mirror of https://github.com/yt-dlp/yt-dlp.git
[test] `traversal`: Separate traversal tests (#9574)
Authored by: Grub4K
This commit is contained in:
Simon Sawicki
GitHub
parent
58dd0f8d1e
commit
979ce2e786
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@ -0,0 +1,379 @@
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import re
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import xml.etree.ElementTree
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import pytest
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from yt_dlp.utils import dict_get, int_or_none, str_or_none
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from yt_dlp.utils.traversal import traverse_obj
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_TEST_DATA = {
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100: 100,
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1.2: 1.2,
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'str': 'str',
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'None': None,
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'...': ...,
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'urls': [
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{'index': 0, 'url': 'https://www.example.com/0'},
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{'index': 1, 'url': 'https://www.example.com/1'},
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],
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'data': (
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{'index': 2},
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{'index': 3},
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),
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'dict': {},
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}
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class TestTraversal:
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def test_dict_get(self):
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FALSE_VALUES = {
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'none': None,
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'false': False,
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'zero': 0,
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'empty_string': '',
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'empty_list': [],
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}
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d = {**FALSE_VALUES, 'a': 42}
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assert dict_get(d, 'a') == 42
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assert dict_get(d, 'b') is None
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assert dict_get(d, 'b', 42) == 42
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assert dict_get(d, ('a',)) == 42
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assert dict_get(d, ('b', 'a')) == 42
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assert dict_get(d, ('b', 'c', 'a', 'd')) == 42
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assert dict_get(d, ('b', 'c')) is None
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assert dict_get(d, ('b', 'c'), 42) == 42
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for key, false_value in FALSE_VALUES.items():
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assert dict_get(d, ('b', 'c', key)) is None
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assert dict_get(d, ('b', 'c', key), skip_false_values=False) == false_value
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def test_traversal_base(self):
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assert traverse_obj(_TEST_DATA, ('str',)) == 'str', \
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'allow tuple path'
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assert traverse_obj(_TEST_DATA, ['str']) == 'str', \
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'allow list path'
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assert traverse_obj(_TEST_DATA, (value for value in ("str",))) == 'str', \
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'allow iterable path'
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assert traverse_obj(_TEST_DATA, 'str') == 'str', \
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'single items should be treated as a path'
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assert traverse_obj(_TEST_DATA, 100) == 100, \
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'allow int path'
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assert traverse_obj(_TEST_DATA, 1.2) == 1.2, \
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'allow float path'
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assert traverse_obj(_TEST_DATA, None) == _TEST_DATA, \
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'`None` should not perform any modification'
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def test_traversal_ellipsis(self):
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assert traverse_obj(_TEST_DATA, ...) == [x for x in _TEST_DATA.values() if x not in (None, {})], \
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'`...` should give all non discarded values'
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assert traverse_obj(_TEST_DATA, ('urls', 0, ...)) == list(_TEST_DATA['urls'][0].values()), \
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'`...` selection for dicts should select all values'
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assert traverse_obj(_TEST_DATA, (..., ..., 'url')) == ['https://www.example.com/0', 'https://www.example.com/1'], \
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'nested `...` queries should work'
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assert traverse_obj(_TEST_DATA, (..., ..., 'index')) == list(range(4)), \
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'`...` query result should be flattened'
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assert traverse_obj(iter(range(4)), ...) == list(range(4)), \
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'`...` should accept iterables'
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def test_traversal_function(self):
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filter_func = lambda x, y: x == 'urls' and isinstance(y, list)
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assert traverse_obj(_TEST_DATA, filter_func) == [_TEST_DATA['urls']], \
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'function as query key should perform a filter based on (key, value)'
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assert traverse_obj(_TEST_DATA, lambda _, x: isinstance(x[0], str)) == ['str'], \
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'exceptions in the query function should be catched'
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assert traverse_obj(iter(range(4)), lambda _, x: x % 2 == 0) == [0, 2], \
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'function key should accept iterables'
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# Wrong function signature should raise (debug mode)
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with pytest.raises(Exception):
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traverse_obj(_TEST_DATA, lambda a: ...)
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with pytest.raises(Exception):
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traverse_obj(_TEST_DATA, lambda a, b, c: ...)
