1 files changed, 59 insertions, 0 deletions
diff --git a/kamon-core/src/test/scala/kamon/trace/instrumentation/AskPatternTracingSpec.scala b/kamon-core/src/test/scala/kamon/trace/instrumentation/AskPatternTracingSpec.scala
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+++ b/kamon-core/src/test/scala/kamon/trace/instrumentation/AskPatternTracingSpec.scala
@@ -0,0 +1,59 @@
+/* ===================================================
+ * 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.trace.instrumentation
+
+import akka.testkit.TestKit
+import akka.actor.{ Props, Actor, ActorSystem }
+import org.scalatest.{ Matchers, WordSpecLike }
+import akka.event.Logging.Warning
+import scala.concurrent.duration._
+import akka.pattern.ask
+import akka.util.Timeout
+import kamon.trace.{ Trace, ContextAware }
+import org.scalatest.OptionValues._
+
+class AskPatternTracingSpec extends TestKit(ActorSystem("ask-pattern-tracing-spec")) with WordSpecLike with Matchers {
+
+  "the AskPatternTracing" should {
+    "log a warning with a stack trace and TraceContext taken from the moment the ask was triggered" in new TraceContextFixture {
+      implicit val ec = system.dispatcher
+      implicit val timeout = Timeout(10 milliseconds)
+      val noReply = system.actorOf(Props[NoReply])
+      system.eventStream.subscribe(testActor, classOf[Warning])
+
+      within(500 milliseconds) {
+        val initialCtx = Trace.withContext(testTraceContext) {
+          noReply ? "hello"
+          Trace.context()
+        }
+
+        val warn = expectMsgPF() {
+          case warn: Warning if warn.message.toString.contains("Timeout triggered for ask pattern") ⇒ warn
+        }
+        val capturedCtx = warn.asInstanceOf[ContextAware].traceContext
+
+        capturedCtx should be('defined)
+        capturedCtx should equal(initialCtx)
+      }
+    }
+  }
+}
+
+class NoReply extends Actor {
+  def receive = {
+    case any ⇒
+  }
+}