Group testing modules (#3014)

* move security content from spring-security-rest-full

* swagger update

* move query language to new module

* rename spring-security-rest-full to spring-rest-full

* group persistence modules

* group testing modules

* try fix conflict

testing-modules/testng/src/test/java/com/baeldung/SimpleLongRunningUnitTest.java

@@ -0,0 +1,28 @@
+package com.baeldung;
+
+import org.testng.Assert;
+import org.testng.TestNG;
+import org.testng.annotations.AfterClass;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+
+public class SimpleLongRunningUnitTest extends TestNG {
+    private int number;
+
+    @BeforeClass
+    public void setup() {
+        number = 12;
+    }
+
+    @AfterClass
+    public void tearDown() {
+        number = 0;
+    }
+
+    @Test
+    public void givenNumber_whenEven_thenTrue() {
+        Assert.assertTrue(number % 2 == 0);
+    }
+
+}
+