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def test_traversal_set(self):
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# transformation/type, like `expected_type`
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assert traverse_obj(_TEST_DATA, (..., {str.upper}, )) == ['STR'], \
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'Function in set should be a transformation'
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assert traverse_obj(_TEST_DATA, (..., {str})) == ['str'], \
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'Type in set should be a type filter'
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assert traverse_obj(_TEST_DATA, {dict}) == _TEST_DATA, \
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'A single set should be wrapped into a path'
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assert traverse_obj(_TEST_DATA, (..., {str.upper})) == ['STR'], \
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'Transformation function should not raise'
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expected = [x for x in map(str_or_none, _TEST_DATA.values()) if x is not None]
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assert traverse_obj(_TEST_DATA, (..., {str_or_none})) == expected, \
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'Function in set should be a transformation'
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assert traverse_obj(_TEST_DATA, ('fail', {lambda _: 'const'})) == 'const', \
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'Function in set should always be called'
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# Sets with length != 1 should raise in debug
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with pytest.raises(Exception):
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traverse_obj(_TEST_DATA, set())
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with pytest.raises(Exception):
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traverse_obj(_TEST_DATA, {str.upper, str})
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def test_traversal_slice(self):
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_SLICE_DATA = [0, 1, 2, 3, 4]
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assert traverse_obj(_TEST_DATA, ('dict', slice(1))) is None, \
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'slice on a dictionary should not throw'
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assert traverse_obj(_SLICE_DATA, slice(1)) == _SLICE_DATA[:1], \
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'slice key should apply slice to sequence'
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assert traverse_obj(_SLICE_DATA, slice(1, 2)) == _SLICE_DATA[1:2], \
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'slice key should apply slice to sequence'
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assert traverse_obj(_SLICE_DATA, slice(1, 4, 2)) == _SLICE_DATA[1:4:2], \
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'slice key should apply slice to sequence'
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def test_traversal_alternatives(self):
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assert traverse_obj(_TEST_DATA, 'fail', 'str') == 'str', \
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'multiple `paths` should be treated as alternative paths'
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assert traverse_obj(_TEST_DATA, 'str', 100) == 'str', \
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'alternatives should exit early'
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assert traverse_obj(_TEST_DATA, 'fail', 'fail') is None, \
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'alternatives should return `default` if exhausted'
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assert traverse_obj(_TEST_DATA, (..., 'fail'), 100) == 100, \
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'alternatives should track their own branching return'
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assert traverse_obj(_TEST_DATA, ('dict', ...), ('data', ...)) == list(_TEST_DATA['data']), \
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'alternatives on empty objects should search further'
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def test_traversal_branching_nesting(self):
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assert traverse_obj(_TEST_DATA, ('urls', (3, 0), 'url')) == ['https://www.example.com/0'], \
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'tuple as key should be treated as branches'
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assert traverse_obj(_TEST_DATA, ('urls', [3, 0], 'url')) == ['https://www.example.com/0'], \
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'list as key should be treated as branches'
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assert traverse_obj(_TEST_DATA, ('urls', ((1, 'fail'), (0, 'url')))) == ['https://www.example.com/0'], \
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'double nesting in path should be treated as paths'
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assert traverse_obj(['0', [1, 2]], [(0, 1), 0]) == [1], \
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'do not fail early on branching'
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expected = ['https://www.example.com/0', 'https://www.example.com/1']
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assert traverse_obj(_TEST_DATA, ('urls', ((0, ('fail', 'url')), (1, 'url')))) == expected, \
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'tripple nesting in path should be treated as branches'
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assert traverse_obj(_TEST_DATA, ('urls', ('fail', (..., 'url')))) == expected, \
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'ellipsis as branch path start gets flattened'
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def test_traversal_dict(self):
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assert traverse_obj(_TEST_DATA, {0: 100, 1: 1.2}) == {0: 100, 1: 1.2}, \
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'dict key should result in a dict with the same keys'
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expected = {0: 'https://www.example.com/0'}
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assert traverse_obj(_TEST_DATA, {0: ('urls', 0, 'url')}) == expected, \
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'dict key should allow paths'
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expected = {0: ['https://www.example.com/0']}
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assert traverse_obj(_TEST_DATA, {0: ('urls', (3, 0), 'url')}) == expected, \
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'tuple in dict path should be treated as branches'
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assert traverse_obj(_TEST_DATA, {0: ('urls', ((1, 'fail'), (0, 'url')))}) == expected, \
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'double nesting in dict path should be treated as paths'
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expected = {0: ['https://www.example.com/1', 'https://www.example.com/0']}
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assert traverse_obj(_TEST_DATA, {0: ('urls', ((1, ('fail', 'url')), (0, 'url')))}) == expected, \
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'tripple nesting in dict path should be treated as branches'
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assert traverse_obj(_TEST_DATA, {0: 'fail'}) == {}, \
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'remove `None` values when top level dict key fails'
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assert traverse_obj(_TEST_DATA, {0: 'fail'}, default=...) == {0: ...}, \
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'use `default` if key fails and `default`'
