# Copyright 2024 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 subprocess
import sys
import unittest


class CLITester(unittest.TestCase):
    @unittest.skipIf(sys.platform.startswith("win"), "Skipping on Windows")
    def test_sft_cli(self):
        try:
            subprocess.run(
                "trl sft --max_steps 1 --output_dir tmp-sft --model_name_or_path trl-internal-testing/tiny-random-LlamaForCausalLM --dataset_name stanfordnlp/imdb --learning_rate 1e-4 --lr_scheduler_type cosine",
                shell=True,
                check=True,
            )
        except BaseException:
            self.fail("An error occurred while running the CLI, please double check")

    @unittest.skipIf(sys.platform.startswith("win"), "Skipping on Windows")
    def test_dpo_cli(self):
        try:
            subprocess.run(
                "trl dpo --max_steps 1 --output_dir tmp-dpo --model_name_or_path trl-internal-testing/tiny-random-LlamaForCausalLM --dataset_name trl-internal-testing/tiny-ultrafeedback-binarized --learning_rate 1e-4 --lr_scheduler_type cosine",
                shell=True,
                check=True,
            )
        except BaseException:
            self.fail("An error occurred while running the CLI, please double check")

    def test_env_cli(self):
        output = subprocess.run("trl env", capture_output=True, text=True, shell=True, check=True)
        self.assertIn("- Python version: ", output.stdout)