tests/util/test_class_utils.py

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from unittest import TestCase

from liminal.core.util import class_util
from tests.util.test_pkg_1.test_clazz_base import A, Z
from tests.util.test_pkg_1.test_pkg_1_1.test_clazz_child_1 import B
from tests.util.test_pkg_1.test_pkg_1_1.test_clazz_child_2 import C
from tests.util.test_pkg_1.test_pkg_1_1.test_pkg_1_1_1.test_clazz_leaf_1 import F, D, E
from tests.util.test_pkg_1.test_pkg_1_1.test_pkg_1_1_2.test_clazz_leaf_2 import G, H


class Test(TestCase):
    def test_find_full_hierarchy_from_root(self):
        expected_set = set([B, C, D, E, H, Z])
        self.hierarchy_check(A, expected_set)

    def test_find_full_hierarchy_mid_tree_in_package(self):
        expected_set = set([G])
        self.hierarchy_check(F, expected_set)

    def test_leaf_class(self):
        expected_set = set()
        self.hierarchy_check(G, expected_set)

    def hierarchy_check(self, clazz, expected_set):
        pkg_root = 'tests.util.test_pkg_1'
        full_tree = class_util.find_subclasses_in_packages(
            [pkg_root],
            clazz)

        res_set = set()
        res_set.update(full_tree.values())
        self.assertEqual(res_set, expected_set)