Files
autocad-mcp-pro/tests/test_pid_line_draw.py
T
Umut CANandClaude Opus 5 3c0babfef1 fix(pid): signal lines carry no fabricated number; a bubble exits towards the first waypoint
An ISA-5.1 signal line has no pipe line number, yet every pneumatic /
electric line got the bare sequence as its number and a label, and ate a
process sequence number. Signal classes now leave line_number None (a
verbatim one is still honoured), seq None, no label. A radial port aimed
at the far end even with waypoints, so the first segment cut through the
bubble; aim_points (lines.py) aims at the first/last waypoint for both
draw_line and the dry run.

Merge note: benchmarks/adapters/autocad_mcp_pro.py (final group's file)
had its two _task_pid_roundtrip assertion lines moved to the new truth —
the signal row is unnumbered, the connector row is 3.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-21 22:24:03 +03:00

427 lines
17 KiB
Python

"""pid_line_draw: port-to-port orthogonal lines with class, number, markers, arrows."""
from __future__ import annotations
from types import SimpleNamespace
import pytest
from backends.com_backend import ComBackend
from engineering.pid.drawlines import draw_line, existing_pid_lines, resolve_endpoint
from engineering.pid.insert import place_symbol
from engineering.pid.xdata import (
APP_NAME,
encode_payload,
line_payload,
read_payload,
write_payload,
)
pytestmark = pytest.mark.asyncio
async def _pump_and_vessel(backend):
pump = await place_symbol(backend, "centrifugal_pump", 100, 100, tag="P-101")
vessel = await place_symbol(backend, "vertical_vessel", 220, 120, tag="V-201")
return pump, vessel
async def test_process_line_between_ports(backend):
pump, vessel = await _pump_and_vessel(backend)
result = await draw_line(
backend,
{"handle": pump["handle"], "port": "discharge"},
{"handle": vessel["handle"], "port": "N3"},
line_class="process_major",
size="100",
service="P",
spec="CS1",
)
assert result["layer"] == "PROCESS-PIPING-MAIN" and result["line_class"] == "process_major"
assert result["vertices"][0] == [100.0, 106.0] and result["vertices"][-1] == [207.0, 128.0]
assert result["line_number"] == "100-P-1-CS1" and result["label_handle"]
assert result["arrow_handle"] and result["marker_handles"] == []
assert result["crossings"] == 0 and result["port_reuse"] == []
info = await backend.entity_get(result["handle"])
assert info.type == "LWPOLYLINE" and info.layer == "PROCESS-PIPING-MAIN"
payload = await read_payload(backend, result["handle"])
assert payload["kind"] == "line" and payload["from"] == {
"handle": pump["handle"],
"port": "discharge",
}
assert payload["seq"] == 1
label = await backend.entity_get(result["label_handle"])
assert label.layer == "PROCESS-LINE-TEXT" and label.properties["text"] == "100-P-1-CS1"
arrow = await backend.entity_get(result["arrow_handle"])
assert arrow.properties["block_name"] == "PID_MARKER_ARROW_FLOW"
assert arrow.layer == "PROCESS-PIPING-MAIN"
async def test_sequence_increments_and_number_can_be_given(backend):
pump, vessel = await _pump_and_vessel(backend)
first = await draw_line(
backend,
{"handle": pump["handle"], "port": "discharge"},
{"handle": vessel["handle"], "port": "N3"},
size="100",
service="P",
)
second = await draw_line(
backend,
{"handle": vessel["handle"], "port": "N4"},
{"x": 300, "y": 128},
size="80",
service="P",
)
assert (first["line_number"], second["line_number"]) == ("100-P-1", "80-P-2")
third = await draw_line(
backend,
{"handle": vessel["handle"], "port": "N1"},
{"x": 210, "y": 200},
line_number="VENT-01",
)
assert third["line_number"] == "VENT-01"
async def test_signal_line_from_a_bubble_gets_markers_and_no_arrow(backend):
cv = await place_symbol(backend, "globe", 100, 100, tag="FCV-1", actuator="diaphragm")
fic = await place_symbol(
backend, "instrument", 100, 160, tag="FIC-1", type="dcs", location="primary"
)
result = await draw_line(
backend,
{"handle": fic["handle"]},
{"handle": cv["handle"], "port": "signal"},
