show snapshot disagreements

autotest/test_prt_dry.py

@@ -372,9 +372,14 @@ def check_output(idx, test, snapshot):
     pls = pd.read_csv(trackcsv_path)
     strtpts = pls[pls.ireason == 0]
 
-    assert snapshot == pls.drop(["name", "icell"], axis=1).round(2).to_records(
-        index=False
-    )
+    actual = pls.drop(["name", "icell"], axis=1).round(2).reset_index(drop=True)
+    try:
+        assert snapshot == actual.to_records(index=False)
+    except:
+        snapshot_path = next(iter(k for k in snapshot.session._extensions if name in k))
+        expected = pd.DataFrame(np.load(snapshot_path)).reset_index(drop=True)
+        diff = expected.compare(actual)
+        pytest.fail(diff.to_json())
 
     plot_head = False
     if plot_head:

autotest/test_prt_voronoi1.py

@@ -28,6 +28,8 @@
 from prt_test_utils import get_model_name
 from shapely.geometry import LineString, Point
 
+# snapshot_path = Path(__file__).parent / "__snapshots__" / __name__ / "test_mf6model"
+
 simname = "prtvor1"
 cases = [f"{simname}l2r", f"{simname}welp", f"{simname}weli"]
 times = [True, False, False]
@@ -371,7 +373,16 @@ def check_output(idx, test, snapshot):
     # have moved vertically. round for cross-platform error.
     # skip macos-14 in CI because grid is slightly different
     if not (is_in_ci() and system() == "Darwin" and processor() == "arm"):
-        assert snapshot == endpts.drop("name", axis=1).round(1).to_records(index=False)
+        actual = endpts.drop("name", axis=1).round(1).reset_index(drop=True)
+        try:
+            assert snapshot == actual.to_records(index=False)
+        except:
+            snapshot_path = next(
+                iter(k for k in snapshot.session._extensions if name in k)
+            )
+            expected = pd.DataFrame(np.load(snapshot_path)).reset_index(drop=True)
+            diff = expected.compare(actual)
+            pytest.fail(diff.to_json())
 
     # plot results if enabled
     plot = False