public void TestIntersect()
{
var range1 = Range.Of(0, 9);
var range2 = Range.Of(0, 2);
var intersectRange = range1.Intersect(range2);
Assert.Equal(0, intersectRange.Start);
Assert.Equal(2, intersectRange.End);
range2 = Range.Of(10, 20);
intersectRange = range1.Intersect(range2);
Assert.Null(intersectRange);
range2 = Range.Of(-10, -1);
intersectRange = range1.Intersect(range2);
Assert.Null(intersectRange);
range2 = Range.Of(-5, 5);
intersectRange = range1.Intersect(range2);
Assert.Equal(0, intersectRange.Start);
Assert.Equal(5, intersectRange.End);
range2 = Range.Of(5, 15);
intersectRange = range1.Intersect(range2);
Assert.Equal(5, intersectRange.Start);
Assert.Equal(9, intersectRange.End);
}
public void TestInvalid()
{
var ex = Assert.Throws <ArgumentException>(() => Range.Of(0, -5));
_output.WriteLine(ex.Message);
Assert.True(ex.Message.Equals("Range end must >= range start."));
}
public void TestOf()
{
var range = Range.Of(0, 3);
Assert.Equal(0, range.Start);
Assert.Equal(3, range.End);
}