test(english-gonol): prove OEWN sense source order survives ingestion

Author: erinepshovel-code

research/english-gonol/tests/test_source_order.py

@@ -0,0 +1,61 @@
+# === CHECKS ===
+# id: check_oewn_source_preserves_sense_order
+#   proves: oewn_source_preserves_sense_order
+#   call: self::test_loader_preserves_source_sense_order
+#   requires: python3, pyyaml
+#   timeout: 30
+#   mutates: filesystem
+#   cleanup: tempdir_teardown
+# === END CHECKS ===
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+import english_gonol.language.source as source
+
+
+def test_loader_preserves_source_sense_order(
+    tmp_path: Path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    pytest.importorskip("yaml")
+
+    # The identifiers are intentionally reverse-lexicographic. Sorting them
+    # would silently destroy the source ordinal evidence used by construction.
+    (tmp_path / "frames.yaml").write_text("{}\n", encoding="utf-8")
+    (tmp_path / "entries-test.yaml").write_text(
+        """word:\n"
+        "  n:\n"
+        "    sense:\n"
+        "      - id: z-sense\n"
+        "        synset: s-z\n"
+        "      - id: a-sense\n"
+        "        synset: s-a\n"
+        """,
+        encoding="utf-8",
+    )
+    (tmp_path / "noun.test.yaml").write_text(
+        """s-z:\n"
+        "  partOfSpeech: n\n"
+        "  members: [word]\n"
+        "  definition: [first definition]\n"
+        "s-a:\n"
+        "  partOfSpeech: n\n"
+        "  members: [word]\n"
+        "  definition: [second definition]\n"
+        """,
+        encoding="utf-8",
+    )
+
+    monkeypatch.setattr(source, "OEWN_EXPECTED_WORD_COUNT", 1)
+    monkeypatch.setattr(source, "OEWN_EXPECTED_SYNSET_COUNT", 2)
+
+    snapshot = source.load_oewn_2025(tmp_path)
+    assert len(snapshot.lexemes) == 1
+    assert [sense.sense_id for sense in snapshot.lexemes[0].senses] == [
+        "z-sense",
+        "a-sense",
+    ]