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package kamon.metrics.instrument
/* =========================================================================================
* 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.
* =========================================================================================
*/
import org.scalatest.{ Matchers, WordSpecLike }
import kamon.metrics.instruments.counter.MinMaxCounter
class MinMaxCounterSpec extends WordSpecLike with Matchers {
"the MinMaxCounter" should {
"increment" in {
val counter = MinMaxCounter()
counter.increment()
counter.increment()
counter.increment()
counter.increment()
counter.increment()
val (_, _, sum) = counter.collect()
sum should be(5)
}
"decrement" in {
val counter = MinMaxCounter()
counter.increment(5L)
counter.decrement()
counter.decrement()
counter.decrement()
counter.decrement()
counter.decrement()
val (_, _, sum) = counter.collect()
sum should be(0)
}
"reset the min and max with the sum value when the collect method is called" in {
val counter = MinMaxCounter()
counter.increment(10)
counter.increment(20)
counter.increment(30)
counter.increment(40)
counter.increment(50)
counter.collect() //only for check the last value after reset min max
val (min, max, sum) = counter.collect()
min should be(sum)
max should be(sum)
sum should be(150)
}
}
"track the min value" in {
val counter = MinMaxCounter()
counter.increment(10)
counter.increment(20)
counter.increment(30)
counter.increment(40)
counter.increment(50)
val (min, _, _) = counter.collect()
min should be(0)
counter.increment(50)
val (minAfterCollectAndAddSomeValues, _, _) = counter.collect()
minAfterCollectAndAddSomeValues should be(150)
}
"track the max value" in {
val counter = MinMaxCounter()
counter.increment(10)
counter.increment(20)
counter.increment(30)
counter.increment(40)
counter.increment(50)
val (_, max, _) = counter.collect()
max should be(150)
counter.increment(200)
val (_, maxAfterCollectAndAddSomeValues, _) = counter.collect()
maxAfterCollectAndAddSomeValues should be(350)
}
}
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