public void ShouldBeSameForTheSameInstance()
{
TestValueObject valueObject1 = new TestValueObject("Test", 123);
int hashCode1 = valueObject1.GetHashCode();
int hashCode2 = valueObject1.GetHashCode();
hashCode1.Should().Be(hashCode2);
}
public void GetHashCode_SameObjects_Equal()
{
TestValueObject obj1 = new TestValueObject(1, "hello");
TestValueObject obj2 = new TestValueObject(1, "hello");
Assert.Equal(obj1.GetHashCode(), obj2.GetHashCode());
}
public void Must_Not_Be_Equal_For_The_Different_Instances_With_Different_Values()
{
TestValueObject valueObject1 = new TestValueObject("Test", 123);
TestValueObject valueObject2 = new TestValueObject("Test2", 1234);
Assert.True(valueObject1.GetHashCode() != valueObject2.GetHashCode());
}
public void ShouldNotBeSameForTheDifferentInstancesWithDifferentValues()
{
TestValueObject valueObject1 = new TestValueObject("Test", 123);
TestValueObject valueObject2 = new TestValueObject("Test2", 1234);
int hashCode1 = valueObject1.GetHashCode();
int hashCode2 = valueObject2.GetHashCode();
hashCode1.Should().NotBe(hashCode2);
}
public void ItShouldGenerateConsistentHashCodes(TestValueObject a,
TestValueObject b,
bool expected)
{
// Act
var actual = a.GetHashCode() == b.GetHashCode();
// Assert
Assert.Equal(expected, actual);
}
public void EqualWhenComponentsAreEqual()
{
var left = new TestValueObject(1, "caseless", "ABcd");
var right = new TestValueObject(1, "caseLESS", "ABcd");
left.Equals(right as object).Should().BeTrue();
left.Equals(right).Should().BeTrue();
(left == right).Should().BeTrue();
(left != right).Should().BeFalse();
left.GetHashCode().Should().Be(right.GetHashCode());
}
public void ValueObjectsAreNotEqualWhenNotAllPropertiesHaveSameValue()
{
var testValueObject = new TestValueObject {
Firstname = "Robin", Lastname = "van der Knaap"
};
var testValueObject2 = new TestValueObject {
Firstname = "Daan", Lastname = "le Duc"
};
Assert.AreNotEqual(testValueObject, testValueObject2);
Assert.IsFalse(testValueObject == testValueObject2);
Assert.IsTrue(testValueObject != testValueObject2);
Assert.AreNotEqual(testValueObject.GetHashCode(), testValueObject2.GetHashCode());
var valueObjectSet = new HashSet <ValueObject> {
testValueObject, testValueObject2
};
Assert.AreEqual(2, valueObjectSet.Count);
}
public void Must_Be_Equal_For_The_Same_Instance()
{
TestValueObject valueObject1 = new TestValueObject("Test", 123);
Assert.True(valueObject1.GetHashCode() == valueObject1.GetHashCode());
}