java - 模拟 Apache HttpClient 4.4 PoolingHttpClientConnectionManager

Question

我知道如何模拟 default HttpClient ，但是我如何模拟使用 PoolingHttpClientConnectionManager 创建的最新(v4.4)HttpClient与莫基托？

我的代码如下所示:

PoolingHttpClientConnectionManager mgr = new PoolingHttpClientConnectionManager();
...
CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(mgr).build();
HttpResponse response = httpClient.execute(request);            
... // here I want to substitute a mocked HttpResponse

Answer 1

模拟 HttpRequestExecutor 可能比模拟 HttpClientConnection 更容易。您仍然需要提供 HttpClientConnectionManager 的无操作实现，以防止 HttpClient 创建和连接套接字

HttpRequestExecutor requestExecutor = Mockito.mock(HttpRequestExecutor.class);
Mockito.when(requestExecutor.execute(
        Mockito.<HttpRequest>any(),
        Mockito.<HttpClientConnection>any(),
        Mockito.<HttpContext>any())).thenReturn(new BasicHttpResponse(HttpVersion.HTTP_1_1, 200, "Hah"));

HttpClientConnectionManager cm = Mockito.mock(HttpClientConnectionManager.class);
HttpClientConnection conn = Mockito.mock(HttpClientConnection.class);
ConnectionRequest connRequest = Mockito.mock(ConnectionRequest.class);
Mockito.when(cm.requestConnection(
        Mockito.<HttpRoute>any(),
        Mockito.any())).thenReturn(connRequest);
Mockito.when(connRequest.get(
        Mockito.anyLong(),
        Mockito.<TimeUnit>any())).thenReturn(conn);

CloseableHttpClient client = HttpClients.custom()
        .setRequestExecutor(requestExecutor)
        .setConnectionManager(cm)
        .build();

CloseableHttpResponse response = client.execute(new HttpGet("http://pampa/"));
try {
    System.out.println(response.getStatusLine());
} finally {
    response.close();
}