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

tests/test_config.py

@@ -0,0 +1,34 @@
+"""Tests for config module — _env_int error path."""
+
+import os
+from unittest.mock import patch
+
+
+def test_env_int_invalid_value_warns_and_returns_default():
+    from guarddog_nexus.config import _env_int
+
+    os.environ["TEST_PORT"] = "notanumber"
+
+    with patch("logging.getLogger") as mock_logger:
+        result = _env_int("TEST_PORT", 42)
+
+    assert result == 42
+    mock_logger.return_value.warning.assert_called_once()
+
+    del os.environ["TEST_PORT"]
+
+
+def test_env_int_missing_returns_default():
+    from guarddog_nexus.config import _env_int
+
+    os.environ.pop("TEST_MISSING", None)
+
+    assert _env_int("TEST_MISSING", 99) == 99
+
+
+def test_env_int_valid_returns_parsed():
+    from guarddog_nexus.config import _env_int
+
+    os.environ["TEST_VALID"] = "8080"
+    assert _env_int("TEST_VALID", 42) == 8080
+    del os.environ["TEST_VALID"]