public override bool Equals(object obj)
{
//1- Guard against null
if (obj == null)
{
return(false);
}
//2 - Check reference equality
if (ReferenceEquals(this, obj))
{
return(true);
}
//3 - Check type
if (this.GetType() != obj.GetType())
{
return(false);
}
//4 - Casting
PersonOverride _localP = (PersonOverride)obj;
//5 - Custom equality behavior
return(FirstName == _localP.FirstName &&
LastName == _localP.LastName);
}
public void LINQSingleSuccess()
{
people.Add(_globalPerson);
PersonOverride _localPerson = new PersonOverride {
FirstName = "Enrico", LastName = "Tirotta"
};
PersonOverride query = people.Single(p => p.Equals(_localPerson));
Assert.NotNull(query);
}
public void LINQAnySuccess()
{
people.Add(_globalPerson);
PersonOverride _localPerson = new PersonOverride {
FirstName = "Enrico", LastName = "Tirotta"
};
//bool check = people.Any(p => p == _psOne); == FAILS << no override
bool check = people.Any(p => p.Equals(_localPerson));
Assert.True(check);
}
public void LINQDistinctSuccess()
{
people.Add(_globalPerson);
PersonOverride _localPerson = new PersonOverride {
FirstName = "Enrico", LastName = "Tirotta"
};
people.Add(_localPerson);
int numberDistinctPeople = people.Distinct().Count();
Assert.Equal(1, numberDistinctPeople);
}
public bool Equals(PersonOverride p)
{
if (p == null)
{
return(false);
}
//Same object
if (ReferenceEquals(this, p))
{
return(true);
}
return(FirstName == p.FirstName && LastName == p.LastName);
}