在Azure Devops管道中使用Cosmos Db进行的单元测试失败

Question

我已经编写了单元测试用例，其中我的测试用例是针对Cosmos Db模拟器编写的。(那些不知道模拟器是什么的人，它是微软提供的本地开发宇宙Db，通常用于测试您的查询(

在我的单元测试用例中，我实例化Emulator数据库，然后运行测试用例。当我将这些更改推送到我的Azure devops管道时，就会出现问题。测试用例失败，错误为

目标计算机主动拒绝连接。

这确实意味着它无法实例化数据库。我该怎么解决这个问题。知道吗？？

这是测试的初始代码

public class CosmosDataFixture : IDisposable
{
public static readonly string CosmosEndpoint = "https://localhost:8081";
public static readonly string EmulatorKey = "C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==";
public static readonly string DatabaseId = "testdb";
public static readonly string RecordingCollection = "testcolec";
public static string Root = Directory.GetParent( Directory.GetCurrentDirectory() ).Parent.Parent.FullName;
public static DocumentClient client { get; set; }
public async Task ReadConfigAsync()
{
//  StartEmulatorDatabaseFromPowerShell();
client = new DocumentClient( new Uri( CosmosEndpoint ), EmulatorKey,
new ConnectionPolicy
{
ConnectionMode = ConnectionMode.Direct,
ConnectionProtocol = Protocol.Tcp
} );
await client.CreateDatabaseIfNotExistsAsync( new Database { Id = DatabaseId } );
await client.CreateDocumentCollectionIfNotExistsAsync( UriFactory.CreateDatabaseUri( DatabaseId ),
new DocumentCollection { Id = RecordingCollection } );
await ReadAllData( client );
}
public CosmosDataFixture()
{

ReadConfigAsync();     
}

public void Dispose()
{
DeleteDatabaseFromPowerShell();// this is also defined in above class
}
}   
public class CosmosDataTests : IClassFixture<CosmosDataFixture>
{ // mu unit test case goes here

Answer 1

您需要将此语句添加到yaml管道：

- task: PowerShell@2
inputs:
targetType: 'inline'
script: |
Import-Module "$env:ProgramFilesAzure Cosmos DB EmulatorPSModulesMicrosoft.Azure.CosmosDB.Emulator"
Start-CosmosDbEmulator    

CosmosDB的连接字符串应该是：AccountEndpoint=https://localhost:8081/;AccountKey=C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==

您可以这样实例化CosmosDB客户端：

var connectionString = "AccountEndpoint=https://localhost:8081/;AccountKey=C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==";
var client = new CosmosClient(connectionString);
var database = client.CreateDatabaseIfNotExistsAsync("testdb");
var container = await database.Database.CreateContainerIfNotExistsAsync("testcolec", "/partitionKey");