[data_to_ports] warn on invalid angle

masque/test/test_ports2data.py

@@ -116,3 +116,17 @@ def test_data_to_ports_hierarchical_collision_is_atomic() -> None:
         data_to_ports([layer], lib, parent, max_depth=1)
 
     assert not parent.ports
+
+
+def test_data_to_ports_flat_bad_angle_warns_and_skips(
+        caplog: pytest.LogCaptureFixture,
+        ) -> None:
+    layer = (10, 0)
+    pat = Pattern()
+    pat.label(layer=layer, string="A:type1 nope", offset=(5, 0))
+
+    caplog.set_level("WARNING")
+    data_to_ports([layer], {}, pat)
+
+    assert not pat.ports
+    assert any('bad angle' in record.message for record in caplog.records)