1 files changed, 67 insertions, 0 deletions
diff --git a/kamon-core/src/test/scala/kamon/instrumentation/akka/AskPatternInstrumentationSpec.scala b/kamon-core/src/test/scala/kamon/instrumentation/akka/AskPatternInstrumentationSpec.scala
new file mode 100644
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+++ b/kamon-core/src/test/scala/kamon/instrumentation/akka/AskPatternInstrumentationSpec.scala
@@ -0,0 +1,67 @@
+/*
+ * =========================================================================================
+ * 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.instrumentation.akka
+
+import akka.actor.{ Actor, ActorSystem, Props }
+import akka.event.Logging.Warning
+import akka.pattern.ask
+import akka.testkit.TestKitBase
+import akka.util.Timeout
+import com.typesafe.config.ConfigFactory
+import kamon.trace.{ TraceContextAware, TraceRecorder }
+import org.scalatest.{ Matchers, WordSpecLike }
+
+import scala.concurrent.duration._
+
+class AskPatternInstrumentationSpec extends TestKitBase with WordSpecLike with Matchers {
+  implicit lazy val system: ActorSystem = ActorSystem("ask-pattern-tracing-spec", ConfigFactory.parseString(
+    """
+      |kamon {
+      |  trace {
+      |    ask-pattern-tracing = on
+      |  }
+      |}
+    """.stripMargin))
+
+  "the AskPatternTracing" should {
+    "log a warning with a stack trace and TraceContext taken from the moment the ask was triggered" in {
+      implicit val ec = system.dispatcher
+      implicit val timeout = Timeout(10 milliseconds)
+      val noReply = system.actorOf(Props[NoReply])
+      system.eventStream.subscribe(testActor, classOf[Warning])
+
+      val testTraceContext = TraceRecorder.withNewTraceContext("ask-timeout-warning") {
+        noReply ? "hello"
+        TraceRecorder.currentContext
+      }
+
+      val warn = expectMsgPF() {
+        case warn: Warning if warn.message.toString.contains("Timeout triggered for ask pattern") ⇒ warn
+      }
+      val capturedCtx = warn.asInstanceOf[TraceContextAware].traceContext
+
+      capturedCtx should be('defined)
+      capturedCtx should equal(testTraceContext)
+    }
+  }
+}
+
+class NoReply extends Actor {
+  def receive = {
+    case any ⇒
+  }
+}