Looks like

unittest.mock.patch

is tripping up pants

patcher = unittest.mock.patch(
            "snowflake.ingest.SimpleIngestManager",
            return_value=unittest.mock.MagicMock(autospec=True),
        )
>       ingest_manager_constructor = patcher.start()

dms-object-manager/dms_object_manager/test_snowflake_lz.py:64: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/opt/homebrew/Cellar/python@3.11/3.11.9_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/unittest/mock.py:1594: in start
    result = self.__enter__()
/opt/homebrew/Cellar/python@3.11/3.11.9_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/unittest/mock.py:1430: in __enter__
    self.target = self.getter()
/opt/homebrew/Cellar/python@3.11/3.11.9_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/pkgutil.py:700: in resolve_name
    mod = importlib.import_module(modname)
/opt/homebrew/Cellar/python@3.11/3.11.9_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
<frozen importlib._bootstrap>:1204: in _gcd_import
    ???
<frozen importlib._bootstrap>:1176: in _find_and_load
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

name = 'snowflake', import_ = <function _gcd_import at 0x10456bd80>

>   ???
E   ModuleNotFoundError: No module named 'snowflake'

Adding

import snowflake.ingest

to the test file fixes it but not sure if there's a better way

There's a few options: • a dummy import along those lines ◦ (for the specifics, personally, I prefer using

patch.object

, e.g.

from snowflake import ingest

patch.object(ingest, ingset.SimpleIngestManager.__name__, ...)

since that works better with "find references" etc. ... although that's most useful when mocking first-party code rather than external dependencies. This'll work well with Pants' inference, as a side effect.) • adding

dependencies=["path/to#snowflake"]

(or whatever the dependency name is) in the BUILD file • using https://www.pantsbuild.org/stable/reference/subsystems/python-infer#string_imports to infer from strings like that

thanks!