How to use _check_iterable method in assertpy

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...11 'uri', 'name', 'genre', 'date', 'comment', 'musicbrainz_id'}12DISTINCT_FIELDS = {13 'track', 'artist', 'albumartist', 'album', 'composer', 'performer', 'date',14 'genre'}15# TODO: _check_iterable(check, msg, **kwargs) + [check(a) for a in arg]?16def _check_iterable(arg, msg, **kwargs):17 """Ensure we have an iterable which is not a string or an iterator"""18 if isinstance(arg, compat.string_types):19 raise exceptions.ValidationError(msg.format(arg=arg, **kwargs))20 elif not isinstance(arg, collections.Iterable):21 raise exceptions.ValidationError(msg.format(arg=arg, **kwargs))22 elif iter(arg) is iter(arg):23 raise exceptions.ValidationError(msg.format(arg=arg, **kwargs))24def check_choice(arg, choices, msg='Expected one of {choices}, not {arg!r}'):25 if arg not in choices:26 raise exceptions.ValidationError(msg.format(27 arg=arg, choices=tuple(choices)))28def check_boolean(arg, msg='Expected a boolean, not {arg!r}'):29 check_instance(arg, bool, msg=msg)30def check_instance(arg, cls, msg='Expected a {name} instance, not {arg!r}'):31 if not isinstance(arg, cls):32 raise exceptions.ValidationError(33 msg.format(arg=arg, name=cls.__name__))34def check_instances(arg, cls, msg='Expected a list of {name}, not {arg!r}'):35 _check_iterable(arg, msg, name=cls.__name__)36 if not all(isinstance(instance, cls) for instance in arg):37 raise exceptions.ValidationError(38 msg.format(arg=arg, name=cls.__name__))39def check_integer(arg, min=None, max=None):40 if not isinstance(arg, compat.integer_types):41 raise exceptions.ValidationError('Expected an integer, not %r' % arg)42 elif min is not None and arg < min:43 raise exceptions.ValidationError(44 'Expected number larger or equal to %d, not %r' % (min, arg))45 elif max is not None and arg > max:46 raise exceptions.ValidationError(47 'Expected number smaller or equal to %d, not %r' % (max, arg))48def check_query(arg, fields=SEARCH_FIELDS, list_values=True):49 # TODO: normalize name -> track_name50 # TODO: normalize value -> [value]51 # TODO: normalize blank -> [] or just remove field?52 # TODO: remove list_values?53 if not isinstance(arg, collections.Mapping):54 raise exceptions.ValidationError(55 'Expected a query dictionary, not {arg!r}'.format(arg=arg))56 for key, value in arg.items():57 check_choice(key, fields, msg='Expected query field to be one of '58 '{choices}, not {arg!r}')59 if list_values:60 msg = 'Expected "{key}" to be list of strings, not {arg!r}'61 _check_iterable(value, msg, key=key)62 [_check_query_value(key, v, msg) for v in value]63 else:64 _check_query_value(65 key, value, 'Expected "{key}" to be a string, not {arg!r}')66def _check_query_value(key, arg, msg):67 if not isinstance(arg, compat.string_types) or not arg.strip():68 raise exceptions.ValidationError(msg.format(arg=arg, key=key))69def check_uri(arg, msg='Expected a valid URI, not {arg!r}'):70 if not isinstance(arg, compat.string_types):71 raise exceptions.ValidationError(msg.format(arg=arg))72 elif urllib.parse.urlparse(arg).scheme == '':73 raise exceptions.ValidationError(msg.format(arg=arg))74def check_uris(arg, msg='Expected a list of URIs, not {arg!r}'):75 _check_iterable(arg, msg)...

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...43 return self._s[idx]44def test_custom_list():45 l = CustomList('foobar')46 assert_that([CustomList('foo'), CustomList('bar')]).extracting(0,-1).is_equal_to([('f','o'),('b','r')])47def test_check_iterable():48 l = CustomList('foobar')49 ab = assert_that(None)50 ab._check_iterable(l)51 ab._check_iterable(l, check_getitem=True)52 ab._check_iterable(l, check_getitem=False)53def test_check_iterable_not_iterable():54 try:55 ab = assert_that(None)56 ab._check_iterable(123, name='my-int')57 fail('should have raised error')58 except TypeError as e:59 assert_that(str(e)).contains('my-int <int> is not iterable')60def test_check_iterable_no_getitem():61 try:62 ab = assert_that(None)63 ab._check_iterable(set([1]), name='my-set')64 fail('should have raised error')65 except TypeError as e:...

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