Moved the testcase to core-java-jvm module

core-java-modules/core-java-jvm/src/test/java/com/baeldung/error/oom/ExecutorServiceUnitTest.java

@@ -12,7 +12,7 @@ import java.util.stream.IntStream;
 
 import org.junit.jupiter.api.Test;
 
-public class TestExecutorService {
+public class ExecutorServiceUnitTest {
 
     @Test
     public void givenAnExecutorService_WhenMoreTasksSubmitted_ThenAdditionalTasksWait() {
@@ -34,6 +34,22 @@ public class TestExecutorService {
             .forEach(i -> executorService.submit(runnableTask));
 
         // Then
-        assertThat(((ThreadPoolExecutor )executorService).getQueue().size(), is(equalTo(5)));
+        assertThat(((ThreadPoolExecutor) executorService).getQueue()
+            .size(), is(equalTo(5)));
+    }
+
+    @Test
+    public void givenAnExecutorService() throws Exception {
+
+        while (true) {
+            TimeUnit.SECONDS.sleep(5);
+            new Thread(() -> {
+                try {
+                    TimeUnit.HOURS.sleep(1);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }).start();
+        }
     }
 }