# What does this PR do?

Adds the VITS model for text-to-speech, in particular to support the MMS-TTS checkpoints (which use the same model architecture but a different tokenizer).

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<!-- Remove if not applicable -->

Fixes # (issue)


## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
- [x] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests),
      Pull Request section?
- [x] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link
      to it if that's the case.
- [x] Did you make sure to update the documentation with your changes? Here are the
      [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and
      [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation).
- [x] Did you write any new necessary tests?


## Who can review?

Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
members/contributors who may be interested in your PR.

<!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @

 If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**.
 Please tag fewer than 3 people.

Models:

- text models: @ArthurZucker and @younesbelkada
- vision models: @amyeroberts
- speech models: @sanchit-gandhi
- graph models: @clefourrier

Library:

- flax: @sanchit-gandhi
- generate: @gante
- pipelines: @Narsil
- tensorflow: @gante and @Rocketknight1
- tokenizers: @ArthurZucker
- trainer: @sgugger

Integrations:

- deepspeed: HF Trainer/Accelerate: @pacman100
- ray/raytune: @richardliaw, @amogkam

Documentation: @sgugger, @stevhliu and @MKhalusova

HF projects:

- accelerate: [different repo](https://github.com/huggingface/accelerate)
- datasets: [different repo](https://github.com/huggingface/datasets)
- diffusers: [different repo](https://github.com/huggingface/diffusers)
- rust tokenizers: [different repo](https://github.com/huggingface/tokenizers)

Maintained examples (not research project or legacy):

- Flax: @sanchit-gandhi
- PyTorch: @sgugger
- TensorFlow: @Rocketknight1

 -->

add VITS model. # What does this PR do?

Adds the VITS model for text-to-speech, in particular to support the MMS-TTS checkpoints (which use the same model architecture but a different tokenizer).

<!--
Congratulations! You've made it this far! You're not quite done yet though.

Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution.

Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change.

Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost.
-->

<!-- Remove if not applicable -->

Fixes # (issue)


## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
- [x] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests),
      Pull Request section?
- [x] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link
      to it if that's the case.
- [x] Did you make sure to update the documentation with your changes? Here are the
      [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and
      [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation).
- [x] Did you write any new necessary tests?


## Who can review?

Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
members/contributors who may be interested in your PR.

<!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @

 If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**.
 Please tag fewer than 3 people.

Models:

- text models: @ArthurZucker and @younesbelkada
- vision models: @amyeroberts
- speech models: @sanchit-gandhi
- graph models: @clefourrier

Library:

- flax: @sanchit-gandhi
- generate: @gante
- pipelines: @Narsil
- tensorflow: @gante and @Rocketknight1
- tokenizers: @ArthurZucker
- trainer: @sgugger

Integrations:

- deepspeed: HF Trainer/Accelerate: @pacman100
- ray/raytune: @richardliaw, @amogkam

Documentation: @sgugger, @stevhliu and @MKhalusova

HF projects:

- accelerate: [different repo](https://github.com/huggingface/accelerate)
- datasets: [different repo](https://github.com/huggingface/datasets)
- diffusers: [different repo](https://github.com/huggingface/diffusers)
- rust tokenizers: [different repo](https://github.com/huggingface/tokenizers)

Maintained examples (not research project or legacy):

- Flax: @sanchit-gandhi
- PyTorch: @sgugger
- TensorFlow: @Rocketknight1

 -->

# coding=utf-8
# Copyright 2023 The HuggingFace Inc. 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.

import copy
import json
import os
import random
import unittest
from pathlib import Path

from transformers.testing_utils import (
    is_pipeline_test,
    require_decord,
    require_pytesseract,
    require_timm,
    require_torch,
    require_torch_or_tf,
    require_vision,
)
from transformers.utils import direct_transformers_import, logging

from .pipelines.test_pipelines_audio_classification import AudioClassificationPipelineTests
from .pipelines.test_pipelines_automatic_speech_recognition import AutomaticSpeechRecognitionPipelineTests
from .pipelines.test_pipelines_conversational import ConversationalPipelineTests
from .pipelines.test_pipelines_depth_estimation import DepthEstimationPipelineTests
from .pipelines.test_pipelines_document_question_answering import DocumentQuestionAnsweringPipelineTests
from .pipelines.test_pipelines_feature_extraction import FeatureExtractionPipelineTests
from .pipelines.test_pipelines_fill_mask import FillMaskPipelineTests
from .pipelines.test_pipelines_image_classification import ImageClassificationPipelineTests
from .pipelines.test_pipelines_image_segmentation import ImageSegmentationPipelineTests
from .pipelines.test_pipelines_image_to_text import ImageToTextPipelineTests
from .pipelines.test_pipelines_mask_generation import MaskGenerationPipelineTests
from .pipelines.test_pipelines_object_detection import ObjectDetectionPipelineTests
from .pipelines.test_pipelines_question_answering import QAPipelineTests
from .pipelines.test_pipelines_summarization import SummarizationPipelineTests
from .pipelines.test_pipelines_table_question_answering import TQAPipelineTests
from .pipelines.test_pipelines_text2text_generation import Text2TextGenerationPipelineTests
from .pipelines.test_pipelines_text_classification import TextClassificationPipelineTests
from .pipelines.test_pipelines_text_generation import TextGenerationPipelineTests
from .pipelines.test_pipelines_text_to_audio import TextToAudioPipelineTests
from .pipelines.test_pipelines_token_classification import TokenClassificationPipelineTests
from .pipelines.test_pipelines_translation import TranslationPipelineTests
from .pipelines.test_pipelines_video_classification import VideoClassificationPipelineTests
from .pipelines.test_pipelines_visual_question_answering import VisualQuestionAnsweringPipelineTests
from .pipelines.test_pipelines_zero_shot import ZeroShotClassificationPipelineTests
from .pipelines.test_pipelines_zero_shot_audio_classification import ZeroShotAudioClassificationPipelineTests
from .pipelines.test_pipelines_zero_shot_image_classification import ZeroShotImageClassificationPipelineTests
from .pipelines.test_pipelines_zero_shot_object_detection import ZeroShotObjectDetectionPipelineTests


