test: Add tests for export cleanup tracking and module aliasing behavior

tests/test_module_aliasing.py

@@ -0,0 +1,40 @@
+"""
+Tiny tests to verify module aliasing behavior between 'src.*' and top-level
+modules for compatibility with test patching.
+"""
+
+import os
+import sys
+import importlib
+
+
+# Ensure 'src' is importable like other tests do
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "src"))
+
+
+def test_graph_manager_aliasing_shared_module_object():
+    import src.graph_manager as gm_src
+
+    gm_top = importlib.import_module("graph_manager")
+
+    # Both import paths should refer to the same module object
+    assert gm_src is gm_top
+
+    # Patching a symbol on one should reflect in the other
+    sentinel = object()
+    setattr(gm_top, "ALIAS_TEST_SENTINEL", sentinel)
+    assert getattr(gm_src, "ALIAS_TEST_SENTINEL") is sentinel
+
+
+def test_logger_aliasing_shared_module_object():
+    import src.logger as logger_src
+
+    logger_top = importlib.import_module("logger")
+
+    # Both import paths should refer to the same module object
+    assert logger_src is logger_top
+
+    # Changing a config attribute should be visible via the other name
+    new_path = "/tmp/thechart-test-alias"
+    logger_top.LOG_PATH = new_path
+    assert logger_src.LOG_PATH == new_path