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assert traverse_obj(_TEST_DATA, {0: 'dict'}) == {}, \
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'remove empty values when dict key'
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assert traverse_obj(_TEST_DATA, {0: 'dict'}, default=...) == {0: ...}, \
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'use `default` when dict key and `default`'
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assert traverse_obj(_TEST_DATA, {0: {0: 'fail'}}) == {}, \
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'remove empty values when nested dict key fails'
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assert traverse_obj(None, {0: 'fail'}) == {}, \
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'default to dict if pruned'
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assert traverse_obj(None, {0: 'fail'}, default=...) == {0: ...}, \
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'default to dict if pruned and default is given'
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assert traverse_obj(_TEST_DATA, {0: {0: 'fail'}}, default=...) == {0: {0: ...}}, \
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'use nested `default` when nested dict key fails and `default`'
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assert traverse_obj(_TEST_DATA, {0: ('dict', ...)}) == {}, \
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'remove key if branch in dict key not successful'
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def test_traversal_default(self):
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_DEFAULT_DATA = {'None': None, 'int': 0, 'list': []}
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assert traverse_obj(_DEFAULT_DATA, 'fail') is None, \
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'default value should be `None`'
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assert traverse_obj(_DEFAULT_DATA, 'fail', 'fail', default=...) == ..., \
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'chained fails should result in default'
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assert traverse_obj(_DEFAULT_DATA, 'None', 'int') == 0, \
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'should not short cirquit on `None`'
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assert traverse_obj(_DEFAULT_DATA, 'fail', default=1) == 1, \
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'invalid dict key should result in `default`'
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assert traverse_obj(_DEFAULT_DATA, 'None', default=1) == 1, \
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'`None` is a deliberate sentinel and should become `default`'
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assert traverse_obj(_DEFAULT_DATA, ('list', 10)) is None, \
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'`IndexError` should result in `default`'
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assert traverse_obj(_DEFAULT_DATA, (..., 'fail'), default=1) == 1, \
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'if branched but not successful return `default` if defined, not `[]`'
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assert traverse_obj(_DEFAULT_DATA, (..., 'fail'), default=None) is None, \
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'if branched but not successful return `default` even if `default` is `None`'
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assert traverse_obj(_DEFAULT_DATA, (..., 'fail')) == [], \
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'if branched but not successful return `[]`, not `default`'
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assert traverse_obj(_DEFAULT_DATA, ('list', ...)) == [], \
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'if branched but object is empty return `[]`, not `default`'
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assert traverse_obj(None, ...) == [], \
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'if branched but object is `None` return `[]`, not `default`'
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assert traverse_obj({0: None}, (0, ...)) == [], \
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'if branched but state is `None` return `[]`, not `default`'
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@pytest.mark.parametrize('path', [
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('fail', ...),
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(..., 'fail'),
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100 * ('fail',) + (...,),
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(...,) + 100 * ('fail',),
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])
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def test_traversal_branching(self, path):
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assert traverse_obj({}, path) == [], \
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'if branched but state is `None`, return `[]` (not `default`)'
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assert traverse_obj({}, 'fail', path) == [], \
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'if branching in last alternative and previous did not match, return `[]` (not `default`)'
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assert traverse_obj({0: 'x'}, 0, path) == 'x', \
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'if branching in last alternative and previous did match, return single value'
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assert traverse_obj({0: 'x'}, path, 0) == 'x', \
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'if branching in first alternative and non-branching path does match, return single value'
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assert traverse_obj({}, path, 'fail') is None, \
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'if branching in first alternative and non-branching path does not match, return `default`'
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def test_traversal_expected_type(self):
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_EXPECTED_TYPE_DATA = {'str': 'str', 'int': 0}
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assert traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=str) == 'str', \
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'accept matching `expected_type` type'
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assert traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=int) is None, \
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'reject non matching `expected_type` type'
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assert traverse_obj(_EXPECTED_TYPE_DATA, 'int', expected_type=lambda x: str(x)) == '0', \
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'transform type using type function'
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assert traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=lambda _: 1 / 0) is None, \
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'wrap expected_type fuction in try_call'
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assert traverse_obj(_EXPECTED_TYPE_DATA, ..., expected_type=str) == ['str'], \
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'eliminate items that expected_type fails on'
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assert traverse_obj(_TEST_DATA, {0: 100, 1: 1.2}, expected_type=int) == {0: 100}, \
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'type as expected_type should filter dict values'
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assert traverse_obj(_TEST_DATA, {0: 100, 1: 1.2, 2: 'None'}, expected_type=str_or_none) == {0: '100', 1: '1.2'}, \
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'function as expected_type should transform dict values'