pipeline_test_mapping = {
    "audio-classification": {"test": AudioClassificationPipelineTests},
    "automatic-speech-recognition": {"test": AutomaticSpeechRecognitionPipelineTests},
    "conversational": {"test": ConversationalPipelineTests},
    "depth-estimation": {"test": DepthEstimationPipelineTests},
    "document-question-answering": {"test": DocumentQuestionAnsweringPipelineTests},
    "feature-extraction": {"test": FeatureExtractionPipelineTests},
    "fill-mask": {"test": FillMaskPipelineTests},
    "image-classification": {"test": ImageClassificationPipelineTests},
    "image-segmentation": {"test": ImageSegmentationPipelineTests},
    "image-to-text": {"test": ImageToTextPipelineTests},
    "mask-generation": {"test": MaskGenerationPipelineTests},
    "object-detection": {"test": ObjectDetectionPipelineTests},
    "question-answering": {"test": QAPipelineTests},
    "summarization": {"test": SummarizationPipelineTests},
    "table-question-answering": {"test": TQAPipelineTests},
    "text2text-generation": {"test": Text2TextGenerationPipelineTests},
    "text-classification": {"test": TextClassificationPipelineTests},
    "text-generation": {"test": TextGenerationPipelineTests},
    "text-to-audio": {"test": TextToAudioPipelineTests},
    "token-classification": {"test": TokenClassificationPipelineTests},
    "translation": {"test": TranslationPipelineTests},
    "video-classification": {"test": VideoClassificationPipelineTests},
    "visual-question-answering": {"test": VisualQuestionAnsweringPipelineTests},
    "zero-shot": {"test": ZeroShotClassificationPipelineTests},
    "zero-shot-audio-classification": {"test": ZeroShotAudioClassificationPipelineTests},
    "zero-shot-image-classification": {"test": ZeroShotImageClassificationPipelineTests},
    "zero-shot-object-detection": {"test": ZeroShotObjectDetectionPipelineTests},
}

for task, task_info in pipeline_test_mapping.items():
    test = task_info["test"]
    task_info["mapping"] = {
        "pt": getattr(test, "model_mapping", None),
        "tf": getattr(test, "tf_model_mapping", None),
    }


# The default value `hf-internal-testing` is for running the pipeline testing against the tiny models on the Hub.
# For debugging purpose, we can specify a local path which is the `output_path` argument of a previous run of
# `utils/create_dummy_models.py`.
TRANSFORMERS_TINY_MODEL_PATH = os.environ.get("TRANSFORMERS_TINY_MODEL_PATH", "hf-internal-testing")
if TRANSFORMERS_TINY_MODEL_PATH == "hf-internal-testing":
    TINY_MODEL_SUMMARY_FILE_PATH = os.path.join(Path(__file__).parent.parent, "tests/utils/tiny_model_summary.json")
else:
    TINY_MODEL_SUMMARY_FILE_PATH = os.path.join(TRANSFORMERS_TINY_MODEL_PATH, "reports", "tiny_model_summary.json")
with open(TINY_MODEL_SUMMARY_FILE_PATH) as fp:
    tiny_model_summary = json.load(fp)


PATH_TO_TRANSFORMERS = os.path.join(Path(__file__).parent.parent, "src/transformers")


# Dynamically import the Transformers module to grab the attribute classes of the processor form their names.
transformers_module = direct_transformers_import(PATH_TO_TRANSFORMERS)

logger = logging.get_logger(__name__)


class PipelineTesterMixin:
    model_tester = None
    pipeline_model_mapping = None
    supported_frameworks = ["pt", "tf"]

    def run_task_tests(self, task):
        """Run pipeline tests for a specific `task`

        Args:
            task (`str`):
                A task name. This should be a key in the mapping `pipeline_test_mapping`.
        """
        if task not in self.pipeline_model_mapping:
            self.skipTest(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: `{task}` is not in "
                f"`self.pipeline_model_mapping` for `{self.__class__.__name__}`."
            )

        model_architectures = self.pipeline_model_mapping[task]
        if not isinstance(model_architectures, tuple):
            model_architectures = (model_architectures,)
        if not isinstance(model_architectures, tuple):
            raise ValueError(f"`model_architectures` must be a tuple. Got {type(model_architectures)} instead.")

        for model_architecture in model_architectures:
            model_arch_name = model_architecture.__name__

