add test

sdk/testing/build.gradle.kts

@@ -20,4 +20,5 @@ dependencies {
 
   testImplementation("junit:junit")
   testImplementation("org.junit.vintage:junit-vintage-engine")
+  testImplementation(project(":sdk-extensions:autoconfigure"))
 }

sdk/testing/src/main/java/io/opentelemetry/sdk/testing/sdk/AutoConfiguredOpenTelemetryTesting.java

@@ -29,7 +29,7 @@ public static AutoConfiguredOpenTelemetryTesting create(Map<String, String> prop
     return new AutoConfiguredOpenTelemetryTesting(getOpenTelemetrySdk(properties));
   }
 
-  public AutoConfiguredOpenTelemetryTesting(OpenTelemetryTestSdk sdk) {
+  private AutoConfiguredOpenTelemetryTesting(OpenTelemetryTestSdk sdk) {
     super(sdk);
   }
 

sdk/testing/src/test/java/io/opentelemetry/sdk/testing/sdk/AutoConfiguredOpenTelemetryTestingTest.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.sdk.testing.sdk;
+
+import io.opentelemetry.api.common.AttributeKey;
+import java.util.Collections;
+import org.junit.jupiter.api.Test;
+
+class AutoConfiguredOpenTelemetryTestingTest {
+
+  @Test
+  void sdkEnabled() {
+    AutoConfiguredOpenTelemetryTesting testing =
+        AutoConfiguredOpenTelemetryTesting.create(Collections.emptyMap());
+    testing.getOpenTelemetry().getTracer("test").spanBuilder("test").startSpan().end();
+    testing.assertTraces(trace -> trace.hasSize(1));
+  }
+
+  @Test
+  void resourceAttributes() {
+    AutoConfiguredOpenTelemetryTesting testing =
+        AutoConfiguredOpenTelemetryTesting.create(
+            Collections.singletonMap("otel.resource.attributes", "foo=bar"));
+    testing.getOpenTelemetry().getTracer("test").spanBuilder("test").startSpan().end();
+    testing.assertTraces(
+        trace ->
+            trace.hasSpansSatisfyingExactly(
+                span ->
+                    span.hasResourceSatisfying(
+                        resource -> resource.hasAttribute(AttributeKey.stringKey("foo"), "bar"))));
+  }
+}