+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+@ExtendWith(MockitoExtension.class)
+// FIXME: This is a sorry-ass of a test. Move the method, DuplicateFinder and this test to yang-data-util and expand
+// coverage using ImmutableNodes.
+class DuplicityTest {
+ @Mock
+ private LeafNode<?> leaf;
+ @Mock
+ private ContainerNode container;
+
+ @Test
+ public void testDuplicateLeaf() {
+ assertEquals(Map.of(), NormalizedNodes.findDuplicates(leaf));
+ }