mirror of
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88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
"""Unit tests for backend.app.utils.http."""
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from urllib.parse import unquote
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import pytest
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from backend.app.utils.http import build_content_disposition, safe_download_filename
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@pytest.mark.parametrize(
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("filename", "expected_ascii_fallback"),
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[
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("hello.gcode.3mf", "hello.gcode.3mf"),
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("龙泡泡石墩子_p2s_ok.gcode.3mf", "p2s_ok.gcode.3mf"),
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("こんにちは.gcode.3mf", "gcode.3mf"),
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("résumé.gcode.3mf", "rsum.gcode.3mf"),
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("مرحبا.gcode.3mf", "gcode.3mf"),
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("文件.3mf", "3mf"),
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("模型.gcode.3mf", "gcode.3mf"),
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("project_2026-05-08.zip", "project_2026-05-08.zip"),
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("___.zip", "zip"),
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("", "download"),
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],
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)
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def test_ascii_fallback_strips_non_ascii(filename: str, expected_ascii_fallback: str) -> None:
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header = build_content_disposition(filename)
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assert f'filename="{expected_ascii_fallback}"' in header
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@pytest.mark.parametrize(
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"filename",
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[
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"龙泡泡石墩子_p2s_ok.gcode.3mf",
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"こんにちは.gcode.3mf",
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"résumé.gcode.3mf",
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"مرحبا.gcode.3mf",
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"文件.3mf",
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"hello world (final).pdf",
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"你好/世界.pdf",
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],
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)
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def test_filename_star_round_trips_to_original(filename: str) -> None:
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header = build_content_disposition(filename)
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assert "filename*=UTF-8''" in header
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encoded = header.split("filename*=UTF-8''", 1)[1]
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assert unquote(encoded) == filename
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def test_header_is_latin1_encodable() -> None:
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"""Starlette/uvicorn encodes response headers as latin-1 — the helper's
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output MUST round-trip through latin-1 without raising."""
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for filename in [
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"龙泡泡石墩子_p2s_ok.gcode.3mf",
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"こんにちは.gcode.3mf",
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"résumé.gcode.3mf",
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"مرحبا.gcode.3mf",
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'"quoted"name.zip',
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"back\\slash.zip",
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]:
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header = build_content_disposition(filename)
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header.encode("latin-1")
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def test_disposition_param_is_respected() -> None:
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assert build_content_disposition("foo.pdf", disposition="inline").startswith("inline; ")
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assert build_content_disposition("foo.pdf").startswith("attachment; ")
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def test_quotes_and_backslashes_stripped_from_ascii_fallback() -> None:
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header = build_content_disposition('a"b\\c.pdf')
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assert 'filename="abc.pdf"' in header
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def test_safe_download_filename_bounds_unicode_and_preserves_normal_suffixes() -> None:
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filename = f"{'界' * 300}.gcode.3mf"
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result = safe_download_filename(filename)
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assert len(result) == 200
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assert result.endswith(".gcode.3mf")
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def test_safe_download_filename_drops_path_control_chars_and_pathological_suffix() -> None:
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result = safe_download_filename(f"../folder/bad\x00name.{'x' * 300}")
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assert "/" not in result
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assert "\x00" not in result
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assert len(result) == 200
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