[Test] Removed numpy.compact in numpy>=2.0.0

[MGAMZ]

Motivation

This PR is a sub-PR of #1665.

According to https://numpy.org/devdocs/release/2.0.0-notes.html#deprecations, np.compat has been deprecated, as Python 2 is no longer supported.

This causes several failures in pytest: tests/test_config/test_lazy.py. Fixing this issue now.

Modification

test_lazy.py utilize numpy.compat as an example numpy module to test if the lazy import function can properly working. So simply replacing it with any other existing numpy module, numpy.fft for this PR.

[MGAMZ]

When running pytest locally with single GPU, there are currently the following pytest errors.

======================================================== short test summary info =========================================================
FAILED tests/test_config/test_config.py::TestConfig::test_dump - RuntimeError
FAILED tests/test_config/test_config.py::TestConfig::test_deepcopy - RuntimeError
FAILED tests/test_config/test_config.py::TestConfig::test_copy - RuntimeError
FAILED tests/test_config/test_config.py::TestConfig::test_lazy_import - RuntimeError
FAILED tests/test_config/test_lazy.py::TestImportTransformer::test_lazy_module - ModuleNotFoundError: Failed to import numpy in None, line 5 for No module named 'numpy.compat'
FAILED tests/test_fileio/test_fileclient.py::TestFileClient::test_http_backend[http-None] - urllib.error.URLError: <urlopen error [Errno 111] Connection refused>
FAILED tests/test_fileio/test_fileclient.py::TestFileClient::test_http_backend[None-http] - urllib.error.URLError: <urlopen error [Errno 111] Connection refused>
FAILED tests/test_hooks/test_sync_buffers_hook.py::TestSyncBuffersHook::test_sync_buffers_hook - RuntimeError: Process 1 exited with error code 10 and exception:
FAILED tests/test_hooks/test_sync_buffers_hook.py::TestSyncBuffersHook::test_with_runner - RuntimeError: Process 1 exited with error code 10 and exception:
FAILED tests/test_logging/test_message_hub.py::TestMessageHub::test_get_scalars - Failed: DID NOT RAISE <class 'AssertionError'>
FAILED tests/test_model/test_model_utils.py::test_convert_syncbn - ValueError: Default process group has not been initialized, please make sure to call init_process_group.
FAILED tests/test_optim/test_optimizer/test_optimizer.py::TestBuilder::test_build_optimizer - AttributeError: 'str' object has no attribute 'update'
FAILED tests/test_optim/test_optimizer/test_optimizer_wrapper.py::TestAmpOptimWrapper::test_init - AssertionError: <torch.amp.grad_scaler.GradScaler object at 0x7f96d4eb6570> is not an instance of <class 'torch.cuda.amp.grad_scaler....
FAILED tests/test_runner/test_runner.py::TestRunner::test_build_optim_wrapper - AttributeError: 'str' object has no attribute 'update'
FAILED tests/test_runner/test_runner.py::TestRunner::test_checkpoint - AttributeError: 'str' object has no attribute 'update'
FAILED tests/test_runner/test_runner.py::TestRunner::test_train - AttributeError: 'str' object has no attribute 'update'
FAILED tests/test_strategies/test_fsdp.py::TestStrategy::test_run_strategy - torch.multiprocessing.spawn.ProcessRaisedException: 
FAILED tests/test_utils/test_package_utils.py::test_get_install_path - importlib.metadata.PackageNotFoundError: No package metadata was found for unknown
FAILED tests/test_utils/test_timer.py::test_timer_run - assert 0.03835725784301758 < 0.03
FAILED tests/test_utils/test_timer.py::test_timer_context - AssertionError: assert 'time: 1.1s\n' == 'time: 1.0s\n'
FAILED tests/test_visualizer/test_vis_backend.py::TestAimVisBackend::test_experiment - ImportError: Please run "pip install aim" to install aim
FAILED tests/test_visualizer/test_vis_backend.py::TestAimVisBackend::test_add_config - ImportError: Please run "pip install aim" to install aim
FAILED tests/test_visualizer/test_vis_backend.py::TestAimVisBackend::test_add_image - ImportError: Please run "pip install aim" to install aim
FAILED tests/test_visualizer/test_vis_backend.py::TestAimVisBackend::test_add_scalar - ImportError: Please run "pip install aim" to install aim
FAILED tests/test_visualizer/test_vis_backend.py::TestAimVisBackend::test_add_scalars - ImportError: Please run "pip install aim" to install aim
FAILED tests/test_visualizer/test_vis_backend.py::TestAimVisBackend::test_close - ImportError: Please run "pip install aim" to install aim
================================= 26 failed, 907 passed, 89 skipped, 2994 warnings in 628.08s (0:10:28) ==================================

I'm trying to fix these errors.

[MGAMZ]

Now test_lazy is fixed.

python3 -m pytest tests/test_config/test_lazy.py -v
=================================================== test session starts ===================================================
platform linux -- Python 3.13.9, pytest-8.4.1, pluggy-1.6.0 -- /home/mgam/miniforge3/envs/pt/bin/python3
cachedir: .pytest_cache
rootdir: /home/mgam/mgam_repos/mmengine
configfile: pytest.ini
plugins: anyio-4.9.0, hydra-core-1.3.2
collected 4 items                                                                                                         

tests/test_config/test_lazy.py::TestImportTransformer::test_lazy_module PASSED                                      [ 25%]
tests/test_config/test_lazy.py::TestLazyObject::test_build PASSED                                                   [ 50%]
tests/test_config/test_lazy.py::TestLazyObject::test_init PASSED                                                    [ 75%]
tests/test_config/test_lazy.py::TestLazyAttr::test_build PASSED                                                     [100%]

==================================================== 4 passed in 0.15s ====================================================

[Copilot]

Pull Request Overview

This PR fixes pytest failures caused by the deprecated numpy.compat module by replacing it with numpy.fft in test files. NumPy 2.0 removed the compat module as Python 2 is no longer supported.

Key Changes:

• Replaced numpy.compat imports with numpy.fft in test files
• Updated test assertions and variable names to reference fft instead of compat
• Updated code comments to reflect the module name change

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
tests/test_config/test_lazy.py	Replaced all references to numpy.compat with numpy.fft in imports, assertions, and variable names
tests/data/config/lazy_module_config/test_ast_transform.py	Updated import statement from numpy.compat to numpy.fft

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[MGAMZ]

@HAOCHENYE This one is ready to be reviewed.