            # Get the canonical name
            for _prefix in ["Flax", "TF"]:
                if model_arch_name.startswith(_prefix):
                    model_arch_name = model_arch_name[len(_prefix) :]
                    break

            tokenizer_names = []
            processor_names = []
            commit = None
            if model_arch_name in tiny_model_summary:
                tokenizer_names = tiny_model_summary[model_arch_name]["tokenizer_classes"]
                processor_names = tiny_model_summary[model_arch_name]["processor_classes"]
                if "sha" in tiny_model_summary[model_arch_name]:
                    commit = tiny_model_summary[model_arch_name]["sha"]
            # Adding `None` (if empty) so we can generate tests
            tokenizer_names = [None] if len(tokenizer_names) == 0 else tokenizer_names
            processor_names = [None] if len(processor_names) == 0 else processor_names

            repo_name = f"tiny-random-{model_arch_name}"
            if TRANSFORMERS_TINY_MODEL_PATH != "hf-internal-testing":
                repo_name = model_arch_name

            self.run_model_pipeline_tests(
                task, repo_name, model_architecture, tokenizer_names, processor_names, commit
            )

    def run_model_pipeline_tests(self, task, repo_name, model_architecture, tokenizer_names, processor_names, commit):
        """Run pipeline tests for a specific `task` with the give model class and tokenizer/processor class names

        Args:
            task (`str`):
                A task name. This should be a key in the mapping `pipeline_test_mapping`.
            repo_name (`str`):
                A model repository id on the Hub.
            model_architecture (`type`):
                A subclass of `PretrainedModel` or `PretrainedModel`.
            tokenizer_names (`List[str]`):
                A list of names of a subclasses of `PreTrainedTokenizerFast` or `PreTrainedTokenizer`.
            processor_names (`List[str]`):
                A list of names of subclasses of `BaseImageProcessor` or `FeatureExtractionMixin`.
        """
        # Get an instance of the corresponding class `XXXPipelineTests` in order to use `get_test_pipeline` and
        # `run_pipeline_test`.
        pipeline_test_class_name = pipeline_test_mapping[task]["test"].__name__

        for tokenizer_name in tokenizer_names:
            for processor_name in processor_names:
                if self.is_pipeline_test_to_skip(
                    pipeline_test_class_name,
                    model_architecture.config_class,
                    model_architecture,
                    tokenizer_name,
                    processor_name,
                ):
                    logger.warning(
                        f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: test is "
                        f"currently known to fail for: model `{model_architecture.__name__}` | tokenizer "
                        f"`{tokenizer_name}` | processor `{processor_name}`."
                    )
                    continue
                self.run_pipeline_test(task, repo_name, model_architecture, tokenizer_name, processor_name, commit)

    def run_pipeline_test(self, task, repo_name, model_architecture, tokenizer_name, processor_name, commit):
        """Run pipeline tests for a specific `task` with the give model class and tokenizer/processor class name

        The model will be loaded from a model repository on the Hub.

        Args:
            task (`str`):
                A task name. This should be a key in the mapping `pipeline_test_mapping`.
            repo_name (`str`):
                A model repository id on the Hub.
            model_architecture (`type`):
                A subclass of `PretrainedModel` or `PretrainedModel`.
            tokenizer_name (`str`):
                The name of a subclass of `PreTrainedTokenizerFast` or `PreTrainedTokenizer`.
            processor_name (`str`):
                The name of a subclass of `BaseImageProcessor` or `FeatureExtractionMixin`.
        """
        repo_id = f"{TRANSFORMERS_TINY_MODEL_PATH}/{repo_name}"
        if TRANSFORMERS_TINY_MODEL_PATH != "hf-internal-testing":
            model_type = model_architecture.config_class.model_type
            repo_id = os.path.join(TRANSFORMERS_TINY_MODEL_PATH, model_type, repo_name)

        tokenizer = None
        if tokenizer_name is not None:
            tokenizer_class = getattr(transformers_module, tokenizer_name)
            tokenizer = tokenizer_class.from_pretrained(repo_id, revision=commit)

        processor = None
        if processor_name is not None:
            processor_class = getattr(transformers_module, processor_name)
            # If the required packages (like `Pillow` or `torchaudio`) are not installed, this will fail.
            try:
                processor = processor_class.from_pretrained(repo_id, revision=commit)
            except Exception:
                logger.warning(
                    f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not load the "
                    f"processor from `{repo_id}` with `{processor_name}`."
                )
                return

        # TODO: Maybe not upload such problematic tiny models to Hub.
        if tokenizer is None and processor is None:
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not find or load "
                f"any tokenizer / processor from `{repo_id}`."
            )
            return

        # TODO: We should check if a model file is on the Hub repo. instead.
        try:
            model = model_architecture.from_pretrained(repo_id, revision=commit)
        except Exception:
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not find or load "
                f"the model from `{repo_id}` with `{model_architecture}`."
            )
            return

        pipeline_test_class_name = pipeline_test_mapping[task]["test"].__name__
        if self.is_pipeline_test_to_skip_more(pipeline_test_class_name, model.config, model, tokenizer, processor):
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: test is "
                f"currently known to fail for: model `{model_architecture.__name__}` | tokenizer "
                f"`{tokenizer_name}` | processor `{processor_name}`."
            )
            return

        # validate
        validate_test_components(self, task, model, tokenizer, processor)

        if hasattr(model, "eval"):
            model = model.eval()

