start writting Span.Real tests

3 files changed, 90 insertions, 0 deletions

diff --git a/kamon-core/src/test/scala/kamon/testkit/Reconfigure.scala b/kamon-core/src/test/scala/kamon/testkit/Reconfigure.scala
new file mode 100644
index 00000000..4b3b2cdb
--- /dev/null
+++ b/kamon-core/src/test/scala/kamon/testkit/Reconfigure.scala
@@ -0,0 +1,26 @@
+package kamon.testkit
+
+import com.typesafe.config.ConfigFactory
+import kamon.Kamon
+
+trait Reconfigure {
+
+  def enableFastSpanFlushing(): Unit = {
+    applyConfig("kamon.trace.tick-interval = 1 millisecond")
+  }
+
+  def sampleAlways(): Unit = {
+    applyConfig("kamon.trace.sampler = always")
+  }
+
+  def sampleNever(): Unit = {
+    applyConfig("kamon.trace.sampler = never")
+  }
+
+  private def applyConfig(configString: String): Unit = {
+    Kamon.reconfigure(ConfigFactory.parseString(configString).withFallback(Kamon.config()))
+  }
+
+
+
+}
diff --git a/kamon-core/src/test/scala/kamon/testkit/TestSpanReporter.scala b/kamon-core/src/test/scala/kamon/testkit/TestSpanReporter.scala
new file mode 100644
index 00000000..8ea2d433
--- /dev/null
+++ b/kamon-core/src/test/scala/kamon/testkit/TestSpanReporter.scala
@@ -0,0 +1,23 @@
+package kamon.testkit
+
+import java.util.concurrent.LinkedBlockingQueue
+
+import com.typesafe.config.Config
+import kamon.SpanReporter
+import kamon.trace.Span
+import kamon.trace.Span.FinishedSpan
+
+class TestSpanReporter() extends SpanReporter {
+  import scala.collection.JavaConverters._
+  private val reportedSpans = new LinkedBlockingQueue[FinishedSpan]()
+
+  override def reportSpans(spans: Seq[Span.FinishedSpan]): Unit =
+    reportedSpans.addAll(spans.asJava)
+
+  def nextSpan(): Option[FinishedSpan] =
+    Option(reportedSpans.poll())
+
+  override def start(): Unit = {}
+  override def stop(): Unit = {}
+  override def reconfigure(config: Config): Unit = {}
+}
diff --git a/kamon-core/src/test/scala/kamon/trace/RealSpanSpec.scala b/kamon-core/src/test/scala/kamon/trace/RealSpanSpec.scala
new file mode 100644
index 00000000..61e651c2
--- /dev/null
+++ b/kamon-core/src/test/scala/kamon/trace/RealSpanSpec.scala
@@ -0,0 +1,41 @@
+package kamon.trace
+
+import kamon.testkit.{Reconfigure, TestSpanReporter}
+import kamon.util.Registration
+import kamon.Kamon
+import org.scalatest.concurrent.Eventually
+import org.scalatest.{BeforeAndAfterAll, Matchers, OptionValues, WordSpec}
+import org.scalatest.time.SpanSugar._
+
+class RealSpanSpec extends WordSpec with Matchers with BeforeAndAfterAll with Eventually with OptionValues with Reconfigure {
+
+  "a real span" when {
+    "sampled" should {
+      "be sent to the Span reporters" in {
+
+        Kamon.buildSpan("test-span")
+          .withSpanTag("test", "value")
+          .start()
+          .finish()
+
+        eventually(timeout(50 milliseconds)) {
+          val finishedSpan = reporter.nextSpan().value
+          finishedSpan.operationName shouldBe("test-span")
+        }
+      }
+    }
+  }
+
+  @volatile var registration: Registration = _
+  val reporter = new TestSpanReporter()
+
+  override protected def beforeAll(): Unit = {
+    enableFastSpanFlushing()
+    sampleAlways()
+    registration = Kamon.addReporter(reporter)
+  }
+
+  override protected def afterAll(): Unit = {
+    registration.cancel()
+  }
+}