Powermock - how to mock a specific method and leave the rest of the object as-is

Question

I have a Person class with get set for FirstName, LastName

A TestClass to execute TestCase1

Can we just only mock a specific method (getLastName) and leave every

Answer 1

You can use spy to mock individual (including private) methods:

Person classUnderTest = PowerMockito.spy(new Person());

    // use PowerMockito to set up your expectation
    PowerMockito.doReturn("Fixed value").when(classUnderTest, "getLastName");