public void ContactsGetGroups()
{
Contacts contacts = new Contacts();
Group group1 = new Group();
string name1 = "maichao";
string company1 = "ynu";
string position1 = "student";
Person person1 = new Person { Name = name1, Company = company1, Position = position1 };
group1.AddPerson(person1);
Assert.AreEqual(1, group1.Amount);
string name2 = "mai";
string company2 = "ynu";
string position2 = "graduate";
Person person2 = new Person { Name = name2, Company = company2, Position = position2 };
group1.AddPerson(person2);
Group group2 = new Group();
string name3 = "chao";
string company3 = "ynu";
string position3 = "graduate";
Person person3 = new Person { Name = name3, Company = company3, Position = position3 };
group2.AddPerson(person3);
Group group3 = new Group();
string name4 = "maichao";
string company4 = "ynu";
string position4 = "student";
Person person4 = new Person { Name = name4, Company = company4, Position = position4 };
group3.AddPerson(person4);
Assert.AreEqual(1, group3.Amount);
string name5 = "mai";
string company5 = "ynu";
string position5 = "graduate";
Person person5 = new Person { Name = name5, Company = company5, Position = position5 };
group3.AddPerson(person5);
contacts.AddGroup(group1);
contacts.AddGroup(group2);
contacts.AddGroup(group3);
List<Group> groups = contacts.GetGroups();
Assert.IsNotNull(groups);
Assert.AreEqual(4, groups.Count);
}
