匿名定义接口的单元测试用例

Question

我有一个实现回调的接口:-

public interface Callback {
    void printData(String data);
}

我要为其编写单元测试用例的类

public class MainClass{
    public void getData(String data)
    {
      // here I am calling another class which accepts that interface as param and implementing it anonymously
       otherClass.getOtherData(data, new new Callback() {
            void printData(String data)
            {
              // do some logic with data
            }
       });
    }
}

当我使用EasyMock为MainClass编写测试用例时，它有以下代码片段

MainClass mainclass = new MainClass();
OtherClass otherClass = EasyMock.createMock(OtherClass.class);
Callback callback = EasyMock.createMock(Callback.class);
otherClass.getOtherData("test", callback);
EasyMock.expectLastCall().andAnswer(new IAnswer<Object>() {
@Override
public Object answer() throws Throwable {
  callback.printData(message);
  return null;
  }
}).once();

给出以下错误:-

意外的方法调用OtherClass。getOtherData("测试",MainClass $ 1 @7c03092a):OtherClass。gettotherdata ("test"， EasyMock for interface Callback):期望:1，实际:0

我正在使用EasyMock和PowerMock的组合。任何帮助或指点都将大有帮助。提前感谢

Answer 1

在测试用例中按下面一行操作:-

otherClass.getOtherData(EasyMock.isA(String.class), EasyMock.isA(Callback.class));