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Wu ShuwenandSameer Kadam
f36a264571
* fix(docs-check): preserve Mintlify output on Windows * test(docs-check): add Windows regression coverage * fix(docs-check): preserve Mintlify output on Windows --------- Co-authored-by: Sameer Kadam <sameerkadam@Mac.lan>
84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
"""Regression tests for the standalone documentation checker."""
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import runpy
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import subprocess
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import sys
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from pathlib import Path
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def test_mintlify_export_uses_utf8_lossy_capture(monkeypatch):
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"""Mintlify output remains available regardless of the host code page.
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Verifies that:
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- subprocess.run is called with encoding="utf-8" and errors="replace"
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- The Windows EPERM noise filter fires correctly when output is captured
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(i.e. result.stdout is non-empty and "EPERM" reaches the filter)
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"""
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calls = []
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def fake_run(command, **kwargs):
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calls.append((command, kwargs))
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return subprocess.CompletedProcess(
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command,
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1,
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stdout="cleanup EPERM",
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stderr="",
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)
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monkeypatch.setattr(subprocess, "run", fake_run)
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monkeypatch.setattr(sys, "platform", "win32")
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# docs_check.py calls sys.exit(1) when any check fails. If the EPERM
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# noise filter cannot see stdout (because it was None / lost), the
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# Mintlify check reports a failure and sys.exit(1) is raised here.
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runpy.run_path(
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str(Path(__file__).parents[1] / "docs_check.py"),
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run_name="__main__",
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)
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assert calls, "the Mintlify export check did not invoke subprocess.run"
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_, kwargs = calls[-1]
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assert kwargs["encoding"] == "utf-8", (
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"subprocess.run must use explicit UTF-8 encoding; "
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"without it the Windows locale codec silently discards Mintlify output"
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)
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assert kwargs["errors"] == "replace", (
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"errors='replace' is required so invalid bytes produce U+FFFD "
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"instead of raising UnicodeDecodeError and losing the entire stream"
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)
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def test_utf8_bytes_survive_capture():
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"""Bytes valid in UTF-8 but invalid in Windows cp1252 must not be lost.
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This is the minimal reproduction from issue #1578: the three bytes
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0xe2 0xa0 0x8f encode U+2800 (BRAILLE PATTERN BLANK) in UTF-8 but are
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not representable in cp1252. Without encoding="utf-8" the subprocess
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reader thread raises UnicodeDecodeError and result.stdout becomes None,
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making combined == "" and the EPERM/EBUSY noise filter unreachable.
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"""
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code = (
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"import sys; "
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"sys.stdout.buffer.write(bytes([0xe2, 0xa0, 0x8f])); "
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"sys.stdout.flush()"
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)
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result = subprocess.run(
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[sys.executable, "-c", code],
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capture_output=True,
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text=True,
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encoding="utf-8",
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errors="replace",
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)
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assert result.returncode == 0
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assert result.stdout is not None, (
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"stdout must not be None; a UnicodeDecodeError in the reader thread "
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"would have discarded the entire captured stream"
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)
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# The three bytes decode to a single Unicode character (U+280F); with
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# errors="replace" any truly undecodable byte would become U+FFFD instead.
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# Either way the stream is preserved rather than lost — that is the fix.
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assert len(result.stdout.strip()) == 1, (
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"expected exactly one decoded character; "
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"an empty result means the stream was silently lost"
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)
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