fix broken tests

src/test/java/it/unibz/inf/isochrone/network/ComparisonTest.java

@@ -16,6 +16,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.SortedSet;
 import java.util.TreeSet;
 
 import org.slf4j.Logger;
@@ -158,12 +159,20 @@ public final class ComparisonTest {
 				LOGGER.debug(" - comparing for isochrone duration: " + params.getDuration());
 				final MemoryOutput o1 = AlgorithmHelper.run(clazz1, params).getOutput();
 				final MemoryOutput o2 = AlgorithmHelper.run(clazz2, params).getOutput();
-				final Collection<Link> l1 = o1.getLinks();
-				final Collection<Link> l2 = o2.getLinks();
-
-				Assert.assertEquals(l1, l2,  n1 + " != " + n2);
+				Assert.assertEquals(getIds(o1.getNodes()), getIds(o2.getNodes()),  "Nodes for class \"" + n1 + "\"" + " != nodes for class \"" + n2 + "\"");
+				Assert.assertEquals(getIds(o1.getLinks()), getIds(o2.getLinks()),  "Links for class \"" + n1 + "\"" + " != links for class \"" + n2 + "\"");
 			}
 			LOGGER.info("-----------------------------");
 		}
 	}
+
+	private static Collection<Integer> getIds(final Collection<? extends NetworkEntity> l1) {
+		final SortedSet<Integer> i1 = new TreeSet<>();
+		for (final NetworkEntity l : l1) {
+			i1.add(l.getId());
+		}
+
+		return i1;
+	}
 }
+