EasyMock：如何模拟对象映射

Question

I am new to EasyMock, tried searching solution to my problem but cudn't find. I have a class "Student" which has several attributes one being "student_id", it has all setter and getter methods . I have written a function like this which takes Map of Student objects as key and value is their CGPA, it returns a Map having top 5 students by CGPA.

Map<Student,Double>  getMaxCPAStudent(Map<Student,Double>)  

In my test class I write:

control = EasyMock.createControl();
mockStudent = control.createMock(Student.class);  

But while putting them in Map with different scores they will all have the same key, how to test this function ??

Thanks, Amit

Answer 1

I think that EasyMock overrides hashcode() and equals() in its mocks so creating multiple mock Students will never have the same hash. This means you should be able to put them all in a Map just fine.

So your test code shouldn't be any different than if you were writing production code with this method. Create some mock students, put them in a Map and then call your max method to get a new map back and check that the keys and values are correct.

slightly off topic, unless you are using an Ancient version of Easymock, you should never have to deal with MockControl class.

Student mockStudent = EasyMock.createMock(Student.class);

Should work just fine.