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How to use _val_subtract method in Testify

Best Python code snippet using Testify_python

assertions.py

Source:assertions.py

...12try:13    STRING_TYPE = basestring14except: # py3k15    STRING_TYPE = str16def _val_subtract(val1, val2, dict_subtractor, list_subtractor):17    """18    Find the difference between two container types19    Returns:20    The difference between the values as defined by list_subtractor() and21    dict_subtractor() if both values are the same container type.22    None if val1 == val223    val1 if type(val1) != type(val1)24    Otherwise - the difference between the values25    """26    if val1 == val2:27        # if the values are the same, return a degenerate type28        # this case is not used by list_subtract or dict_subtract29        return type(val1)()30    if isinstance(val1, dict) and isinstance(val2, dict):31        val_diff = dict_subtractor(val1, val2)32    elif isinstance(val1, (list, tuple)) and isinstance(val2, (list, tuple)):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 Exception...

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