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How to use _dict_subtract method in Testify

Best Python code snippet using Testify_python

core.py

Source:core.py

...166    def _subtract_features(self, user_id, features):167        try:168            self.users_history[user_id]['count'] -= 1169            for feature, value in features.items():170                self._dict_subtract(self.users_history[user_id],171                                    feature, value)172                if len(self.users_history[user_id]) == 1:173                    del self.users_history[user_id]174                self._dict_subtract(self.total_history,175                                    feature, value)176        except KeyError:177            raise AssertionError('Inconsistancy in history.')178        try:179            if self.users_history[user_id]['count'] <= 0:180                raise AssertionError('Inconsistancy in history.')181        except KeyError:182            pass183    def _dict_subtract(self, dictionary, feature, value):184        try:185            dictionary[feature][value] -= 1186            if dictionary[feature][value] == 0:187                del dictionary[feature][value]188            if len(dictionary[feature]) == 0:189                del dictionary[feature]190        except KeyError:191            raise AssertionError('Inconsistancy in dictionary.')192    def _filter_features(self, features):193        filtered_values = {}194        for key in CONF.rba.features:195            filtered_values[key] = features.get(196                key, '')197        return filtered_values...

assertions.py

Source:assertions.py

...33        val_diff = list_subtractor(val1, val2)34    else:35        val_diff = val136    return val_diff37def _dict_subtract(dict1, dict2):38    """39    Return key,value pairs from dict1 that are not in dict240    Returns:41    A new dict 'res_dict' with the following properties:42    For all (key, val) pairs where key appears in dict2:43    if dict1[val] == dict2[val] then res_dict[val] is not defined44    else res_dict[val] == dict1[val]45    If vals are themselves dictionaries the algorim is applied recursively.46    Example:47        _dict_subtract({48                       1: 'one',49                       2: 'two',50                       3: {'a': 'A', 'b': 'B'},51                       4: {'c': 'C', 'd': 'D'}52                      },53                      {54                       2: 'two',55                       3: {'a': 'A', 'b': 'B'},56                       4: {'d': 'D'},57                       5: {'e': 'E'}58                      }) => {1: 'one', 4: {'c': 'C'}}59    """60    # make a result we can edit61    result = dict(dict1)62    # find the common keys -- i.e., the ones we might need to subtract63    common_keys = set(dict1.keys()) & set(dict2.keys())64    for key in common_keys:65        val1, val2 = dict1[key], dict2[key]66        if val1 == val2:67            # values are the same: subtract68            del result[key]69        else:70            # values are different: set the output key to the different between the values71            result[key] = _val_subtract(val1, val2, _dict_subtract, _list_subtract)72    return result73def _list_subtract(list1, list2):74    """75    Returns the difference between list1 and list2.76    _list_subtract([1,2,3], [3,2,1]) == [1,3]77    If any items in the list are container types, the method recursively calls78    itself or _dict_subtract() to subtract the child79    containers.80    """81    # call val_subtract on all items that are not the same82    res_list = [_val_subtract(val1, val2, _dict_subtract, _list_subtract)83                for val1, val2 in zip(list1, list2) if val1 != val2]84    # now append items that come after any item in list185    res_list += list1[len(list2):]86    # return a tuple of list1 is a tuple87    if isinstance(list1, tuple):88        return tuple(res_list)89    else:90        return res_list91def assert_raises(*args, **kwargs):92    """Assert an exception is raised as a context manager or by passing in a93    callable and its arguments.94    As a context manager:95    >>> with assert_raises(Exception):96    ...     raise Exception97    Pass in a callable:98    >>> def raise_exception(arg, kwarg=None):99    ...     raise Exception100    >>> assert_raises(Exception, raise_exception, 1, kwarg=234)101    """102    if (len(args) == 1) and not kwargs:103        return _assert_raises_context_manager(args[0])104    else:105        return _assert_raises(*args, **kwargs)106def assert_raises_and_contains(expected_exception_class, strings, callable_obj, *args, **kwargs):107    """Assert an exception is raised by passing in a callable and its108    arguments and that the string representation of the exception109    contains the case-insensetive list of passed in strings.110    Args111        strings -- can be a string or an iterable of strings112    """113    try:114        callable_obj(*args, **kwargs)115    except:116        _, e, _ = sys.exc_info()117        assert_isinstance(e, expected_exception_class)118        message = str(e).lower()119        if isinstance(strings, STRING_TYPE):120            strings = [strings]121        for string in strings:122            assert_in(string.lower(), message)123    else:124        assert_not_reached("No exception was raised (expected %s)" % expected_exception_class)125@contextlib.contextmanager126def _assert_raises_context_manager(exception_class):127    try:128        yield129    except:130        _, ex, _ = sys.exc_info()131        assert_isinstance(ex, exception_class)132    else:133        assert_not_reached("No exception was raised (expected %r)" %134                           exception_class)135def _assert_raises(exception_class, callable, *args, **kwargs):136    with _assert_raises_context_manager(exception_class):137        callable(*args, **kwargs)138def _diff_message(lhs, rhs):139    """If `lhs` and `rhs` are strings, return the a formatted message140    describing their differences. If they're not strings, describe the141    differences in their `repr()`s.142    NOTE: Only works well for strings not containing newlines.143    """144    lhs = repr(lhs) if not isinstance(lhs, STRING_TYPE) else lhs145    rhs = repr(rhs) if not isinstance(rhs, STRING_TYPE) else rhs146    return 'Diff:\nl: %s\nr: %s' % utils.highlight(lhs, rhs)147def assert_equal(lval, rval, message=None):148    """Assert that lval and rval are equal."""149    if message:150        assert lval == rval, message151    else:152        assert lval == rval, \153            "assertion failed: l == r\nl: %r\nr: %r\n\n%s" % \154                (lval, rval, _diff_message(lval, rval))155assert_equals = assert_equal156def assert_almost_equal(lval, rval, digits, message=None):157    """Assert that lval and rval, when rounded to the specified number of digits, are the same."""158    real_message = message or "%r !~= %r" % (lval, rval)159    assert round(lval, digits) == round(rval, digits), real_message160def assert_within_tolerance(lval, rval, tolerance, message=None):161    """Assert that the difference between the two values, as a fraction of the left value, is smaller than the tolerance specified.162    That is, abs(float(lval) - float(rval)) / float(lval) < tolerance"""163    real_message = message or "%r !~= %r" % (lval, rval)164    assert abs(float(lval) - float(rval)) / float(lval) < tolerance, real_message165def assert_not_equal(lval, rval, message=None):166    """Assert that lval and rval are unequal to each other."""167    assert lval != rval, message or 'assertion failed: %r != %r' % (lval, rval)168def assert_lt(lval, rval, message=None):169    """Assert that lval is less than rval."""170    assert lval < rval, message or 'assertion failed: %r < %r' % (lval, rval)171def assert_lte(lval, rval, message=None):172    """Assert that lval is less than or equal to rval"""173    assert lval <= rval, message or 'assertion failed: %r <= %r' % (lval, rval)174def assert_gt(lval, rval, message=None):175    """Assert that lval is greater than rval."""176    assert lval > rval, message or 'assertion failed: %r > %r' % (lval, rval)177def assert_gte(lval, rval, message=None):178    """Assert that lval is greater than or equal to rval"""179    assert lval >= rval, message or 'assertion failed: %r >= %r' % (lval, rval)180def assert_in_range(val, start, end, message=None, inclusive=False):181    """Assert that val is greater than start and less than end. If inclusive is true, val may be equal to start or end."""182    if inclusive:183        real_message = message or "! %s <= %r <= %r" % (start, val, end)184        assert start <= val <= end, real_message185    else:186        real_message = message or "! %s < %r < %r" % (start, val, end)187        assert start < val < end, real_message188def assert_between(a, b, c):189    """Assert that b is between a and c, inclusive."""190    assert_in_range(b, a, c, inclusive=True)191def assert_in(item, sequence, message=None):192    """Assert that the item is in the sequence."""193    if not message:194        message = (195            "assertion failed: expected %(item)r in %(sequence)r" % locals()196        )197    assert item in sequence, message198def assert_not_in(item, sequence, message=None):199    """Assert that the item is not in the sequence."""200    assert item not in sequence, (201        "assertion failed: expected %(item)r not in %(sequence)r" % locals()202    )203def assert_all_in(left, right):204    """Assert that everything in `left` is also in `right`205    Note: This is different than `assert_subset()` because python sets use206    `__hash__()` for comparision whereas `in` uses `__eq__()`.207    """208    unmatching = []209    for item in left:210        if item not in right:211            unmatching.append(item)212    if unmatching:213        raise AssertionError(214            "%(unmatching)r missing from %(right)r" % locals()215        )216def assert_starts_with(val, prefix, message=None):217    """Assert that val starts with prefix.218    Applies to any iterable, not just strings.219    """220    try:221        iter(val)222    except:223        raise TypeError("%(val)r is not iterable" % locals())224    try:225        iter(prefix)226    except:227        raise TypeError("%(prefix)r is not iterable" % locals())228    msg = message or "%(val)r does not start with %(prefix)r" % locals()229    for i, (l, r) in enumerate(zip(val, prefix)):230        assert_equal(l, r, msg)231    msg = (232        message or233        "%(val)r shorter than %(prefix)r, so can't start with it" % locals()234    )235    length = len(list(prefix))236    assert_equal(length, i + 1, msg)237def