kicad-mcp/tests/test_schematic.py
Ryan Malloy 7525f3dcdc Fix add_label persistence and add_power_symbol custom library fallback
add_label bypasses kicad-sch-api serializer entirely — generates
s-expression strings and inserts them directly into the .kicad_sch
file via atomic write. Fixes two upstream bugs: global labels silently
dropped on save (serializer never iterates "global_label" key), and
local labels raising TypeError (parameter signature mismatch in
LabelCollection.add()).

add_power_symbol now falls back to sexp pin parsing when the API
returns None for custom library symbols (e.g. SMF5.0CA). Extracts
shared resolve_pin_position() utility used by both add_power_symbol
and batch operations.

Batch labels also fixed — collected as sexp strings during the batch
loop and inserted after sch.save() so the serializer can't overwrite
them.
2026-03-04 20:06:06 -07:00

252 lines
8.8 KiB
Python

"""Tests for schematic tools (kicad-sch-api integration)."""
import os
import pytest
from tests.conftest import requires_sch_api
@pytest.mark.unit
def test_create_schematic(tmp_output_dir):
"""create_schematic should produce a .kicad_sch file."""
from mckicad.tools.schematic import create_schematic
output_path = os.path.join(tmp_output_dir, "test.kicad_sch")
result = create_schematic(name="test_circuit", output_path=output_path)
assert result["success"] is True
assert os.path.exists(output_path)
@pytest.mark.unit
def test_create_schematic_invalid_path():
"""create_schematic should fail gracefully for invalid paths."""
from mckicad.tools.schematic import create_schematic
result = create_schematic(name="x", output_path="/nonexistent/dir/test.kicad_sch")
assert result["success"] is False
assert "error" in result
@pytest.mark.unit
def test_search_components():
"""search_components should return results for common queries."""
from mckicad.tools.schematic import search_components
result = search_components(query="resistor")
# Should succeed even if no libs installed (returns empty results)
assert "success" in result
@pytest.mark.unit
def test_list_components_empty_schematic(tmp_output_dir):
"""list_components on new empty schematic should return empty list."""
from mckicad.tools.schematic import create_schematic, list_components
path = os.path.join(tmp_output_dir, "empty.kicad_sch")
create_schematic(name="empty", output_path=path)
result = list_components(schematic_path=path)
if result["success"]:
assert result.get("count", 0) == 0
@requires_sch_api
@pytest.mark.unit
def test_list_components_single_lookup(populated_schematic):
"""list_components with reference param should return one component."""
from mckicad.tools.schematic import list_components
result = list_components(schematic_path=populated_schematic, reference="R1")
assert result["success"] is True
assert result["count"] == 1
assert result["components"][0]["reference"] == "R1"
@requires_sch_api
@pytest.mark.unit
def test_list_components_single_lookup_not_found(populated_schematic):
"""list_components with nonexistent reference should fail."""
from mckicad.tools.schematic import list_components
result = list_components(schematic_path=populated_schematic, reference="Z99")
assert result["success"] is False
@requires_sch_api
@pytest.mark.unit
def test_get_schematic_info_compact(populated_schematic):
"""get_schematic_info should return compact output."""
from mckicad.tools.schematic import get_schematic_info
result = get_schematic_info(schematic_path=populated_schematic)
assert result["success"] is True
assert "statistics" in result
assert "validation" in result
assert "unique_symbol_count" in result
@requires_sch_api
@pytest.mark.unit
def test_get_component_detail(populated_schematic):
"""get_component_detail should return full info for one component."""
from mckicad.tools.schematic import get_component_detail
result = get_component_detail(schematic_path=populated_schematic, reference="R1")
assert result["success"] is True
assert result["component"]["reference"] == "R1"
assert result["component"]["lib_id"] == "Device:R"
@requires_sch_api
@pytest.mark.unit
def test_get_component_detail_not_found(populated_schematic):
"""get_component_detail for missing component should fail."""
from mckicad.tools.schematic import get_component_detail
result = get_component_detail(schematic_path=populated_schematic, reference="Z99")
assert result["success"] is False
@requires_sch_api
@pytest.mark.unit
def test_get_schematic_hierarchy(populated_schematic):
