public void TestT0()
{
var hs = new HagelSource();
var first = hs.Monotonic(now: hs.Start);
Assert.IsTrue(first.All(c => c == hs.Alphabet[0]));
}
public void TestBase()
{
Assert.AreEqual("09", HagelSource.Base(9, "0123456789ABCDEF", 2));
Assert.AreEqual("0D", HagelSource.Base(13, "0123456789ABCDEF", 2));
Assert.AreEqual("10", HagelSource.Base(16, "0123456789ABCDEF", 2));
Assert.AreEqual("100", HagelSource.Base(256, "0123456789ABCDEF", 2));
}
public void TestEquivalence()
{
var hs = new HagelSource();
var now = DateTime.Now;
string hs_monotonic = hs.Monotonic(now);
string hs_hagelkorn = HagelSource.Monotonic(now: now);
Assert.AreEqual(hs_monotonic, hs_hagelkorn);
}
public void TestTOverflow()
{
var hs = new HagelSource();
var overflow = hs.Monotonic(now: hs.End);
Assert.AreEqual(hs.Digits + 1, overflow.Length);
string expected = hs.Alphabet[1].ToString() + new string(hs.Alphabet[0], hs.Digits);
Assert.AreEqual(expected, overflow);
}
public void TestConstructor()
{
var hs = new HagelSource(overflow_years: 42);
Assert.AreEqual((hs.End - hs.Start).TotalSeconds, hs.TotalSeconds);
Assert.AreEqual(42 * 31536000, hs.TotalSeconds);
Assert.AreEqual(hs.Alphabet.Length, hs.B);
Assert.AreEqual(hs.Combinations, Math.Pow(hs.B, hs.Digits));
Assert.AreEqual(hs.Resolution, hs.TotalSeconds / hs.Combinations);
}
public void TestRandom()
{
HashSet <string> ids = new HashSet <string>();
for (int i = 0; i < 100; i++)
{
ids.Add(HagelSource.Random());
}
Assert.AreEqual(100, ids.Count);
}
public void TestMonotonic()
{
var hs = new HagelSource(
resolution: Resolution.Days,
alphabet: "0123456789",
start: new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Utc),
overflow_years: 1);
var id = hs.Monotonic(now: new DateTime(2018, 12, 31, 23, 59, 59, DateTimeKind.Utc));
Assert.AreEqual(hs.Digits, id.Length);
Assert.AreEqual("999", id);
}
public void TestMonotonic()
{
string id = HagelSource.Monotonic(
resolution: Resolution.Days,
now: new DateTime(2018, 12, 31, 23, 59, 59, DateTimeKind.Utc),
alphabet: "0123456789",
start: new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Utc),
overflow_years: 1
);
Assert.AreEqual("999", id);
}
public void TestKeyLength()
{
(int D1, long K1, double T1) = HagelSource.KeyLength(
overflow_years: 1,
resolution: Resolution.Days,
B: 10);
Assert.AreEqual(3, D1);
Assert.AreEqual(Math.Pow(10, D1), K1);
Assert.AreEqual(3, D1);
Assert.IsTrue(T1 < Resolution.Days);
(int D2, long K2, double T2) = HagelSource.KeyLength(
overflow_years: 30,
resolution: Resolution.Days,
B: 27);
Assert.AreEqual(Math.Pow(27, D2), K2);
Assert.IsTrue(T2 < Resolution.Days);
}