assert_not_reached(message=None):238    """Raise an AssertionError with a message."""239    if message:240        assert False, message241    else:242        assert False, 'egads! this line ought not to have been reached'243def assert_rows_equal(rows1, rows2):244    """Check that two sequences contain the same lists of dictionaries"""245    def norm_row(row):246        if isinstance(row, dict):247            return tuple((k, row[k]) for k in sorted(row))248        else:249            return tuple(sorted(row))250    def norm_rows(rows):251        return tuple(sorted(norm_row(row) for row in rows))252    assert_equal(norm_rows(rows1), norm_rows(rows2))253def assert_length(sequence, expected, message=None):254    """Assert a sequence or iterable has an expected length."""255    length = len(list(sequence))256    assert length == expected, (message or257        "%(sequence)s has length %(length)s expected %(expected)s" % locals()258    )259def assert_is(left, right, message=None):260    """Assert that left and right are the same object"""261    assert left is right, (262        message or "expected %(left)r is %(right)r" % locals()263    )264def assert_is_not(left, right, message=None):265    """Assert that left and right are not the same object"""266    assert left is not right, (267        message or "expected %(left)r is not %(right)r" % locals()268    )269def assert_all_match_regex(pattern, values, message=None):270    """Assert that all values in an iterable match a regex pattern.271    Args:272    pattern -- a regex.273    values -- an iterable of values to test.274    Raises AssertionError if any value does not match.275    """276    for value in values:277        if not message:278            message = "expected %(value)r to match %(pattern)r" % locals()279        assert re.match(pattern, value), message280def assert_match_regex(pattern, value, *args, **kwargs):281    """Assert that a single value matches a regex pattern."""282    assert_all_match_regex(pattern, [value], *args, **kwargs)283assert_matches_regex = assert_match_regex284def assert_any_match_regex(pattern, values, message=None):285    """Assert that at least one value in an iterable matches a regex pattern.286    Args:287    pattern -- a regex.288    values -- an iterable of values to test.289    Raises AssertionError if all values don't match.290    """291    for value in values:292        if re.match(pattern, value) is not None:293            return294    if not message:295        message = (296            "expected at least one %(values)r to match %(pattern)r" % locals()297        )298    raise AssertionError(message)299def assert_all_not_match_regex(pattern, values, message=None):300    """Assert that all values don't match a regex pattern.301    Args:302    pattern -- a regex.303    values -- an iterable of values to test.304    Raises AssertionError if any values matches.305    """306    for value in values:307        if not message:308            message = "expected %(value)r to not match %(pattern)r" % locals()309        assert not re.match(pattern, value), message310assert_none_match_regex = assert_all_not_match_regex311def assert_sets_equal(left, right, message=None):312    """Assert that two sets are equal."""313    if left != right:314        extra_left = left - right315        extra_right = right - left316        if not message:317            message = (318                "expected %(left)r == %(right)r "319                "[left has:%(extra_left)r, "320                "right has:%(extra_right)r]"321            ) % locals()322        raise AssertionError(message)323def assert_dicts_equal(left, right, ignore_keys=None, message=None):324    """Assert that two dictionarys are equal (optionally ignoring certain keys)."""325    if ignore_keys is not None:326        left = dict((k, left[k]) for k in left if k not in ignore_keys)327        right = dict((k, right[k]) for k in right if k not in ignore_keys)328    if left == right:329        return330    extra_left = _dict_subtract(left, right)331    extra_right = _dict_subtract(right, left)332    if not message:333        message = (334            "expected %(left)r == %(right)r "335            "[left has:%(extra_left)r, "336            "right has:%(extra_right)r]"337        ) % locals()338    raise AssertionError(message)339def assert_dict_subset(left, right, message=None):340    """Assert that a dictionary is a strict subset of another dictionary.341    Checks both keys and values.342    """343    difference_dict = _dict_subtract(left, right)344    if not difference_dict:345        return346    extra_left = difference_dict347    small_right = dict((k, right[k]) for k in right if k in list(left.keys()))348    extra_right = _dict_subtract(small_right, left)349    if not message:350        message = (351            "[subset has:%(extra_left)r, superset has:%(extra_right)s]"352        ) % locals()353    raise AssertionError(message)354def assert_subset(left, right, message=None):355    """Assert that the left set is a subset of the right set."""356    set_left = set(left)357    set_right = set(right)358    if not (set_left <= set_right):359        extra = set_left - set_right360        if not message:361            message = (362                "expected %(set_left)r <= %(set_right)r [left has:%(extra)r]"...

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