# SPDX-FileCopyrightText: Copyright 2022-2023, Arm Limited and/or its affiliates.
# SPDX-License-Identifier: Apache-2.0
"""Tests for python package based installations."""
from pathlib import Path
from unittest.mock import MagicMock

import pytest

from mlia.backend.install import DownloadAndInstall
from mlia.backend.install import InstallFromPath
from mlia.backend.install import PyPackageBackendInstallation
from mlia.backend.tosa_checker.install import get_tosa_backend_installation


def test_get_tosa_backend_installation(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    """Test function get_tosa_backend_installation."""
    mock_package_manager = MagicMock()
    monkeypatch.setattr(
        "mlia.backend.install.get_package_manager",
        lambda: mock_package_manager,
    )

    tosa_installation = get_tosa_backend_installation()

    assert isinstance(tosa_installation, PyPackageBackendInstallation)
    assert tosa_installation.name == "tosa-checker"
    assert (
        tosa_installation.description
        == "Tool to check if a ML model is compatible with the TOSA specification"
    )
    assert tosa_installation.could_be_installed
    assert tosa_installation.supports(DownloadAndInstall())
    assert not tosa_installation.supports(InstallFromPath(tmp_path))

    mock_package_manager.packages_installed.return_value = True
    assert tosa_installation.already_installed
    mock_package_manager.packages_installed.assert_called_once_with(["tosa-checker"])

    with pytest.raises(Exception, match=r"Unsupported installation type.*"):
        tosa_installation.install(InstallFromPath(tmp_path))

    mock_package_manager.install.assert_not_called()

    tosa_installation.install(DownloadAndInstall())
    mock_package_manager.install.assert_called_once_with(["tosa-checker"])

    tosa_installation.uninstall()
    mock_package_manager.uninstall.assert_called_once_with(["tosa-checker"])