diff --git a/tests/test_validate_network.py b/tests/test_validate_network.py
index 95a9362..4d108d3 100644
--- a/tests/test_validate_network.py
+++ b/tests/test_validate_network.py
@@ -114,6 +114,26 @@ class ValidationTests(unittest.TestCase):
         with self.assertRaisesRegex(ValueError,'unsupported conduit shape'):
             self.run_case(fixture(text),text)
 
+    def test_coordinate_roundoff_inside_tolerance_passes(self):
+        data=fixture();data['nodes'][1]['xy'][0]+=0.0000005
+        data['links'][0]['pathXY'][1][0]+=0.0000005
+        self.assertEqual(self.run_case(data)['status'],'passed')
+
+    def test_coordinate_change_outside_tolerance_fails(self):
+        data=fixture();data['nodes'][1]['xy'][0]+=0.000002
+        self.assertEqual(self.run_case(data)['status'],'failed')
+
+    def test_nested_comparison_rejects_nonfinite_boolean_and_null(self):
+        for bad in (float('nan'),float('inf'),True,None):
+            with self.subTest(bad=bad):
+                self.assertFalse(validator.values_match({'xy':[bad,2]}, {'xy':[1,2]},1e-6))
+        self.assertFalse(validator.values_match({'flag':1},{'flag':True},1e-6))
+
+    def test_nested_comparison_keeps_id_and_order(self):
+        self.assertFalse(validator.values_match(['A','B'],['B','A'],1e-6))
+        self.assertFalse(validator.values_match('1',1,1e-6))
+        self.assertTrue(validator.values_match({'xy':[1.0000005,2]}, {'xy':[1,2]},1e-6))
+
 
 if __name__=='__main__':
     unittest.main()