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autocad-mcp-pro/tests/test_standards_presets.py
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# tests/test_standards_presets.py
"""Provenance for the authored style presets, pinned by name.
Every ISO-25 and ANSI value is asserted against the table in spec §4.1 — a
reader with ISO 129-1 / ISO 3098-1 / ASME Y14.2 open can check each line.
The refusals are pinned too: a value the standards data lets through is a
value a backend writes, so the data is where "nothing written on refusal"
starts.
"""
from __future__ import annotations
import pytest
from engineering.standards.dimstyles import (
DIM_VARIABLE_RANGES,
DIM_VARIABLE_WHITELIST,
LINEWEIGHT_CODES,
PRESET_VARIABLES,
PRESETS,
check_dim_value,
describe_preset,
resolve_dimstyle,
validate_overrides,
)
from engineering.standards.mleaderstyles import (
MLEADER_KEYS,
MLEADER_PRESETS,
resolve_mleaderstyle,
)
from engineering.standards.textstyles import TEXT_PRESETS, resolve_font, validate_textstyle
# ── ISO-25: ISO 129-1:2018 at the 2.5 mm row of ISO 3098-1 ──────────────────
ISO_25_EXPECTED = {
"DIMTXT": 2.5,
"DIMASZ": 2.5,
"DIMEXE": 1.25,
"DIMEXO": 0.625,
"DIMGAP": 0.625,
"DIMTAD": 1,
"DIMTIH": 0,
"DIMTOH": 0,
"DIMDEC": 2,
"DIMDSEP": ",",
"DIMLUNIT": 2,
"DIMZIN": 8,
"DIMBLK": "",
"DIMTXSTY": "ISOCP",
"DIMLWD": -2,
"DIMLWE": -2,
"DIMSCALE": 1.0,
}
# ── ANSI: ASME Y14.2-2014, metric values ────────────────────────────────────
ANSI_EXPECTED = {
"DIMTXT": 3.0,
"DIMASZ": 3.0,
"DIMEXE": 1.5,
"DIMEXO": 1.5,
"DIMGAP": 1.0,
"DIMTAD": 0,
"DIMTIH": 1,
"DIMTOH": 1,
"DIMDEC": 2,
"DIMDSEP": ".",
"DIMLUNIT": 2,
"DIMZIN": 8,
"DIMBLK": "",
"DIMTXSTY": "ROMANS",
"DIMLWD": -2,
"DIMLWE": -2,
"DIMSCALE": 1.0,
}
@pytest.mark.parametrize(("variable", "expected"), sorted(ISO_25_EXPECTED.items()))
def test_iso25_value_by_name(variable, expected):
assert PRESETS["iso-25"][variable] == expected
assert type(PRESETS["iso-25"][variable]) is type(expected)
@pytest.mark.parametrize(("variable", "expected"), sorted(ANSI_EXPECTED.items()))
def test_ansi_value_by_name(variable, expected):
assert PRESETS["ansi"][variable] == expected
assert type(PRESETS["ansi"][variable]) is type(expected)
def test_presets_set_exactly_the_seventeen_spec_variables():
assert len(PRESET_VARIABLES) == 17
for name, preset in PRESETS.items():
assert tuple(preset) == PRESET_VARIABLES, name
def test_the_whitelist_is_the_seventeen_plus_the_sixteen_spec_extras():
extras = set(
"DIMTOL DIMTP DIMTM DIMTOLJ DIMTFAC DIMLFAC DIMRND DIMATFIT "
"DIMTMOVE DIMCLRD DIMCLRE DIMCLRT DIMSAH DIMBLK1 DIMBLK2 DIMCEN".split()
)
assert DIM_VARIABLE_WHITELIST == set(PRESET_VARIABLES) | extras
assert set(DIM_VARIABLE_RANGES) == DIM_VARIABLE_WHITELIST
def test_iso_lineweights_are_all_legal_codes():
for mm in (0.13, 0.18, 0.25, 0.35, 0.5, 0.7, 1.0, 1.4, 2.0):
assert round(mm * 100) in LINEWEIGHT_CODES
def test_describe_preset_names_the_standard():
iso = describe_preset("ISO-25")
assert iso["name"] == "iso-25"
assert "ISO 129-1" in iso["source"] and "ISO 3098-1" in iso["source"]
assert iso["values"] == ISO_25_EXPECTED and iso["textstyle"] == "ISOCP"
ansi = describe_preset("ansi")
assert "ASME Y14.2" in ansi["source"] and ansi["textstyle"] == "ROMANS"
with pytest.raises(ValueError, match="preset"):
describe_preset("din")
# ── resolve_dimstyle ────────────────────────────────────────────────────────
def test_none_preset_is_the_iso25_base():
assert resolve_dimstyle(None, None) == ISO_25_EXPECTED
assert resolve_dimstyle("ISO-25", {}) == ISO_25_EXPECTED
assert resolve_dimstyle("ansi", None) == ANSI_EXPECTED
def test_overrides_apply_on_top_and_are_upper_cased_and_typed():
values = resolve_dimstyle("iso-25", {"dimtxt": 3, "DIMDEC": 3.0, "dimdsep": "."})
assert values["DIMTXT"] == 3.0 and type(values["DIMTXT"]) is float
assert values["DIMDEC"] == 3 and type(values["DIMDEC"]) is int
assert values["DIMDSEP"] == "."
