Breaking Voluptuous

breakvoluptuous.py

from voluptuous import Schema, Required, Range

schema = Schema({
    Required('a'): 1,
    Required('b'): {
        Range(min=1,max=20): [
            0,
            {
                Required('foo'): 42
            },
            2
        ]
    }
})

def geterr(doc):
    print(doc)
    try:
        schema(doc)
    except Exception as exc:
        print('\n'.join(['{}: {}'.format(e.msg, e.path) for e in exc.errors]))
    print('')

geterr({
    'b': {
        1: ['no'],
        -1: 'more no'
    }
})
# invalid list value: ['b', 1, 0]
# required key not provided: ['b']
# required key not provided: ['a']

geterr({
    'b': {
        999: ['no'],
        -1: 'more no'
    }
})
# extra keys not allowed: ['b', -1]
# required key not provided: ['b']
# required key not provided: ['a']

geterr({
    'b': {
        999: ['no']
    }
})
# extra keys not allowed: ['b', 999]
# required key not provided: ['b']
# required key not provided: ['a']