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import unittest

from gravitino.api.rel.types.types import Types
from gravitino.dto.rel.column_dto import ColumnDTO
from gravitino.dto.rel.partition_utils import PartitionUtils
from gravitino.exceptions.base import IllegalArgumentException


class TestPartitionUtils(unittest.TestCase):
    def setUp(self) -> None:
        self._data_types = [
            Types.StringType.get(),
            Types.IntegerType.get(),
            Types.DateType.get(),
        ]
        self._column_names = [f"column{i}" for i in range(len(self._data_types))]
        self._columns = [
            ColumnDTO.builder()
            .with_name(name=column_name)
            .with_data_type(data_type=data_type)
            .with_comment(comment=f"{column_name} comment")
            .with_nullable(nullable=False)
            .build()
            for column_name, data_type in zip(self._column_names, self._data_types)
        ]

    def test_partition_utils_validate_field_existence(self):
        for column_name in self._column_names:
            PartitionUtils.validate_field_existence(
                columns=self._columns, field_name=[column_name]
            )

    def test_partition_utils_validate_field_existence_with_empty_columns(self):
        with self.assertRaises(IllegalArgumentException):
            PartitionUtils.validate_field_existence([], self._column_names)

    def test_partition_utils_validate_field_existence_not_found(self):
        with self.assertRaises(IllegalArgumentException):
            PartitionUtils.validate_field_existence(self._columns, ["fake_column"])
