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[utils] traverse_obj: More fixes (#6959)

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- Fix result when branching with `traverse_string`
- Fix `slice` path on `dict`s
- Fix tests and docstrings from 21b5ec86c2
- Add `is_iterable_like` helper function

Authored by: Grub4K
This commit is contained in:
Simon Sawicki
2023-04-30 19:50:22 +02:00
committed by GitHub
parent 4d9280c9c8
commit b079c26f0a
2 changed files with 37 additions and 12 deletions
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21
test/test_utils.py
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@@ -2016,7 +2016,7 @@ Line 1
msg='nested `...` queries should work')
self.assertCountEqual(traverse_obj(_TEST_DATA, (..., ..., 'index')), range(4),
msg='`...` query result should be flattened')
self.assertEqual(traverse_obj(range(4), ...), list(range(4)),
self.assertEqual(traverse_obj(iter(range(4)), ...), list(range(4)),
msg='`...` should accept iterables')
# Test function as key
@@ -2025,7 +2025,7 @@ Line 1
msg='function as query key should perform a filter based on (key, value)')
self.assertCountEqual(traverse_obj(_TEST_DATA, lambda _, x: isinstance(x[0], str)), {'str'},
msg='exceptions in the query function should be catched')
self.assertEqual(traverse_obj(range(4), lambda _, x: x % 2 == 0), [0, 2],
self.assertEqual(traverse_obj(iter(range(4)), lambda _, x: x % 2 == 0), [0, 2],
msg='function key should accept iterables')
if __debug__:
with self.assertRaises(Exception, msg='Wrong function signature should raise in debug'):
@@ -2051,6 +2051,17 @@ Line 1
with self.assertRaises(Exception, msg='Sets with length != 1 should raise in debug'):
traverse_obj(_TEST_DATA, {str.upper, str})
# Test `slice` as a key
_SLICE_DATA = [0, 1, 2, 3, 4]
self.assertEqual(traverse_obj(_TEST_DATA, ('dict', slice(1))), None,
msg='slice on a dictionary should not throw')
self.assertEqual(traverse_obj(_SLICE_DATA, slice(1)), _SLICE_DATA[:1],
msg='slice key should apply slice to sequence')
self.assertEqual(traverse_obj(_SLICE_DATA, slice(1, 2)), _SLICE_DATA[1:2],
msg='slice key should apply slice to sequence')
self.assertEqual(traverse_obj(_SLICE_DATA, slice(1, 4, 2)), _SLICE_DATA[1:4:2],
msg='slice key should apply slice to sequence')
# Test alternative paths
self.assertEqual(traverse_obj(_TEST_DATA, 'fail', 'str'), 'str',
msg='multiple `paths` should be treated as alternative paths')
@@ -2234,6 +2245,12 @@ Line 1
self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', (0, 2)),
traverse_string=True), ['s', 'r'],
msg='branching should result in list if `traverse_string`')
self.assertEqual(traverse_obj({}, (0, ...), traverse_string=True), [],
msg='branching should result in list if `traverse_string`')
self.assertEqual(traverse_obj({}, (0, lambda x, y: True), traverse_string=True), [],
msg='branching should result in list if `traverse_string`')
self.assertEqual(traverse_obj({}, (0, slice(1)), traverse_string=True), [],
msg='branching should result in list if `traverse_string`')
# Test is_user_input behavior
_IS_USER_INPUT_DATA = {'range8': list(range(8))}