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# ==================================================================================================================== #
# _____ _ _ ____ #
# _ __ _ |_ _|__ ___ | (_)_ __ __ _ / ___|___ _ __ ___ _ __ ___ ___ _ __ #
# | '_ \| | | || |/ _ \ / _ \| | | '_ \ / _` || | / _ \| '_ ` _ \| '_ ` _ \ / _ \| '_ \ #
# | |_) | |_| || | (_) | (_) | | | | | | (_| || |__| (_) | | | | | | | | | | | (_) | | | | #
# | .__/ \__, ||_|\___/ \___/|_|_|_| |_|\__, (_)____\___/|_| |_| |_|_| |_| |_|\___/|_| |_| #
# |_| |___/ |___/ #
# ==================================================================================================================== #
# Authors: #
# Patrick Lehmann #
# #
# License: #
# ==================================================================================================================== #
# Copyright 2017-2025 Patrick Lehmann - Bötzingen, Germany #
# #
# 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. #
# #
# SPDX-License-Identifier: Apache-2.0 #
# ==================================================================================================================== #
#
"""
Unit tests for :func:`firstItem` and :func:`lastItem`.
"""
from unittest import TestCase
from pyTooling.Common import firstItem, lastItem, count
if __name__ == "__main__": # pragma: no cover
print("ERROR: you called a testcase declaration file as an executable module.")
print("Use: 'python -m unittest <testcase module>'")
exit(1)
class Count(TestCase):
def test_count_empty(self) -> None:
c = count(range(0))
self.assertEqual(0, c)
def test_count_1(self) -> None:
c = count(range(1))
self.assertEqual(1, c)
def test_count_5(self) -> None:
c = count(range(5))
self.assertEqual(5, c)
def test_count_10(self) -> None:
length = 10
l = [i for i in range(length)]
g = (i for i in l)
c = count(g)
self.assertEqual(length, c)
class First(TestCase):
def test_FirstItem0(self) -> None:
d = []
with self.assertRaises(ValueError):
_ = firstItem(d)
def test_FirstItem1(self) -> None:
d = [1]
f = firstItem(d)
self.assertEqual(1, f)
def test_FirstItem2(self) -> None:
d = [1, 2]
f = firstItem(d)
self.assertEqual(1, f)
class Last(TestCase):
def test_LastItem0(self) -> None:
d = []
with self.assertRaises(ValueError):
_ = lastItem(d)
def test_LastItem1(self) -> None:
d = [1]
l = lastItem(d)
self.assertEqual(1, l)
def test_LastItem2(self) -> None:
d = [1, 2]
l = lastItem(d)
self.assertEqual(2, l)
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