line_class="pneumatic",
)
assert result["vertices"][0] == [100.0, 155.0], "the line starts on the bubble's circle"
assert result["vertices"][-1] == [100.0, 109.0]
assert result["arrow_handle"] is None and len(result["marker_handles"]) == 1
mark = await backend.entity_get(result["marker_handles"][0])
assert mark.properties["block_name"] == "PID_MARKER_MARK_PNEUMATIC"
assert mark.layer == "INSTRUMENT-LINE-SIGNAL"
line = await backend.entity_get(result["handle"])
assert line.linetype == "Continuous"
electric = await draw_line(
backend, {"handle": fic["handle"]}, {"x": 160, "y": 160}, line_class="electric"
)
assert (await backend.entity_get(electric["handle"])).linetype == "ByLayer"
async def test_port_reuse_and_crossings_are_reported_not_refused(backend):
pump, vessel = await _pump_and_vessel(backend)
await draw_line(
backend,
{"handle": pump["handle"], "port": "discharge"},
{"handle": vessel["handle"], "port": "N3"},
)
again = await draw_line(
backend, {"handle": pump["handle"], "port": "discharge"}, {"x": 100, "y": 200}
)
assert again["port_reuse"] == [{"handle": pump["handle"], "port": "discharge"}]
crossing = await draw_line(
backend, {"x": 150, "y": 90}, {"x": 150, "y": 140}, line_class="utility"
)
assert crossing["crossings"] == 1
async def test_refusals(backend):
pump, vessel = await _pump_and_vessel(backend)
with pytest.raises(ValueError, match="same"):
await draw_line(
backend,
{"handle": pump["handle"], "port": "discharge"},
{"handle": pump["handle"], "port": "discharge"},
)
with pytest.raises(ValueError, match="discharge, suction"): # payload ports are JSON-sorted
await draw_line(backend, {"handle": pump["handle"], "port": "outlet"}, {"x": 0, "y": 0})
with pytest.raises(ValueError, match="choose a port"):
await draw_line(backend, {"handle": pump["handle"]}, {"x": 0, "y": 0})
with pytest.raises(ValueError, match="line_class"):
await draw_line(backend, {"x": 0, "y": 0}, {"x": 10, "y": 0}, line_class="steam")
first = await draw_line(
backend, {"handle": pump["handle"], "port": "discharge"}, {"x": 100, "y": 200}
)
with pytest.raises(ValueError, match="decoration"):
await draw_line(backend, {"handle": first["arrow_handle"], "port": "in"}, {"x": 0, "y": 0})
with pytest.raises(ValueError, match="not a P&ID symbol"):
line = await backend.entity_create_line(0, 0, 1, 1)
await draw_line(backend, {"handle": line.handle, "port": "in"}, {"x": 0, "y": 0})
async def test_mirrored_symbol_ports_follow_the_mirrored_geometry(backend):
"""``entity_mirror`` on an INSERT writes ``y_scale = -1``; the port has to be
on the mirrored pump (discharge stub at (200, 104)->(200, 106)), not at the
unmirrored offset — a line attached at y=94 runs through the pump body."""
pump = await place_symbol(backend, "centrifugal_pump", 100, 100, tag="P-1")
about_vertical = await backend.entity_mirror(pump["handle"], 150, 0, 150, 200)
info = await backend.entity_get(about_vertical.handle)
assert info.properties["y_scale"] == -1.0, "the fixture must exercise a real mirror"
ep = await resolve_endpoint(backend, {"handle": about_vertical.handle, "port": "discharge"})
assert (ep["x"], ep["y"], ep["direction_deg"]) == (200.0, 106.0, 90.0)
suction = await resolve_endpoint(backend, {"handle": about_vertical.handle, "port": "suction"})
assert (suction["x"], suction["y"], suction["direction_deg"]) == (204.0, 100.0, 0.0)
result = await draw_line(
backend, {"handle": about_vertical.handle, "port": "discharge"}, {"x": 200, "y": 160}
)
assert result["vertices"][0] == [200.0, 106.0]
about_horizontal = await backend.entity_mirror(pump["handle"], 0, 150, 300, 150)
ep = await resolve_endpoint(backend, {"handle": about_horizontal.handle, "port": "discharge"})
assert (ep["x"], ep["y"], ep["direction_deg"]) == (100.0, 194.0, 270.0)
async def test_an_extrusion_mirrored_symbol_resolves_its_port_on_the_mirror_image(backend):
"""MIRROR3D (and foreign DXFs) store a mirror as extrusion -Z rather than
a negative scale; the port is where the mirrored geometry is."""
