Add missing mockito dependency and fix maven invocation

extensions/wikidata/pom.xml

@@ -163,6 +163,13 @@
       <version>4.12</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-core</artifactId>
+      <version>2.8.9</version>
+      <scope>test</scope>
+    </dependency>
+
 
   </dependencies>
 

refine

@@ -622,10 +622,12 @@ ui_test() {
 }
 
 server_test() {
+    mvn_prepare
     $MVN test -pl main
 }
 
 extensions_test() {
+    mvn_prepare
     $MVN test -pl extensions
 }