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#!/usr/bin/env python
#
# Copyright (c), 2018-2025, SISSA (International School for Advanced Studies).
# All rights reserved.
# This file is distributed under the terms of the MIT License.
# See the file 'LICENSE' in the root directory of the present
# distribution, or http://opensource.org/licenses/MIT.
#
# @author Davide Brunato <brunato@sissa.it>
#
import unittest
from elementpath.sequences import xlist, empty_sequence, \
sequence_concat, sequence_count, iterate_sequence, XSequence
class ListSequencesTest(unittest.TestCase):
def test_string_repr(self):
self.assertEqual(repr(xlist([])), '[]')
self.assertEqual(repr(xlist([1, 2, 3])), '[1, 2, 3]')
self.assertEqual(repr(xlist((x for x in [1, 2, 3]))), '[1, 2, 3]')
self.assertEqual(repr(xlist([1])), '[1]')
self.assertEqual(str(xlist([1, 2, 3])), '[1, 2, 3]')
self.assertEqual(str(xlist([1])), '[1]')
self.assertEqual(str(xlist()), '[]')
self.assertEqual(repr(xlist([1, 2, 3])), '[1, 2, 3]')
self.assertEqual(repr(xlist([1])), '[1]')
self.assertEqual(repr(xlist()), '[]')
def test_empty_sequence(self):
self.assertNotEqual(empty_sequence(), ())
self.assertEqual(empty_sequence(), [])
self.assertEqual(empty_sequence(), xlist())
self.assertNotIsInstance(empty_sequence(), xlist)
def test_sequence_concat(self):
self.assertListEqual(sequence_concat([], []), [])
self.assertListEqual(sequence_concat([1], []), [1])
self.assertTrue(sequence_concat([1], []) == 1)
self.assertListEqual(sequence_concat([], [4]), [4])
self.assertListEqual(sequence_concat([1], [8]), [1, 8])
self.assertNotIsInstance(sequence_concat([], []), xlist)
self.assertIsInstance(sequence_concat([], [5]), xlist)
self.assertNotIsInstance(sequence_concat([1], [8]), xlist)
def test_count(self):
self.assertEqual(sequence_count(['a', 'b', 'c']), 3)
def test_iterate_sequence(self):
def action(item, pos):
yield item * pos
self.assertEqual(iterate_sequence([1, 2, 3], action=action), [1, 4, 9])
def action(item, pos):
yield item
yield item * pos
self.assertEqual(iterate_sequence([1, 2, 3], action=action), [1, 1, 2, 4, 3, 9])
class XSequenceTest(unittest.TestCase):
def test_string_repr(self):
self.assertEqual(repr(XSequence([])), 'XSequence([])')
self.assertEqual(repr(XSequence([1, 2, 3])), 'XSequence([1, 2, 3])')
self.assertEqual(repr(XSequence((x for x in [1, 2, 3]))), 'XSequence([1, 2, 3])')
self.assertEqual(repr(XSequence([1])), 'XSequence([1])')
self.assertEqual(str(XSequence([1, 2, 3])), '(1, 2, 3)')
self.assertEqual(str(XSequence([1])), '(1)')
self.assertEqual(str(XSequence()), '()')
self.assertEqual(repr(XSequence([1, 2, 3])), 'XSequence([1, 2, 3])')
self.assertEqual(repr(XSequence([1])), 'XSequence([1])')
self.assertEqual(repr(XSequence()), 'XSequence([])')
def test_initialization(self):
sequence = XSequence([1, 2, 3])
self.assertEqual(sequence, [1, 2, 3])
def test_comparison(self):
self.assertNotEqual(empty_sequence(), ())
self.assertEqual(empty_sequence(), [])
self.assertNotEqual((), empty_sequence())
self.assertEqual([], empty_sequence())
self.assertNotEqual(empty_sequence(), 0)
self.assertNotEqual(empty_sequence(), '')
self.assertNotEqual(empty_sequence(), 1)
self.assertEqual(XSequence([1]), 1)
self.assertEqual(XSequence([1]), [1])
self.assertEqual(XSequence([1]), 1)
def test_concatenation(self):
sequence = XSequence([1, 2, 3])
self.assertEqual(sequence + [4], [1, 2, 3, 4])
self.assertEqual([] + sequence, [1, 2, 3])
self.assertEqual([-1, 0] + sequence, [-1, 0, 1, 2, 3])
s1 = XSequence([1, 2, 3])
s2 = XSequence([4, 5, 6])
self.assertEqual(s1 + s2, [1, 2, 3, 4, 5, 6])
self.assertEqual(s2 + s1, [4, 5, 6, 1, 2, 3])
def test_sequence_count(self):
self.assertEqual(XSequence.sequence_count(['a', 'b', 'c']), 3)
def test_nested_sequence(self):
self.assertEqual(list(iter(XSequence([]))), [])
with self.assertRaises(TypeError):
list(iter(XSequence([[], 8])))
with self.assertRaises(TypeError):
list(iter(XSequence([[], [], []])))
with self.assertRaises(TypeError):
list(iter(XSequence([[], 8, [9]])))
def test_empty_sequence(self):
self.assertEqual(XSequence.empty_sequence(), ())
self.assertIsInstance(XSequence.empty_sequence(), XSequence)
def test_sequence_concat(self):
self.assertEqual(XSequence.sequence_concat([], []), [])
self.assertIsInstance(XSequence.sequence_concat([], []), XSequence)
result = XSequence.sequence_concat([90, ], [32])
self.assertIsInstance(result, XSequence)
self.assertEqual(empty_sequence(), [])
def test_iterate_sequence(self):
def action(item, pos):
yield item * pos
result = XSequence.iterate_sequence([1, 2, 3], action=action)
self.assertEqual(result, [1, 4, 9])
self.assertIsInstance(result, XSequence)
def action(item, pos):
yield item
yield item * pos
result = XSequence.iterate_sequence([1, 2, 3], action=action)
self.assertEqual(result, [1, 1, 2, 4, 3, 9])
self.assertIsInstance(result, XSequence)
if __name__ == '__main__':
unittest.main()
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