From 0c0ffa5d938bcbd26e1315437f7e43aae8a1f2d8 Mon Sep 17 00:00:00 2001
From: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>
Date: Thu, 14 Aug 2025 16:57:40 +0200
Subject: [PATCH] don't add the test exporters for users that don't use the
 library test runner

---
 .../testing/provider/TestExporterCustomizerProvider.java      | 4 ++++
 .../testing/provider/TestSpanExporterComponentProvider.java   | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestExporterCustomizerProvider.java b/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestExporterCustomizerProvider.java
index 8ceb11bace85..cc29c93af778 100644
--- a/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestExporterCustomizerProvider.java
+++ b/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestExporterCustomizerProvider.java
@@ -28,6 +28,10 @@
 public class TestExporterCustomizerProvider implements DeclarativeConfigurationCustomizerProvider {
   @Override
   public void customize(DeclarativeConfigurationCustomizer customizer) {
+    if (TestSpanExporterComponentProvider.getSpanExporter() == null) {
+      // library test runner is not used, so we should not add the test exporters
+      return;
+    }
     customizer.addModelCustomizer(
         model -> {
           if (model.getTracerProvider() == null) {
diff --git a/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestSpanExporterComponentProvider.java b/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestSpanExporterComponentProvider.java
index 4f5d64df592a..a6ee9b91cc3d 100644
--- a/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestSpanExporterComponentProvider.java
+++ b/testing-common/src/main/java/io/opentelemetry/instrumentation/testing/provider/TestSpanExporterComponentProvider.java
@@ -29,6 +29,10 @@ public SpanExporter create(DeclarativeConfigProperties config) {
     return Objects.requireNonNull(spanExporter, "spanExporter must not be null");
   }
 
+  public static SpanExporter getSpanExporter() {
+    return spanExporter;
+  }
+
   public static void setSpanExporter(SpanExporter spanExporter) {
     TestSpanExporterComponentProvider.spanExporter = spanExporter;
   }