diff options
Diffstat (limited to 'kamon-core/src/test/scala/kamon/metric/instrument/MinMaxCounterSpec.scala')
-rw-r--r-- | kamon-core/src/test/scala/kamon/metric/instrument/MinMaxCounterSpec.scala | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/kamon-core/src/test/scala/kamon/metric/instrument/MinMaxCounterSpec.scala b/kamon-core/src/test/scala/kamon/metric/instrument/MinMaxCounterSpec.scala new file mode 100644 index 00000000..3de2f385 --- /dev/null +++ b/kamon-core/src/test/scala/kamon/metric/instrument/MinMaxCounterSpec.scala @@ -0,0 +1,90 @@ +/* ========================================================================================= + * Copyright © 2013-2017 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.metric.instrument + +import kamon.metric.Bucket +import kamon.testkit.DefaultInstrumentFactory +import org.scalatest.{Matchers, WordSpec} + +case class TemporalBucket(value: Long, frequency: Long) extends Bucket + +class MinMaxCounterSpec extends WordSpec with Matchers with DefaultInstrumentFactory { + + "a MinMaxCounter" should { + + "track ascending tendencies" in { + val mmCounter = buildMinMaxCounter("track-ascending") + mmCounter.increment() + mmCounter.increment(3) + mmCounter.increment() + + mmCounter.sample() + + val snapshot = mmCounter.snapshot() + + snapshot.distribution.min should be(0) + snapshot.distribution.max should be(5) + } + + "track descending tendencies" in { + val mmCounter = buildMinMaxCounter("track-descending") + mmCounter.increment(5) + mmCounter.decrement() + mmCounter.decrement(3) + mmCounter.decrement() + + mmCounter.sample() + + val snapshot = mmCounter.snapshot() + + snapshot.distribution.min should be(0) + snapshot.distribution.max should be(5) + } + + "reset the min and max to the current value after taking a snapshot" in { + val mmCounter = buildMinMaxCounter("reset-min-max-to-current") + + mmCounter.increment(5) + mmCounter.decrement(3) + + mmCounter.sample() + + val firstSnapshot = mmCounter.snapshot() + + firstSnapshot.distribution.min should be(0) + firstSnapshot.distribution.max should be(5) + + mmCounter.sample() + + val secondSnapshot = mmCounter.snapshot() + + secondSnapshot.distribution.min should be(2) + secondSnapshot.distribution.max should be(2) + } + + "report zero as the min and current values if the current value fell bellow zero" in { + val mmCounter = buildMinMaxCounter("report-zero") + + mmCounter.decrement(3) + + val snapshot = mmCounter.snapshot() + + snapshot.distribution.min should be(0) + snapshot.distribution.max should be(0) + } + } +}
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