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assert traverse_obj(_TEST_DATA, ({0: 1.2}, 0, {int_or_none}), expected_type=int) == 1, \
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'expected_type should not filter non final dict values'
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assert traverse_obj(_TEST_DATA, {0: {0: 100, 1: 'str'}}, expected_type=int) == {0: {0: 100}}, \
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'expected_type should transform deep dict values'
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assert traverse_obj(_TEST_DATA, [({0: '...'}, {0: '...'})], expected_type=type(...)) == [{0: ...}, {0: ...}], \
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'expected_type should transform branched dict values'
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assert traverse_obj({1: {3: 4}}, [(1, 2), 3], expected_type=int) == [4], \
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'expected_type regression for type matching in tuple branching'
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assert traverse_obj(_TEST_DATA, ['data', ...], expected_type=int) == [], \
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'expected_type regression for type matching in dict result'
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def test_traversal_get_all(self):
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_GET_ALL_DATA = {'key': [0, 1, 2]}
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assert traverse_obj(_GET_ALL_DATA, ('key', ...), get_all=False) == 0, \
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'if not `get_all`, return only first matching value'
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assert traverse_obj(_GET_ALL_DATA, ..., get_all=False) == [0, 1, 2], \
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'do not overflatten if not `get_all`'
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def test_traversal_casesense(self):
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_CASESENSE_DATA = {
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'KeY': 'value0',
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0: {
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'KeY': 'value1',
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0: {'KeY': 'value2'},
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},
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}
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assert traverse_obj(_CASESENSE_DATA, 'key') is None, \
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'dict keys should be case sensitive unless `casesense`'
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assert traverse_obj(_CASESENSE_DATA, 'keY', casesense=False) == 'value0', \
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'allow non matching key case if `casesense`'
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assert traverse_obj(_CASESENSE_DATA, [0, ('keY',)], casesense=False) == ['value1'], \
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'allow non matching key case in branch if `casesense`'
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assert traverse_obj(_CASESENSE_DATA, [0, ([0, 'keY'],)], casesense=False) == ['value2'], \
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'allow non matching key case in branch path if `casesense`'
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def test_traversal_traverse_string(self):
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_TRAVERSE_STRING_DATA = {'str': 'str', 1.2: 1.2}
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assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', 0)) is None, \
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'do not traverse into string if not `traverse_string`'
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assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', 0), traverse_string=True) == 's', \
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'traverse into string if `traverse_string`'
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assert traverse_obj(_TRAVERSE_STRING_DATA, (1.2, 1), traverse_string=True) == '.', \
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'traverse into converted data if `traverse_string`'
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assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', ...), traverse_string=True) == 'str', \
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'`...` should result in string (same value) if `traverse_string`'
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assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', slice(0, None, 2)), traverse_string=True) == 'sr', \
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'`slice` should result in string if `traverse_string`'
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assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda i, v: i or v == "s"), traverse_string=True) == 'str', \
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'function should result in string if `traverse_string`'
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assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', (0, 2)), traverse_string=True) == ['s', 'r'], \
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'branching should result in list if `traverse_string`'
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assert traverse_obj({}, (0, ...), traverse_string=True) == [], \
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'branching should result in list if `traverse_string`'
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assert traverse_obj({}, (0, lambda x, y: True), traverse_string=True) == [], \
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'branching should result in list if `traverse_string`'
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assert traverse_obj({}, (0, slice(1)), traverse_string=True) == [], \
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'branching should result in list if `traverse_string`'
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def test_traversal_re(self):
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mobj = re.fullmatch(r'0(12)(?P<group>3)(4)?', '0123')
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assert traverse_obj(mobj, ...) == [x for x in mobj.groups() if x is not None], \
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'`...` on a `re.Match` should give its `groups()`'
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assert traverse_obj(mobj, lambda k, _: k in (0, 2)) == ['0123', '3'], \
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'function on a `re.Match` should give groupno, value starting at 0'
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assert traverse_obj(mobj, 'group') == '3', \
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'str key on a `re.Match` should give group with that name'
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assert traverse_obj(mobj, 2) == '3', \
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'int key on a `re.Match` should give group with that name'
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assert traverse_obj(mobj, 'gRoUp', casesense=False) == '3', \
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'str key on a `re.Match` should respect casesense'
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assert traverse_obj(mobj, 'fail') is None, \
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'failing str key on a `re.Match` should return `default`'
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assert traverse_obj(mobj, 'gRoUpS', casesense=False) is None, \
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'failing str key on a `re.Match` should return `default`'
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assert traverse_obj(mobj, 8) is None, \
