70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
"""§6.5.1 file-level codec — parse, caps, required columns (PUC-5a fixtures)."""
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import pytest
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from app.domains.products import FileRejected
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from app.domains.products.codec import parse_csv
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def _csv(*lines: str) -> bytes:
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return ("\n".join(lines) + "\n").encode()
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GOOD = _csv(
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"Handle,Title,Variant Price,Bogus Column",
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"moon-mug,Moon Mug,18.00,x",
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"star-tee,Star Tee,24.00,y",
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)
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def test_parses_header_rows_and_unknown_columns():
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parsed = parse_csv(GOOD)
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assert parsed.dialect == "canonical"
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assert parsed.unknown_columns == ["Bogus Column"]
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assert [r.line_number for r in parsed.rows] == [2, 3]
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assert parsed.rows[0].cells["Handle"] == "moon-mug"
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assert parsed.rows[0].cells["Variant Price"] == "18.00"
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assert "Bogus Column" not in parsed.rows[0].cells
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def test_bom_tolerated():
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parsed = parse_csv(b"\xef\xbb\xbf" + GOOD)
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assert parsed.rows[0].cells["Handle"] == "moon-mug"
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def test_quoted_cells_rfc4180():
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parsed = parse_csv(_csv("Handle,Title,Tags", 'mug,"The ""Best"" Mug","a, b"'))
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assert parsed.rows[0].cells["Title"] == 'The "Best" Mug'
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assert parsed.rows[0].cells["Tags"] == "a, b"
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def test_empty_rows_skipped_short_rows_padded():
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parsed = parse_csv(_csv("Handle,Title,Vendor", "mug,Mug", "", ",,", "tee,Tee,Acme"))
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assert [r.cells["Handle"] for r in parsed.rows] == ["mug", "tee"]
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assert parsed.rows[0].cells["Vendor"] == ""
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@pytest.mark.parametrize(
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"data,code",
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[
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(b"\xff\xfe\x00garbage\x00", "not_csv"),
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(b"", "not_csv"),
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(_csv("Title,Vendor", "Mug,Acme"), "missing_required_column"),
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(_csv("Handle,Vendor", "mug,Acme"), "missing_required_column"),
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(
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_csv("Handle,Title", *(f"h{i},T{i}" for i in range(5001))),
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"too_many_rows",
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),
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(b"Handle,Title\n" + b"x" * (10 * 1024 * 1024), "file_too_large"),
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],
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)
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def test_file_level_rejections(data, code):
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with pytest.raises(FileRejected) as exc:
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parse_csv(data)
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assert exc.value.code == code
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def test_missing_column_message_names_the_column():
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with pytest.raises(FileRejected) as exc:
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parse_csv(_csv("Handle,Vendor", "mug,Acme"))
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assert "'Title'" in exc.value.message
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