public void GetHashCode_Should_ReturnSameValues()
{
// Arrange
var value1 = new MyValueObject(10, "Unit Tests");
var value2 = new MyValueObject(10, "Unit Tests");
// Act & Assert
Assert.Equal(value1.GetHashCode(), value2.GetHashCode());
}
public void GetHashCode_Should_ReturnValue_WhenItContainsNullProperties()
{
// Arrange
const int expected = 512;
var value1 = new MyValueObject(512, null);
// Act
var actual = value1.GetHashCode();
// Assert
Assert.Equal(expected, actual);
}
public void TwoValueObjectsWithSameValuesButDifferentTypesAreNotEqual()
{
MyValueObject object1 = new MyValueObject("string", 100);
MySimilarValueObject object2 = new MySimilarValueObject("string", 100);
MyInheritedValueObject object3 = new MyInheritedValueObject("string", 100);
MyExtendedValueObject object4 = new MyExtendedValueObject("string", 100, 102);
Assert.AreNotSame(object1, object2);
Assert.AreNotSame(object1, object3);
Assert.AreNotSame(object1, object4);
Assert.AreEqual(object1, object1);
Assert.AreNotEqual(object1, object2);
Assert.AreNotEqual(object2, object1);
Assert.AreNotEqual(object1, object3);
Assert.AreNotEqual(object3, object1);
Assert.AreNotEqual(object1, object4);
Assert.AreNotEqual(object4, object1);
Assert.AreNotEqual(object1.GetHashCode(), object2.GetHashCode());
Assert.AreNotEqual(object2.GetHashCode(), object1.GetHashCode());
Assert.AreNotEqual(object1.GetHashCode(), object3.GetHashCode());
Assert.AreNotEqual(object3.GetHashCode(), object1.GetHashCode());
Assert.AreNotEqual(object1.GetHashCode(), object4.GetHashCode());
Assert.AreNotEqual(object4.GetHashCode(), object1.GetHashCode());
}
public void TwoValueObjectsWithSameValuesAreEqual()
{
MyValueObject object1 = new MyValueObject("string", 100);
MyValueObject object2 = new MyValueObject("string", 100);
Assert.AreNotSame(object1, object2);
Assert.AreEqual(object1, object1);
Assert.AreEqual(object1, object2);
Assert.AreEqual(object2, object1);
Assert.AreEqual(object1.GetHashCode(), object2.GetHashCode());
Assert.AreEqual(object2.GetHashCode(), object1.GetHashCode());
}