allow test mode with jmx scraper container

Author: SylvainJuge

jmx-scraper/src/integrationTest/java/io/opentelemetry/contrib/jmxscraper/JmxScraperContainer.java

@@ -28,6 +28,7 @@ public class JmxScraperContainer extends GenericContainer<JmxScraperContainer> {
   private String user;
   private String password;
   private final List<String> extraJars;
+  private boolean testJmx;
 
   public JmxScraperContainer(String otlpEndpoint, String baseImage) {
     super(baseImage);
@@ -108,6 +109,12 @@ public JmxScraperContainer withCustomYaml(String yamlPath) {
     return this;
   }
 
+  @CanIgnoreReturnValue
+  public JmxScraperContainer withTestJmx() {
+    this.testJmx = true;
+    return this;
+  }
+
   @Override
   public void start() {
     // for now only configure through JVM args
@@ -152,6 +159,10 @@ public void start() {
       arguments.add("io.opentelemetry.contrib.jmxscraper.JmxScraper");
     }
 
+    if(testJmx) {
+      arguments.add("-test");
+    }
+
     this.withCommand(arguments.toArray(new String[0]));
 
     logger().info("Starting scraper with command: " + String.join(" ", arguments));