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# Source code for betty.test_utils.config.collections.sequence

    """
    Test utilities for :py:mod:`betty.config.collections.sequence`.
    """

    from __future__ import annotations

    from typing import Generic, TypeVar
    from typing_extensions import override

    from betty.config import Configuration
    from betty.test_utils.config.collections import ConfigurationCollectionTestBase

    _ConfigurationT = TypeVar("_ConfigurationT", bound=Configuration)

    class ConfigurationSequenceTestBase(
        Generic[_ConfigurationT], ConfigurationCollectionTestBase[int, _ConfigurationT]
    ):
        """
        A base class for testing :py:class:`betty.config.collections.sequence.ConfigurationSequence` implementations.
        """

        @override
        def get_configuration_keys(self) -> tuple[int, int, int, int]:
            return 0, 1, 2, 3

        @override
        async def test___iter__(self) -> None:
            configurations = self.get_configurations()
            sut = self.get_sut(
                [
                    configurations[0],
                    configurations[1],
                ]
            )
            assert [configurations[0], configurations[1]] == list(iter(sut))