How to use the httpcore.NetworkError function in httpcore

side_effect=ConnectionRefusedError("test request blocked"),
        ) as open_connection:
            with pytest.raises(NetworkError):
                await client.get("https://example.org/")

        assert open_connection.called is True
        assert request.called is True
        assert request.pass_through is expected

    with MockTransport() as respx_mock:
        request = respx_mock.add(**parameters)

        with asynctest.mock.patch(
            "socket.socket.connect", side_effect=socket.error("test request blocked"),
        ) as connect:
            with pytest.raises(NetworkError):
                httpx.get("https://example.org/")

        assert connect.called is True
        assert request.called is True
        assert request.pass_through is expected

async def test_pass_through(client, parameters, expected):
    async with MockTransport() as respx_mock:
        request = respx_mock.add(**parameters)

        with asynctest.mock.patch(
            "asyncio.open_connection",
            side_effect=ConnectionRefusedError("test request blocked"),
        ) as open_connection:
            with pytest.raises(NetworkError):
                await client.get("https://example.org/")

        assert open_connection.called is True
        assert request.called is True
        assert request.pass_through is expected

    with MockTransport() as respx_mock:
        request = respx_mock.add(**parameters)

        with asynctest.mock.patch(
            "socket.socket.connect", side_effect=socket.error("test request blocked"),
        ) as connect:
            with pytest.raises(NetworkError):
                httpx.get("https://example.org/")

        assert connect.called is True