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from __future__ import annotations

from collections.abc import Iterable
from unittest import mock

from airflow_shared.module_loading import entry_points_with_dist, metadata


class MockDistribution:
    def __init__(self, name: str, entry_points: Iterable[metadata.EntryPoint]) -> None:
        self.metadata = {"Name": name}
        self.entry_points = entry_points


class MockMetadata:
    def distributions(self):
        return [
            MockDistribution(
                "dist1",
                [metadata.EntryPoint("a", "b", "group_x"), metadata.EntryPoint("c", "d", "group_y")],
            ),
            MockDistribution("Dist2", [metadata.EntryPoint("e", "f", "group_x")]),
            MockDistribution("dist2", [metadata.EntryPoint("g", "h", "group_x")]),  # Duplicated name.
        ]


@mock.patch("airflow_shared.module_loading.metadata", MockMetadata())
def test_entry_points_with_dist():
    entries = list(entry_points_with_dist("group_x"))

    # Only "group_x" entries are loaded. Distributions are not deduplicated.
    assert [dist.metadata["Name"] for _, dist in entries] == ["dist1", "Dist2", "dist2"]
    assert [ep.name for ep, _ in entries] == ["a", "e", "g"]
