def test_chainception(self):
"""
You can also chain FilterChains together.
"""
fc1 = f.NotEmpty | f.Choice(choices=('Lucky', 'Dusty', 'Ned'))
fc2 = f.NotEmpty | f.MinLength(4)
self.filter_type = lambda: fc1 | fc2
self.assertFilterPasses('Lucky')
self.assertFilterErrors('El Guapo', [f.Choice.CODE_INVALID])
self.assertFilterErrors('Ned', [f.MinLength.CODE_TOO_SHORT])
def test_stop_after_invalid_value(self):
"""
A FilterChain stops processing the incoming value after any
filter fails.
"""
# This FilterChain will pretty much reject anything that you
# throw at it.
self.filter_type =\
lambda: f.MaxLength(3) | f.MinLength(8) | f.Required
# Note that the value 'foobar' fails both the MaxLength and the
# MinLength filters, but the FilterChain stops processing
# after MaxLength fails.
self.assertFilterErrors('foobar', [f.MaxLength.CODE_TOO_LONG])
def Filter2():
return f.Split(r'\s+') | f.MinLength(2)
def MyFilter(min_length=12):
return f.Unicode | f.MinLength(min_length)
def MyFilter():
return f.Unicode | f.Strip | f.MinLength(12)
