chore: import upstream snapshot with attribution

2026-07-13 12:39:36 +08:00
commit 5bdf4cc89a
423 changed files with 88197 additions and 0 deletions
@@ -0,0 +1,43 @@
+"""Offline tests for the non-blank PDF heuristic.
+
+The decision logic (``_verdict``) is tested directly so it is deterministic
+regardless of whether the optional ``pypdf`` probe is installed; the
+``check_pdf_bytes`` smoke cases only assert pypdf-independent facts.
+"""
+
+from __future__ import annotations
+
+from e2e_monitor.render import _verdict, check_pdf_bytes
+
+
+def test_verdict_true_for_real_pdf_signals() -> None:
+    assert _verdict(is_pdf=True, size=2000, pages=1, has_text=True) is True
+    # probe unavailable (pypdf absent) -> pages/has_text None must not veto a real, large PDF
+    assert _verdict(is_pdf=True, size=2000, pages=None, has_text=None) is True
+
+
+def test_verdict_false_for_blank_or_broken() -> None:
+    assert _verdict(is_pdf=False, size=5000, pages=None, has_text=None) is False  # not a pdf
+    assert _verdict(is_pdf=True, size=100, pages=1, has_text=True) is False        # too small
+    assert _verdict(is_pdf=True, size=5000, pages=1, has_text=False) is False      # no text
+    assert _verdict(is_pdf=True, size=5000, pages=0, has_text=None) is False       # zero pages
+
+
+def test_check_pdf_bytes_rejects_empty() -> None:
+    r = check_pdf_bytes(b"")
+    assert r["is_pdf"] is False
+    assert r["non_blank"] is False
+
+
+def test_check_pdf_bytes_rejects_non_pdf() -> None:
+    r = check_pdf_bytes(b"<html>not a pdf</html>")
+    assert r["is_pdf"] is False
+    assert r["non_blank"] is False
+
+
+def test_check_pdf_bytes_reads_header_and_size() -> None:
+    r = check_pdf_bytes(b"%PDF-1.4\n" + b"x" * 2000)
+    assert r["is_pdf"] is True
+    assert r["size"] >= 1000
+    # non_blank here depends on whether pypdf is installed to parse this
+    # non-structured blob; the _verdict tests cover the decision deterministically.