micheleandCursor
edbb47a08b
Skip the model (and the credit gate) when LCSC/DigiKey already list C/V/Z, when the BOM value is a single R/C/L/FB token, or when the MPN is an LQW18AN inductor. Ferrite beads keep impedance, not invented henries; value-only specs stay out of the shared library. Co-authored-by: Cursor <cursoragent@cursor.com>
86 lines
2.8 KiB
Python
86 lines
2.8 KiB
Python
from pathlib import Path
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from backend.services.datasheet_finder import find_local_pdf
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from backend.services.passive_from_mpn import specs_from_mpn
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def test_walsin_c0g_18pf():
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model = specs_from_mpn("0805CG180J500NT")
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assert model is not None
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specs = model.specs
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assert specs.specs_type == "capacitor"
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assert abs(specs.value_farads - 18e-12) < 1e-15
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assert specs.package == "0805"
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assert specs.dielectric == "C0G"
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assert specs.tolerance == "±5%"
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assert specs.voltage_rating_v == "50V"
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def test_avx_c0g_150pf():
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model = specs_from_mpn("08055A151FAT2A")
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assert model is not None
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specs = model.specs
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assert abs(specs.value_farads - 150e-12) < 1e-15
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assert specs.package == "0805"
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assert specs.dielectric == "C0G"
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assert specs.voltage_rating_v == "50V"
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def test_chip_resistor_from_mpn():
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model = specs_from_mpn("FRC0805F1212TS")
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assert model is not None
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assert abs(model.specs.value_ohms - 12100) < 0.1
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assert model.specs.package == "0805"
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assert model.specs.tolerance == "±1%"
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model = specs_from_mpn("0805W8F2201T5E")
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assert model is not None
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assert abs(model.specs.value_ohms - 2200) < 0.1
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def test_murata_lqw18an():
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model = specs_from_mpn("LQW18AN12NG00D")
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assert model is not None
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assert model.specs.specs_type == "inductor"
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assert abs(model.specs.value_henries - 12e-9) < 1e-15
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assert model.specs.package == "0603"
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assert model.specs.tolerance == "±2%"
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model = specs_from_mpn("LQW18AN18NJ00D")
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assert abs(model.specs.value_henries - 18e-9) < 1e-15
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assert model.specs.tolerance == "±5%"
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model = specs_from_mpn("LQW18AN2N2D00D")
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assert abs(model.specs.value_henries - 2.2e-9) < 1e-15
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assert model.specs.tolerance == "±0.5nH"
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model = specs_from_mpn("LQW18ANR10G00D")
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assert abs(model.specs.value_henries - 100e-9) < 1e-15
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def test_skips_opaque_murata_and_bare_value():
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assert specs_from_mpn("GRM21A5C2J200JA01") is None
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assert specs_from_mpn("18pF") is None
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assert specs_from_mpn("CH340E") is None
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def test_find_local_pdf_family_vs_orderable(tmp_path: Path):
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pdf = tmp_path / "ESP32-S31-WROOM-3-N16R16V.pdf"
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pdf.write_bytes(b"%PDF-1.4\n" + b"x" * 100)
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hit = find_local_pdf(tmp_path, "ESP32-S31-WROOM-3")
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assert hit is not None
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assert hit.name == pdf.name
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other = tmp_path / "only"
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other.mkdir()
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family = other / "ESP32-S31-WROOM-3.pdf"
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family.write_bytes(b"%PDF-1.4\n" + b"y" * 100)
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hit = find_local_pdf(other, "ESP32-S31-WROOM-3-N16R16V")
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assert hit is not None
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assert hit.name == family.name
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def test_find_local_pdf_does_not_steal_sibling_die(tmp_path: Path):
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(tmp_path / "CH340E.pdf").write_bytes(b"%PDF-1.4\n" + b"x" * 100)
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assert find_local_pdf(tmp_path, "CH340") is None
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