@Test
public void testUpdateNameFail() {
when(dao.fetchPerson(1)).thenReturn(null);
boolean isUpdated = personService.update(1, "david");
assertFalse(isUpdated);
verify(dao).fetchPerson(1);
}
@Test
public void testUpdateName() {
Person p1 = new Person(1, "phil");
when(dao.fetchPerson(1)).thenReturn(p1);
boolean isUpdated = personService.update(1, "david");
assertTrue(isUpdated);
verify(dao).fetchPerson(1);
verify(dao).update(any(Person.class)); // verify(dao).update(p1)会报错。因为p1对象不一样！
assertEquals("david", p1.getPersonName());
// ArgumentCaptor ：参数捕获器
// ArgumentCaptor<Person> personCaptor = ArgumentCaptor.forClass(Person.class);
// verify(dao).update(personCaptor.capture());
//
// Person updatedPerson = personCaptor.getValue();
// assertEquals("david", updatedPerson.getPersonName());
}