        # Get an instance of the corresponding class `XXXPipelineTests` in order to use `get_test_pipeline` and
        # `run_pipeline_test`.
        task_test = pipeline_test_mapping[task]["test"]()

        pipeline, examples = task_test.get_test_pipeline(model, tokenizer, processor)
        if pipeline is None:
            # The test can disable itself, but it should be very marginal
            # Concerns: Wav2Vec2ForCTC without tokenizer test (FastTokenizer don't exist)
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not get the "
                "pipeline for testing."
            )
            return

        task_test.run_pipeline_test(pipeline, examples)

        def run_batch_test(pipeline, examples):
            # Need to copy because `Conversation` are stateful
            if pipeline.tokenizer is not None and pipeline.tokenizer.pad_token_id is None:
                return  # No batching for this and it's OK

            # 10 examples with batch size 4 means there needs to be a unfinished batch
            # which is important for the unbatcher
            def data(n):
                for _ in range(n):
                    # Need to copy because Conversation object is mutated
                    yield copy.deepcopy(random.choice(examples))

            out = []
            for item in pipeline(data(10), batch_size=4):
                out.append(item)
            self.assertEqual(len(out), 10)

        run_batch_test(pipeline, examples)

    @is_pipeline_test
    def test_pipeline_audio_classification(self):
        self.run_task_tests(task="audio-classification")

    @is_pipeline_test
    def test_pipeline_automatic_speech_recognition(self):
        self.run_task_tests(task="automatic-speech-recognition")

    @is_pipeline_test
    def test_pipeline_conversational(self):
        self.run_task_tests(task="conversational")

    @is_pipeline_test
    @require_vision
    @require_timm
    @require_torch
    def test_pipeline_depth_estimation(self):
        self.run_task_tests(task="depth-estimation")

    @is_pipeline_test
    @require_pytesseract
    @require_torch
    @require_vision
    def test_pipeline_document_question_answering(self):
        self.run_task_tests(task="document-question-answering")

    @is_pipeline_test
    def test_pipeline_feature_extraction(self):
        self.run_task_tests(task="feature-extraction")

    @is_pipeline_test
    def test_pipeline_fill_mask(self):
        self.run_task_tests(task="fill-mask")

    @is_pipeline_test
    @require_torch_or_tf
    @require_vision
    def test_pipeline_image_classification(self):
        self.run_task_tests(task="image-classification")

    @is_pipeline_test
    @require_vision
    @require_timm
    @require_torch
    def test_pipeline_image_segmentation(self):
        self.run_task_tests(task="image-segmentation")

    @is_pipeline_test
    @require_vision
    def test_pipeline_image_to_text(self):
        self.run_task_tests(task="image-to-text")

    @unittest.skip(reason="`run_pipeline_test` is currently not implemented.")
    @is_pipeline_test
    @require_vision
    @require_torch
    def test_pipeline_mask_generation(self):
        self.run_task_tests(task="mask-generation")

    @is_pipeline_test
    @require_vision
    @require_timm
    @require_torch
    def test_pipeline_object_detection(self):
        self.run_task_tests(task="object-detection")

    @is_pipeline_test
    def test_pipeline_question_answering(self):
        self.run_task_tests(task="question-answering")

    @is_pipeline_test
    def test_pipeline_summarization(self):
        self.run_task_tests(task="summarization")

    @is_pipeline_test
    def test_pipeline_table_question_answering(self):
        self.run_task_tests(task="table-question-answering")

    @is_pipeline_test
    def test_pipeline_text2text_generation(self):
        self.run_task_tests(task="text2text-generation")

    @is_pipeline_test
    def test_pipeline_text_classification(self):
        self.run_task_tests(task="text-classification")

    @is_pipeline_test
    @require_torch_or_tf
    def test_pipeline_text_generation(self):
        self.run_task_tests(task="text-generation")

    @is_pipeline_test
    @require_torch
    def test_pipeline_text_to_audio(self):
        self.run_task_tests(task="text-to-audio")

    @is_pipeline_test
    def test_pipeline_token_classification(self):
        self.run_task_tests(task="token-classification")

    @is_pipeline_test
    def test_pipeline_translation(self):
        self.run_task_tests(task="translation")

    @is_pipeline_test
    @require_torch_or_tf
    @require_vision
    @require_decord
    def test_pipeline_video_classification(self):
        self.run_task_tests(task="video-classification")

    @is_pipeline_test
    @require_torch
    @require_vision
    def test_pipeline_visual_question_answering(self):
        self.run_task_tests(task="visual-question-answering")

    @is_pipeline_test
    def test_pipeline_zero_shot(self):
        self.run_task_tests(task="zero-shot")

    @is_pipeline_test
    @require_torch
    def test_pipeline_zero_shot_audio_classification(self):
        self.run_task_tests(task="zero-shot-audio-classification")

    @is_pipeline_test
    @require_vision
    def test_pipeline_zero_shot_image_classification(self):
        self.run_task_tests(task="zero-shot-image-classification")

    @is_pipeline_test
    @require_vision
    @require_torch
    def test_pipeline_zero_shot_object_detection(self):
        self.run_task_tests(task="zero-shot-object-detection")

    # This contains the test cases to be skipped without model architecture being involved.
    def is_pipeline_test_to_skip(
        self, pipeline_test_casse_name, config_class, model_architecture, tokenizer_name, processor_name
    ):
        """Skip some tests based on the classes or their names without the instantiated objects.

