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我有一个执行DNS检查的命令行工具.如果DNS检查成功,则命令继续执行其他任务.我正在尝试使用Mockito为此编写单元测试.这是我的代码:

public class Command() {
    // ....
    void runCommand() {
        // ..
        dnsCheck(hostname, new InetAddressFactory());
        // ..
        // do other stuff after dnsCheck
    }

    void dnsCheck(String hostname, InetAddressFactory factory) {
        // calls to verify hostname
    }
}

我正在使用InetAddressFactory来模拟类的静态实现InetAddress.这是工厂的代码:

public class InetAddressFactory {
    public InetAddress getByName(String host) throws UnknownHostException {
        return InetAddress.getByName(host);
    }
}

这是我的单元测试用例:

@RunWith(MockitoJUnitRunner.class)
public class CmdTest {

    // many functional tests for dnsCheck

    // here's the piece of code that is failing
    // in this test …