First deployment

tests/test_p16_translation_and_refetch.py

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+import pytest
+
+from backend.cli import is_unrelated_image_candidate, resolve_article_id_from_permalink
+from backend.news_service import (
+    GENERIC_FINANCE_FALLBACK_URL,
+    fetch_royalty_free_image,
+    validate_translation_quality,
+)
+
+
+def test_permalink_resolution_supports_numeric_and_query_formats():
+    assert resolve_article_id_from_permalink("123") == 123
+    assert resolve_article_id_from_permalink("/?article=456") == 456
+    assert resolve_article_id_from_permalink("https://x.test/?article=789") == 789
+    assert resolve_article_id_from_permalink("bad") is None
+
+
+def test_unrelated_image_candidate_filters_pet_terms():
+    assert is_unrelated_image_candidate("https://img.example.com/cat-photo.jpg", "Example")
+    assert is_unrelated_image_candidate("https://img.example.com/market.jpg", "Wildlife digest")
+    assert not is_unrelated_image_candidate(
+        "https://img.example.com/nasdaq-chart.jpg", "Market Desk"
+    )
+
+
+def test_translation_quality_validation_accepts_valid_tamil_and_malayalam():
+    ta_ok, ta_reason = validate_translation_quality(
+        "ஏஐ முதலீட்டில் சந்தை ஏற்றம்",
+        "ஏஐ சார்ந்த முதலீட்டு செய்திகளால் இந்திய சந்தையில் உயர்வு ஏற்பட்டது.",
+        "ta",
+    )
+    ml_ok, ml_reason = validate_translation_quality(
+        "എഐ നിക്ഷേപ വാർത്തകൾ വിപണിയെ ഉയർത്തി",
+        "എഐ കേന്ദ്രിത സാമ്പത്തിക റിപ്പോർട്ടുകൾ മൂലം മാർക്കറ്റ് മുന്നേറ്റം രേഖപ്പെടുത്തി.",
+        "ml",
+    )
+    assert ta_ok and ta_reason is None
+    assert ml_ok and ml_reason is None
+
+
+def test_translation_quality_validation_rejects_script_mismatch_and_gibberish():
+    mismatch_ok, mismatch_reason = validate_translation_quality(
+        "AI market rally",
+        "Stocks up after AI earnings beat expectations.",
+        "ta",
+    )
+    gibberish_ok, gibberish_reason = validate_translation_quality(
+        "aaaaaaaabbbbbbbb",
+        "xxxxxxxxyyyyyyyy",
+        "ml",
+    )
+    assert not mismatch_ok
+    assert mismatch_reason == "script-mismatch"
+    assert not gibberish_ok
+    assert gibberish_reason in {"repeated-sequence", "script-mismatch"}
+
+
+@pytest.mark.anyio
+async def test_finance_refetch_guard_rejects_pet_image_and_uses_finance_fallback(monkeypatch):
+    async def fake_provider(_query: str):
+        return "https://example.com/cat-on-wall-street.jpg", "cat photo"
+
+    monkeypatch.setattr(
+        "backend.news_service.get_enabled_providers",
+        lambda: [("fake", fake_provider)],
+    )
+    monkeypatch.setattr("backend.config.ROYALTY_IMAGE_MCP_ENDPOINT", "")
+
+    image_url, credit = await fetch_royalty_free_image("stock market rally and earnings")
+    assert image_url == GENERIC_FINANCE_FALLBACK_URL
+    assert credit == "Finance-safe fallback"