from ezdxf.math import Vec3
pump = await place_symbol(backend, "centrifugal_pump", 50, 20, rotation=30.0, tag="P-1")
ent = backend._doc.entitydb.get(pump["handle"])
ent.dxf.extrusion = (0, 0, -1)
ent.dxf.insert = (-50, 20, 0) # the same WCS insertion point
truth = ent.matrix44().transform(Vec3(0, 6, 0))
ep = await resolve_endpoint(backend, {"handle": pump["handle"], "port": "discharge"})
assert (ep["x"], ep["y"]) == pytest.approx((truth.x, truth.y))
assert (ep["x"], ep["y"]) == pytest.approx((53.0, 25.196), abs=1e-3)
assert ep["direction_deg"] == pytest.approx(60.0)
# unrotated: the suction that faced -x at (46, 20) now faces +x at (54, 20)
pump = await place_symbol(backend, "centrifugal_pump", 150, 20, tag="P-2")
ent = backend._doc.entitydb.get(pump["handle"])
ent.dxf.extrusion = (0, 0, -1)
ent.dxf.insert = (-150, 20, 0)
ep = await resolve_endpoint(backend, {"handle": pump["handle"], "port": "suction"})
assert (ep["x"], ep["y"], ep["direction_deg"]) == pytest.approx((154.0, 20.0, 0.0))
result = await draw_line(
backend, {"handle": pump["handle"], "port": "suction"}, {"x": 200, "y": 20}
)
assert result["vertices"][0] == pytest.approx([154.0, 20.0])
async def test_stretched_symbol_is_refused_not_resolved_off_the_geometry(backend):
pump = await place_symbol(backend, "centrifugal_pump", 100, 100, tag="P-1")
payload = await read_payload(backend, pump["handle"])
stretched = await backend.block_insert(pump["block_name"], 300, 100, 2.0, 1.0, 0.0)
await write_payload(backend, stretched.handle, payload)
with pytest.raises(ValueError, match="non-uniform"):
await resolve_endpoint(backend, {"handle": stretched.handle, "port": "discharge"})
with pytest.raises(ValueError, match="non-uniform"):
await draw_line(
backend, {"handle": stretched.handle, "port": "discharge"}, {"x": 0, "y": 0}
)
# ── the COM engine names a lightweight polyline ``AcDbPolyline`` ─────────────
class _ComEntity:
"""An ActiveX entity with only the members it is given."""
def __init__(self, object_name, **members):
self.ObjectName = object_name
for name, value in members.items():
setattr(self, name, value)
def __getattr__(self, name):
raise AttributeError(name)
def _com_pid_polyline(handle, coords, payload):
tags = encode_payload(payload)
codes = [1001] + [1000] * len(tags)
values = [APP_NAME] + tags
return _ComEntity(
"AcDbPolyline",
Handle=handle,
Layer="PROCESS-PIPING-MAIN",
Color=256,
Linetype="ByLayer",
Visible=True,
Closed=False,
Length=1.0,
Coordinates=tuple(coords),
Normal=(0.0, 0.0, 1.0),
Elevation=0.0,
GetBoundingBox=lambda: ((0.0, 0.0, 0.0), (1.0, 1.0, 0.0)),
GetXData=lambda app: (codes, values),
)
def _fake_com(monkeypatch, entities):
backend = ComBackend()
async def run_inline(func, *args, **kwargs):
return func(*args, **kwargs)
monkeypatch.setattr(backend, "_run", run_inline)
by_handle = {ent.Handle: ent for ent in entities}
space = SimpleNamespace(Count=len(entities), Item=lambda i: entities[i])
doc = SimpleNamespace(HandleToObject=lambda handle: by_handle[handle])
monkeypatch.setattr("backends.com_backend._msp", lambda: space)
monkeypatch.setattr("backends.com_backend._acad_doc", lambda: doc)
return backend
async def test_existing_lines_are_seen_on_the_com_engine(monkeypatch):
"""A live LWPOLYLINE's ObjectName is ``AcDbPolyline`` (measured on AutoCAD
2026), which the COM engine reports as type POLYLINE. A reader that filters
on LWPOLYLINE sees nothing there: every number restarts at seq 1, crossings
stay 0 and port reuse is never reported."""
payload = line_payload(
"process_major",
"100-P-7",
"100",
"P",
None,
None,
7,
{"handle": "2A", "port": "discharge"},
None,
)
poly = _com_pid_polyline("3E", (100.0, 106.0, 100.0, 128.0, 207.0, 128.0), payload)
other_layer = _com_pid_polyline("3F", (0.0, 0.0, 1.0, 1.0), payload)
other_layer.Layer = "GEOMETRY"
backend = _fake_com(monkeypatch, [poly, other_layer])
assert (await backend.entity_get("3E")).type == "POLYLINE"
lines = await existing_pid_lines(backend)
assert [ln["handle"] for ln in lines] == ["3E"]
assert lines[0]["vertices"] == [(100.0, 106.0), (100.0, 128.0), (207.0, 128.0)]
assert lines[0]["payload"]["seq"] == 7
assert lines[0]["payload"]["from"] == {"handle": "2A", "port": "discharge"}
# ── Track A hardening (track E wave 0, Task 6) ───────────────────────────────
async def _bubble_and_valve(backend):
cv = await place_symbol(backend, "globe", 100, 100, tag="FCV-1", actuator="diaphragm")
fic = await place_symbol(
backend, "instrument", 100, 160, tag="FIC-1", type="dcs", location="primary"
)
return cv, fic
async def test_signal_lines_carry_no_fabricated_number_and_do_not_consume_the_sequence(backend):
"""A signal line has no pipe line number: no auto number, no label, and the
process sequence is left alone."""
