fix: Fix test stability issues

microservices-distributed-tracing/order-microservice/src/main/java/com/iluwatar/order/microservice/Main.java

@@ -73,6 +73,11 @@ public class Main {
    * @param args command line args
    */
   public static void main(String[] args) {
-    SpringApplication.run(Main.class, args);
+    var context = SpringApplication.run(Main.class, args);
+    if (args.length > 0 && "test".equals(args[0])) {
+      // Close the context immediately during tests to prevent Tomcat/background threads from
+      // hanging the JVM
+      context.close();
+    }
   }
 }

microservices-distributed-tracing/order-microservice/src/test/java/com/iluwatar/order/microservice/MainTest.java

@@ -32,6 +32,6 @@ import org.junit.jupiter.api.Test;
 class MainTest {
   @Test
   void shouldExecuteApplicationWithoutException() {
-    assertDoesNotThrow(() -> Main.main(new String[] {}));
+    assertDoesNotThrow(() -> Main.main(new String[] {"test"}));
   }
 }

microservices-distributed-tracing/payment-microservice/src/main/java/com/iluwatar/payment/microservice/Main.java

@@ -72,6 +72,11 @@ public class Main {
    * @param args command line args
    */
   public static void main(String[] args) {
-    SpringApplication.run(Main.class, args);
+    var context = SpringApplication.run(Main.class, args);
+    if (args.length > 0 && "test".equals(args[0])) {
+      // Close the context immediately during tests to prevent Tomcat/background threads from
+      // hanging the JVM
+      context.close();
+    }
   }
 }

microservices-distributed-tracing/payment-microservice/src/test/java/com/iluwatar/payment/microservice/MainTest.java

@@ -32,6 +32,6 @@ import org.junit.jupiter.api.Test;
 class MainTest {
   @Test
   void shouldExecuteApplicationWithoutException() {
-    assertDoesNotThrow(() -> Main.main(new String[] {}));
+    assertDoesNotThrow(() -> Main.main(new String[] {"test"}));
   }
 }

microservices-distributed-tracing/product-microservice/src/main/java/com/iluwatar/product/microservice/microservice/Main.java

@@ -72,6 +72,11 @@ public class Main {
    * @param args command line args
    */
   public static void main(String[] args) {
-    SpringApplication.run(Main.class, args);
+    var context = SpringApplication.run(Main.class, args);
+    if (args.length > 0 && "test".equals(args[0])) {
+      // Close the context immediately during tests to prevent Tomcat/background threads from
+      // hanging the JVM
+      context.close();
+    }
   }
 }

microservices-distributed-tracing/product-microservice/src/test/java/com/iluwatar/product/microservice/MainTest.java

@@ -33,6 +33,6 @@ import org.junit.jupiter.api.Test;
 class MainTest {
   @Test
   void shouldExecuteApplicationWithoutException() {
-    assertDoesNotThrow(() -> Main.main(new String[] {}));
+    assertDoesNotThrow(() -> Main.main(new String[] {"test"}));
   }
 }