feat: 31 new tests, metrics LLM counters, Dockerfile caching, Makefile targets, compose limits, code fixes

tests/test_schemas.py

@@ -0,0 +1,78 @@
+"""Tests for schemas and serialize_finding."""
+
+import datetime
+from unittest.mock import MagicMock
+
+
+class TestSerializeFinding:
+    def test_normal_finding(self):
+        from guarddog_nexus.schemas import serialize_finding
+
+        finding = MagicMock()
+        finding.id = 42
+        finding.scan_id = 7
+        finding.report = {"verdict": "safe"}
+        finding.created_at = datetime.datetime(2026, 1, 1, tzinfo=datetime.timezone.utc)
+        finding.data = {
+            "rule": "shady-links",
+            "severity": "WARNING",
+            "message": "Suspicious URL",
+            "location": "setup.py:15",
+            "code": "url = 'http://evil.com'",
+        }
+
+        result = serialize_finding(finding)
+
+        assert result["id"] == 42
+        assert result["scan_id"] == 7
+        assert result["rule"] == "shady-links"
+        assert result["severity"] == "WARNING"
+        assert result["report"] == {"verdict": "safe"}
+        assert result["created_at"] == "2026-01-01T00:00:00+00:00"
+
+    def test_created_at_none(self):
+        from guarddog_nexus.schemas import serialize_finding
+
+        finding = MagicMock()
+        finding.id = 1
+        finding.scan_id = 1
+        finding.report = None
+        finding.created_at = None
+        finding.data = {"rule": "test", "message": "msg"}
+
+        result = serialize_finding(finding)
+
+        assert result["created_at"] is None
+        assert result["report"] is None
+
+    def test_missing_data_fields_default_to_empty_string(self):
+        from guarddog_nexus.schemas import serialize_finding
+
+        finding = MagicMock()
+        finding.id = 1
+        finding.scan_id = 1
+        finding.report = None
+        finding.created_at = None
+        finding.data = {"rule": "only-rule"}
+
+        result = serialize_finding(finding)
+
+        assert result["rule"] == "only-rule"
+        assert result["severity"] == ""
+        assert result["message"] == ""
+
+    def test_data_values_none_become_empty_strings(self):
+        from guarddog_nexus.schemas import serialize_finding
+
+        finding = MagicMock()
+        finding.id = 1
+        finding.scan_id = 1
+        finding.report = None
+        finding.created_at = None
+        finding.data = {"rule": None, "severity": None, "message": None}
+
+        result = serialize_finding(finding)
+
+        assert result["rule"] == ""
+        assert result["severity"] == ""
+        assert result["message"] == ""