        This is to avoid calling `from_pretrained` (so reducing the runtime) if we already know the tests will fail.
        """
        # No fix is required for this case.
        if (
            pipeline_test_casse_name == "DocumentQuestionAnsweringPipelineTests"
            and tokenizer_name is not None
            and not tokenizer_name.endswith("Fast")
        ):
            # `DocumentQuestionAnsweringPipelineTests` requires a fast tokenizer.
            return True

        return False

    def is_pipeline_test_to_skip_more(self, pipeline_test_casse_name, config, model, tokenizer, processor):  # noqa
        """Skip some more tests based on the information from the instantiated objects."""
        # No fix is required for this case.
        if (
            pipeline_test_casse_name == "QAPipelineTests"
            and tokenizer is not None
            and getattr(tokenizer, "pad_token", None) is None
            and not tokenizer.__class__.__name__.endswith("Fast")
        ):
            # `QAPipelineTests` doesn't work with a slow tokenizer that has no pad token.
            return True

        return False


def validate_test_components(test_case, task, model, tokenizer, processor):
    # TODO: Move this to tiny model creation script
    # head-specific (within a model type) necessary changes to the config
    # 1. for `BlenderbotForCausalLM`
    if model.__class__.__name__ == "BlenderbotForCausalLM":
        model.config.encoder_no_repeat_ngram_size = 0

    # TODO: Change the tiny model creation script: don't create models with problematic tokenizers
    # Avoid `IndexError` in embedding layers
    CONFIG_WITHOUT_VOCAB_SIZE = ["CanineConfig"]
    if tokenizer is not None:
        config_vocab_size = getattr(model.config, "vocab_size", None)
        # For CLIP-like models
        if config_vocab_size is None and hasattr(model.config, "text_config"):
            config_vocab_size = getattr(model.config.text_config, "vocab_size", None)
        if config_vocab_size is None and model.config.__class__.__name__ not in CONFIG_WITHOUT_VOCAB_SIZE:
            raise ValueError(
                "Could not determine `vocab_size` from model configuration while `tokenizer` is not `None`."
            )

# coding=utf-8
# Copyright 2023 The HuggingFace Inc. 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.

import copy
import json
import os
import random
import unittest
from pathlib import Path

from transformers.testing_utils import (
    is_pipeline_test,
    require_decord,
    require_pytesseract,
    require_timm,
    require_torch,
    require_torch_or_tf,
    require_vision,
)
from transformers.utils import direct_transformers_import, logging

from .pipelines.test_pipelines_audio_classification import AudioClassificationPipelineTests
from .pipelines.test_pipelines_automatic_speech_recognition import AutomaticSpeechRecognitionPipelineTests
from .pipelines.test_pipelines_conversational import ConversationalPipelineTests
from .pipelines.test_pipelines_depth_estimation import DepthEstimationPipelineTests
from .pipelines.test_pipelines_document_question_answering import DocumentQuestionAnsweringPipelineTests
from .pipelines.test_pipelines_feature_extraction import FeatureExtractionPipelineTests
from .pipelines.test_pipelines_fill_mask import FillMaskPipelineTests
from .pipelines.test_pipelines_image_classification import ImageClassificationPipelineTests
from .pipelines.test_pipelines_image_segmentation import ImageSegmentationPipelineTests
from .pipelines.test_pipelines_image_to_text import ImageToTextPipelineTests
from .pipelines.test_pipelines_mask_generation import MaskGenerationPipelineTests
from .pipelines.test_pipelines_object_detection import ObjectDetectionPipelineTests
from .pipelines.test_pipelines_question_answering import QAPipelineTests
from .pipelines.test_pipelines_summarization import SummarizationPipelineTests
from .pipelines.test_pipelines_table_question_answering import TQAPipelineTests
from .pipelines.test_pipelines_text2text_generation import Text2TextGenerationPipelineTests
from .pipelines.test_pipelines_text_classification import TextClassificationPipelineTests
from .pipelines.test_pipelines_text_generation import TextGenerationPipelineTests
from .pipelines.test_pipelines_text_to_audio import TextToAudioPipelineTests
from .pipelines.test_pipelines_token_classification import TokenClassificationPipelineTests
from .pipelines.test_pipelines_translation import TranslationPipelineTests
from .pipelines.test_pipelines_video_classification import VideoClassificationPipelineTests
from .pipelines.test_pipelines_visual_question_answering import VisualQuestionAnsweringPipelineTests
from .pipelines.test_pipelines_zero_shot import ZeroShotClassificationPipelineTests
from .pipelines.test_pipelines_zero_shot_audio_classification import ZeroShotAudioClassificationPipelineTests
from .pipelines.test_pipelines_zero_shot_image_classification import ZeroShotImageClassificationPipelineTests
from .pipelines.test_pipelines_zero_shot_object_detection import ZeroShotObjectDetectionPipelineTests


pipeline_test_mapping = {
    "audio-classification": {"test": AudioClassificationPipelineTests},
    "automatic-speech-recognition": {"test": AutomaticSpeechRecognitionPipelineTests},
    "conversational": {"test": ConversationalPipelineTests},
    "depth-estimation": {"test": DepthEstimationPipelineTests},
    "document-question-answering": {"test": DocumentQuestionAnsweringPipelineTests},
    "feature-extraction": {"test": FeatureExtractionPipelineTests},
    "fill-mask": {"test": FillMaskPipelineTests},
    "image-classification": {"test": ImageClassificationPipelineTests},
    "image-segmentation": {"test": ImageSegmentationPipelineTests},
    "image-to-text": {"test": ImageToTextPipelineTests},
    "mask-generation": {"test": MaskGenerationPipelineTests},
    "object-detection": {"test": ObjectDetectionPipelineTests},
    "question-answering": {"test": QAPipelineTests},
    "summarization": {"test": SummarizationPipelineTests},
    "table-question-answering": {"test": TQAPipelineTests},
    "text2text-generation": {"test": Text2TextGenerationPipelineTests},
    "text-classification": {"test": TextClassificationPipelineTests},
    "text-generation": {"test": TextGenerationPipelineTests},
    "text-to-audio": {"test": TextToAudioPipelineTests},
    "token-classification": {"test": TokenClassificationPipelineTests},
    "translation": {"test": TranslationPipelineTests},
    "video-classification": {"test": VideoClassificationPipelineTests},
    "visual-question-answering": {"test": VisualQuestionAnsweringPipelineTests},
    "zero-shot": {"test": ZeroShotClassificationPipelineTests},
    "zero-shot-audio-classification": {"test": ZeroShotAudioClassificationPipelineTests},
    "zero-shot-image-classification": {"test": ZeroShotImageClassificationPipelineTests},
    "zero-shot-object-detection": {"test": ZeroShotObjectDetectionPipelineTests},
}

