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package kamon.instrumentation
import kamon.Kamon
import kamon.testkit.MetricInspection
import org.scalatest.{Matchers, WordSpec}
class MetricGroupSpec extends WordSpec with MetricInspection with Matchers {
"a Metric Group" should {
"register metrics with common tags and remove them when cleaning up" in {
val group = new CommonTagsOnly(Map("type" -> "common"))
Counter.valuesForTag("type") should contain only("common")
Gauge.valuesForTag("type") should contain only("common")
Histogram.valuesForTag("type") should contain only("common")
RangeSampler.valuesForTag("type") should contain only("common")
group.cleanup()
Counter.valuesForTag("type") shouldBe empty
Gauge.valuesForTag("type") shouldBe empty
Histogram.valuesForTag("type") shouldBe empty
RangeSampler.valuesForTag("type") shouldBe empty
}
"override common tags with tags supplied to the tag method" in {
val group = new MixedTags(Map("type" -> "basic"))
Counter.valuesForTag("type") should contain only("basic")
Gauge.valuesForTag("type") should contain only("simple")
Histogram.valuesForTag("type") should contain only("tuple")
RangeSampler.valuesForTag("type") should contain only("map")
group.cleanup()
Counter.valuesForTag("type") shouldBe empty
Gauge.valuesForTag("type") shouldBe empty
Histogram.valuesForTag("type") shouldBe empty
RangeSampler.valuesForTag("type") shouldBe empty
}
}
val Counter = Kamon.counter("metric.group.counter")
val Gauge = Kamon.gauge("metric.group.gauge")
val Histogram = Kamon.histogram("metric.group.histogram")
val RangeSampler = Kamon.rangeSampler("metric.group.range-sampler")
class CommonTagsOnly(tags: Map[String, String]) extends MetricGroup(tags) {
val counter = tag(Counter)
val gauge = tag(Gauge)
val histogram = tag(Histogram)
val rangeSampler = tag(RangeSampler)
}
class MixedTags(tags: Map[String, String]) extends MetricGroup(tags) {
val counter = tag(Counter)
val gauge = tag(Gauge, "type", "simple")
val histogram = tag(Histogram, "type" -> "tuple")
val rangeSampler = tag(RangeSampler, Map("type" -> "map"))
}
}
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