Fix sudden bug in tests

gfsBackendService/src/test/java/org/eclipse/openk/gridfailureinformation/service/ImportServiceTest.java

diff --git a/gfsBackendService/src/test/java/org/eclipse/openk/gridfailureinformation/service/ImportServiceTest.java b/gfsBackendService/src/test/java/org/eclipse/openk/gridfailureinformation/service/ImportServiceTest.java
index 9f02457..d962994 100644
--- a/gfsBackendService/src/test/java/org/eclipse/openk/gridfailureinformation/service/ImportServiceTest.java
+++ b/gfsBackendService/src/test/java/org/eclipse/openk/gridfailureinformation/service/ImportServiceTest.java
@@ -80,12 +80,13 @@
     private ProcessHelper processHelper;
 
     @Test
-    public void shouldImportDifferentRadiiProperly() throws Exception {
+    void shouldImportDifferentRadiiProperly() throws Exception {
         List<RadiusDto> radiusDtos = getRadiusDtoList();
 
         FailureInformationDto failureInformationDto = MockDataHelper.mockFailureInformationDto();
 
         when(radiusService.getRadii()).thenReturn(radiusDtos);
+        Whitebox.setInternalState(importService, "radiusService", radiusService); // don't know why this is needed suddenly
 
         Whitebox.invokeMethod(importService, "importRadius", 10L, failureInformationDto);
         assertEquals(radiusDtos.get(0).getUuid(), failureInformationDto.getRadiusId());