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#!/usr/bin/env python
from sqlalchemy import create_engine
from sqlalchemy.schema import MetaData, Table, Column
from sqlalchemy.types import String, Integer
from sqlalchemy.orm import scoped_session, sessionmaker
from unittest import TestCase
from wtforms.ext.sqlalchemy.fields import QuerySelectField, QuerySelectMultipleField
from wtforms.form import Form
class LazySelect(object):
def __call__(self, field, **kwargs):
return list((val, unicode(label), selected) for val, label, selected in field.iter_choices())
class DummyPostData(dict):
def getlist(self, key):
return self[key]
class Base(object):
def __init__(self, **kwargs):
for k, v in kwargs.iteritems():
setattr(self, k, v)
class TestBase(TestCase):
def _do_tables(self, mapper, engine):
metadata = MetaData()
test_table = Table('test', metadata,
Column('id', Integer, primary_key=True, nullable=False),
Column('name', String, nullable=False),
)
pk_test_table = Table('pk_test', metadata,
Column('foobar', String, primary_key=True, nullable=False),
Column('baz', String, nullable=False),
)
Test = type('Test', (Base, ), {})
PKTest = type('PKTest', (Base, ), {
'__unicode__': lambda x: x.baz,
'__str__': lambda x: x.baz,
})
mapper(Test, test_table, order_by=[test_table.c.name])
mapper(PKTest, pk_test_table, order_by=[pk_test_table.c.baz])
self.Test = Test
self.PKTest = PKTest
metadata.create_all(bind=engine)
def _fill(self, sess):
for i, n in [(1, 'apple'),(2, 'banana')]:
s = self.Test(id=i, name=n)
p = self.PKTest(foobar='hello%s' % (i, ), baz=n)
sess.add(s)
sess.add(p)
sess.flush()
sess.commit()
class QuerySelectFieldTest(TestBase):
def setUp(self):
engine = create_engine('sqlite:///:memory:', echo=False)
self.Session = sessionmaker(bind=engine)
from sqlalchemy.orm import mapper
self._do_tables(mapper, engine)
def test_without_factory(self):
sess = self.Session()
self._fill(sess)
class F(Form):
a = QuerySelectField(get_label='name', widget=LazySelect(), get_pk=lambda x: x.id)
form = F(DummyPostData(a=['1']))
form.a.query = sess.query(self.Test)
self.assert_(form.a.data is not None)
self.assertEqual(form.a.data.id, 1)
self.assertEqual(form.a(), [(u'1', 'apple', True), (u'2', 'banana', False)])
self.assert_(form.validate())
def test_with_query_factory(self):
sess = self.Session()
self._fill(sess)
class F(Form):
a = QuerySelectField(get_label=(lambda model: model.name), query_factory=lambda:sess.query(self.Test), widget=LazySelect())
b = QuerySelectField(allow_blank=True, query_factory=lambda:sess.query(self.PKTest), widget=LazySelect())
form = F()
self.assertEqual(form.a.data, None)
self.assertEqual(form.a(), [(u'1', 'apple', False), (u'2', 'banana', False)])
self.assertEqual(form.b.data, None)
self.assertEqual(form.b(), [(u'__None', '', True), (u'hello1', 'apple', False), (u'hello2', 'banana', False)])
self.assert_(not form.validate())
form = F(DummyPostData(a=[u'1'], b=[u'hello2']))
self.assertEqual(form.a.data.id, 1)
self.assertEqual(form.a(), [(u'1', 'apple', True), (u'2', 'banana', False)])
self.assertEqual(form.b.data.baz, 'banana')
self.assertEqual(form.b(), [(u'__None', '', False), (u'hello1', 'apple', False), (u'hello2', 'banana', True)])
self.assert_(form.validate())
# Make sure the query iQuerySelectMultipleFields cached
sess.add(self.Test(id=3, name='meh'))
sess.flush()
sess.commit()
self.assertEqual(form.a(), [(u'1', 'apple', True), (u'2', 'banana', False)])
form.a._object_list = None
self.assertEqual(form.a(), [(u'1', 'apple', True), (u'2', 'banana', False), (u'3', 'meh', False)])
class QuerySelectMultipleFieldTest(TestBase):
def setUp(self):
from sqlalchemy.orm import mapper
engine = create_engine('sqlite:///:memory:', echo=False)
Session = sessionmaker(bind=engine)
self._do_tables(mapper, engine)
self.sess = Session()
self._fill(self.sess)
class F(Form):
a = QuerySelectMultipleField(get_label='name', widget=LazySelect())
def test_unpopulated_default(self):
form = self.F()
self.assertEqual([], form.a.data)
def test_single_value_without_factory(self):
form = self.F(DummyPostData(a=['1']))
form.a.query = self.sess.query(self.Test)
self.assertEqual([1], [v.id for v in form.a.data])
self.assertEqual(form.a(), [(u'1', 'apple', True), (u'2', 'banana', False)])
self.assert_(form.validate())
def test_multiple_values_without_query_factory(self):
form = self.F(DummyPostData(a=['1', '2']))
form.a.query = self.sess.query(self.Test)
self.assertEqual([1, 2], [v.id for v in form.a.data])
self.assertEqual(form.a(), [(u'1', 'apple', True), (u'2', 'banana', True)])
self.assert_(form.validate())
form = self.F(DummyPostData(a=['1', '3']))
form.a.query = self.sess.query(self.Test)
self.assertEqual([x.id for x in form.a.data], [1])
self.assert_(not form.validate())
def test_single_default_value(self):
first_test = self.sess.query(self.Test).get(2)
class F(Form):
a = QuerySelectMultipleField(get_label='name', default=[first_test],
widget=LazySelect(), query_factory=lambda: self.sess.query(self.Test))
form = F()
self.assertEqual([v.id for v in form.a.data], [2])
self.assertEqual(form.a(), [(u'1', 'apple', False), (u'2', 'banana', True)])
self.assert_(form.validate())
if __name__ == '__main__':
from unittest import main
main()
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