Apache HttpClient 中的单元测试超时 [英] Unit test timeouts in Apache HttpClient

问题描述

我正在尝试测试此方法以检查超时设置是否正确.

public HttpClientBuilder getClientBuilderWithTimeouts(final int connT, final int reqT, final int socketT){RequestConfig.Builder requestBuilder = RequestConfig.custom();requestBuilder = requestBuilder.setConnectTimeout(connT);requestBuilder = requestBuilder.setConnectionRequestTimeout(reqT);requestBuilder = requestBuilder.setSocketTimeout(socketT);HttpClientBuilder clientBuilder = HttpClientBuilder.create();clientBuilder.setDefaultRequestConfig(requestBuilder.build());返回客户端生成器；}

在我的单元测试中，虽然 getParams() 抛出 UnsupportedOperationException.如何在不使用集成测试的情况下解决此问题?

import org.apache.http.impl.client.CloseableHttpClient;导入 org.apache.http.impl.client.HttpClientBuilder;导入 org.apache.http.client.config.RequestConfig;...@测试public void testGetClientBuilderWithTimeouts(){HttpClientBuilder clBuilder = utils.getClientBuilderWithTimeouts(10, 20, 30);CloseableHttpClient testclient = clBuilder.build();System.out.println(testclient.getParams().getParameter("http.socket.timeout"));System.out.println(testclient.getParams().getParameter("http.connection.timeout"));//断言 ..}

解决方案

您可以尝试在构建实际客户端之前添加一个 HttpRequestInterceptor，在从您的 utils 类(您想要测试).

<预><代码>...导入 org.apache.http.HttpRequestInterceptor;导入 org.apache.http.client.config.RequestConfig;导入 org.apache.http.client.protocol.HttpClientContext;导入 org.apache.http.protocol.HttpContext;导入 org.apache.http.HttpRequest;导入 org.apache.http.HttpException;...builder.addInterceptorFirst(new HttpRequestInterceptor() {@覆盖public void process(HttpRequest request, HttpContext context) throws HttpException, IOException {//获取客户端上下文，其中包含请求配置RequestConfig requestConfig = HttpClientContext.adapt(context).getRequestConfig();assertEquals(10, requestConfig.getConnectTimeout());assertEquals(20, requestConfig.getConnectionRequestTimeout());assertEquals(30, requestConfig.getSocketTimeout());}});

现在只需调用任何 URL 并忽略客户端将在 URL 请求失败时抛出的异常.由于拦截器首先添加并且是请求拦截器，因此应该在尝试请求之前调用它，为您提供要断言的请求配置.

I'm trying to test this method checking that the timeouts are correctly set.

public HttpClientBuilder getClientBuilderWithTimeouts(final int connT, final int reqT, final int socketT){
    RequestConfig.Builder requestBuilder = RequestConfig.custom();
    requestBuilder = requestBuilder.setConnectTimeout(connT);
    requestBuilder = requestBuilder.setConnectionRequestTimeout(reqT);
    requestBuilder = requestBuilder.setSocketTimeout(socketT);
    HttpClientBuilder clientBuilder = HttpClientBuilder.create();     
    clientBuilder.setDefaultRequestConfig(requestBuilder.build());
    return clientBuilder;
}

In my unit test though getParams() throws UnsupportedOperationException. How can I solve this without using an integration test?

import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.client.config.RequestConfig;
...

@Test
public void testGetClientBuilderWithTimeouts(){

    HttpClientBuilder clBuilder = utils.getClientBuilderWithTimeouts(10, 20, 30);
    CloseableHttpClient testclient = clBuilder.build();

    System.out.println(testclient.getParams().getParameter("http.socket.timeout"));
    System.out.println(testclient.getParams().getParameter("http.connection.timeout"));
    // asserts ..
}

解决方案

You can try to add a HttpRequestInterceptor before building the actual client, after getting the client from your utils class (which you want to test).

...

import org.apache.http.HttpRequestInterceptor;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.HttpRequest;
import org.apache.http.HttpException;

... 

builder.addInterceptorFirst(new HttpRequestInterceptor() {

      @Override
      public void process(HttpRequest request, HttpContext context) throws HttpException, IOException {
        // Get hold of the client context, which holds the request config
        RequestConfig requestConfig = HttpClientContext.adapt(context).getRequestConfig();

        assertEquals(10, requestConfig.getConnectTimeout());
        assertEquals(20, requestConfig.getConnectionRequestTimeout());
        assertEquals(30, requestConfig.getSocketTimeout());
      }
    });     

Now just do a call to any URL and ignore the exception the client is going to throw in case the request to the URL fails. Since the interceptor is added as first and is a request interceptor, it should be called before the request is attempted, giving you the request config to assert.

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