Coverage for tests/cim_converter/unit/test_topology_validator.py: 100%

1# tests/unit/test_topology_validator.py 

2import pandas as pd 

3# import pytest 

4from distopf.cim_importer.validators.topology_validator import TopologyValidator 

5 

6 

7def test_validate_empty_branch_data(): 

8 tv = TopologyValidator() 

9 empty = pd.DataFrame(columns=["from_name", "to_name"]) 

10 result = tv.validate_tree_topology(empty) 

11 assert not result["valid"] 

12 assert "No branch data found" in result["issues"][0] 

13 

14 

15def test_validate_disconnected_and_orphaned(): 

16 tv = TopologyValidator() 

17 # Two disconnected edges -> two components 

18 df = pd.DataFrame( 

19 [ 

20 { 

21 "from_name": "A", 

22 "to_name": "B", 

23 "raa": 0.01, 

24 "xaa": 0.02, 

25 "v_ln_base": 120, 

26 }, 

27 { 

28 "from_name": "C", 

29 "to_name": "D", 

30 "raa": 0.01, 

31 "xaa": 0.02, 

32 "v_ln_base": 120, 

33 }, 

34 ] 

35 ) 

36 res = tv.validate_tree_topology(df) 

37 assert not res["valid"] 

38 assert any( 

39 "disconnected" in issue.lower() and "component" in issue.lower() 

40 for issue in res["issues"] 

41 ) 

42 

43 

44def test_negative_impedance_and_missing_voltage_warning(): 

45 tv = TopologyValidator() 

46 df = pd.DataFrame( 

47 [ 

48 { 

49 "from_name": "A", 

50 "to_name": "B", 

51 "raa": -0.1, 

52 "xaa": 0.0, 

53 "v_ln_base": 120, 

54 "type": "ACLineSegment", 

55 }, 

56 { 

57 "from_name": "B", 

58 "to_name": "C", 

59 "raa": 0.0, 

60 "xaa": 0.0, 

61 "v_ln_base": None, 

62 "type": "transformer", 

63 }, 

64 ] 

65 ) 

66 res = tv.validate_tree_topology(df) 

67 # Should produce warnings for negative raa and missing v_ln_base, but overall might still be valid or not; check warnings content 

68 assert any( 

69 "negative" in w.lower() or "missing voltage base" in w.lower() 

70 for w in res["warnings"] 

71 )