Squash Odysseus development history

tests/test_tool_utils_import_clean.py

@@ -0,0 +1,22 @@
+"""Verify src.tool_utils has no project imports beyond src.constants.
+
+If someone adds an import from src.settings, src.database, or any other
+project module inside tool_utils.py, the circular import that this module
+exists to break will silently return a partially-initialized module.
+This test catches that statically.
+"""
+
+import ast
+import pathlib
+
+
+def test_tool_utils_has_no_project_imports():
+    src = pathlib.Path("src/tool_utils.py").read_text()
+    tree = ast.parse(src)
+    for node in ast.walk(tree):
+        if isinstance(node, (ast.Import, ast.ImportFrom)):
+            if isinstance(node, ast.ImportFrom) and node.module:
+                msg = f"Illegal project import in tool_utils.py: {node.module}"
+                assert node.module in ("src.constants",) or not node.module.startswith(
+                    "src."
+                ), msg