rsp2k
a2e108bc51
Over 8 net orders it left 25 to 30 fewer connections unrouted on the dense sense boards and 16 to 18 fewer on two PCBench boards, and was never clearly worse. KiCad DRC on the sense harness: 41 opens to 28.
44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
"""--rollback: a rip-up that loses connections is undone, leaving no trace."""
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from __future__ import annotations
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from pathlib import Path
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import pytest
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from freeroute.board import build_board
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from freeroute.dsn import parse_dsn
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from freeroute.route.grid_router import GridRouter
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from freeroute.route.pipeline import _rule_clearance_dsn, _rule_width_dsn, route_dsn_board
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FIXTURES = Path(__file__).resolve().parent.parent / "dsn" / "fixtures"
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def _routed_router(name):
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dsn = parse_dsn((FIXTURES / name).read_text())
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s = dsn.resolution.value
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router = GridRouter(
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build_board(dsn),
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trace_width=round(_rule_width_dsn(dsn) * s),
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clearance=round(_rule_clearance_dsn(dsn) * s),
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rollback=True,
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)
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return router, router.route()
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@pytest.mark.parametrize("name", ["ripup_needed.dsn", "true_density.dsn", "kicad_routable.dsn"])
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def test_occupancy_only_holds_routed_connections(name):
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router, _ = _routed_router(name)
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conns = router._conns
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assert all(conns[i].routed for i in router._cell_owner.values())
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assert all(conns[i].routed for i in router._via_owner.values())
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assert all(conns[i].routed for claims in router._halo.values() for i in claims)
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@pytest.mark.parametrize("name", ["ripup_needed.dsn", "true_density.dsn", "kicad_routable.dsn"])
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def test_rollback_never_routes_fewer_than_plain_rip_up(name):
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text = (FIXTURES / name).read_text()
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plain, _, _ = route_dsn_board(parse_dsn(text), rollback=False)
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undo, _, _ = route_dsn_board(parse_dsn(text))
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assert undo.unrouted <= plain.unrouted
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