test: add full url testing to showcase

Author: diegomarquezp

sdk-platform-java/java-showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITOtelTracing.java

@@ -72,6 +72,7 @@ class ITOtelTracing {
   private static final long SHOWCASE_SERVER_PORT = 7469;
   private static final String SHOWCASE_REPO = "googleapis/sdk-platform-java";
   private static final String SHOWCASE_ARTIFACT = "com.google.cloud:gapic-showcase";
+  private static final String SHOWCASE_USER_URL = "http://localhost:7469/v1beta1/users/";
 
   private InMemorySpanExporter spanExporter;
   private OpenTelemetrySdk openTelemetrySdk;
@@ -231,6 +232,11 @@ void testTracing_successfulIdentityGetUser_httpjson() throws Exception {
                   .getAttributes()
                   .get(AttributeKey.stringKey(ObservabilityAttributes.HTTP_URL_TEMPLATE_ATTRIBUTE)))
           .isEqualTo("v1beta1/{name=users/*}");
+      assertThat(
+              attemptSpan
+                  .getAttributes()
+                  .get(AttributeKey.stringKey(ObservabilityAttributes.HTTP_URL_FULL_ATTRIBUTE)))
+          .isEqualTo(SHOWCASE_USER_URL + "test-user");
       assertThat(
               attemptSpan
                   .getAttributes()