java - PowerMockito spy 不会阻止调用抽象方法

Question

我有以下类，我试图阻止 getString() 实际被调用，但它似乎每次都会被调用并抛出异常。我是否正确使用 PowerMockito 和 spy ？

public abstract class AbstractClass {
    protected String getString(String str){
        //databse stuff causing exception
    }
}

public class ImplClass extends AbstractClass{
    //getInstance() and private contructor
    public String method(){
        String str = getString("str");
    }
}

public class ImplClassTest{
    public void testMethod(){
        ImplClass impl = ImplClass.getInstance();
        ImplClass spy = PowerMockito.spy(impl);
        PowerMockito.doReturn("spy string").when(spy).method();
        impl.method(); //this line is still getting exception
    }
}

Answer 1

而不是

impl.method(); //this line is still getting exception

你应该打电话

spy.method();