public void ClassWithCustomEquals()
{
var point1 = new EqualsMethod.CustomEquals.PointClass {
X = 1, Y = 2
};
var point2 = new EqualsMethod.CustomEquals.PointClass {
X = 1, Y = 2
};
Assert.IsTrue(point1.Equals(point2));
}
public void ClassWithCustomEqualsReferenceEquals()
{
var point1 = new EqualsMethod.CustomEquals.PointClass {
X = 1, Y = 2
};
var point2 = new EqualsMethod.CustomEquals.PointClass {
X = 1, Y = 2
};
Assert.IsFalse(ReferenceEquals(point1, point2));
var point3 = point1;
Assert.IsTrue(ReferenceEquals(point1, point3));
}
public void ClassWithCustomEqualsHashSet()
{
var point1 = new EqualsMethod.CustomEquals.PointClass {
X = 1, Y = 2
};
var point2 = new EqualsMethod.CustomEquals.PointClass {
X = 1, Y = 2
};
// overridden Equals method returns true
Assert.IsTrue(point1.Equals(point2));
// default GetHashCode method returns different values
Assert.IsFalse(point1.GetHashCode() == point2.GetHashCode());
var set = new HashSet <EqualsMethod.CustomEquals.PointClass>();
set.Add(point1);
set.Add(point2);
// HashSet adds both points because of different GetHashCode value
Assert.IsFalse(set.Count == 1);
}
