public void Union_IntervalsThatDoNotOverlapNorAreAdjacent_ThrowsInvalidOperationException()
{
IInterval <int> a = Interval.Create(10, 20);
IInterval <int> b = Interval.Create(25, 30);
Assert.Throws <InvalidOperationException>(() => a.GetUnion(b));
}
public void Union_NullOther_ThrowsInvalidOperationException()
{
IInterval <int> a = Interval.Create(10, 20);
IInterval <int> b = null;
Assert.Throws <InvalidOperationException>(() => a.GetUnion(b));
}
public void Union_NullInterval_ThrowsInvalidOperationException()
{
IInterval <int> a = null;
IInterval <int> b = Interval.Create(15, 25);
Assert.Throws <InvalidOperationException>(() => a.GetUnion(b));
}
public void Union_AdjacentIntervals_ReturnsUnion()
{
IInterval <int> a = Interval.Create(10, 20);
IInterval <int> b = Interval.Create(20, 25);
var union = a.GetUnion(b);
var expected = Interval.Create(10, 25);
Assert.That(union, Is.EqualTo(expected).Using(IntervalEqualityComparer <int> .Default));
}
