public void TestEmptyRanges()
{
var r1 = IntRange.FromInteger(0);
var r2 = IntRange.FromInteger(1);
var r3 = IntRange.FromInteger(-1);
Assert.AreEqual(1, r1.Length);
Assert.AreEqual(1, r2.Length);
Assert.AreEqual(1, r2.Length);
Assert.AreEqual(1, r2.Length);
Assert.IsTrue(r1.Touches(r2));
Assert.IsTrue(r2.Touches(r1));
Assert.IsTrue(r1.Touches(r3));
Assert.IsTrue(r3.Touches(r1));
Assert.IsTrue(!r2.Touches(r3));
Assert.IsTrue(!r3.Touches(r2));
Assert.IsFalse(r1.Intersects(r2));
Assert.IsFalse(r2.Intersects(r3));
Assert.IsFalse(r1.Intersects(r3));
Assert.IsFalse(r3.Intersects(r2));
Assert.IsFalse(r3.Intersects(r1));
Assert.IsFalse(r2.Intersects(r1));
}
public void TestMethodShrinkingRange()
{
var rc = new SparseIntRange();
rc.AddInclusive(1, 4);
// rc = [(1,4)] -> [1,2,3,4]
Assert.AreEqual(1, rc.RangeCount);
Assert.IsFalse(rc.Contains(0));
Assert.IsTrue(rc.Contains(1));
Assert.IsTrue(rc.Contains(2));
Assert.IsTrue(rc.Contains(3));
Assert.IsTrue(rc.Contains(4));
Assert.IsFalse(rc.Contains(5));
Assert.AreEqual(4, rc.Count);
Assert.AreEqual(1, rc.Lower);
Assert.AreEqual(4, rc.Upper);
rc.Remove(IntRange.FromInteger(-2));
// rc = [(1,4)] -> [1,2,3,4]
Assert.AreEqual(1, rc.RangeCount);
Assert.IsFalse(rc.Contains(0));
Assert.IsTrue(rc.Contains(1));
Assert.IsTrue(rc.Contains(2));
Assert.IsTrue(rc.Contains(3));
Assert.IsTrue(rc.Contains(4));
Assert.IsFalse(rc.Contains(5));
Assert.AreEqual(4, rc.Count);
Assert.AreEqual(1, rc.Lower);
Assert.AreEqual(4, rc.Upper);
rc.Remove(IntRange.FromInteger(2));
// rc = [(1,1),(3,4)] -> [1,3,4]
Assert.AreEqual(2, rc.RangeCount);
Assert.IsFalse(rc.Contains(0));
Assert.IsTrue(rc.Contains(1));
Assert.IsFalse(rc.Contains(2));
Assert.IsTrue(rc.Contains(3));
Assert.IsTrue(rc.Contains(4));
Assert.IsFalse(rc.Contains(5));
Assert.AreEqual(3, rc.Count);
Assert.AreEqual(1, rc.Lower);
Assert.AreEqual(4, rc.Upper);
rc.RemoveInclusive(3, 4);
// rc = [(1,1)] -> [1]
Assert.AreEqual(1, rc.RangeCount);
Assert.IsFalse(rc.Contains(0));
Assert.IsTrue(rc.Contains(1));
Assert.IsFalse(rc.Contains(2));
Assert.AreEqual(1, rc.Count);
Assert.AreEqual(1, rc.Lower);
Assert.AreEqual(1, rc.Upper);
rc.Remove(1);
// rc = [] -> []
Assert.AreEqual(0, rc.RangeCount);
Assert.IsFalse(rc.Contains(0));
Assert.IsFalse(rc.Contains(1));
Assert.IsFalse(rc.Contains(2));
Assert.AreEqual(0, rc.Count);
}