Index: oak-security-spi/src/test/java/org/apache/jackrabbit/oak/spi/security/principal/PrincipalProviderTest.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- oak-security-spi/src/test/java/org/apache/jackrabbit/oak/spi/security/principal/PrincipalProviderTest.java	(revision 1867844)
+++ oak-security-spi/src/test/java/org/apache/jackrabbit/oak/spi/security/principal/PrincipalProviderTest.java	(date 1569940986000)
@@ -16,54 +16,55 @@
  */
 package org.apache.jackrabbit.oak.spi.security.principal;
 
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+
+import java.security.Principal;
+import java.util.Iterator;
+import java.util.Set;
+
 import org.apache.jackrabbit.api.security.principal.PrincipalManager;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.junit.Test;
 
-import java.security.Principal;
-import java.util.Iterator;
-import java.util.Set;
-
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.ArgumentMatchers.anyBoolean;
-import static org.mockito.ArgumentMatchers.anyInt;
-import static org.mockito.ArgumentMatchers.anyString;
-import static org.mockito.Mockito.doCallRealMethod;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-
 public class PrincipalProviderTest {
 
-    private PrincipalProvider pp = mock(PrincipalProvider.class);
+    private PrincipalProvider pp = new PrincipalProvider() {
+        @Override
+        public @Nullable Principal getPrincipal(@NotNull String principalName) {
+            throw new RuntimeException();
+        }
+
+        @Override
+        public @NotNull Set<? extends Principal> getPrincipals(@NotNull String userID) {
+            throw new RuntimeException();
+        }
+
+        @Override
+        public @NotNull Iterator<? extends Principal> findPrincipals(@Nullable String nameHint, int searchType) {
+            throw new RuntimeException();
+        }
+
+        @Override
+        public @NotNull Iterator<? extends Principal> findPrincipals(int searchType) {
+            throw new RuntimeException();
+        }
+    };
 
     @Test
     public void testGetItemBasedPrincipal() {
-        doCallRealMethod().when(pp).getItemBasedPrincipal("/some/path");
         assertNull(pp.getItemBasedPrincipal("/some/path"));
     }
 
-    @Test
-    public void testGetGroupMembership() {
-        Principal p = mock(Principal.class);
-        doCallRealMethod().when(pp).getGroupMembership(p);
-        assertTrue(pp.getGroupMembership(p).isEmpty());
-    }
-
     @Test
     public void testGetMembershipPrincipals() {
-        Principal p = mock(Principal.class);
-        doCallRealMethod().when(pp).getMembershipPrincipals(p);
-        assertTrue(pp.getMembershipPrincipals(p).isEmpty());
+        assertTrue(pp.getMembershipPrincipals(mock(Principal.class)).isEmpty());
     }
-
-
 
     @Test(expected = IllegalArgumentException.class)
     public void testNegativeOffset() {
-        doCallRealMethod().when(pp).findPrincipals("hint", true, PrincipalManager.SEARCH_TYPE_GROUP, -1, 12);
         pp.findPrincipals("hint", true, PrincipalManager.SEARCH_TYPE_GROUP, -1, 12);
     }
 }
\ No newline at end of file