Add host correlation and assurance coverage

tests/test_assurance.py

@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+import tempfile
+import unittest
+from pathlib import Path
+
+from enodia_sentinel import assurance
+from enodia_sentinel.config import Config
+
+
+class TestHashChain(unittest.TestCase):
+    def test_artifact_records_chain_to_previous_hash(self):
+        with tempfile.TemporaryDirectory() as d:
+            cfg = Config()
+            cfg.log_dir = Path(d)
+            one = cfg.log_dir / "one.txt"
+            two = cfg.log_dir / "two.txt"
+            one.write_text("one")
+            two.write_text("two")
+            r1 = assurance.append_artifact(cfg, "test", one)
+            r2 = assurance.append_artifact(cfg, "test", two)
+            self.assertEqual(r2["prev_hash"], r1["chain_hash"])
+            summary = assurance.summary(cfg)
+            self.assertEqual(summary["count"], 2)
+            self.assertEqual(summary["last_hash"], r2["chain_hash"])
+
+
+if __name__ == "__main__":
+    unittest.main()