import unittest
from collections.abc import Callable
from typing import Any

from IPython.core.interactiveshell import InteractiveShell

from ipython_demo.shell import Shell


class TestMyIdeas(unittest.TestCase):
    def test_MY_two_instances(self):
        InteractiveShell1 = Shell("InteractiveShell1").init_shell()
        InteractiveShell2 = Shell("InteractiveShell2").init_shell()

        def ok[T](
            resolve: Callable[[InteractiveShell], Any],
            method: Callable[[T, T], Any],
        ) -> None:
            t1 = resolve(InteractiveShell1)
            t2 = resolve(InteractiveShell2)
            method(t1, t2)

        ok(
            lambda shell: getattr(shell.history_manager, "outputs", None),
            self.assertIsNot,
        )
        ok(lambda shell: shell.display_formatter, self.assertIsNot)
        ok(lambda shell: shell.display_pub, self.assertIsNot)
        ok(lambda shell: shell.displayhook, self.assertIsNot)
        ok(lambda shell: shell.history_manager, self.assertIsNot)
        ok(lambda shell: shell.user_ns, self.assertIsNot)


if __name__ == "__main__":
    unittest.main()