conftest.py

# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# tests directory-specific settings - this file is run automatically
# by pytest before any tests are run

import doctest
import os
import sys
import warnings
from os.path import abspath, dirname, join

import _pytest
import pytest

from transformers.testing_utils import (
    HfDoctestModule,
    HfDocTestParser,
    is_torch_available,
    patch_testing_methods_to_collect_info,
    patch_torch_compile_force_graph,
)


NOT_DEVICE_TESTS = {
    "test_tokenization",
    "test_tokenization_mistral_common",
    "test_processing",
    "test_beam_constraints",
    "test_configuration_utils",
    "test_data_collator",
    "test_trainer_callback",
    "test_trainer_utils",
    "test_feature_extraction",
    "test_image_processing",
    "test_image_processor",
    "test_image_transforms",
    "test_optimization",
    "test_retrieval",
    "test_config",
    "test_from_pretrained_no_checkpoint",
    "test_keep_in_fp32_modules",
    "test_gradient_checkpointing_backward_compatibility",
    "test_gradient_checkpointing_enable_disable",
    "test_torch_save_load",
    "test_forward_signature",
    "test_model_get_set_embeddings",
    "test_model_main_input_name",
    "test_correct_missing_keys",
    "test_can_use_safetensors",
    "test_load_save_without_tied_weights",
    "test_tied_weights_keys",
    "test_model_weights_reload_no_missing_tied_weights",
    "test_can_load_ignoring_mismatched_shapes",
    "test_model_is_small",
    "ModelTest::test_pipeline_",  # None of the pipeline tests from PipelineTesterMixin (of which XxxModelTest inherits from) are running on device
    "ModelTester::test_pipeline_",
    "/repo_utils/",
    "/utils/",
}

# allow having multiple repository checkouts and not needing to remember to rerun
# `pip install -e '.[dev]'` when switching between checkouts and running tests.
git_repo_path = abspath(join(dirname(__file__), "src"))
sys.path.insert(1, git_repo_path)

# silence FutureWarning warnings in tests since often we can't act on them until
# they become normal warnings - i.e. the tests still need to test the current functionality
warnings.simplefilter(action="ignore", category=FutureWarning)


def pytest_configure(config):
    config.addinivalue_line("markers", "is_pipeline_test: mark test to run only when pipelines are tested")
    config.addinivalue_line("markers", "is_staging_test: mark test to run only in the staging environment")
    config.addinivalue_line("markers", "accelerate_tests: mark test that require accelerate")
    config.addinivalue_line("markers", "not_device_test: mark the tests always running on cpu")
    config.addinivalue_line("markers", "torch_compile_test: mark test which tests torch compile functionality")
    config.addinivalue_line("markers", "torch_export_test: mark test which tests torch export functionality")
    config.addinivalue_line("markers", "flash_attn_test: mark test which tests flash attention functionality")
    config.addinivalue_line("markers", "flash_attn_3_test: mark test which tests flash attention 3 functionality")

    os.environ["DISABLE_SAFETENSORS_CONVERSION"] = "true"


def pytest_collection_modifyitems(items):
    for item in items:
        if any(test_name in item.nodeid for test_name in NOT_DEVICE_TESTS):
            item.add_marker(pytest.mark.not_device_test)


def pytest_addoption(parser):
    from transformers.testing_utils import pytest_addoption_shared

    pytest_addoption_shared(parser)


def pytest_terminal_summary(terminalreporter):
    from transformers.testing_utils import pytest_terminal_summary_main

    make_reports = terminalreporter.config.getoption("--make-reports")
    if make_reports:
        pytest_terminal_summary_main(terminalreporter, id=make_reports)


def pytest_sessionfinish(session, exitstatus):
    # If no tests are collected, pytest exists with code 5, which makes the CI fail.
    if exitstatus == 5:
        session.exitstatus = 0


# Doctest custom flag to ignore output.
IGNORE_RESULT = doctest.register_optionflag("IGNORE_RESULT")

OutputChecker = doctest.OutputChecker


class CustomOutputChecker(OutputChecker):
    def check_output(self, want, got, optionflags):
        if IGNORE_RESULT & optionflags:
            return True
        return OutputChecker.check_output(self, want, got, optionflags)


doctest.OutputChecker = CustomOutputChecker
_pytest.doctest.DoctestModule = HfDoctestModule
doctest.DocTestParser = HfDocTestParser

if is_torch_available():
    import torch

    # The flag below controls whether to allow TF32 on cuDNN. This flag defaults to True.
    # We set it to `False` for CI. See https://github.com/pytorch/pytorch/issues/157274#issuecomment-3090791615
    torch.backends.cudnn.allow_tf32 = False

    # patch `torch.compile`: if `TORCH_COMPILE_FORCE_FULLGRAPH=1` (or values considered as true, e.g. yes, y, etc.),
    # the patched version will always run with `fullgraph=True`.
    patch_torch_compile_force_graph()


if os.environ.get("PATCH_TESTING_METHODS_TO_COLLECT_OUTPUTS", "").lower() in ("yes", "true", "on", "y", "1"):
    patch_testing_methods_to_collect_info()