Assert.assertNull(mapping);
}
@Test
public void test3() {
TripleCollection tc1 = new SimpleMGraph();
tc1.add(new TripleImpl(u1, u1, u1));
TripleCollection tc2 = new SimpleMGraph();
tc2.add(new TripleImpl(u1, u1, u1));
final Map<BNode, BNode> mapping = GraphMatcher.getValidMapping(tc1, tc2);
Assert.assertNotNull(mapping);
Assert.assertEquals(0, mapping.size());
}