public void IComparableCompareTo_WithParameterEqualToNull_Returns1(int yearNum)
{
IComparable calYear = new CalendarYear(yearNum);
var comp = calYear.CompareTo(null);
Assert.AreEqual(1, comp);
}
public void IComparableCompareTo_WithParameterNotOfCalendarYearType_ThrowsArgumentException(int yearNum)
{
IComparable calYear = new CalendarYear(yearNum);
object obj = new object();
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
Assert.Throws <ArgumentException>(() => calYear.CompareTo(obj));
}
public void IComparableCompareTo_WithParameterIdenticalToInstance_ReturnsZero(int yearNum)
{
IComparable calYear1 = new CalendarYear(yearNum);
object calYear2 = new CalendarYear(yearNum);
var comp = calYear1.CompareTo(calYear2);
Assert.AreEqual(0, comp);
}
public void IComparableCompareTo_WithParameterLaterThanInstance_ReturnsNegativeNumber(int yearNumInstance, int yearNumParameter)
{
IComparable calYear1 = new CalendarYear(yearNumInstance);
object calYear2 = new CalendarYear(yearNumParameter);
var comp = calYear1.CompareTo(calYear2);
Assert.That(comp, Is.LessThan(0));
}
public void CompareTo_WithParameterEarlierThanInstance_ReturnsPositiveNumber(int yearNumInstance, int yearNumParameter)
{
var calYear1 = new CalendarYear(yearNumInstance);
var calYear2 = new CalendarYear(yearNumParameter);
var comp = calYear1.CompareTo(calYear2);
Assert.That(comp, Is.GreaterThan(0));
}