for task, task_info in pipeline_test_mapping.items():
    test = task_info["test"]
    task_info["mapping"] = {
        "pt": getattr(test, "model_mapping", None),
        "tf": getattr(test, "tf_model_mapping", None),
    }


# The default value `hf-internal-testing` is for running the pipeline testing against the tiny models on the Hub.
# For debugging purpose, we can specify a local path which is the `output_path` argument of a previous run of
# `utils/create_dummy_models.py`.
TRANSFORMERS_TINY_MODEL_PATH = os.environ.get("TRANSFORMERS_TINY_MODEL_PATH", "hf-internal-testing")
if TRANSFORMERS_TINY_MODEL_PATH == "hf-internal-testing":
    TINY_MODEL_SUMMARY_FILE_PATH = os.path.join(Path(__file__).parent.parent, "tests/utils/tiny_model_summary.json")
else:
    TINY_MODEL_SUMMARY_FILE_PATH = os.path.join(TRANSFORMERS_TINY_MODEL_PATH, "reports", "tiny_model_summary.json")
with open(TINY_MODEL_SUMMARY_FILE_PATH) as fp:
    tiny_model_summary = json.load(fp)


PATH_TO_TRANSFORMERS = os.path.join(Path(__file__).parent.parent, "src/transformers")


# Dynamically import the Transformers module to grab the attribute classes of the processor form their names.
transformers_module = direct_transformers_import(PATH_TO_TRANSFORMERS)

logger = logging.get_logger(__name__)


class PipelineTesterMixin:
    model_tester = None
    pipeline_model_mapping = None
    supported_frameworks = ["pt", "tf"]

    def run_task_tests(self, task):
        """Run pipeline tests for a specific `task`

        Args:
            task (`str`):
                A task name. This should be a key in the mapping `pipeline_test_mapping`.
        """
        if task not in self.pipeline_model_mapping:
            self.skipTest(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: `{task}` is not in "
                f"`self.pipeline_model_mapping` for `{self.__class__.__name__}`."
            )

        model_architectures = self.pipeline_model_mapping[task]
        if not isinstance(model_architectures, tuple):
            model_architectures = (model_architectures,)
        if not isinstance(model_architectures, tuple):
            raise ValueError(f"`model_architectures` must be a tuple. Got {type(model_architectures)} instead.")

        for model_architecture in model_architectures:
            model_arch_name = model_architecture.__name__

            # Get the canonical name
            for _prefix in ["Flax", "TF"]:
                if model_arch_name.startswith(_prefix):
                    model_arch_name = model_arch_name[len(_prefix) :]
                    break

            tokenizer_names = []
            processor_names = []
            commit = None
            if model_arch_name in tiny_model_summary:
                tokenizer_names = tiny_model_summary[model_arch_name]["tokenizer_classes"]
                processor_names = tiny_model_summary[model_arch_name]["processor_classes"]
                if "sha" in tiny_model_summary[model_arch_name]:
                    commit = tiny_model_summary[model_arch_name]["sha"]
            # Adding `None` (if empty) so we can generate tests
            tokenizer_names = [None] if len(tokenizer_names) == 0 else tokenizer_names
            processor_names = [None] if len(processor_names) == 0 else processor_names

            repo_name = f"tiny-random-{model_arch_name}"
            if TRANSFORMERS_TINY_MODEL_PATH != "hf-internal-testing":
                repo_name = model_arch_name

            self.run_model_pipeline_tests(
                task, repo_name, model_architecture, tokenizer_names, processor_names, commit
            )

    def run_model_pipeline_tests(self, task, repo_name, model_architecture, tokenizer_names, processor_names, commit):
        """Run pipeline tests for a specific `task` with the give model class and tokenizer/processor class names

