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test_awking.py
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test_awking.py
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# pylint: disable=missing-docstring
import doctest
import re
from unittest import TestCase
import awking
from awking import (LazyRecord, RangeGrouper, _ensure_predicate, _make_columns,
records)
class TestEnsurePredicate(TestCase):
def test_string(self):
predicate = _ensure_predicate('^a')
self.assertTrue(callable(predicate))
def test_regexp(self):
predicate = _ensure_predicate(re.compile('^a'))
self.assertTrue(callable(predicate))
def test_function(self):
# noinspection PyUnusedLocal
# pylint: disable=unused-argument
def func(param):
return True
predicate = _ensure_predicate(func)
self.assertTrue(callable(predicate))
def test_invalid(self):
with self.assertRaises(TypeError):
_ensure_predicate(5)
class TestRangeGrouper(TestCase):
def test_one_group(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x == 3,
[1, 2, 5, 3, 5])
self.assertEqual([[2, 5, 3]], [list(x) for x in grouper])
def test_two_groups(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x == 3,
[1, 2, 5, 3, 5, 2, 4, 4, 3])
self.assertEqual([[2, 5, 3], [2, 4, 4, 3]],
[list(x) for x in grouper])
def test_no_match(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x == 3,
[1, 4, 0, 1])
self.assertEqual([], [list(x) for x in grouper])
def test_outer_iteration(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x == 3,
[1, 2, 5, 3, 5, 2, 4, 4, 3, 6])
group1 = next(grouper)
group2 = next(grouper)
with self.assertRaises(StopIteration):
next(grouper)
self.assertEqual([2, 5, 3], list(group1))
self.assertEqual([2, 4, 4, 3], list(group2))
def test_regexp(self):
grouper = RangeGrouper(re.compile('a'), re.compile('b'),
'xf ga zu jd bq zu aa qa gb'.split())
self.assertEqual([['ga', 'zu', 'jd', 'bq'], ['aa', 'qa', 'gb']],
[list(x) for x in grouper])
def test_double_start(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x == 3,
[1, 2, 2, 5, 3, 5, 2, 4, 4, 3])
self.assertEqual([[2, 2, 5, 3], [2, 4, 4, 3]],
[list(x) for x in grouper])
def test_double_end(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x == 3,
[1, 2, 5, 3, 3, 5, 2, 4, 4, 3])
self.assertEqual([[2, 5, 3], [2, 4, 4, 3]],
[list(x) for x in grouper])
def test_one_item_group(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x % 2 == 0,
[1, 2, 5, 3, 3, 5, 4, 3])
self.assertEqual([[2]], [list(x) for x in grouper])
def test_truncated_last_group(self):
grouper = RangeGrouper(lambda x: x == 2, lambda x: x == 3,
[1, 2, 5, 3, 3, 5, 2, 4, 4])
self.assertEqual([[2, 5, 3], [2, 4, 4]],
[list(x) for x in grouper])
class TestLazyRecord(TestCase):
def test_ellipsis(self):
text = 'abc def jkzzz'
record = LazyRecord(text, lambda x: x.split())
self.assertEqual(text, record[...])
def test_numerical_indices(self):
text = 'abc def jkzzz'
record = LazyRecord(text, lambda x: x.split())
self.assertEqual(('abc', 'jkzzz', 'jkzzz'),
(record[0], record[2], record[-1]))
def test_out_of_range(self):
text = 'abc def jkzzz'
record = LazyRecord(text, lambda x: x.split())
self.assertEqual(3, len(record))
with self.assertRaises(IndexError):
# noinspection PyStatementEffect
# pylint: disable=pointless-statement
record[3]
def test_full_range(self):
text = 'abc def jkzzz'
record = LazyRecord(text, lambda x: x.split())
self.assertEqual(['abc', 'def', 'jkzzz'], record[:])
def test_str(self):
text = 'abc def jkzzz'
record = LazyRecord(text, lambda x: x.split())
self.assertEqual(text, str(record))
class TestMakeColumns(TestCase):
def test_one(self):
self.assertEqual([(0, 5)], _make_columns([5]))
def test_two(self):
self.assertEqual([(0, 3), (3, 5)], _make_columns([3, 2]))
def test_tail(self):
self.assertEqual([(0, 3), (3, 5), (5, None)],
_make_columns([3, 2, ...]))
class TestRecords(TestCase):
def test_blank(self):
lines = ['abc def jkzzz']
self.assertEqual(['abc', 'def', 'jkzzz'], next(records(lines))[:])
def test_separator(self):
lines = ['abx-something--rrr']
self.assertEqual(['abx', 'something', '', 'rrr'],
next(records(lines, separator='-'))[:])
def test_regexp(self):
lines = ['abx-something--rrr']
self.assertEqual(['abx', 'something', 'rrr'],
next(records(lines, separator=re.compile('-+')))[:])
def test_widths(self):
lines = ['abx-something--rrr']
self.assertEqual(['abx', '-somet', 'hing--', 'rrr'],
next(records(lines, widths=[3, 6, 6, 3]))[:])
def test_widths_with_tail(self):
lines = ['abx-something--rrr']
self.assertEqual(['abx', '-somet', 'hing--', 'rrr'],
next(records(lines, widths=[3, 6, 6, ...]))[:])
def test_pattern(self):
lines = ['abx-something--rrr']
self.assertEqual(['abx', 'something', 'rrr'],
next(records(lines, pattern='[a-z]+'))[:])
def test_pattern_regexp(self):
lines = ['abx-something--rrr']
self.assertEqual(['abx', 'something', 'rrr'],
next(records(lines, pattern=re.compile('[a-z]+')))[:])
# noinspection PyUnusedLocal
# pylint: disable=unused-argument
def load_tests(loader, tests, ignore):
tests.addTests(doctest.DocTestSuite(awking))
return tests