Update to Mockito 3

Issue gh-611

Author: jzheaux

core/src/test/java/org/springframework/ldap/core/LdapTemplateTest.java

@@ -21,6 +21,8 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.ArgumentCaptor;
+import org.mockito.ArgumentMatcher;
+
 import org.springframework.LdapDataEntry;
 import org.springframework.dao.EmptyResultDataAccessException;
 import org.springframework.dao.IncorrectResultSizeDataAccessException;
@@ -1858,17 +1860,17 @@ private SearchControls searchControlsOneLevel() {
 		return controls;
 	}
 
-    private static class SearchControlsMatcher extends BaseMatcher<SearchControls> {
+    private static class SearchControlsMatcher implements ArgumentMatcher<SearchControls> {
         private final SearchControls controls;
 
         public SearchControlsMatcher(SearchControls controls) {
             this.controls = controls;
         }
 
-        @Override
-        public boolean matches(Object item) {
+		@Override
+		public boolean matches(SearchControls item) {
             if (item instanceof SearchControls) {
-                SearchControls s1 = (SearchControls) item;
+                SearchControls s1 = item;
 
                 return controls.getSearchScope() == s1.getSearchScope()
                         && controls.getReturningObjFlag() == s1.getReturningObjFlag()
@@ -1881,10 +1883,5 @@ public boolean matches(Object item) {
                 throw new IllegalArgumentException();
             }
         }
-
-        @Override
-        public void describeTo(Description description) {
-            description.appendText("SearchControls matches");
-        }
     }
 }