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'failing int key on a `re.Match` should return `default`'
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assert traverse_obj(mobj, lambda k, _: k in (0, 'group')) == ['0123', '3'], \
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'function on a `re.Match` should give group name as well'
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def test_traversal_xml_etree(self):
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etree = xml.etree.ElementTree.fromstring('''<?xml version="1.0"?>
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<data>
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<country name="Liechtenstein">
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<rank>1</rank>
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<year>2008</year>
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<gdppc>141100</gdppc>
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<neighbor name="Austria" direction="E"/>
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<neighbor name="Switzerland" direction="W"/>
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</country>
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<country name="Singapore">
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<rank>4</rank>
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<year>2011</year>
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<gdppc>59900</gdppc>
|
||||
<neighbor name="Malaysia" direction="N"/>
|
||||
</country>
|
||||
<country name="Panama">
|
||||
<rank>68</rank>
|
||||
<year>2011</year>
|
||||
<gdppc>13600</gdppc>
|
||||
<neighbor name="Costa Rica" direction="W"/>
|
||||
<neighbor name="Colombia" direction="E"/>
|
||||
</country>
|
||||
</data>''')
|
||||
assert traverse_obj(etree, '') == etree, \
|
||||
'empty str key should return the element itself'
|
||||
assert traverse_obj(etree, 'country') == list(etree), \
|
||||
'str key should lead all children with that tag name'
|
||||
assert traverse_obj(etree, ...) == list(etree), \
|
||||
'`...` as key should return all children'
|
||||
assert traverse_obj(etree, lambda _, x: x[0].text == '4') == [etree[1]], \
|
||||
'function as key should get element as value'
|
||||
assert traverse_obj(etree, lambda i, _: i == 1) == [etree[1]], \
|
||||
'function as key should get index as key'
|
||||
assert traverse_obj(etree, 0) == etree[0], \
|
||||
'int key should return the nth child'
|
||||
expected = ['Austria', 'Switzerland', 'Malaysia', 'Costa Rica', 'Colombia']
|
||||
assert traverse_obj(etree, './/neighbor/@name') == expected, \
|
||||
'`@<attribute>` at end of path should give that attribute'
|
||||
assert traverse_obj(etree, '//neighbor/@fail') == [None, None, None, None, None], \
|
||||
'`@<nonexistant>` at end of path should give `None`'
|
||||
assert traverse_obj(etree, ('//neighbor/@', 2)) == {'name': 'Malaysia', 'direction': 'N'}, \
|
||||
'`@` should give the full attribute dict'
|
||||
assert traverse_obj(etree, '//year/text()') == ['2008', '2011', '2011'], \
|
||||
'`text()` at end of path should give the inner text'
|
||||
assert traverse_obj(etree, '//*[@direction]/@direction') == ['E', 'W', 'N', 'W', 'E'], \
|
||||
'full Python xpath features should be supported'
|
||||
assert traverse_obj(etree, (0, '@name')) == 'Liechtenstein', \
|
||||
'special transformations should act on current element'
|
||||
assert traverse_obj(etree, ('country', 0, ..., 'text()', {int_or_none})) == [1, 2008, 141100], \
|
||||
'special transformations should act on current element'
|
||||
|
|
@ -2,7 +2,6 @@
|
|||
|
||||
# Allow direct execution
|
||||
import os
|
||||
import re
|
||||
import sys
|
||||
import unittest
|
||||
import warnings
|
||||
|
|
@ -45,7 +44,6 @@ from yt_dlp.utils import (
|
|||
determine_ext,
|
||||
determine_file_encoding,
|
||||
dfxp2srt,
|
||||
dict_get,
|
||||
encode_base_n,
|
||||
encode_compat_str,
|
||||
encodeFilename,
|
||||
|
|
@ -106,13 +104,11 @@ from yt_dlp.utils import (
|
|||
sanitize_url,
|
||||
shell_quote,
|
||||
smuggle_url,
|
||||
str_or_none,
|
||||
str_to_int,
|
||||
strip_jsonp,
|
||||
strip_or_none,
|
||||
subtitles_filename,
|
||||
timeconvert,
|
||||
traverse_obj,
|
||||
try_call,
|
||||
unescapeHTML,
|
||||
unified_strdate,
|
||||
|
|
@ -755,28 +751,6 @@ class TestUtil(unittest.TestCase):
|
|||
self.assertRaises(
|
||||
ValueError, multipart_encode, {b'field': b'value'}, boundary='value')
|
||||
|
||||
def test_dict_get(self):
|
||||
FALSE_VALUES = {
|
||||
'none': None,
|
||||
'false': False,
|
||||
'zero': 0,
|
||||
'empty_string': '',
|
||||
'empty_list': [],
|
||||
}
|
||||
d = FALSE_VALUES.copy()
|
||||
d['a'] = 42
|
||||
self.assertEqual(dict_get(d, 'a'), 42)
|
||||
self.assertEqual(dict_get(d, 'b'), None)
|
||||
self.assertEqual(dict_get(d, 'b', 42), 42)
|
||||
self.assertEqual(dict_get(d, ('a', )), 42)
|
||||
self.assertEqual(dict_get(d, ('b', 'a', )), 42)
|
||||
self.assertEqual(dict_get(d, ('b', 'c', 'a', 'd', )), 42)
|
||||
self.assertEqual(dict_get(d, ('b', 'c', )), None)
|
||||
self.assertEqual(dict_get(d, ('b', 'c', ), 42), 42)
|
||||
for key, false_value in FALSE_VALUES.items():
|
||||
self.assertEqual(dict_get(d, ('b', 'c', key, )), None)
|
||||
self.assertEqual(dict_get(d, ('b', 'c', key, ), skip_false_values=False), false_value)
|
||||
|
||||
def test_merge_dicts(self):
|
||||
self.assertEqual(merge_dicts({'a': 1}, {'b': 2}), {'a': 1, 'b': 2})
|
||||
self.assertEqual(merge_dicts({'a': 1}, {'a': 2}), {'a': 1})
|
||||
|
|
@ -2039,359 +2013,6 @@ Line 1
|
|||
warnings.simplefilter('ignore')
|
||||
self.assertEqual(variadic('spam', allowed_types=[dict]), 'spam')
|
||||
|
||||
def test_traverse_obj(self):
|
||||
_TEST_DATA = {
|
||||
100: 100,
|
||||
1.2: 1.2,
|
||||
'str': 'str',
|
||||
'None': None,
|
||||
'...': ...,
|
||||
'urls': [
|
||||
{'index': 0, 'url': 'https://www.example.com/0'},
|
||||
{'index': 1, 'url': 'https://www.example.com/1'},
|
||||
],
|
||||
'data': (
|
||||
{'index': 2},
|
||||
{'index': 3},
|
||||
),
|
||||
'dict': {},
|
||||
}
|
||||
|
||||
# Test base functionality
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ('str',)), 'str',
|
||||
msg='allow tuple path')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ['str']), 'str',
|
||||
msg='allow list path')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, (value for value in ("str",))), 'str',
|
||||
msg='allow iterable path')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, 'str'), 'str',
|
||||
msg='single items should be treated as a path')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, None), _TEST_DATA)
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, 100), 100)
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, 1.2), 1.2)
|
||||
|
||||
# Test Ellipsis behavior
|
||||
self.assertCountEqual(traverse_obj(_TEST_DATA, ...),
|
||||
(item for item in _TEST_DATA.values() if item not in (None, {})),
|
||||
msg='`...` should give all non discarded values')
|
||||
self.assertCountEqual(traverse_obj(_TEST_DATA, ('urls', 0, ...)), _TEST_DATA['urls'][0].values(),
|
||||
msg='`...` selection for dicts should select all values')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, (..., ..., 'url')),
|
||||
['https://www.example.com/0', 'https://www.example.com/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(iter(range(4)), ...), list(range(4)),
|
||||
msg='`...` should accept iterables')
|
||||
|
||||
# Test function as key
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, lambda x, y: x == 'urls' and isinstance(y, list)),
|
||||
[_TEST_DATA['urls']],
|
||||
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(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'):
|
||||
traverse_obj(_TEST_DATA, lambda a: ...)
|
||||
with self.assertRaises(Exception, msg='Wrong function signature should raise in debug'):
|
||||
traverse_obj(_TEST_DATA, lambda a, b, c: ...)
