void Snippets2()
{
#region SubtractCollection
var nz = TimeSpan.FromHours(12);
var availability =
new TimeRange(new DateTimeOffset(2013, 8, 13, 9, 0, 0, nz), TimeSpan.FromHours(3)); // 0900 - 1200
var busy = new TimeRange[]
{
new TimeRange(new DateTimeOffset(2013, 8, 13, 9, 0, 0, nz), TimeSpan.FromMinutes(30)), // 0900 - 0930
new TimeRange(new DateTimeOffset(2013, 8, 13, 9, 0, 0, nz), TimeSpan.FromHours(1)), // 0900 - 1000
new TimeRange(new DateTimeOffset(2013, 8, 13, 11, 15, 0, nz), TimeSpan.FromMinutes(15)), // 1115 - 1130
};
var free = availability.Subtract(busy);
foreach (var t in free)
Console.WriteLine(t);
// Produces the following free time
// 13 Aug 2013 10:00:00 a.m. +12:00 for 01:15:00
// 13 Aug 2013 11:30:00 a.m. +12:00 for 00:30:00
#endregion
}
public void SubtractingAgain()
{
var nz = TimeSpan.FromHours(12);
var duration = TimeSpan.FromMinutes(1);
var a = new DateTimeOffset(2013, 8, 13, 9, 0, 0, nz);
var b = a + duration;
var c = b + duration;
var d = c + duration;
var e = d + duration;
var f = e + duration;
var g = f + duration;
var h = g + duration;
var availability = new TimeRange(c, f);
var free = availability.Subtract(new TimeRange(a, b)).ToArray();
Assert.AreEqual(1, free.Length);
Assert.AreEqual(availability, free[0]);
free = availability.Subtract(new TimeRange(b, c)).ToArray();
Assert.AreEqual(1, free.Length);
Assert.AreEqual(availability, free[0]);
free = availability.Subtract(new TimeRange(f, g)).ToArray();
Assert.AreEqual(1, free.Length);
Assert.AreEqual(availability, free[0]);
free = availability.Subtract(new TimeRange(g, h)).ToArray();
Assert.AreEqual(1, free.Length);
Assert.AreEqual(availability, free[0]);
free = availability.Subtract(new TimeRange(b, g)).ToArray();
Assert.AreEqual(0, free.Length);
free = availability.Subtract(new TimeRange(d, e)).ToArray();
Assert.AreEqual(2, free.Length);
Assert.AreEqual(new TimeRange(c, d), free[0]);
Assert.AreEqual(new TimeRange(e, f), free[1]);
free = availability.Subtract(new TimeRange(b, d)).ToArray(); // fails
Assert.AreEqual(1, free.Length);
Assert.AreEqual(new TimeRange(d, f), free[0]);
free = availability.Subtract(new TimeRange(e, g)).ToArray();
Assert.AreEqual(1, free.Length);
Assert.AreEqual(new TimeRange(c, e), free[0]);
free = availability.Subtract(availability).ToArray();
Assert.AreEqual(0, free.Length);
free = availability.Subtract(new TimeRange(c, d)).ToArray();
Assert.AreEqual(1, free.Length);
Assert.AreEqual(new TimeRange(d, f), free[0]);
free = availability.Subtract(new TimeRange(e, f)).ToArray();
Assert.AreEqual(1, free.Length);
Assert.AreEqual(new TimeRange(c, e), free[0]);
}
public void Subtracting()
{
var now = new DateTimeOffset(2013, 8, 13, 13, 0, 0, TimeSpan.FromHours(12));
var tick = new TimeSpan(1);
var time = new TimeRange(now, now.AddHours(1));
var before = new TimeRange(now - TimeSpan.FromHours(1), time.StartsOn);
var after = new TimeRange(time.EndsOn, TimeSpan.FromHours(1));
var mid = new TimeRange(now.AddMinutes(15), TimeSpan.FromMinutes(30));
// No intersection
Assert.AreEqual(1, time.Subtract(before).Count());
Assert.AreEqual(time, time.Subtract(before).First());
Assert.AreEqual(1, time.Subtract(after).Count());
Assert.AreEqual(time, time.Subtract(after).First());
// Identity
Assert.AreEqual(0, time.Subtract(time).Count());
// Subsumes
Assert.AreEqual(0, time.Subtract(new TimeRange(before.StartsOn, after.EndsOn)).Count());
// Middle
Assert.AreEqual(2, time.Subtract(mid).Count());
Assert.IsTrue(time.Subtract(mid).Any(t => t.StartsOn == now && t.Duration == TimeSpan.FromMinutes(15)));
Assert.IsTrue(time.Subtract(mid).Any(t => t.StartsOn == now.AddMinutes(45) && t.Duration == TimeSpan.FromMinutes(15)));
}