我有以下代碼根據(jù)響應(yīng)代碼重試請(qǐng)求。public class Sample {    public static HttpClient getInstance() {        HttpClientBuilder builder = HttpClients.custom();                 builder.setServiceUnavailableRetryStrategy(new ServiceUnavailableRetryStrategy() {                int waitPeriod = 200;                @Override                public boolean retryRequest(final HttpResponse response, final int executionCount,                    final HttpContext context) {                    int statusCode = response.getStatusLine().getStatusCode();                    return ((statusCode == 429)&& (executionCount < 3));                }                @Override                public long getRetryInterval() {                    return waitPeriod;                }            });        return builder.build();    }}當(dāng)我為此方法編寫單元測(cè)試時(shí)，未涵蓋getInstance覆蓋的方法。(retryRequest, getRetryInterval)我如何編寫單元測(cè)試來覆蓋這些方法。通過谷歌搜索我發(fā)現(xiàn)我們可以使用ArgumentCaptor. 我試過下面的代碼，但它不起作用。import static org.mockito.Mockito.when;import static org.mockito.Mockito.verify;import org.apache.http.HttpResponse;import org.apache.http.StatusLine;import org.apache.http.client.ServiceUnavailableRetryStrategy;import org.apache.http.conn.ssl.SSLConnectionSocketFactory;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClientBuilder;import org.apache.http.impl.client.HttpClients;import org.apache.http.protocol.HttpContext;import org.junit.Before;import org.junit.Test;import org.junit.runner.RunWith;import org.mockito.ArgumentCaptor;import org.mockito.Mock;}argumentCaptor.capture()總是給我null。我越來越喜歡org.mockito.exceptions.base.MockitoException：沒有捕獲到參數(shù)值！您可能忘記在 verify() 中使用 argument.capture()... ...或者您在存根中使用了 capture() 但未調(diào)用存根方法。誰(shuí)可以幫我這個(gè)事。我想測(cè)試 retryRequest 方法的功能。