|
||||
|
||||
# Test set as key (transformation/type, like `expected_type`)
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, (..., {str.upper}, )), ['STR'],
|
||||
msg='Function in set should be a transformation')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, (..., {str})), ['str'],
|
||||
msg='Type in set should be a type filter')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {dict}), _TEST_DATA,
|
||||
msg='A single set should be wrapped into a path')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, (..., {str.upper})), ['STR'],
|
||||
msg='Transformation function should not raise')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, (..., {str_or_none})),
|
||||
[item for item in map(str_or_none, _TEST_DATA.values()) if item is not None],
|
||||
msg='Function in set should be a transformation')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ('fail', {lambda _: 'const'})), 'const',
|
||||
msg='Function in set should always be called')
|
||||
if __debug__:
|
||||
with self.assertRaises(Exception, msg='Sets with length != 1 should raise in debug'):
|
||||
traverse_obj(_TEST_DATA, set())
|
||||
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')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, 'str', 100), 'str',
|
||||
msg='alternatives should exit early')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, 'fail', 'fail'), None,
|
||||
msg='alternatives should return `default` if exhausted')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, (..., 'fail'), 100), 100,
|
||||
msg='alternatives should track their own branching return')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ('dict', ...), ('data', ...)), list(_TEST_DATA['data']),
|
||||
msg='alternatives on empty objects should search further')
|
||||
|
||||
# Test branch and path nesting
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ('urls', (3, 0), 'url')), ['https://www.example.com/0'],
|
||||
msg='tuple as key should be treated as branches')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ('urls', [3, 0], 'url')), ['https://www.example.com/0'],
|
||||
msg='list as key should be treated as branches')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ('urls', ((1, 'fail'), (0, 'url')))), ['https://www.example.com/0'],
|
||||
msg='double nesting in path should be treated as paths')
|
||||
self.assertEqual(traverse_obj(['0', [1, 2]], [(0, 1), 0]), [1],
|
||||
msg='do not fail early on branching')
|
||||
self.assertCountEqual(traverse_obj(_TEST_DATA, ('urls', ((1, ('fail', 'url')), (0, 'url')))),
|
||||
['https://www.example.com/0', 'https://www.example.com/1'],
|
||||
msg='tripple nesting in path should be treated as branches')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ('urls', ('fail', (..., 'url')))),
|
||||
['https://www.example.com/0', 'https://www.example.com/1'],
|
||||
msg='ellipsis as branch path start gets flattened')
|
||||
|
||||
# Test dictionary as key
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: 100, 1: 1.2}), {0: 100, 1: 1.2},
|
||||
msg='dict key should result in a dict with the same keys')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: ('urls', 0, 'url')}),
|
||||
{0: 'https://www.example.com/0'},
|
||||
msg='dict key should allow paths')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: ('urls', (3, 0), 'url')}),
|
||||
{0: ['https://www.example.com/0']},
|
||||
msg='tuple in dict path should be treated as branches')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: ('urls', ((1, 'fail'), (0, 'url')))}),
|
||||
{0: ['https://www.example.com/0']},
|
||||
msg='double nesting in dict path should be treated as paths')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: ('urls', ((1, ('fail', 'url')), (0, 'url')))}),
|
||||
{0: ['https://www.example.com/1', 'https://www.example.com/0']},
|
||||
msg='tripple nesting in dict path should be treated as branches')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: 'fail'}), {},
|
||||
msg='remove `None` values when top level dict key fails')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: 'fail'}, default=...), {0: ...},
|
||||
msg='use `default` if key fails and `default`')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: 'dict'}), {},
|
||||
msg='remove empty values when dict key')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: 'dict'}, default=...), {0: ...},
|
||||
msg='use `default` when dict key and `default`')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: {0: 'fail'}}), {},
|
||||
msg='remove empty values when nested dict key fails')
|
||||
self.assertEqual(traverse_obj(None, {0: 'fail'}), {},
|
||||
msg='default to dict if pruned')
|
||||
self.assertEqual(traverse_obj(None, {0: 'fail'}, default=...), {0: ...},
|
||||
msg='default to dict if pruned and default is given')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: {0: 'fail'}}, default=...), {0: {0: ...}},
|
||||
msg='use nested `default` when nested dict key fails and `default`')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: ('dict', ...)}), {},
|
||||
msg='remove key if branch in dict key not successful')
|
||||
|
||||
# Testing default parameter behavior
|
||||
_DEFAULT_DATA = {'None': None, 'int': 0, 'list': []}
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, 'fail'), None,
|
||||
msg='default value should be `None`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, 'fail', 'fail', default=...), ...,
|
||||
msg='chained fails should result in default')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, 'None', 'int'), 0,
