# Copyright 2022, New York University and the TUF contributors

# SPDX-License-Identifier: MIT OR Apache-2.0

"""Test ngclient Updater validations."""

import os

import sys

import tempfile

import unittest

from tests import utils

from tests.repository_simulator import RepositorySimulator

from tuf.ngclient import Updater

class TestUpdater(unittest.TestCase):

"""Test ngclient Updater input validation."""

def setUp(self) -> None:

self.temp_dir = tempfile.TemporaryDirectory()

self.metadata_dir = os.path.join(self.temp_dir.name, "metadata")

self.targets_dir = os.path.join(self.temp_dir.name, "targets")

os.mkdir(self.metadata_dir)

os.mkdir(self.targets_dir)

# Setup the repository

self.sim = RepositorySimulator()

def tearDown(self) -> None:

self.temp_dir.cleanup()

def _new_updater(self) -> Updater:

return Updater(

self.metadata_dir,

"https://example.com/metadata/",

self.targets_dir,

"https://example.com/targets/",

fetcher=self.sim,

bootstrap=self.sim.signed_roots[0],

)

def test_bootstrap_argument_required(self) -> None:

with self.assertRaises(TypeError) as ctx:

Updater(

self.metadata_dir,

"https://example.com/metadata/",

fetcher=self.sim,

) # type: ignore[call-arg]

self.assertIn("bootstrap", str(ctx.exception))

def test_local_target_storage_fail(self) -> None:

self.sim.add_target("targets", b"content", "targetpath")

self.sim.targets.version += 1

self.sim.update_snapshot()

updater = self._new_updater()

target_info = updater.get_targetinfo("targetpath")

assert target_info is not None

with self.assertRaises(FileNotFoundError):

updater.download_target(target_info, filepath="")

def test_non_existing_metadata_dir(self) -> None:

non_existing_dir = os.path.join(self.temp_dir.name, "non-existing-dir")

with self.assertRaises(FileNotFoundError):

# Initialize Updater with non-existing metadata_dir

Updater(

non_existing_dir,

"https://example.com/metadata/",

fetcher=self.sim,

bootstrap=None,

)

if __name__ == "__main__":

utils.configure_test_logging(sys.argv)

unittest.main()