void WhenTwoValuesAreTheSame_ShouldBeEqual()
{
var person = new PersonStruct()
{
FirstName = "John", LastName = "Smith"
};
var samePerson = person;
Assert.True(person.Equals(samePerson));
Assert.True(person.GetHashCode() == samePerson.GetHashCode());
Assert.True(person == samePerson);
Assert.False(person != samePerson);
}
void WhenTwoStructsContainsDifferentValues_ShouldNotBeEqual()
{
var person = new PersonStruct()
{
FirstName = "John", LastName = "Smith"
};
var otherPerson = new PersonStruct()
{
FirstName = "Bob", LastName = "Smith"
};;
Assert.False(person.Equals(otherPerson));
Assert.False(person.GetHashCode() == otherPerson.GetHashCode());
Assert.False(person == otherPerson);
Assert.True(person != otherPerson);
}
static void Main(string[] args)
{
// Create a normal struct
var jane = new PersonStruct()
{
Name = "Jane", Age = 100
};
// Create a ref struct
var bob = new PersonRefStruct()
{
Name = "Bob", Age = 100
};
// Since a struct is a value type, it can be boxed
jane.GetHashCode();
jane.ToString();
// But a ref struct does not alow boxing, so these cause a compler error
//bob.GetHashCode();
//bob.ToString();
}
public void GetHashCode_LastNamesNotEqual_NotEqual()
{
// Arrange
var p1 = new PersonStruct
{
FirstName = "Kim",
LastName = "Kuan"
};
var p2 = new PersonStruct
{
FirstName = "Kim",
LastName = "Kuann"
};
// Act
var hash1 = p1.GetHashCode();
var hash2 = p2.GetHashCode();
// Assert
Assert.AreNotEqual(hash1, hash2);
}
public void CSharpPersonStructTests()
{
// Arrange
var person1 = new PersonStruct("Name", new DateTime(2000, 1, 1));
var person2 = new PersonStruct("Name", new DateTime(2000, 1, 1));
// Debug
//output.WriteLine($"person1.GetHashCode(): {person1.GetHashCode()}");
//output.WriteLine($"person2.GetHashCode(): {person2.GetHashCode()}");
// Assert
person1.Should().NotBeNull();
person2.Should().NotBeNull();
person1.Should().NotBeSameAs(person2);
person1.Should().BeEquivalentTo(person2);
person1.Name.Should().NotBeNullOrEmpty();
person1.DateOfBirth.Should().HaveYear(2000);
person1.Children.Should().NotBeNull();
Assert.Equal(person1.GetHashCode(), person2.GetHashCode());
Assert.Equal(person1, person2);
}