From cd54e4ed73734dbabebbf22e4fa288c9b047992e Mon Sep 17 00:00:00 2001
From: Ivan Topolnjak <ivantopo@gmail.com>
Date: Thu, 24 Aug 2017 11:23:21 +0200
Subject: introduce the SpanCustomizer API

---
 .../scala/kamon/trace/SpanCustomizerSpec.scala     | 31 ++++++++++++++++++++++
 .../src/test/scala/kamon/trace/TracerSpec.scala    |  7 ++---
 2 files changed, 33 insertions(+), 5 deletions(-)
 create mode 100644 kamon-core-tests/src/test/scala/kamon/trace/SpanCustomizerSpec.scala

(limited to 'kamon-core-tests/src/test/scala/kamon/trace')

diff --git a/kamon-core-tests/src/test/scala/kamon/trace/SpanCustomizerSpec.scala b/kamon-core-tests/src/test/scala/kamon/trace/SpanCustomizerSpec.scala
new file mode 100644
index 00000000..39bd7cd7
--- /dev/null
+++ b/kamon-core-tests/src/test/scala/kamon/trace/SpanCustomizerSpec.scala
@@ -0,0 +1,31 @@
+package kamon.trace
+
+import kamon.Kamon
+import kamon.context.Context
+import kamon.testkit.SpanInspection
+import org.scalatest.{Matchers, WordSpec}
+
+class SpanCustomizerSpec extends WordSpec with Matchers with SpanInspection {
+
+  "a SpanCustomizer" should {
+    "default to a Noop implementation when none is in the context" in {
+      val noopCustomizer = Context.Empty.get(SpanCustomizer.ContextKey)
+      val spanBuilder = noopCustomizer.customize(Kamon.buildSpan("noop"))
+      val span = inspect(spanBuilder.start())
+
+      span.operationName() shouldBe "noop"
+      span.metricTags() shouldBe empty
+      span.spanTags() shouldBe empty
+    }
+
+    "have a simple builder for customizing the operation name" in {
+      val operationNameCustomizer = SpanCustomizer.forOperationName("myCustomOperationName")
+      val spanBuilder = operationNameCustomizer.customize(Kamon.buildSpan("noop"))
+      val span = inspect(spanBuilder.start())
+
+      span.operationName() shouldBe "myCustomOperationName"
+      span.metricTags() shouldBe empty
+      span.spanTags() shouldBe empty
+    }
+  }
+}
diff --git a/kamon-core-tests/src/test/scala/kamon/trace/TracerSpec.scala b/kamon-core-tests/src/test/scala/kamon/trace/TracerSpec.scala
index b398ee98..3ad8a171 100644
--- a/kamon-core-tests/src/test/scala/kamon/trace/TracerSpec.scala
+++ b/kamon-core-tests/src/test/scala/kamon/trace/TracerSpec.scala
@@ -3,11 +3,11 @@ package kamon.trace
 import com.typesafe.config.ConfigFactory
 import kamon.Kamon
 import kamon.context.Context
-import kamon.testkit.{SpanBuilding, SpanInspector}
+import kamon.testkit.{SpanBuilding, SpanInspection}
 import kamon.trace.Span.TagValue
 import org.scalatest.{Matchers, OptionValues, WordSpec}
 
-class TracerSpec extends WordSpec with Matchers with SpanBuilding with OptionValues {
+class TracerSpec extends WordSpec with Matchers with SpanBuilding with SpanInspection with OptionValues {
 
   "the Kamon tracer" should {
     "construct a minimal Span that only has a operation name" in {
@@ -100,7 +100,4 @@ class TracerSpec extends WordSpec with Matchers with SpanBuilding with OptionVal
 
   val tracer: Tracer = Kamon
 
-  def inspect(span: Span): SpanInspector =
-    SpanInspector(span)
-
 }
-- 
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