# Copyright (c) 2022 PaddlePaddle Authors. 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 os
import subprocess
import sys
import tempfile
import unittest

from paddle.distributed.auto_parallel.converter import Converter


class TestConverter(unittest.TestCase):
    def test_converter(self):
        file_dir = os.path.dirname(os.path.abspath(__file__))
        launch_model_path = os.path.join(file_dir, "converter.py")

        if os.environ.get("WITH_COVERAGE", "OFF") == "ON":
            coverage_args = ["-m", "coverage", "run", "--branch", "-p"]
        else:
            coverage_args = []

        tmp_dir = tempfile.TemporaryDirectory()
        cmd = (
            [sys.executable, "-u"]
            + coverage_args
            + [
                "-m",
                "paddle.distributed.launch",
                "--devices",
                "0,1",
                "--log_dir",
                tmp_dir.name,
                launch_model_path,
            ]
        )

        process = subprocess.Popen(cmd)
        process.wait()
        self.assertEqual(process.returncode, 0)

        tmp_dir.cleanup()

    def test_input_invalid(self):
        with self.assertRaises(ValueError):
            Converter({}, [], [])
        with self.assertRaises(TypeError):
            Converter([0, 1], [], [])
        with self.assertRaises(ValueError):
            Converter({"tmp_0": [0]}, {}, [])
        with self.assertRaises(TypeError):
            Converter({"tmp_0": [0]}, [0], [])

        strategy_1 = {
            'tmp_0': {
                "process_shape": [1],
                "process_group": [0],
                "dims_mapping": [-1],
            }
        }
        with self.assertRaises(TypeError):
            Converter({"tmp_0": [0]}, strategy_1, [])


if __name__ == "__main__":
    unittest.main()