from __future__ import annotations

from yuxi.channel.channels._registry import get_compat_registry, register_channel


class TestCompatRegistry:
    def test_register_and_get(self) -> None:
        class FakeAdapter:
            pass

        register_channel("test_channel", FakeAdapter)
        registry = get_compat_registry()
        assert "test_channel" in registry
        assert registry["test_channel"] is FakeAdapter

    def test_get_compat_registry_returns_copy(self) -> None:
        r1 = get_compat_registry()
        r2 = get_compat_registry()
        assert r1 is not r2
        assert r1 == r2