+ String content = ContactMatrix.contactToFloatString(dummyMat);
+ Assert.assertTrue(content.contains("\t1.")); // at least one element must be 1
+ float[][] vals = ContactMatrix.fromFloatStringToContacts(content, sq.getLength(), sq.getLength());
+ assertEquals(vals[3][4],paevals[3][4]);
+ dummyMat.makeGroups(0.5f, false);
+ Assert.assertNotSame(dummyMat.getNewick(), "");