Question

我正在尝试构建一个CloseableHttpResponse模拟对象，以便在我的一个单元测试中返回，但是没有构造函数。我找到了这个DefaultHttpResponseFactory，但它只产生了一个HttpResponse。构建CloseableHttpResponse的简单方法是什么？我是否需要在测试中致电execute()，然后设置statusLine和entity？这似乎是一种奇怪的方法。

这是我试图模仿的方法：

public static CloseableHttpResponse getViaProxy(String url, String ip, int port, String username,
                                                String password) {
    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(
            new AuthScope(ip, port),
            new UsernamePasswordCredentials(username, password));
    CloseableHttpClient httpclient = HttpClients.custom()
            .setDefaultCredentialsProvider(credsProvider).build();
    try {
        RequestConfig config = RequestConfig.custom()
                .setProxy(new HttpHost(ip, port))
                .build();
        HttpGet httpGet = new HttpGet(url);
        httpGet.setConfig(config);

        LOGGER.info("executing request: " + httpGet.getRequestLine() + " via proxy ip: " + ip + " port: " + port +
                " username: " + username + " password: " + password);

        CloseableHttpResponse response = null;
        try {
            return httpclient.execute(httpGet);
        } catch (Exception e) {
            throw new RuntimeException("Could not GET with " + url + " via proxy ip: " + ip + " port: " + port +
                    " username: " + username + " password: " + password, e);
        } finally {
            try {
                response.close();
            } catch (Exception e) {
                throw new RuntimeException("Could not close response", e);
            }
        }
    } finally {
        try {
            httpclient.close();
        } catch (Exception e) {
            throw new RuntimeException("Could not close httpclient", e);
        }
    }
}

以下是使用PowerMockito的模拟代码：

    mockStatic(HttpUtils.class);
    when(HttpUtils.getViaProxy("http://www.google.com", anyString(), anyInt(), anyString(), anyString()).thenReturn(/*mockedCloseableHttpResponseObject goes here*/)

Answer 1

按照以下步骤可能会有所帮助：

1.mock it（ex.cileito）

CloseableHttpResponse response = mock(CloseableHttpResponse.class);
HttpEntity entity = mock(HttpEntity.class);

2.应用一些规则

when(response.getStatusLine()).thenReturn(new BasicStatusLine(HttpVersion.HTTP_1_1, HttpStatus.SC_OK, "FINE!"));
when(entity.getContent()).thenReturn(getClass().getClassLoader().getResourceAsStream("result.txt"));
when(response.getEntity()).thenReturn(entity);

3.使用

when(httpClient.execute((HttpGet) any())).thenReturn(response);

Answer 2

我想创建一个具体的CloseableHttpResponse而不是mock，所以我在Apache HTTP客户端源代码中跟踪它。

在MainClientExec中，来自execute的所有返回值如下所示：

return new HttpResponseProxy(response, connHolder);

其中connHolder可以为null。

HttpResponseProxy只是一个瘦的包装器，可以在connHolder上关闭。不幸的是，它受到包裹保护，所以它不一定是可见的。

我所做的是创建一个＆＃34; PublicHttpResponseProxy＆＃34;

package org.apache.http.impl.execchain;

import org.apache.http.HttpResponse;

public class PublicHttpResponseProxy extends HttpResponseProxy {

    public PublicHttpResponseProxy(HttpResponse original) {
        super(original, null);
    }
}

必须在包中＆＃34; org.apache.http.impl.execchain＆＃34; （！）基本上将visiblity颠覆为public并为构造函数提供null连接处理程序。

现在我可以使用

实例化具体的CloseableHttpResponse

CloseableHttpResponse response = new PublicHttpResponseProxy(basicResponse);

通常的警告适用。由于代理是受包保护的，因此它不是官方API的一部分，因此您可能正在滚动它以后将无法使用的骰子。另一方面，它并不多，所以你可以轻松地编写自己的版本。会有一些剪切和粘贴，但它不会那么糟糕。

Answer 3

自问这个问题以来已经有一段时间了，但我想提供一个我用过的解决方案。

我创建了一个扩展BasicHttpResponse类的小类，并实现了CloseableHttpResponse接口（除了关闭响应的方法之外）。由于BasicHttpResponse类包含几乎所有内容的setter方法，因此我可以使用以下代码设置所需的所有字段：

public static CloseableHttpResponse buildMockResponse() throws FileNotFoundException {
    ProtocolVersion protocolVersion = new ProtocolVersion("HTTP", 1, 1);
    String reasonPhrase = "OK";
    StatusLine statusline = new BasicStatusLine(protocolVersion, HttpStatus.SC_OK, reasonPhrase);
    MockCloseableHttpResponse mockResponse = new MockCloseableHttpResponse(statusline);
    BasicHttpEntity entity = new BasicHttpEntity();
    URL url = Thread.currentThread().getContextClassLoader().getResource("response.txt");
    InputStream instream = new FileInputStream(new File(url.getPath()));
    entity.setContent(instream);
    mockResponse.setEntity(entity);
    return mockResponse;
}

我基本上设置了实际代码使用的所有字段。这还包括将模拟响应内容从文件读取到流中。

Answer 4

创建一个支持现有BasicHttpResponse类型的测试实现非常容易：

public class TestCloseableHttpResponse extends BasicHttpResponse implements CloseableHttpResponse {

    public TestCloseableHttpResponse(StatusLine statusline, ReasonPhraseCatalog catalog, Locale locale) {
        super(statusline, catalog, locale);
    }

    public TestCloseableHttpResponse(StatusLine statusline) {
        super(statusline);
    }

    public TestCloseableHttpResponse(ProtocolVersion ver, int code, String reason) {
        super(ver, code, reason);
    }


    @Override
    public void close() throws IOException { }

}

Answer 5

nvm，我最后只是使用execute()

进行黑客攻击

private CloseableHttpResponse getMockClosesableHttpResponse(HttpResponse response) throws Exception {
    CloseableHttpClient httpClient = HttpClients.createDefault();
    CloseableHttpResponse closeableHttpResponse = httpClient.execute(new HttpGet("http://www.test.com"));
    closeableHttpResponse.setEntity(response.getEntity());
    closeableHttpResponse.setStatusLine(response.getStatusLine());
    return closeableHttpResponse;
}

Answer 6

这对我有用：

HttpEntity httpEntity = mock(HttpEntity.class); // mocked

CloseableHttpResponse closeableHttpResponse = mock(CloseableHttpResponse.class) // mocked

CloseableHttpClient closeableHttpClient = mock(CloseableHttpClient .class) // mocked

String resultJson =
    "{\"key\": \"value\"}";

InputStream is = new ByteArrayInputStream( resultJson.getBytes() );

Mockito.when(httpEntity.getContent()).thenReturn(is);
Mockito.when( httpEntity.getContentLength() ).thenReturn(Long.valueOf(.length()));
StatusLine statusLine = new BasicStatusLine(new ProtocolVersion("http", 1, 1), 200, "success");
Mockito.when(httpEntity.toString()).thenReturn(resultJson);
Mockito.when(closeableHttpResponse.getEntity()).thenReturn(httpEntity);
Mockito.when(closeableHttpResponse.getStatusLine()).thenReturn(statusLine);

Mockito.when(closeableHttpClient.execute((HttpPost) 
Mockito.any())).thenReturn(closeableHttpResponse);

如何创建CloseableHttpResponse对象来帮助测试？

6 个答案: