tests: added first test to the common/data package (maven plugin added as well)

common/data/pom.xml

@@ -119,6 +119,24 @@
                     <skip>false</skip>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${surfire.version}</version>
+                <configuration>
+                    <systemPropertyVariables>
+                        <spring.config.name>thingsboard</spring.config.name>
+                    </systemPropertyVariables>
+                    <excludes>
+                        <exclude>**/sql/*Test.java</exclude>
+                        <exclude>**/nosql/*Test.java</exclude>
+                    </excludes>
+                    <includes>
+                        <include>**/*Test.java</include>
+                        <include>**/*TestSuite.java</include>
+                    </includes>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 

common/data/src/test/java/org/thingsboard/server/common/data/id/EntityIdTest.java

@@ -0,0 +1,13 @@
+package org.thingsboard.server.common.data.id;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class EntityIdTest {
+
+    @Test
+    public void givenConstantNullUuid_whenCompare_thenToStringEqualsPredefinedUuid() {
+        Assert.assertEquals("13814000-1dd2-11b2-8080-808080808080", EntityId.NULL_UUID.toString());
+    }
+
+}