"""get_schematic_hierarchy should return at least the root sheet."""
from mckicad.tools.schematic import get_schematic_hierarchy
result = get_schematic_hierarchy(schematic_path=populated_schematic)
assert result["success"] is True
assert result["hierarchy"]["name"] == "root"
assert result["hierarchy"]["total_sheets"] >= 1
@pytest.mark.unit
def test_file_output_infrastructure(tmp_output_dir):
"""write_detail_file should create .mckicad/{stem}/ sidecar directory and file."""
from mckicad.utils.file_utils import write_detail_file
fake_sch = os.path.join(tmp_output_dir, "test.kicad_sch")
# File doesn't need to exist for write_detail_file
open(fake_sch, "w").close()
data = {"test": "data", "items": [1, 2, 3]}
path = write_detail_file(fake_sch, "test_output.json", data)
assert os.path.isfile(path)
assert ".mckicad" in path
assert os.path.join(".mckicad", "test", "test_output.json") in path
@pytest.mark.unit
def test_file_output_cwd_fallback(tmp_output_dir, monkeypatch):
"""write_detail_file with None path should use flat CWD/.mckicad/."""
from mckicad.utils.file_utils import write_detail_file
monkeypatch.chdir(tmp_output_dir)
path = write_detail_file(None, "test_cwd.json", {"test": True})
assert os.path.isfile(path)
assert ".mckicad" in path
# None path stays flat — no stem subdirectory
assert path.endswith(os.path.join(".mckicad", "test_cwd.json"))
@pytest.mark.unit
def test_sidecar_per_schematic_isolation(tmp_output_dir):
"""Detail files for different schematics land in separate subdirectories."""
from mckicad.utils.file_utils import write_detail_file
sch_a = os.path.join(tmp_output_dir, "power.kicad_sch")
sch_b = os.path.join(tmp_output_dir, "esp32_p4_core.kicad_sch")
open(sch_a, "w").close()
open(sch_b, "w").close()
path_a = write_detail_file(sch_a, "connectivity.json", {"nets": {}})
path_b = write_detail_file(sch_b, "connectivity.json", {"nets": {}})
assert os.path.isfile(path_a)
assert os.path.isfile(path_b)
assert path_a != path_b
assert os.path.join(".mckicad", "power", "connectivity.json") in path_a
assert os.path.join(".mckicad", "esp32_p4_core", "connectivity.json") in path_b
class TestAddLabelPersistence:
"""Labels added via add_label must actually appear in the saved file."""
@pytest.mark.unit
def test_local_label_persists(self, tmp_output_dir):
from mckicad.tools.schematic import add_label
path = os.path.join(tmp_output_dir, "label_test.kicad_sch")
with open(path, "w") as f:
f.write("(kicad_sch\n (version 20231120)\n (uuid \"abc\")\n)\n")
result = add_label(schematic_path=path, text="SPI_CLK", x=100.0, y=200.0)
assert result["success"] is True
assert result["label_type"] == "local"
assert result["engine"] == "sexp-direct"
with open(path) as f:
content = f.read()
assert '(label "SPI_CLK"' in content
assert "(at 100 200 0)" in content
@pytest.mark.unit
def test_global_label_persists(self, tmp_output_dir):
from mckicad.tools.schematic import add_label
path = os.path.join(tmp_output_dir, "glabel_test.kicad_sch")
with open(path, "w") as f:
f.write("(kicad_sch\n (version 20231120)\n (uuid \"abc\")\n)\n")
result = add_label(
schematic_path=path, text="VBUS_OUT", x=187.96, y=114.3,
global_label=True,
)
assert result["success"] is True
assert result["label_type"] == "global"
with open(path) as f:
content = f.read()
assert '(global_label "VBUS_OUT"' in content
assert "(shape bidirectional)" in content
assert "Intersheetrefs" in content
@pytest.mark.unit
def test_multiple_labels_all_persist(self, tmp_output_dir):
from mckicad.tools.schematic import add_label
path = os.path.join(tmp_output_dir, "multi_label.kicad_sch")
with open(path, "w") as f:
f.write("(kicad_sch\n (version 20231120)\n (uuid \"abc\")\n)\n")
labels = ["NET_A", "NET_B", "NET_C", "GLOBAL_D"]
for i, name in enumerate(labels):
is_global = name.startswith("GLOBAL_")
result = add_label(
schematic_path=path, text=name,
x=100.0 + i * 10, y=200.0,
global_label=is_global,
)
assert result["success"] is True
with open(path) as f:
content = f.read()
for name in labels:
if name.startswith("GLOBAL_"):
assert f'(global_label "{name}"' in content
else:
assert f'(label "{name}"' in content
@pytest.mark.unit
def test_empty_text_rejected(self, tmp_output_dir):
from mckicad.tools.schematic import add_label
path = os.path.join(tmp_output_dir, "empty_label.kicad_sch")
with open(path, "w") as f:
f.write("(kicad_sch\n (version 20231120)\n (uuid \"abc\")\n)\n")
result = add_label(schematic_path=path, text="", x=0, y=0)
assert result["success"] is False