public void CreateId_Throws_OnTimestampWraparound()
{
var ts = new MockTimeSource(long.MaxValue); // Set clock to 1 'tick' before wraparound
var g = new IdGenerator(0, new IdGeneratorOptions(timeSource: ts));
Assert.IsTrue(g.CreateId() > 0); // Should succeed;
ts.NextTick();
g.CreateId(); // Should fail
}
public void TryCreateId_Returns_False_OnTimestampWraparound()
{
var ts = new MockTimeSource(long.MaxValue); // Set clock to 1 'tick' before wraparound
var g = new IdGenerator(0, new IdGeneratorOptions(timeSource: ts));
Assert.IsTrue(g.TryCreateId(out var _)); // Should succeed;
ts.NextTick();
Assert.IsFalse(g.TryCreateId(out var _)); // Should fail
}
public void Constructor_Throws_OnTimestampWraparound()
{
var m = MaskConfig.Default;
var ts = new MockTimeSource(long.MaxValue); // Set clock to 1 'tick' before wraparound
var g = new IdGenerator(0, TESTEPOCH, m, ts);
Assert.IsTrue(g.CreateId() > 0); // Should succeed;
ts.NextTick();
g.CreateId(); // Should fail
}
public void Constructor_Throws_OnTimestampWraparound()
{
var mc = MaskConfig.Default;
var ts = new MockTimeSource(mc.WraparoundDate(TESTEPOCH).AddMilliseconds(-1)); //Set clock to 1 ms before epoch
var g = new IdGenerator(0, TESTEPOCH, MaskConfig.Default, ts);
Assert.IsTrue(g.CreateId() > 0); //Should succeed;
ts.NextTick();
g.CreateId(); //Should fail
}
public void Constructor_Throws_OnTimestampWraparound()
{
var mc = MaskConfig.Default;
var ts = new MockTimeSource(mc.WraparoundDate(TESTEPOCH).AddMilliseconds(-1)); //Set clock to 1 ms before epoch
var g = new IdGenerator(0, TESTEPOCH, MaskConfig.Default, ts);
Assert.IsTrue(g.CreateId() > 0); //Should succeed;
ts.NextTick();
g.CreateId(); //Should fail
}
public void Sequence_ShouldReset_EveryNewTick()
{
// We setup our generator so that the time is 0, generator id 0 and we're only left with the sequence
// increasing each invocation of CreateId();
var ts = new MockTimeSource(0);
var g = new IdGenerator(0, new IdGeneratorOptions(timeSource: ts));
Assert.AreEqual(0, g.CreateId());
Assert.AreEqual(1, g.CreateId());
ts.NextTick();
// Since the timestamp has increased, we should now have a much higher value (since the timestamp is
// shifted left a number of bits (specifically GeneratorIdBits + SequenceBits)
Assert.AreEqual((1 << (g.Options.IdStructure.GeneratorIdBits + g.Options.IdStructure.SequenceBits)) + 0, g.CreateId());
Assert.AreEqual((1 << (g.Options.IdStructure.GeneratorIdBits + g.Options.IdStructure.SequenceBits)) + 1, g.CreateId());
}
public void Sequence_ShouldReset_EveryNewTick()
{
// We setup our generator so that the time (current - epoch) results in 0, generator id 0 and we're only
// left with the sequence increasing each invocation of CreateId();
var ts = new MockTimeSource(TESTEPOCH);
var m = MaskConfig.Default;
var g = new IdGenerator(0, TESTEPOCH, m, ts);
Assert.AreEqual(0, g.CreateId());
Assert.AreEqual(1, g.CreateId());
ts.NextTick();
// Since the timestamp has increased, we should now have a much higher value (since the timestamp is shifted
// left a number of bits (specifically GeneratorIdBits + SequenceBits)
Assert.AreEqual((1 << (m.GeneratorIdBits + m.SequenceBits)) + 0, g.CreateId());
Assert.AreEqual((1 << (m.GeneratorIdBits + m.SequenceBits)) + 1, g.CreateId());
}
public void Sequence_ShouldReset_EveryNewTick()
{
// We setup our generator so that the time (current - epoch) results in 0, generator id 0 and we're only
// left with the sequence increasing each invocation of CreateId();
var ts = new MockTimeSource(TESTEPOCH);
var m = MaskConfig.Default;
var g = new IdGenerator(0, TESTEPOCH, m, ts);
Assert.AreEqual(0, g.CreateId());
Assert.AreEqual(1, g.CreateId());
ts.NextTick();
// Since the timestamp has increased, we should now have a much higher value (since the timestamp is shifted
// left a number of bits (specifically GeneratorIdBits + SequenceBits)
Assert.AreEqual((1 << (m.GeneratorIdBits + m.SequenceBits)) + 0, g.CreateId());
Assert.AreEqual((1 << (m.GeneratorIdBits + m.SequenceBits)) + 1, g.CreateId());
}