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#!/usr/bin/env python3
# Copyright 2025 Google LLC
# 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.
import unittest
from . IndexRange import IndexRange
class TestIndexRange(unittest.TestCase):
def test_creation(self) -> None:
x: IndexRange = IndexRange(4,5);
self.assertEqual(x.first, 4)
self.assertEqual(x.count, 5)
def test_creation_bad_first(self) -> None:
self.assertRaises(Exception, IndexRange, -1, 5)
def test_creation_bad_count(self) -> None:
self.assertRaises(Exception, IndexRange, 1, -5)
def test_distinct(self) -> None:
x = IndexRange(4, 5);
y = IndexRange(6, 7);
self.assertNotEqual(x.first, y.first)
self.assertNotEqual(x.count, y.count)
def test_equality(self) -> None:
self.assertEqual(IndexRange(4,5), IndexRange(4,5))
self.assertNotEqual(IndexRange(4,5), IndexRange(4,7))
self.assertNotEqual(IndexRange(7,5), IndexRange(4,5))
def test_hash_heuristic(self) -> None:
x = hash(IndexRange(4,5))
y = hash(IndexRange(4,5))
z = hash(IndexRange(6,7))
self.assertEqual(x, y)
self.assertNotEqual(x, z)
if __name__ == "__main__":
unittest.main()
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