cv, fic = await _bubble_and_valve(backend)
pump, vessel = await _pump_and_vessel(backend)
signal = await draw_line(
backend, {"handle": fic["handle"]}, {"handle": cv["handle"], "port": "signal"}, "pneumatic"
)
assert signal["line_number"] is None and signal["label_handle"] is None
payload = await read_payload(backend, signal["handle"])
assert payload["number"] is None and payload["seq"] is None
labels = await backend.entity_count(type_filter="TEXT", layer_filter="PROCESS-LINE-TEXT")
assert labels == 0, "no label text was written for the signal line"
process = await draw_line(
backend,
{"handle": pump["handle"], "port": "discharge"},
{"handle": vessel["handle"], "port": "N3"},
size="100",
service="P",
)
assert process["line_number"] == "100-P-1", "the signal line did not consume seq 1"
assert (await read_payload(backend, process["handle"]))["seq"] == 1
# A signal line given size/service still gets no auto number (kind rules).
electric = await draw_line(
backend, {"handle": fic["handle"]}, {"x": 160, "y": 160}, "electric", size="IA", service="S"
)
assert electric["line_number"] is None and electric["label_handle"] is None
# A verbatim number is honoured and labelled, seq stays None.
named = await draw_line(
backend, {"handle": fic["handle"]}, {"x": 40, "y": 160}, "electric", line_number="IA-7"
)
assert named["line_number"] == "IA-7" and named["label_handle"]
assert (await backend.entity_get(named["label_handle"])).properties["text"] == "IA-7"
assert (await read_payload(backend, named["handle"]))["seq"] is None
# The next process line is 2, not 4.
second = await draw_line(
backend,
{"handle": vessel["handle"], "port": "N4"},
{"x": 300, "y": 128},
size="80",
service="P",
)
assert second["line_number"] == "80-P-2"
async def test_a_bubble_exit_aims_at_the_first_waypoint(backend):
"""With waypoints the radial port must leave towards the first waypoint;
aiming at the far end put the exit on the wrong side and the first segment
cut through the bubble (measured: 4.93 mm from the centre of a r=5 bubble)."""
fic = await place_symbol(
backend, "instrument", 100, 160, tag="FIC-1", type="dcs", location="primary"
)
result = await draw_line(
backend,
{"handle": fic["handle"]},
{"x": 100, "y": 100},
"electric",
route_mode=[[130, 160], [130, 100]],
)
assert result["vertices"] == [[105.0, 160.0], [130.0, 160.0], [130.0, 100.0], [100.0, 100.0]]
# Every vertex of the drawn line is on or outside the bubble.
for x, y in result["vertices"]:
assert ((x - 100) ** 2 + (y - 160) ** 2) ** 0.5 >= 5.0 - 1e-9
async def test_a_bubble_entry_aims_at_the_last_waypoint(backend):
fic = await place_symbol(
backend, "instrument", 100, 160, tag="FIC-1", type="dcs", location="primary"
)
result = await draw_line(
backend,
{"x": 100, "y": 100},
{"handle": fic["handle"]},
"electric",
route_mode=[[130, 100], [130, 160]],
)
assert result["vertices"] == [[100.0, 100.0], [130.0, 100.0], [130.0, 160.0], [105.0, 160.0]]
async def test_dry_run_plans_the_same_bubble_exit_as_the_real_run(backend):
from engineering.pid.spec import run_spec
spec = {
"instruments": [
{
"id": "FIC-1",
"type": "dcs",
"location": "primary",
"x": 100,
"y": 160,
"tag": "FIC-1",
}
],
"valves": [
{
"id": "FCV-1",
"symbol": "globe",
"actuator": "diaphragm",
"x": 100,
"y": 100,
"tag": "FCV-1",
}
],
"lines": [
{
"from": "FIC-1",
"to": "FCV-1.signal",
"class": "electric",
"route": [[130, 160], [130, 109]],
}
],
}
planned = await run_spec(backend, spec, dry_run=True)
assert planned["lines"][0]["vertices"][0] == [105.0, 160.0]
drawn = await run_spec(backend, spec)
edge = drawn["graph"]["edges"][0]
assert edge["line_number"] is None, "signal lines from a spec are unnumbered too"