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History-free snapshot of the private development repository at 77a82eb. Code, docs and the public catalogue only: no plant or job knowledge layers, no client, job or producer names (tools/scrub.py clean against the widened term list; a second word-level grep clean). The intro deck is left out because its slide images cannot be checked for job drawings.
129 lines
5.7 KiB
Python
129 lines
5.7 KiB
Python
# -*- coding: utf-8 -*-
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"""A plant's own tested parts chart (`lifting_anchors.parts`) rates a lifter
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when `lifters.capacity_lb` has nothing: tension by the plant's chosen sling
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angle, shear as printed when it is a real non-zero number -- or equal to
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tension for a back-cast face lifter the chart's footnote names. A printed
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zero that the footnote does not reach is NOT RATED, not a real zero (see
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`lifter_capacity`'s 2026-09-04 docstring note), and falls through to the
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catalogue, or to None naming why, exactly like a field the table never
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mentioned at all."""
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from vibe import knowledge
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def _know(**over):
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base = {
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'lifting_anchors': {
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'sling_angle_choice': 60,
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'sling_angles_published': [60, 75],
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'back_cast_shear_equals_tension': True,
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'back_cast_shear_equals_tension_applies_to': ['ZZ8T634', 'ZZ4T512'],
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'parts': {
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'ZZ8T634': {'usage': 'back_stripping', 'clutch_tons': 8,
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'tension_60_lb': 9270, 'tension_75_lb': 10340,
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'shear_lb': 0},
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'QQ846': {'usage': 'back_stripping', 'tension_60_lb': 3080,
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'tension_75_lb': 3440, 'shear_lb': 0},
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'EE12': {'usage': 'edge', 'tension_lb': 5000, 'shear_lb': 2500},
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},
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},
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'handling': {'lifter_groups': {'face': {'families': ['ZZ', 'QQ']},
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'edge_top': {'families': ['EE']}}},
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}
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base.update(over)
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return base
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FACE = 'ZZ8T634_LIFTING PIN ANCHOR'
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def test_tension_resolves_from_the_parts_chart_at_the_chosen_angle():
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cap, basis, why = knowledge.lifter_capacity(_know(), FACE)
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assert (cap, basis) == (9270, 'plant_table'), why
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assert 'lifting_anchors.parts' in why and '60' in why
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def test_back_cast_face_lifter_shear_equals_tension():
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cap, basis, why = knowledge.lifter_capacity(_know(), FACE, kind='shear')
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assert (cap, basis) == (9270, 'plant_table'), why
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assert 'back' in why
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def test_footnote_does_not_reach_a_part_it_does_not_name():
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"""QQ846 prints a bare Zero with no footnote marker -- NOT RATED here
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(2026-09-04: a printed zero is never taken as a real rating on its own,
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see `lifter_capacity`'s docstring), and this fixture has no catalogue
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fallback for it either, so the answer is None with a why naming that."""
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cap, basis, why = knowledge.lifter_capacity(_know(), 'QQ846_ANCHOR', kind='shear')
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assert (cap, basis) == (None, None), why
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assert 'QQ846' in why and 'catalogue alias' in why
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def test_footnote_does_not_apply_to_an_edge_lifter():
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"""Same fixture as the face-lifter footnote test above, but with the
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family regrouped as EDGE -- `_is_face_lifter` now says no, so the
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footnote does not fire even though the part is named in
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`back_cast_shear_equals_tension_applies_to`, and (no catalogue in this
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fixture) the answer stands down naming both layers tried."""
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know = _know()
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know['handling']['lifter_groups']['face']['families'] = ['QQ']
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cap, basis, why = knowledge.lifter_capacity(know, FACE, kind='shear')
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assert (cap, basis) == (None, None), why
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assert 'catalogue alias' in why
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def test_printed_zero_falls_through_to_the_catalogue_when_one_exists():
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"""The other half of the fix: a printed/pinned zero is not a dead end
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when the published catalogue DOES rate the part -- `basis` becomes
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'catalogue' and `why` names both the plant table's silence and the
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catalogue's number, never a bare 0 from the chart."""
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know = _know()
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know['lifters'] = {'catalogue_alias': {'QQ846': 'SAMPLE_INSERT'}}
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know['catalogue'] = {'inserts': {'SAMPLE_INSERT': {'shear_load_lb': 4000,
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'working_load_lb': 9000}}}
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cap, basis, why = knowledge.lifter_capacity(know, 'QQ846_ANCHOR', kind='shear')
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assert (cap, basis) == (4000, 'catalogue'), why
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assert 'QQ846' in why and 'prints a published/pinned zero' in why
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assert 'catalogue.inserts.SAMPLE_INSERT' in why
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def test_forbidden_is_a_deliberate_zero_not_a_missing_rating():
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"""`shear_lb: forbidden` (or `false`) is the plant stating outright that
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this part may never be loaded that way -- a real, deliberate zero, and
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it must come back as 0 even though a printed bare 0 no longer does."""
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know = _know()
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know['lifting_anchors']['parts']['QQ846']['shear_lb'] = 'forbidden'
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cap, basis, why = knowledge.lifter_capacity(know, 'QQ846_ANCHOR', kind='shear')
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assert (cap, basis) == (0, 'plant_table'), why
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assert 'FORBIDDEN' in why and 'deliberate' in why
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know2 = _know()
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know2['lifting_anchors']['parts']['QQ846']['shear_lb'] = False
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cap, basis, why = knowledge.lifter_capacity(know2, 'QQ846_ANCHOR', kind='shear')
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assert (cap, basis) == (0, 'plant_table'), why
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assert 'FORBIDDEN' in why
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def test_plain_tension_and_shear_entries_read_as_stated():
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assert knowledge.lifter_capacity(_know(), 'EE12_EDGE')[0] == 5000
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assert knowledge.lifter_capacity(_know(), 'EE12_EDGE', kind='shear')[0] == 2500
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def test_no_sling_angle_choice_stands_down():
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know = _know()
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know['lifting_anchors']['sling_angle_choice'] = None
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cap, basis, why = knowledge.lifter_capacity(know, FACE)
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assert cap is None and basis is None
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assert 'sling' in why.lower()
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def test_lifters_capacity_lb_still_wins_over_the_chart():
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know = _know(lifters={'capacity_lb': {'ZZ8T634': 7000}})
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cap, basis, why = knowledge.lifter_capacity(know, FACE)
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assert (cap, basis) == (7000, 'direct'), why
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def test_unknown_family_still_falls_through_to_the_catalogue_path():
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cap, basis, why = knowledge.lifter_capacity(_know(), 'NOPE_THING')
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assert cap is None and basis is None
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assert 'catalogue' in why
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