Files
kicad-mcp-server/tests/test_case_sensitivity_warning.py
2026-04-12 15:49:15 +01:00

351 lines
13 KiB
Python

"""
Tests for case-sensitivity warnings in add_schematic_net_label.
When a label is placed whose name differs from an existing net only in case
(e.g. adding "outp" when "OUTP" already exists), the tool should succeed but
include a `case_warnings` list in the response.
Covers:
- Unit: case_warnings populated when names differ only in case
- Unit: no case_warnings when name is an exact match or no similar name exists
- Integration: place "outp" in a schematic that already has "OUTP" -> warning
- Integration: place "VCC" in a schematic that already has "VCC" -> no warning
"""
import shutil
import sys
import tempfile
import types
import uuid
from pathlib import Path
from typing import Any
from unittest.mock import MagicMock, patch
import pytest
PYTHON_DIR = Path(__file__).resolve().parent.parent / "python"
sys.path.insert(0, str(PYTHON_DIR))
TEMPLATE_PATH = Path(__file__).resolve().parent.parent / "python" / "templates" / "empty.kicad_sch"
# ---------------------------------------------------------------------------
# Helpers shared between unit and integration tests
# ---------------------------------------------------------------------------
def _make_iface() -> Any:
"""Return a KiCADInterface instance with __init__ stubbed out."""
for mod in ["pcbnew", "skip"]:
sys.modules.setdefault(mod, types.ModuleType(mod))
from kicad_interface import KiCADInterface
with patch.object(KiCADInterface, "__init__", lambda self, *a, **kw: None):
return KiCADInterface.__new__(KiCADInterface)
def _label_sexp(name: str, x: float, y: float, angle: float = 0) -> str:
u = str(uuid.uuid4())
return (
f'(label "{name}" (at {x} {y} {angle})\n'
f" (effects (font (size 1.27 1.27)) (justify left bottom))\n"
f' (uuid "{u}"))'
)
def _make_temp_schematic(extra_sexp: str = "") -> Path:
"""Copy empty.kicad_sch to a temp dir, optionally injecting extra S-expressions."""
tmp = Path(tempfile.mkdtemp()) / "test.kicad_sch"
shutil.copy(TEMPLATE_PATH, tmp)
if extra_sexp:
content = tmp.read_text(encoding="utf-8")
idx = content.rfind(")")
content = content[:idx] + "\n" + extra_sexp + "\n)"
tmp.write_text(content, encoding="utf-8")
return tmp
# ---------------------------------------------------------------------------
# Unit tests — mock file I/O completely
# ---------------------------------------------------------------------------
@pytest.mark.unit
class TestCaseWarningPopulated:
"""case_warnings should be present when new label differs from existing by case only."""
@pytest.fixture(autouse=True)
def setup(self) -> None:
self.iface = _make_iface()
def _make_mock_label(self, value: str) -> MagicMock:
lbl = MagicMock()
lbl.value = value
return lbl
def _make_mock_schematic(self, label_names: list) -> MagicMock:
sch = MagicMock(spec=["label", "global_label"])
sch.label = [self._make_mock_label(n) for n in label_names]
sch.global_label = []
return sch
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_case_warning_when_uppercase_exists(self, mock_load: Any, mock_add_label: Any) -> None:
"""Adding 'outp' when 'OUTP' already exists produces a case_warning."""
mock_load.return_value = self._make_mock_schematic(["OUTP"])
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "outp",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" in result
assert len(result["case_warnings"]) == 1
assert "OUTP" in result["case_warnings"][0]
assert "outp" in result["case_warnings"][0]
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_case_warning_when_lowercase_exists(self, mock_load: Any, mock_add_label: Any) -> None:
"""Adding 'OUTP' when 'outp' already exists produces a case_warning."""
mock_load.return_value = self._make_mock_schematic(["outp"])
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "OUTP",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" in result
assert len(result["case_warnings"]) == 1
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_multiple_case_collisions_all_reported(
self, mock_load: Any, mock_add_label: Any
) -> None:
"""Multiple existing labels that differ only in case all produce warnings."""
mock_load.return_value = self._make_mock_schematic(["OUTP", "Outp", "oUtP"])
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "outp",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" in result
assert len(result["case_warnings"]) == 3
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_global_label_case_collision_reported(
self, mock_load: Any, mock_add_label: Any
) -> None:
"""Case collision against a global_label also produces a warning."""
sch = MagicMock(spec=["label", "global_label"])
sch.label = []
sch.global_label = [self._make_mock_label("VDD")]
mock_load.return_value = sch
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "vdd",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" in result
assert len(result["case_warnings"]) == 1
assert "VDD" in result["case_warnings"][0]
@pytest.mark.unit
class TestCaseWarningAbsent:
"""case_warnings should be absent (or empty) when there is no case collision."""
