def test_false_emptiness(self):
"""Test that Properties with falsy empty values don't throw exceptions"""
class SophiesRecord(Record):
placeholder = Property()
aux_placeholder = Property(empty='')
age = Property(empty=0)
name = Property(empty=None)
sophie = SophiesRecord()
with self.assertRaises(AttributeError):
sophie.placeholder
with self.assertRaises(AttributeError):
sophie.aux_placeholder
self.assertFalse(sophie.aux_placeholder0)
self.assertFalse(sophie.age0)
self.assertFalse(sophie.name0)
self.assertFalse(sophie.placeholder0)
# the properties aren't really set...
self.assertEqual(VisitorPattern.visit(sophie), {})
sophie.age = 1
self.assertEqual(VisitorPattern.visit(sophie), {"age": 1})
sophie.age = 0
self.assertEqual(VisitorPattern.visit(sophie), {"age": 0})
del sophie.age
self.assertEqual(VisitorPattern.visit(sophie), {})
def test_false_emptiness(self):
"""Test that Properties with falsy empty values don't throw exceptions"""
class SophiesRecord(Record):
placeholder = Property()
aux_placeholder = Property(empty='')
age = Property(empty=0)
name = Property(empty=None)
sophie = SophiesRecord()
with self.assertRaises(AttributeError):
sophie.placeholder
with self.assertRaises(AttributeError):
sophie.aux_placeholder
self.assertFalse(sophie.aux_placeholder0)
self.assertFalse(sophie.age0)
self.assertFalse(sophie.name0)
self.assertFalse(sophie.placeholder0)
# the properties aren't really set...
self.assertEqual(VisitorPattern.visit(sophie), {})
sophie.age = 1
self.assertEqual(VisitorPattern.visit(sophie), {"age": 1})
sophie.age = 0
self.assertEqual(VisitorPattern.visit(sophie), {"age": 0})
del sophie.age
self.assertEqual(VisitorPattern.visit(sophie), {})
def test_cast_collection(self):
RecordList = list_of(Record)
casted = VisitorPattern.cast(RecordList, [{}, {}])
self.assertIsInstance(casted[0], Record)
self.assertIsInstance(casted, RecordList)
empty_casted = VisitorPattern.cast(RecordList, [])
self.assertIsInstance(empty_casted, RecordList)
def test_cast_collection(self):
RecordList = list_of(Record)
casted = VisitorPattern.cast(RecordList, [{}, {}])
self.assertIsInstance(casted[0], Record)
self.assertIsInstance(casted, RecordList)
empty_casted = VisitorPattern.cast(RecordList, [])
self.assertIsInstance(empty_casted, RecordList)
def test_false_emptiness(self):
"""Test that Properties with falsy empty values don't throw
exceptions"""
class SophiesRecord(Record):
placeholder = Property()
aux_placeholder = Property(default='')
age = Property(default=0)
name = V1Property(isa=basestring)
sophie = SophiesRecord()
with self.assertRaises(AttributeError):
sophie.placeholder
self.assertFalse(sophie.placeholder0)
self.assertEqual(sophie.aux_placeholder, '')
self.assertFalse(sophie.aux_placeholder0)
self.assertEqual(sophie.age, 0)
self.assertFalse(sophie.age0)
self.assertEqual(sophie.name, None)
with self.assertRaises(AttributeError):
sophie.name0
sophie.name = "Sophie"
self.assertEqual(sophie.name, "Sophie")
sophie.name = None
self.assertEqual(sophie.name, None)
# the properties aren't really set, but VisitorPattern sees them.
expected = {"age": 0, "aux_placeholder": ""}
self.assertEqual(VisitorPattern.visit(sophie), expected)
sophie.age = 1
expected['age'] = 1
self.assertEqual(VisitorPattern.visit(sophie), expected)
sophie.age = 0
expected['age'] = 0
self.assertEqual(VisitorPattern.visit(sophie), expected)
del sophie.age
self.assertEqual(VisitorPattern.visit(sophie), expected)
def test_false_emptiness(self):
"""Test that Properties with falsy empty values don't throw
exceptions"""
class SophiesRecord(Record):
placeholder = Property()
aux_placeholder = Property(default='')
age = Property(default=0)
name = V1Property(isa=basestring)
sophie = SophiesRecord()
with self.assertRaises(AttributeError):
sophie.placeholder
self.assertFalse(sophie.placeholder0)
self.assertEqual(sophie.aux_placeholder, '')
self.assertFalse(sophie.aux_placeholder0)
self.assertEqual(sophie.age, 0)
self.assertFalse(sophie.age0)
self.assertEqual(sophie.name, None)
with self.assertRaises(AttributeError):
sophie.name0
sophie.name = "Sophie"
self.assertEqual(sophie.name, "Sophie")
sophie.name = None
self.assertEqual(sophie.name, None)
# the properties aren't really set, but VisitorPattern sees them.
expected = {"age": 0, "aux_placeholder": ""}
self.assertEqual(VisitorPattern.visit(sophie), expected)
sophie.age = 1
expected['age'] = 1
self.assertEqual(VisitorPattern.visit(sophie), expected)
sophie.age = 0
expected['age'] = 0
self.assertEqual(VisitorPattern.visit(sophie), expected)
del sophie.age
self.assertEqual(VisitorPattern.visit(sophie), expected)
