Keep OnCo provenance headers on adapted UI files.

CONTENT-WP-0002-T08 requires each adapted file to name the pinned commit, the OnCo copyright, and ui/NOTICE.

Assistant: grok
Assistant-Session: 01a1346c-fdff-7741-b1af-b7283661554b

tests/test_ui_provenance.py

@@ -0,0 +1,64 @@
+"""Adapted UI files keep the OnCo pin, copyright, and NOTICE."""
+
+from __future__ import annotations
+
+import importlib.util
+import unittest
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+spec = importlib.util.spec_from_file_location("check_ui_provenance", ROOT / "scripts" / "check_ui_provenance.py")
+provenance = importlib.util.module_from_spec(spec)
+assert spec.loader is not None
+spec.loader.exec_module(provenance)
+
+PIN = "b594d7433bf4e408b44215e25e5304696d6f840e"
+
+
+class UiProvenance(unittest.TestCase):
+    def test_pin_matches_the_baseline_file(self) -> None:
+        self.assertEqual(provenance.load_pin(), PIN)
+
+    def test_rejects_an_adapted_file_without_the_pin(self) -> None:
+        sample = """
+        /**
+         * Adapted from OnCo SkipLink.
+         * Copyright (c) 2026 OnCo. MIT License. See ui/NOTICE.
+         */
+        """
+        problems = provenance.header_problems(sample, "sample", PIN)
+        self.assertEqual(len(problems), 1)
+        self.assertIn(PIN, problems[0])
+
+    def test_accepts_a_complete_header(self) -> None:
+        sample = f"""
+        /*
+         * Reduced from OnCo src/components/filters/ResultsTable.tsx
+         * https://github.com/judegomila/OnCo @ {PIN}
+         * Copyright (c) 2026 OnCo. MIT License. See ui/NOTICE.
+         */
+        """
+        self.assertEqual(provenance.header_problems(sample, "sample", PIN), [])
+
+    def test_ignores_a_file_that_was_not_copied(self) -> None:
+        sample = """
+        /**
+         * Generic record page.
+         * OnCo EntityDetail was not copied.
+         */
+        """
+        self.assertEqual(provenance.header_problems(sample, "sample", PIN), [])
+
+    def test_notice_requires_the_permission_text(self) -> None:
+        short = f"Copyright (c) 2026 OnCo\nMIT License\n{PIN}\n"
+        problems = provenance.notice_problems(short, PIN)
+        self.assertTrue(problems)
+        self.assertIn("Permission is hereby granted", problems[0])
+
+    def test_shipped_ui_keeps_headers_and_notices(self) -> None:
+        self.assertEqual(provenance.tree_problems(), [])
+
+
+if __name__ == "__main__":
+    unittest.main()