        Args:
            task (`str`):
                A task name. This should be a key in the mapping `pipeline_test_mapping`.
            repo_name (`str`):
                A model repository id on the Hub.
            model_architecture (`type`):
                A subclass of `PretrainedModel` or `PretrainedModel`.
            tokenizer_names (`List[str]`):
                A list of names of a subclasses of `PreTrainedTokenizerFast` or `PreTrainedTokenizer`.
            processor_names (`List[str]`):
                A list of names of subclasses of `BaseImageProcessor` or `FeatureExtractionMixin`.
        """
        # Get an instance of the corresponding class `XXXPipelineTests` in order to use `get_test_pipeline` and
        # `run_pipeline_test`.
        pipeline_test_class_name = pipeline_test_mapping[task]["test"].__name__

        for tokenizer_name in tokenizer_names:
            for processor_name in processor_names:
                if self.is_pipeline_test_to_skip(
                    pipeline_test_class_name,
                    model_architecture.config_class,
                    model_architecture,
                    tokenizer_name,
                    processor_name,
                ):
                    logger.warning(
                        f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: test is "
                        f"currently known to fail for: model `{model_architecture.__name__}` | tokenizer "
                        f"`{tokenizer_name}` | processor `{processor_name}`."
                    )
                    continue
                self.run_pipeline_test(task, repo_name, model_architecture, tokenizer_name, processor_name, commit)

    def run_pipeline_test(self, task, repo_name, model_architecture, tokenizer_name, processor_name, commit):
        """Run pipeline tests for a specific `task` with the give model class and tokenizer/processor class name

        The model will be loaded from a model repository on the Hub.

        Args:
            task (`str`):
                A task name. This should be a key in the mapping `pipeline_test_mapping`.
            repo_name (`str`):
                A model repository id on the Hub.
            model_architecture (`type`):
                A subclass of `PretrainedModel` or `PretrainedModel`.
            tokenizer_name (`str`):
                The name of a subclass of `PreTrainedTokenizerFast` or `PreTrainedTokenizer`.
            processor_name (`str`):
                The name of a subclass of `BaseImageProcessor` or `FeatureExtractionMixin`.
        """
        repo_id = f"{TRANSFORMERS_TINY_MODEL_PATH}/{repo_name}"
        if TRANSFORMERS_TINY_MODEL_PATH != "hf-internal-testing":
            model_type = model_architecture.config_class.model_type
            repo_id = os.path.join(TRANSFORMERS_TINY_MODEL_PATH, model_type, repo_name)

        tokenizer = None
        if tokenizer_name is not None:
            tokenizer_class = getattr(transformers_module, tokenizer_name)
            tokenizer = tokenizer_class.from_pretrained(repo_id, revision=commit)

        processor = None
        if processor_name is not None:
            processor_class = getattr(transformers_module, processor_name)
            # If the required packages (like `Pillow` or `torchaudio`) are not installed, this will fail.
            try:
                processor = processor_class.from_pretrained(repo_id, revision=commit)
            except Exception:
                logger.warning(
                    f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not load the "
                    f"processor from `{repo_id}` with `{processor_name}`."
                )
                return

        # TODO: Maybe not upload such problematic tiny models to Hub.
        if tokenizer is None and processor is None:
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not find or load "
                f"any tokenizer / processor from `{repo_id}`."
            )
            return

        # TODO: We should check if a model file is on the Hub repo. instead.
        try:
            model = model_architecture.from_pretrained(repo_id, revision=commit)
        except Exception:
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not find or load "
                f"the model from `{repo_id}` with `{model_architecture}`."
            )
            return

        pipeline_test_class_name = pipeline_test_mapping[task]["test"].__name__
        if self.is_pipeline_test_to_skip_more(pipeline_test_class_name, model.config, model, tokenizer, processor):
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: test is "
                f"currently known to fail for: model `{model_architecture.__name__}` | tokenizer "
                f"`{tokenizer_name}` | processor `{processor_name}`."
            )
            return

        # validate
        validate_test_components(self, task, model, tokenizer, processor)

        if hasattr(model, "eval"):
            model = model.eval()

        # Get an instance of the corresponding class `XXXPipelineTests` in order to use `get_test_pipeline` and
        # `run_pipeline_test`.
        task_test = pipeline_test_mapping[task]["test"]()

        pipeline, examples = task_test.get_test_pipeline(model, tokenizer, processor)
        if pipeline is None:
            # The test can disable itself, but it should be very marginal
            # Concerns: Wav2Vec2ForCTC without tokenizer test (FastTokenizer don't exist)
            logger.warning(
                f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')} is skipped: Could not get the "
                "pipeline for testing."
            )
            return

        task_test.run_pipeline_test(pipeline, examples)

        def run_batch_test(pipeline, examples):
            # Need to copy because `Conversation` are stateful
            if pipeline.tokenizer is not None and pipeline.tokenizer.pad_token_id is None:
                return  # No batching for this and it's OK

            # 10 examples with batch size 4 means there needs to be a unfinished batch
            # which is important for the unbatcher
            def data(n):
                for _ in range(n):
                    # Need to copy because Conversation object is mutated
                    yield copy.deepcopy(random.choice(examples))

            out = []
            for item in pipeline(data(10), batch_size=4):
                out.append(item)
            self.assertEqual(len(out), 10)

        run_batch_test(pipeline, examples)

    @is_pipeline_test
    def test_pipeline_audio_classification(self):
        self.run_task_tests(task="audio-classification")

    @is_pipeline_test
    def test_pipeline_automatic_speech_recognition(self):
        self.run_task_tests(task="automatic-speech-recognition")

    @is_pipeline_test
    def test_pipeline_conversational(self):
        self.run_task_tests(task="conversational")

    @is_pipeline_test
    @require_vision
    @require_timm
    @require_torch
    def test_pipeline_depth_estimation(self):
        self.run_task_tests(task="depth-estimation")

    @is_pipeline_test
    @require_pytesseract
    @require_torch
    @require_vision
    def test_pipeline_document_question_answering(self):
        self.run_task_tests(task="document-question-answering")

    @is_pipeline_test
    def test_pipeline_feature_extraction(self):
        self.run_task_tests(task="feature-extraction")

