move test app to separate sourceset

Author: SylvainJuge

jmx-scraper/build.gradle.kts

@@ -43,6 +43,11 @@ testing {
   }
 }
 
+sourceSets {
+  create("testApp") {
+  }
+}
+
 tasks {
   shadowJar {
     mergeServiceFiles()
@@ -75,7 +80,7 @@ tasks {
 }
 
 tasks.register<Jar>("appJar") {
-  from(sourceSets.get("integrationTest").output)
+  from(sourceSets.get("testApp").output)
   archiveClassifier.set("app")
   manifest {
     attributes["Main-Class"] = "io.opentelemetry.contrib.jmxscraper.TestApp"

jmx-scraper/src/integrationTest/java/io/opentelemetry/contrib/jmxscraper/TestApp.java renamed to jmx-scraper/src/testApp/java/io/opentelemetry/contrib/jmxscraper/TestApp.java

@@ -9,11 +9,11 @@
 import javax.management.MBeanServer;
 import javax.management.ObjectName;
 
+@SuppressWarnings("all") // for busy wait + stdout
 public class TestApp implements TestAppMXBean {
 
   private volatile boolean running;
 
-  @SuppressWarnings("BusyWait")
   public static void main(String[] args) {
     TestApp app = TestApp.start();
     while (app.isRunning()) {