1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/*
* =========================================================================================
* Copyright © 2013 the kamon project <http://kamon.io/>
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language governing permissions
* and limitations under the License.
* =========================================================================================
*/
package kamon.metrics
import org.scalatest.{ Matchers, WordSpec }
import kamon.metrics.MetricSnapshot.Measurement
class MetricSnapshotSpec extends WordSpec with Matchers {
"a metric snapshot" should {
"support a max operation" in new SnapshotFixtures {
snapshotA.max should be(17)
snapshotB.max should be(10)
snapshotC.max should be(1)
}
"support a min operation" in new SnapshotFixtures {
snapshotA.min should be(1)
snapshotB.min should be(2)
snapshotC.min should be(1)
}
"be able to merge with other snapshot" in new SnapshotFixtures {
val merged = snapshotA.merge(snapshotB).merge(snapshotC)
merged.min should be(1)
merged.max should be(17)
merged.numberOfMeasurements should be(300)
merged.measurements.map(_.value) should contain inOrderOnly (1, 2, 4, 5, 7, 10, 17)
}
"be able to merge with empty snapshots" in new SnapshotFixtures {
snapshotA.merge(emptySnapshot) should be(snapshotA)
emptySnapshot.merge(snapshotA).merge(emptySnapshot) should be(snapshotA)
snapshotC.merge(emptySnapshot) should be(snapshotC)
}
}
trait SnapshotFixtures {
val emptySnapshot = MetricSnapshot(InstrumentTypes.Histogram, 0, Scale.Unit, Vector.empty)
val snapshotA = MetricSnapshot(InstrumentTypes.Histogram, 100, Scale.Unit, Vector(
Measurement(1, 3),
Measurement(2, 15),
Measurement(5, 68),
Measurement(7, 13),
Measurement(17, 1)))
val snapshotB = MetricSnapshot(InstrumentTypes.Histogram, 100, Scale.Unit, Vector(
Measurement(2, 6),
Measurement(4, 48),
Measurement(5, 39),
Measurement(10, 7)))
val snapshotC = MetricSnapshot(InstrumentTypes.Counter, 100, Scale.Unit, Vector(Measurement(1, 100)))
}
}
|