assert values["DIMASZ"] == 2.5, "untouched values stay the preset's"
def test_resolve_leaves_the_preset_table_untouched():
resolve_dimstyle("iso-25", {"DIMTXT": 9.0})
assert PRESETS["iso-25"]["DIMTXT"] == 2.5
@pytest.mark.parametrize(
("overrides", "fragment"),
[
({"DIMFOO": 1}, "DIMFOO"),
({"DIMDEC": 9}, "DIMDEC"),
({"DIMDEC": -1}, "DIMDEC"),
({"DIMDEC": 2.5}, "whole number"),
({"DIMTXT": 0}, "DIMTXT"),
({"DIMASZ": -1}, "DIMASZ"),
({"DIMTAD": 5}, "DIMTAD"),
({"DIMTIH": 2}, "DIMTIH"),
({"DIMDSEP": ",,"}, "DIMDSEP"),
({"DIMDSEP": ""}, "DIMDSEP"),
({"DIMLWD": 27}, "DIMLWD"),
({"DIMLUNIT": 0}, "DIMLUNIT"),
({"DIMZIN": 16}, "DIMZIN"),
({"DIMTXSTY": ""}, "DIMTXSTY"),
({"DIMTXSTY": "a/b"}, "DIMTXSTY"),
({"DIMLFAC": 0}, "DIMLFAC"),
({"DIMTFAC": 0}, "DIMTFAC"),
({"DIMCLRT": 257}, "DIMCLRT"),
({"DIMRND": -0.5}, "DIMRND"),
({"DIMSCALE": float("nan")}, "DIMSCALE"),
],
)
def test_out_of_range_or_unknown_overrides_are_refused_by_name(overrides, fragment):
with pytest.raises(ValueError, match=fragment):
resolve_dimstyle("iso-25", overrides)
@pytest.mark.parametrize(
("overrides", "fragment"),
[
({"DIMTXT": "2.5"}, "DIMTXT"),
({"DIMTAD": True}, "DIMTAD"),
({"DIMDSEP": 44}, "DIMDSEP"),
({"DIMBLK": 0}, "DIMBLK"),
],
)
def test_wrong_types_are_a_type_error_naming_the_key(overrides, fragment):
with pytest.raises(TypeError, match=fragment):
resolve_dimstyle("iso-25", overrides)
def test_unknown_preset_is_refused():
with pytest.raises(ValueError, match="preset"):
resolve_dimstyle("din", None)
with pytest.raises(TypeError, match="overrides"):
resolve_dimstyle("iso-25", [("DIMTXT", 2.5)])
def test_validate_overrides_alone_is_what_modify_uses():
assert validate_overrides(None) == {}
assert validate_overrides({"dimgap": -1}) == {"DIMGAP": -1.0}, "negative gap boxes the text"
assert check_dim_value("dimlwe", 25) == 25
assert check_dim_value("DIMBLK", "_OBLIQUE") == "_OBLIQUE"
# ── text styles ─────────────────────────────────────────────────────────────
def test_text_presets_are_the_four_spec_fonts():
assert TEXT_PRESETS == {
"ISOCP": ("isocp.shx", 1.0, 0.0),
"ISOCPEUR": ("isocpeur.ttf", 1.0, 0.0),
"ARIAL": ("arial.ttf", 1.0, 0.0),
"ROMANS": ("romans.shx", 1.0, 0.0),
}
@pytest.mark.parametrize(
("font", "expected"),
[
("ISOCP", "isocp.shx"),
("isocp", "isocp.shx"),
("isocp.shx", "isocp.shx"),
("ISOCP.SHX", "isocp.shx"),
("ISOCPEUR", "isocpeur.ttf"),
("arial", "arial.ttf"),
("Arial.ttf", "arial.ttf"),
("romans.shx", "romans.shx"),
],
)
def test_a_preset_font_resolves_known(font, expected):
assert resolve_font(font) == (expected, True)
def test_an_unknown_font_passes_through_unknown_never_refused():
assert resolve_font("simplex.shx") == ("simplex.shx", False)
assert resolve_font(" c:/fonts/custom.ttf ") == ("c:/fonts/custom.ttf", False)
