def test_is_valid(self):
doc = Document(collection='test')
doc.foo = Field()
assert doc.is_valid() is True
del doc.foo
doc.foo = InvalidField()
assert doc.is_valid() is False
def test_invalid_fields(self):
doc = Document(collection='test')
doc.foo = InvalidField()
doc.bar = InvalidField()
doc.ham = Field()
invalid_fields = doc.invalid_fields()
for field_name in ('foo', 'bar'):
assert field_name in invalid_fields
invalid_fields.remove(field_name)
assert len(invalid_fields) == 0