreateCloudTableClient().GetTableReference(_records));
任何想法都受到高度赞赏!
答案 0 :(得分:2)
我还努力为Azure功能实现单元测试,并绑定到Azure表存储。我终于使用派生的CloudTable类工作了,可以覆盖我使用的方法并返回固定的结果。
/// <summary>
/// Mock class for CloudTable object
/// </summary>
public class MockCloudTable : CloudTable
{
public MockCloudTable(Uri tableAddress) : base(tableAddress)
{ }
public MockCloudTable(StorageUri tableAddress, StorageCredentials credentials) : base(tableAddress, credentials)
{ }
public MockCloudTable(Uri tableAbsoluteUri, StorageCredentials credentials) : base(tableAbsoluteUri, credentials)
{ }
public async override Task<TableResult> ExecuteAsync(TableOperation operation)
{
return await Task.FromResult(new TableResult
{
Result = new ScreenSettingEntity() { Settings = "" },
HttpStatusCode = 200
});
}
}
我通过传递存储模拟器用于本地存储的配置字符串来实例化模拟类(请参见https://docs.microsoft.com/en-us/azure/storage/common/storage-configure-connection-string)。
var mockTable = new MockCloudTable(new Uri("http://127.0.0.1:10002/devstoreaccount1/screenSettings"));
在此示例中,“ screenSettings”是表格的名称。
现在可以将模拟类从单元测试传递给Azure函数。
也许这就是您想要的?
答案 1 :(得分:1)
我遇到了与所选答案相同的情况,涉及带有表绑定的 Azure 函数。使用模拟 $ helm install myapp myapp --set environment=sandbox
apiVersion: apps/v1
kind: Deployment
metadata:
...
spec:
{{- if not .Values.autoscaling.enabled }}
# In pseudo-code, in my YAML files
# Get the index value from .Values.environments list
# based on pass-in environment parameter
{{ $myIndex = indexOf .Values.environments .Value.environment }}
replicas: {{ .Values.perClusterValues.replicas $myIndex }}
{{- end }}
有一些限制,尤其是在将 CloudTable
与 System.Linq
一起使用时,例如这些是 CreateQuery<T>
上的扩展方法。
更好的方法是使用 IQueryable
模拟,例如 RichardSzalay.MockHttp 和 HttpMessageHandler
,然后仅删除您期望从表中获得的 json 响应。
TableClientConfiguration.RestExecutorConfiguration.DelegatingHandler
答案 2 :(得分:0)
要在此处添加答案,因为您打算使用模拟框架,只需设置一个从CloudTable继承并提供默认构造函数的对象,即可让您模拟继承的对象本身并控制其返回的内容:
public class CloudTableMock : CloudTable
{
public CloudTableMock() : base(new Uri("http://127.0.0.1:10002/devstoreaccount1/screenSettings"))
{
}
}
这只是创建模拟的一种情况。我正在使用NSubstitute,所以我这样做了:
_mockTable = Substitute.For<CloudTableMock>();
但我猜测Moq会允许:
_mockTableRef = new Mock<CloudTable>();
_mockTableRef.Setup(x => x.DoSomething()).ReturnsAsync("My desired result");
_mockTable = _mockTableRef.Object;
(我的起订量有点生锈,所以我猜上面的语法不太正确)
答案 3 :(得分:0)
这是我的实现方式
public class StorageServiceTest
{
IStorageService _storageService;
Mock<CloudStorageAccount> _storageAccount;
[SetUp]
public void Setup()
{
var c = new StorageCredentials("dummyStorageAccountName","DummyKey");
_storageAccount = new Mock<CloudStorageAccount>(c, true);
_storageService = new StorageService(_storageAccount.Object);
}
[Test]
[TestCase("ax0-1s", "random-1")]
public void get_content_unauthorized(string containerName,string blobName)
{
//Arrange
string expectOutputText = "Something on the expected blob";
Uri uri = new Uri("https://somethig.com//");
var blobClientMock = new Mock<CloudBlobClient>(uri);
_storageAccount.Setup(a => a.CreateCloudBlobClient()).Returns(blobClientMock.Object);
var cloudBlobContainerMock = new Mock<CloudBlobContainer>(uri);
blobClientMock.Setup(a => a.GetContainerReference(containerName)).Returns(cloudBlobContainerMock.Object);
var cloudBlockBlobMock = new Mock<CloudBlockBlob>(uri);
cloudBlobContainerMock.Setup(a => a.GetBlockBlobReference(blobName)).Returns(cloudBlockBlobMock.Object);
cloudBlockBlobMock.Setup(a => a.DownloadTextAsync()).Returns(Task.FromResult(expectOutputText));
//Act
var actual = _storageService.DownloadBlobAsString(containerName, blobName);
//Assert
Assert.IsNotNull(actual);
Assert.IsFalse(string.IsNullOrWhiteSpace(actual.Result));
Assert.AreEqual(actual.Result, expectOutputText);
}
}
服务类实现:
Task<string> IStorageService.DownloadBlobAsString(string containerName, string blobName)
{
var blobClient = this.StorageAccountClient.CreateCloudBlobClient();
var blobContainer = blobClient.GetContainerReference(containerName);
var blobReference = blobContainer.GetBlockBlobReference(blobName);
var blobContentAsString = blobReference.DownloadTextAsync();
return blobContentAsString;
}