def test_empty_or_control_font_names_are_refused():
with pytest.raises(ValueError, match="font"):
resolve_font("")
with pytest.raises(ValueError, match="font"):
resolve_font("bad\nfont.shx")
with pytest.raises(TypeError, match="font"):
resolve_font(None)
def test_validate_textstyle_types_the_request():
spec = validate_textstyle(" ISOCP ", "isocp", 0, 1, 0)
assert spec == {
"name": "ISOCP",
"font_file": "isocp.shx",
"known": True,
"height": 0.0,
"width_factor": 1.0,
"oblique_deg": 0.0,
}
@pytest.mark.parametrize(
("kwargs", "fragment"),
[
({"name": ""}, "name"),
({"name": "A:B"}, "name"),
({"height": -1}, "height"),
({"width_factor": 0}, "width_factor"),
({"oblique_deg": 86}, "oblique_deg"),
({"oblique_deg": -90}, "oblique_deg"),
],
)
def test_validate_textstyle_refuses_by_field(kwargs, fragment):
base = {
"name": "T",
"font": "arial.ttf",
"height": 0.0,
"width_factor": 1.0,
"oblique_deg": 0.0,
}
base.update(kwargs)
with pytest.raises(ValueError, match=fragment):
validate_textstyle(**base)
def test_validate_textstyle_refuses_wrong_types():
with pytest.raises(TypeError, match="width_factor"):
validate_textstyle("T", "arial.ttf", 0.0, "1", 0.0)
with pytest.raises(TypeError, match="height"):
validate_textstyle("T", "arial.ttf", True, 1.0, 0.0)
# ── multileader styles ──────────────────────────────────────────────────────
def test_mleader_presets_match_the_plan():
assert MLEADER_PRESETS == {
"iso": {"arrow_size": 2.5, "landing_gap": 1.0, "text_style": "ISOCP", "text_height": 2.5},
"ansi": {"arrow_size": 3.0, "landing_gap": 1.5, "text_style": "ROMANS", "text_height": 3.0},
}
assert MLEADER_KEYS == ("arrow_size", "landing_gap", "text_style", "text_height")
def test_resolve_mleaderstyle_applies_overrides():
values = resolve_mleaderstyle("ISO", {"arrow_size": 3, "text_style": " ARIAL "})
assert values == {
"arrow_size": 3.0,
"landing_gap": 1.0,
"text_style": "ARIAL",
"text_height": 2.5,
}
assert resolve_mleaderstyle("ansi") == MLEADER_PRESETS["ansi"]
assert resolve_mleaderstyle("iso", {"landing_gap": 0})["landing_gap"] == 0.0
@pytest.mark.parametrize(
("preset", "overrides", "exc", "fragment"),
[
("din", None, ValueError, "preset"),
(None, None, ValueError, "preset"),
("iso", {"colour": 1}, ValueError, "colour"),
("iso", {"arrow_size": 0}, ValueError, "arrow_size"),
("iso", {"text_height": -2}, ValueError, "text_height"),
("iso", {"text_style": ""}, ValueError, "text_style"),
("iso", {"text_style": "a|b"}, ValueError, "text_style"),
("iso", {"arrow_size": "2.5"}, TypeError, "arrow_size"),
("iso", ["arrow_size"], TypeError, "overrides"),
],
)
def test_resolve_mleaderstyle_refuses_by_name(preset, overrides, exc, fragment):
with pytest.raises(exc, match=fragment):
resolve_mleaderstyle(preset, overrides)
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