|
||||
msg='should not short cirquit on `None`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, 'fail', default=1), 1,
|
||||
msg='invalid dict key should result in `default`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, 'None', default=1), 1,
|
||||
msg='`None` is a deliberate sentinel and should become `default`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, ('list', 10)), None,
|
||||
msg='`IndexError` should result in `default`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, (..., 'fail'), default=1), 1,
|
||||
msg='if branched but not successful return `default` if defined, not `[]`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, (..., 'fail'), default=None), None,
|
||||
msg='if branched but not successful return `default` even if `default` is `None`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, (..., 'fail')), [],
|
||||
msg='if branched but not successful return `[]`, not `default`')
|
||||
self.assertEqual(traverse_obj(_DEFAULT_DATA, ('list', ...)), [],
|
||||
msg='if branched but object is empty return `[]`, not `default`')
|
||||
self.assertEqual(traverse_obj(None, ...), [],
|
||||
msg='if branched but object is `None` return `[]`, not `default`')
|
||||
self.assertEqual(traverse_obj({0: None}, (0, ...)), [],
|
||||
msg='if branched but state is `None` return `[]`, not `default`')
|
||||
|
||||
branching_paths = [
|
||||
('fail', ...),
|
||||
(..., 'fail'),
|
||||
100 * ('fail',) + (...,),
|
||||
(...,) + 100 * ('fail',),
|
||||
]
|
||||
for branching_path in branching_paths:
|
||||
self.assertEqual(traverse_obj({}, branching_path), [],
|
||||
msg='if branched but state is `None`, return `[]` (not `default`)')
|
||||
self.assertEqual(traverse_obj({}, 'fail', branching_path), [],
|
||||
msg='if branching in last alternative and previous did not match, return `[]` (not `default`)')
|
||||
self.assertEqual(traverse_obj({0: 'x'}, 0, branching_path), 'x',
|
||||
msg='if branching in last alternative and previous did match, return single value')
|
||||
self.assertEqual(traverse_obj({0: 'x'}, branching_path, 0), 'x',
|
||||
msg='if branching in first alternative and non-branching path does match, return single value')
|
||||
self.assertEqual(traverse_obj({}, branching_path, 'fail'), None,
|
||||
msg='if branching in first alternative and non-branching path does not match, return `default`')
|
||||
|
||||
# Testing expected_type behavior
|
||||
_EXPECTED_TYPE_DATA = {'str': 'str', 'int': 0}
|
||||
self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=str),
|
||||
'str', msg='accept matching `expected_type` type')
|
||||
self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=int),
|
||||
None, msg='reject non matching `expected_type` type')
|
||||
self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'int', expected_type=lambda x: str(x)),
|
||||
'0', msg='transform type using type function')
|
||||
self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, 'str', expected_type=lambda _: 1 / 0),
|
||||
None, msg='wrap expected_type fuction in try_call')
|
||||
self.assertEqual(traverse_obj(_EXPECTED_TYPE_DATA, ..., expected_type=str),
|
||||
['str'], msg='eliminate items that expected_type fails on')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: 100, 1: 1.2}, expected_type=int),
|
||||
{0: 100}, msg='type as expected_type should filter dict values')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: 100, 1: 1.2, 2: 'None'}, expected_type=str_or_none),
|
||||
{0: '100', 1: '1.2'}, msg='function as expected_type should transform dict values')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ({0: 1.2}, 0, {int_or_none}), expected_type=int),
|
||||
1, msg='expected_type should not filter non final dict values')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, {0: {0: 100, 1: 'str'}}, expected_type=int),
|
||||
{0: {0: 100}}, msg='expected_type should transform deep dict values')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, [({0: '...'}, {0: '...'})], expected_type=type(...)),
|
||||
[{0: ...}, {0: ...}], msg='expected_type should transform branched dict values')
|
||||
self.assertEqual(traverse_obj({1: {3: 4}}, [(1, 2), 3], expected_type=int),
|
||||
[4], msg='expected_type regression for type matching in tuple branching')
|
||||
self.assertEqual(traverse_obj(_TEST_DATA, ['data', ...], expected_type=int),
|
||||
[], msg='expected_type regression for type matching in dict result')
|
||||
|
||||
# Test get_all behavior
|
||||
_GET_ALL_DATA = {'key': [0, 1, 2]}
|
||||
self.assertEqual(traverse_obj(_GET_ALL_DATA, ('key', ...), get_all=False), 0,
|
||||
msg='if not `get_all`, return only first matching value')
|
||||
self.assertEqual(traverse_obj(_GET_ALL_DATA, ..., get_all=False), [0, 1, 2],
|
||||
msg='do not overflatten if not `get_all`')
|
||||
|
||||
# Test casesense behavior
|
||||
_CASESENSE_DATA = {
|
||||
'KeY': 'value0',
|
||||
0: {
|
||||
'KeY': 'value1',
|
||||
0: {'KeY': 'value2'},
|
||||
},
|
||||
}
|
||||
self.assertEqual(traverse_obj(_CASESENSE_DATA, 'key'), None,
|
||||
msg='dict keys should be case sensitive unless `casesense`')
|
||||
self.assertEqual(traverse_obj(_CASESENSE_DATA, 'keY',
|
||||
casesense=False), 'value0',
|
||||
msg='allow non matching key case if `casesense`')
|
||||
self.assertEqual(traverse_obj(_CASESENSE_DATA, (0, ('keY',)),
|
||||
casesense=False), ['value1'],
|
||||
msg='allow non matching key case in branch if `casesense`')
|
||||
self.assertEqual(traverse_obj(_CASESENSE_DATA, (0, ((0, 'keY'),)),
|
||||
casesense=False), ['value2'],
