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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 | 140 |
1 files changed, 0 insertions, 140 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 deleted file mode 100644 index d007d4cd..00000000 --- a/kamon-core/src/test/scala/kamon/metric/instrument/MinMaxCounterSpec.scala +++ /dev/null @@ -1,140 +0,0 @@ -/* ========================================================================================= - * Copyright © 2013-2014 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 java.nio.LongBuffer - -import akka.actor._ -import akka.testkit.TestProbe -import kamon.Kamon -import kamon.metric.instrument.Histogram.{DynamicRange, MutableRecord} -import kamon.testkit.BaseKamonSpec -import scala.concurrent.duration._ - -class MinMaxCounterSpec extends BaseKamonSpec("min-max-counter-spec") { - - "the MinMaxCounter" should { - "track ascending tendencies" in new MinMaxCounterFixture { - mmCounter.increment() - mmCounter.increment(3) - mmCounter.increment() - - val snapshot = collectCounterSnapshot() - - snapshot.min should be(0) - snapshot.max should be(5) - snapshot.recordsIterator.toStream should contain allOf ( - MutableRecord(0, 1), // min - MutableRecord(5, 2) - ) // max and current - } - - "track descending tendencies" in new MinMaxCounterFixture { - mmCounter.increment(5) - mmCounter.decrement() - mmCounter.decrement(3) - mmCounter.decrement() - - val snapshot = collectCounterSnapshot() - - snapshot.min should be(0) - snapshot.max should be(5) - snapshot.recordsIterator.toStream should contain allOf ( - MutableRecord(0, 2), // min and current - MutableRecord(5, 1) - ) // max - } - - "reset the min and max to the current value after taking a snapshot" in new MinMaxCounterFixture { - mmCounter.increment(5) - mmCounter.decrement(3) - - val firstSnapshot = collectCounterSnapshot() - - firstSnapshot.min should be(0) - firstSnapshot.max should be(5) - firstSnapshot.recordsIterator.toStream should contain allOf ( - MutableRecord(0, 1), // min - MutableRecord(2, 1), // current - MutableRecord(5, 1) - ) // max - - val secondSnapshot = collectCounterSnapshot() - - secondSnapshot.min should be(2) - secondSnapshot.max should be(2) - secondSnapshot.recordsIterator.toStream should contain( - MutableRecord(2, 3) - ) // min, max and current - } - - "report zero as the min and current values if the current value fell bellow zero" in new MinMaxCounterFixture { - mmCounter.decrement(3) - - val snapshot = collectCounterSnapshot() - - snapshot.min should be(0) - snapshot.max should be(0) - snapshot.recordsIterator.toStream should contain( - MutableRecord(0, 3) - ) // min, max and current (even while current really is -3 - } - - "never record values bellow zero in very busy situations" in new MinMaxCounterFixture { - val monitor = TestProbe() - val workers = for (workers ← 1 to 50) yield { - system.actorOf(Props(new MinMaxCounterUpdateActor(mmCounter, monitor.ref))) - } - - workers foreach (_ ! "increment") - for (refresh ← 1 to 1000) { - collectCounterSnapshot() - Thread.sleep(1) - } - - monitor.expectNoMsg() - workers foreach (_ ! PoisonPill) - } - } - - trait MinMaxCounterFixture { - val collectionContext = new CollectionContext { - val buffer: LongBuffer = LongBuffer.allocate(64) - } - - val mmCounter = MinMaxCounter(DynamicRange(1, 1000, 2), 1 hour, Kamon.metrics.settings.refreshScheduler) - mmCounter.cleanup // cancel the refresh schedule - - def collectCounterSnapshot(): Histogram.Snapshot = mmCounter.collect(collectionContext) - } -} - -class MinMaxCounterUpdateActor(mmc: MinMaxCounter, monitor: ActorRef) extends Actor { - val x = Array.ofDim[Int](4) - def receive = { - case "increment" ⇒ - mmc.increment() - self ! "decrement" - case "decrement" ⇒ - mmc.decrement() - self ! "increment" - try { - mmc.refreshValues() - } catch { - case _: IndexOutOfBoundsException ⇒ monitor ! "failed" - } - } -}
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