public void Should_fail_when_asserting_nullable_numeric_value_equals_a_different_value()
{
// Arrange
DateOnly?nullableDateOnlyA = new DateOnly(2016, 06, 04);
DateOnly?nullableDateOnlyB = new DateOnly(2016, 06, 06);
// Act
Action action = () =>
nullableDateOnlyA.Should().Be(nullableDateOnlyB);
// Assert
action.Should().Throw <XunitException>();
}