|
||||
msg='allow non matching key case in branch path if `casesense`')
|
||||
|
||||
# Test traverse_string behavior
|
||||
_TRAVERSE_STRING_DATA = {'str': 'str', 1.2: 1.2}
|
||||
self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', 0)), None,
|
||||
msg='do not traverse into string if not `traverse_string`')
|
||||
self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', 0),
|
||||
traverse_string=True), 's',
|
||||
msg='traverse into string if `traverse_string`')
|
||||
self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, (1.2, 1),
|
||||
traverse_string=True), '.',
|
||||
msg='traverse into converted data if `traverse_string`')
|
||||
self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', ...),
|
||||
traverse_string=True), 'str',
|
||||
msg='`...` should result in string (same value) if `traverse_string`')
|
||||
self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', slice(0, None, 2)),
|
||||
traverse_string=True), 'sr',
|
||||
msg='`slice` should result in string if `traverse_string`')
|
||||
self.assertEqual(traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda i, v: i or v == "s"),
|
||||
traverse_string=True), 'str',
|
||||
msg='function should result in string if `traverse_string`')
|
||||
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 re.Match as input obj
|
||||
mobj = re.fullmatch(r'0(12)(?P<group>3)(4)?', '0123')
|
||||
self.assertEqual(traverse_obj(mobj, ...), [x for x in mobj.groups() if x is not None],
|
||||
msg='`...` on a `re.Match` should give its `groups()`')
|
||||
self.assertEqual(traverse_obj(mobj, lambda k, _: k in (0, 2)), ['0123', '3'],
|
||||
msg='function on a `re.Match` should give groupno, value starting at 0')
|
||||
self.assertEqual(traverse_obj(mobj, 'group'), '3',
|
||||
msg='str key on a `re.Match` should give group with that name')
|
||||
self.assertEqual(traverse_obj(mobj, 2), '3',
|
||||
msg='int key on a `re.Match` should give group with that name')
|
||||
self.assertEqual(traverse_obj(mobj, 'gRoUp', casesense=False), '3',
|
||||
msg='str key on a `re.Match` should respect casesense')
|
||||
self.assertEqual(traverse_obj(mobj, 'fail'), None,
|
||||
msg='failing str key on a `re.Match` should return `default`')
|
||||
self.assertEqual(traverse_obj(mobj, 'gRoUpS', casesense=False), None,
|
||||
msg='failing str key on a `re.Match` should return `default`')
|
||||
self.assertEqual(traverse_obj(mobj, 8), None,
|
||||
msg='failing int key on a `re.Match` should return `default`')
|
||||
self.assertEqual(traverse_obj(mobj, lambda k, _: k in (0, 'group')), ['0123', '3'],
|
||||
msg='function on a `re.Match` should give group name as well')
|
||||
|
||||
# Test xml.etree.ElementTree.Element as input obj
|
||||
etree = xml.etree.ElementTree.fromstring('''<?xml version="1.0"?>
|
||||
<data>
|
||||
<country name="Liechtenstein">
|
||||
<rank>1</rank>
|
||||
<year>2008</year>
|
||||
<gdppc>141100</gdppc>
|
||||
<neighbor name="Austria" direction="E"/>
|
||||
<neighbor name="Switzerland" direction="W"/>
|
||||
</country>
|
||||
<country name="Singapore">
|
||||
<rank>4</rank>
|
||||
<year>2011</year>
|
||||
<gdppc>59900</gdppc>
|
||||
<neighbor name="Malaysia" direction="N"/>
|
||||
</country>
|
||||
<country name="Panama">
|
||||
<rank>68</rank>
|
||||
<year>2011</year>
|
||||
<gdppc>13600</gdppc>
|
||||
<neighbor name="Costa Rica" direction="W"/>
|
||||
<neighbor name="Colombia" direction="E"/>
|
||||
</country>
|
||||
</data>''')
|
||||
self.assertEqual(traverse_obj(etree, ''), etree,
|
||||
msg='empty str key should return the element itself')
|
||||
self.assertEqual(traverse_obj(etree, 'country'), list(etree),
|
||||
msg='str key should lead all children with that tag name')
|
||||
self.assertEqual(traverse_obj(etree, ...), list(etree),
|
||||
msg='`...` as key should return all children')
|
||||
self.assertEqual(traverse_obj(etree, lambda _, x: x[0].text == '4'), [etree[1]],
|
||||
msg='function as key should get element as value')
|
||||
self.assertEqual(traverse_obj(etree, lambda i, _: i == 1), [etree[1]],
|
||||
msg='function as key should get index as key')
|
||||
self.assertEqual(traverse_obj(etree, 0), etree[0],
|
||||
msg='int key should return the nth child')
|
||||
self.assertEqual(traverse_obj(etree, './/neighbor/@name'),
|
||||
['Austria', 'Switzerland', 'Malaysia', 'Costa Rica', 'Colombia'],
|
||||
msg='`@<attribute>` at end of path should give that attribute')
|
||||
self.assertEqual(traverse_obj(etree, '//neighbor/@fail'), [None, None, None, None, None],
|
||||
msg='`@<nonexistant>` at end of path should give `None`')
|
||||
self.assertEqual(traverse_obj(etree, ('//neighbor/@', 2)), {'name': 'Malaysia', 'direction': 'N'},
|
||||
msg='`@` should give the full attribute dict')
|
||||
self.assertEqual(traverse_obj(etree, '//year/text()'), ['2008', '2011', '2011'],
|
||||
msg='`text()` at end of path should give the inner text')
|
||||
self.assertEqual(traverse_obj(etree, '//*[@direction]/@direction'), ['E', 'W', 'N', 'W', 'E'],
|
||||
msg='full Python xpath features should be supported')
|
||||
self.assertEqual(traverse_obj(etree, (0, '@name')), 'Liechtenstein',
|
||||
msg='special transformations should act on current element')
|
||||
self.assertEqual(traverse_obj(etree, ('country', 0, ..., 'text()', {int_or_none})), [1, 2008, 141100],
|
||||
msg='special transformations should act on current element')
|
||||
|
||||
def test_http_header_dict(self):
|
||||
headers = HTTPHeaderDict()
|
||||
headers['ytdl-test'] = b'0'
|
||||
|
|
|
|||
Loading…
Reference in New Issue