Fix weakness causing NPE

Change-Id: I1f6bfa75990082dc411d813528702cc3cc140f5c
Issue-ID: CLAMP-193
Signed-off-by: Gabriel <adam.krysiak@nokia.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/test/java/org/onap/clamp/clds/it/SdcCatalogServicesItCase.java b/src/test/java/org/onap/clamp/clds/it/SdcCatalogServicesItCase.java
index 4a13c62aa..330ee6056 100644
--- a/src/test/java/org/onap/clamp/clds/it/SdcCatalogServicesItCase.java
+++ b/src/test/java/org/onap/clamp/clds/it/SdcCatalogServicesItCase.java
@@ -17,14 +17,17 @@
  * See the License for the specific language governing permissions and 
  * limitations under the License.
  * ============LICENSE_END============================================
+ * Modifications copyright (c) 2018 Nokia
  * ===================================================================
  * 
  */
 
 package org.onap.clamp.clds.it;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.Assert.assertTrue;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -170,6 +173,23 @@ public class SdcCatalogServicesItCase {
         assertTrue("1.0".equals(res2.getVersion()));
     }
 
+
+    @Test
+    public void removeDuplicateSdcFunctionShouldNotReturnNull(){
+        // given
+        SdcCatalogServices catalogServices = new SdcCatalogServices();
+
+        // when
+        List<SdcResourceBasicInfo> firstResult = catalogServices
+            .removeDuplicateSdcResourceBasicInfo(null);
+        List<SdcResourceBasicInfo> secondResult = catalogServices
+            .removeDuplicateSdcResourceBasicInfo(new ArrayList<>());
+
+        // then
+        assertThat(firstResult).isEmpty();
+        assertThat(secondResult).isEmpty();
+    }
+
     @Test
     public void getServiceUuidFromServiceInvariantIdTest() throws Exception {
         SdcCatalogServices spy = Mockito.spy(sdcCatalogWired);