    @is_pipeline_test
    def test_pipeline_fill_mask(self):
        self.run_task_tests(task="fill-mask")

    @is_pipeline_test
    @require_torch_or_tf
    @require_vision
    def test_pipeline_image_classification(self):
        self.run_task_tests(task="image-classification")

    @is_pipeline_test
    @require_vision
    @require_timm
    @require_torch
    def test_pipeline_image_segmentation(self):
        self.run_task_tests(task="image-segmentation")

    @is_pipeline_test
    @require_vision
    def test_pipeline_image_to_text(self):
        self.run_task_tests(task="image-to-text")

    @unittest.skip(reason="`run_pipeline_test` is currently not implemented.")
    @is_pipeline_test
    @require_vision
    @require_torch
    def test_pipeline_mask_generation(self):
        self.run_task_tests(task="mask-generation")

    @is_pipeline_test
    @require_vision
    @require_timm
    @require_torch
    def test_pipeline_object_detection(self):
        self.run_task_tests(task="object-detection")

    @is_pipeline_test
    def test_pipeline_question_answering(self):
        self.run_task_tests(task="question-answering")

    @is_pipeline_test
    def test_pipeline_summarization(self):
        self.run_task_tests(task="summarization")

    @is_pipeline_test
    def test_pipeline_table_question_answering(self):
        self.run_task_tests(task="table-question-answering")

    @is_pipeline_test
    def test_pipeline_text2text_generation(self):
        self.run_task_tests(task="text2text-generation")

    @is_pipeline_test
    def test_pipeline_text_classification(self):
        self.run_task_tests(task="text-classification")

    @is_pipeline_test
    @require_torch_or_tf
    def test_pipeline_text_generation(self):
        self.run_task_tests(task="text-generation")

    @is_pipeline_test
    @require_torch
    def test_pipeline_text_to_audio(self):
        self.run_task_tests(task="text-to-audio")

    @is_pipeline_test
    def test_pipeline_token_classification(self):
        self.run_task_tests(task="token-classification")

    @is_pipeline_test
    def test_pipeline_translation(self):
        self.run_task_tests(task="translation")

    @is_pipeline_test
    @require_torch_or_tf
    @require_vision
    @require_decord
    def test_pipeline_video_classification(self):
        self.run_task_tests(task="video-classification")

    @is_pipeline_test
    @require_torch
    @require_vision
    def test_pipeline_visual_question_answering(self):
        self.run_task_tests(task="visual-question-answering")

    @is_pipeline_test
    def test_pipeline_zero_shot(self):
        self.run_task_tests(task="zero-shot")

    @is_pipeline_test
    @require_torch
    def test_pipeline_zero_shot_audio_classification(self):
        self.run_task_tests(task="zero-shot-audio-classification")

    @is_pipeline_test
    @require_vision
    def test_pipeline_zero_shot_image_classification(self):
        self.run_task_tests(task="zero-shot-image-classification")

    @is_pipeline_test
    @require_vision
    @require_torch
    def test_pipeline_zero_shot_object_detection(self):
        self.run_task_tests(task="zero-shot-object-detection")

    # This contains the test cases to be skipped without model architecture being involved.
    def is_pipeline_test_to_skip(
        self, pipeline_test_casse_name, config_class, model_architecture, tokenizer_name, processor_name
    ):
        """Skip some tests based on the classes or their names without the instantiated objects.

        This is to avoid calling `from_pretrained` (so reducing the runtime) if we already know the tests will fail.
        """
        # No fix is required for this case.
        if (
            pipeline_test_casse_name == "DocumentQuestionAnsweringPipelineTests"
            and tokenizer_name is not None
            and not tokenizer_name.endswith("Fast")
        ):
            # `DocumentQuestionAnsweringPipelineTests` requires a fast tokenizer.
            return True

        return False

    def is_pipeline_test_to_skip_more(self, pipeline_test_casse_name, config, model, tokenizer, processor):  # noqa
        """Skip some more tests based on the information from the instantiated objects."""
        # No fix is required for this case.
        if (
            pipeline_test_casse_name == "QAPipelineTests"
            and tokenizer is not None
            and getattr(tokenizer, "pad_token", None) is None
            and not tokenizer.__class__.__name__.endswith("Fast")
        ):
            # `QAPipelineTests` doesn't work with a slow tokenizer that has no pad token.
            return True

        return False


def validate_test_components(test_case, task, model, tokenizer, processor):
    # TODO: Move this to tiny model creation script
    # head-specific (within a model type) necessary changes to the config
    # 1. for `BlenderbotForCausalLM`
    if model.__class__.__name__ == "BlenderbotForCausalLM":
        model.config.encoder_no_repeat_ngram_size = 0

    # TODO: Change the tiny model creation script: don't create models with problematic tokenizers
    # Avoid `IndexError` in embedding layers
    CONFIG_WITHOUT_VOCAB_SIZE = ["CanineConfig"]
    if tokenizer is not None:
        config_vocab_size = getattr(model.config, "vocab_size", None)
        # For CLIP-like models
        if config_vocab_size is None and hasattr(model.config, "text_config"):
            config_vocab_size = getattr(model.config.text_config, "vocab_size", None)
        if config_vocab_size is None and model.config.__class__.__name__ not in CONFIG_WITHOUT_VOCAB_SIZE:
            raise ValueError(
                "Could not determine `vocab_size` from model configuration while `tokenizer` is not `None`."
            )