@pytest.fixture(autouse=True)
def setup(self) -> None:
self.iface = _make_iface()
def _make_mock_schematic(self, label_names: list) -> MagicMock:
sch = MagicMock(spec=["label", "global_label"])
sch.label = []
for name in label_names:
lbl = MagicMock()
lbl.value = name
sch.label.append(lbl)
sch.global_label = []
return sch
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_exact_match_no_warning(self, mock_load: Any, mock_add_label: Any) -> None:
"""Adding 'VCC' when 'VCC' already exists is not a case mismatch."""
mock_load.return_value = self._make_mock_schematic(["VCC"])
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "VCC",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" not in result or result.get("case_warnings") == []
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_unrelated_nets_no_warning(self, mock_load: Any, mock_add_label: Any) -> None:
"""Adding a label whose name has no case-insensitive match produces no warning."""
mock_load.return_value = self._make_mock_schematic(["GND", "VCC", "CLK"])
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "MOSI",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" not in result or result.get("case_warnings") == []
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_empty_schematic_no_warning(self, mock_load: Any, mock_add_label: Any) -> None:
"""Adding a label to an empty schematic produces no warning."""
mock_load.return_value = self._make_mock_schematic([])
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "SIG",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" not in result or result.get("case_warnings") == []
@patch("commands.wire_manager.WireManager.add_label", return_value=True)
@patch("commands.schematic.SchematicManager.load_schematic")
def test_load_failure_no_warning_but_still_succeeds(
self, mock_load: Any, mock_add_label: Any
) -> None:
"""If loading the schematic for net-name inspection fails, succeed without warning."""
mock_load.side_effect = RuntimeError("I/O error")
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": "/fake/sch.kicad_sch",
"netName": "SIG",
"position": [10.0, 20.0],
}
)
assert result["success"] is True
assert "case_warnings" not in result or result.get("case_warnings") == []
# ---------------------------------------------------------------------------
# Integration tests — real .kicad_sch file I/O
# ---------------------------------------------------------------------------
@pytest.mark.integration
class TestCaseWarningIntegration:
"""End-to-end: use the handler against a real .kicad_sch file."""
@pytest.fixture(autouse=True)
def setup(self) -> None:
self.iface = _make_iface()
def test_case_collision_produces_warning(self) -> None:
"""Placing 'outp' when 'OUTP' already exists in the file produces a warning."""
path = _make_temp_schematic(_label_sexp("OUTP", 10.0, 10.0))
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": str(path),
"netName": "outp",
"position": [20.0, 20.0],
}
)
assert result["success"] is True, f"Unexpected failure: {result.get('message')}"
assert "case_warnings" in result, "Expected case_warnings in response"
assert len(result["case_warnings"]) >= 1
# Warning message should name both parties
warning_text = " ".join(result["case_warnings"])
assert "OUTP" in warning_text
assert "outp" in warning_text
def test_exact_match_no_warning(self) -> None:
"""Placing 'VCC' when 'VCC' already exists should NOT produce a case warning."""
path = _make_temp_schematic(_label_sexp("VCC", 10.0, 10.0))
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": str(path),
"netName": "VCC",
"position": [20.0, 20.0],
}
)
assert result["success"] is True, f"Unexpected failure: {result.get('message')}"
case_warnings = result.get("case_warnings", [])
assert case_warnings == [], f"Unexpected case_warnings: {case_warnings}"
def test_no_similar_nets_no_warning(self) -> None:
"""Placing a label whose name has no case-insensitive match gives no warning."""
path = _make_temp_schematic(_label_sexp("GND", 10.0, 10.0))
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": str(path),
"netName": "MOSI",
"position": [20.0, 20.0],
}
)
assert result["success"] is True, f"Unexpected failure: {result.get('message')}"
case_warnings = result.get("case_warnings", [])
assert case_warnings == [], f"Unexpected case_warnings: {case_warnings}"
def test_mixed_case_collision_multiple_existing(self) -> None:
"""Multiple existing labels with same letters in different case all warn."""
extra = "\n".join(
[
_label_sexp("OUTP", 10.0, 10.0),
_label_sexp("Outp", 15.0, 10.0),
]
)
path = _make_temp_schematic(extra)
result = self.iface._handle_add_schematic_net_label(
{
"schematicPath": str(path),
"netName": "outp",
"position": [20.0, 20.0],
}
)
assert result["success"] is True, f"Unexpected failure: {result.get('message')}"
assert "case_warnings" in result
assert len(result["case_warnings"]) == 2