在Azure函数中模拟IHttpClientFactory接口时遇到问题。这是我在做什么，我已经触发，一旦收到消息，我就调用API来更新数据。我为此使用SendAsync方法。在编写单元测试用例时，我无法模拟客户端。对于测试，我尝试在构造函数本身中进行get调用，但仍然无法正常工作。 函数类
public class UpdateDB
{
private readonly IHttpClientFactory _clientFactory;
private readonly HttpClient _client;
public UpdateDB(IHttpClientFactory clientFactory)
{
_clientFactory = clientFactory;
_client = clientFactory.CreateClient();
_client.GetAsync("");
}
[FunctionName("DB Update")]
public async Task Run([ServiceBusTrigger("topic", "dbupdate", Connection = "connection")]string mySbMsg, ILogger log)
{
var client = _clientFactory.CreateClient();
log.LogInformation($"C# ServiceBus topic trigger function processed message: {mySbMsg}");
DBConvert payload = JsonConvert.DeserializeObject<DBConvert>(mySbMsg);
string jsonContent = JsonConvert.SerializeObject(payload);
var httpContent = new StringContent(jsonContent, Encoding.UTF8, "application/json");
HttpRequestMessage message = new HttpRequestMessage(HttpMethod.Post, "api/DBU/data");
message.Content = httpContent;
var response = await client.SendAsync(message);
}
}
TestClass
namespace XUnitTestProject1
{
public class DelegatingHandlerStub : DelegatingHandler
{
private readonly Func<HttpRequestMessage, CancellationToken, Task<HttpResponseMessage>> _handlerFunc;
public DelegatingHandlerStub()
{
_handlerFunc = (request, cancellationToken) => Task.FromResult(request.CreateResponse(HttpStatusCode.OK));
}
public DelegatingHandlerStub(Func<HttpRequestMessage, CancellationToken, Task<HttpResponseMessage>> handlerFunc)
{
_handlerFunc = handlerFunc;
}
protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
return _handlerFunc(request, cancellationToken);
}
}
public class test
{
[Fact]
public async Task Should_Return_Ok()
{
//
Mock<ILogger> _logger = new Mock<ILogger>();
var expected = "Hello World";
var mockFactory = new Mock<IHttpClientFactory>();
var configuration = new HttpConfiguration();
var clientHandlerStub = new DelegatingHandlerStub((request, cancellationToken) =>
{
request.SetConfiguration(configuration);
var response = request.CreateResponse(HttpStatusCode.Accepted);
return Task.FromResult(response);
});
var client = new HttpClient(clientHandlerStub);
mockFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(client);
var clientTest = mockFactory.Object.CreateClient();
//Works Here, but not in the instance.
clientTest.GetAsync("");
IHttpClientFactory factory = mockFactory.Object;
var service = new UpdateDB(factory);
await service.Run("", _logger.Object);
}
}
}
我在这里关注了样本。 How to mock the new HttpClientFactory in .NET Core 2.1 using Moq
答案 0 :(得分：2)
对于嘲笑/拦截<xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text" encoding="us-ascii"/>
<xsl:strip-space elements="*"/>
<xsl:template match="addRequest">
<xsl:apply-templates select="attributes"/><xsl:text>
</xsl:text><xsl:text>
</xsl:text>
</xsl:template>
<xsl:template match="attributes">
<xsl:value-of select="distinct-values(attr[@name='GPEIEnsDiv']/value/substring-before(.,'$'))" separator=","/>
<xsl:text> </xsl:text>
</xsl:template>
</xsl:stylesheet>
的用法，我建议您使用mockhttp
您的测试将是：
HttpClient您可以进一步配置HTTP请求期望的行为，但是为此您应该阅读class Test {
private readonly Mock<IHttpClientFactory> httpClientFactory;
private readonly MockHttpMessageHandler handler;
constructor(){
this.handler = new MockHttpMessageHandler();
this.httpClientFactory = new Mock<IHttpClientFactory>();
this.httpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>()))
.Returns(handler.ToHttpClient());
}
[Fact]
public async Task Test(){
// Arrange
this.handler.Expect("api/DBU/data")
.Respond(HttpStatusCode.Ok);
var sut = this.CreateSut();
// Act
await sut.Run(...);
// Assert
this.handler.VerifyNoOutstandingExpectation();
}
private UpdateDB CreateSut() => new UpdateDB(this.httpClientFactory.Object);
}