Python optional Examples

Example #1

 class R(RequestSchema):
     querystring = {
         'name': (And(str,
                      Use(lambda v: v.lower())), 'The name of user'),
         optional('age'): (Use(int), 'The age of user'),
         'year': And(int, lambda v: 1900 < v < 2012)
     }

Example #2

 def test_using_default_value_that_is_falsely_evaluated(self):
     r = RequestSchema(querystring={optional('param', 0): Use(int)})
     assert r.validate_querystring({}) == {'param': 0}

Example #3

 def test_using_default_value_of_optional_param(self):
     r = RequestSchema(querystring={optional('param', 1): Use(int)})
     assert r.validate_querystring({}) == {'param': 1}

Example #4

 def test_default_value_is_the_final_value_to_be_used(self):
     r = RequestSchema(querystring={optional('param', 'blank'): Use(int)})
     assert r.validate_querystring({}) == {'param': 'blank'}

Example #5

 def test_optional_without_default_value(self):
     r = RequestSchema(querystring={optional('param'): Use(int)})
     assert r.validate_querystring({}) == {}

Example #6

File: test_validation.py Project: Hazer/tapioca

 def test_using_default_value_that_is_falsely_evaluated(self):
     r = RequestSchema(querystring={optional('param', 0): Use(int)})
     assert r.validate_querystring({}) == {'param': 0}

Example #7

File: test_validation.py Project: Hazer/tapioca

 def test_using_default_value_of_optional_param(self):
     r = RequestSchema(querystring={optional('param', 1): Use(int)})
     assert r.validate_querystring({}) == {'param': 1}

Example #8

File: test_validation.py Project: Hazer/tapioca

 def test_default_value_is_the_final_value_to_be_used(self):
     r = RequestSchema(querystring={optional('param', 'blank'): Use(int)})
     assert r.validate_querystring({}) == {'param': 'blank'}

Example #9

File: test_validation.py Project: Hazer/tapioca

 def test_optional_without_default_value(self):
     r = RequestSchema(querystring={optional('param'): Use(int)})
     assert r.validate_querystring({}) == {}