public void CircularDataSink_CanProvideASnapshotOfDataAfterSomeCutoff()
{
var config = new SinkElement("id", "testData", 10, float.MinValue, float.MaxValue);
var sink = new CircularDataSink(config);
var snapshot = new Snapshot { new MetricData(10, DateTime.Parse("7 Feb 2013"), new List<string> { "value" }), new MetricData(20, DateTime.Parse("9 Feb 2013"), new List<string> { "value" }) };
sink.Update(snapshot);
var actual = sink.Snapshot(DateTime.Parse("8 Feb 2013"));
Assert.AreEqual(1, actual.Count());
Assert.AreEqual(20, actual.First().Data[0]);
}
public void CircularDataSink_CanBeReset()
{
var config = new SinkElement("id", "testData", 10, float.MinValue, float.MaxValue);
var sink = new CircularDataSink(config);
var snapshot = new Snapshot { new MetricData(10, DateTime.Now.AddMinutes(-2), new List<string> { "value" }), new MetricData(20, DateTime.Now.AddMinutes(-1), new List<string> { "value" }) };
sink.Update(snapshot);
var actual = sink.Snapshot();
Assert.AreEqual(2, actual.Count());
Assert.AreEqual(10, actual.First().Data[0]);
snapshot = new Snapshot { new MetricData(20, DateTime.Now, new List<string> { "value" }) };
sink.ResetWith(snapshot);
actual = sink.Snapshot();
Assert.AreEqual(1, actual.Count());
Assert.AreEqual(20, actual.First().Data[0]);
}
public void CircularDataSink_WarnsWhenStructureOfDataHasChanged()
{
var config = new SinkElement("id", "testData", 10, float.MinValue, float.MaxValue);
var sink = new CircularDataSink(config);
var snapshot = new Snapshot { new MetricData(10, DateTime.Now.AddMinutes(-1), new List<string> { "value" }) };
sink.Update(snapshot);
snapshot = new Snapshot { new MetricData(10, DateTime.Now, new List<string> { "value", "some extra value" }) };
sink.Update(snapshot);
}
public void CircularDataSink_IgnoreDataOlderThanMostRecentLastUpdate()
{
var config = new SinkElement("id", "testData", 10, float.MinValue, float.MaxValue);
var sink = new CircularDataSink(config);
sink.Update(new Snapshot
{
new MetricData( 1.0, DateTime.Now, new List<string> { "value" }),
new MetricData( 2.0, DateTime.Now.AddMinutes(5), new List<string> { "value" }),
new MetricData( 4.0, DateTime.Now.AddMinutes(10), new List<string> { "value" }),
new MetricData( 1.0, DateTime.Now.AddMinutes(5), new List<string> { "value" })
});
var snapshot = sink.Snapshot();
var total = 0.0d;
foreach (var dataPoint in snapshot)
{
total += dataPoint.Data[0].Value;
}
Assert.AreEqual(7.0d, total);
}
