/// <summary>
/// Returns the remainder of <see cref="range"/> after subtracting <see cref="compare"/>
/// </summary>
/// <typeparam name="TRange"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <param name="range"></param>
/// <param name="compare"></param>
/// <returns></returns>
public static IEnumerable <TRange> Subtract <TRange, TValue>(
this TRange range,
IRange <TValue> compare)
where TRange : IRangeWith <TRange, TValue>
where TValue : IComparable <TValue>
{
if (!range.OverLaps(compare))
{
return(new[] { range });
}
if (compare.Ecapsulates(range))
{
return(new TRange[] { });
}
if (compare.EcapsulatesFrom(range))
{
return(new TRange[] { range.With(compare.Till, range.Till) });
}
if (compare.EcapsulatesTill(range))
{
return(new TRange[] { range.With(range.From, compare.From) });
}
return(new TRange[]
{
range.With(range.From, compare.From),
range.With(compare.Till, range.Till)
});
}
[InlineData(11, 13, false)] // out of range
public void Ecapsulates(int from, int till, bool expected)
{
Assert.Equal(expected, _range.Ecapsulates(new RangeModel <int>(from, till)));
}