def test_field_info03(self):
"Invalid fields."
with self.assertRaises(FieldDoesNotExist):
meta.FieldInfo(FakeContact, 'invalid')
with self.assertRaises(FieldDoesNotExist):
meta.FieldInfo(FakeContact, 'image__invalid')
with self.assertRaises(FieldDoesNotExist):
meta.FieldInfo(FakeContact, 'invalid__invalidtoo')
def test_field_info_slice06(self):
"Step is forbidden"
fi = meta.FieldInfo(FakeContact, 'image__user')
with self.assertRaises(ValueError):
_ = fi[::0]
with self.assertRaises(ValueError):
_ = fi[::2]
def test_field_info_slice05(self):
"Big start"
fi = meta.FieldInfo(FakeContact, 'image__user')
with self.assertNoException():
sub_fi = fi[5:] # Empty
self.assertEqual(FakeContact, sub_fi.model)
self.assertFalse(sub_fi)
def test_field_info01(self):
"Simple field"
fi = meta.FieldInfo(FakeContact, 'first_name')
self.assertEqual(FakeContact, fi.model)
self.assertEqual(1, len(fi))
self.assertIs(True, bool(fi))
with self.assertNoException():
base_field = fi[0]
self.assertEqual(FakeContact._meta.get_field('first_name'), base_field)
self.assertEqual(FakeOrganisation._meta.get_field('name'),
meta.FieldInfo(FakeOrganisation, 'name')[0])
# FK
self.assertEqual(FakeContact._meta.get_field('image'),
meta.FieldInfo(FakeContact, 'image')[0])
def test_field_info02(self):
"depth > 1"
fi = meta.FieldInfo(FakeContact, 'image__name')
self.assertEqual(2, len(fi))
self.assertEqual(FakeContact._meta.get_field('image'), fi[0])
self.assertEqual(FakeImage._meta.get_field('name'), fi[1])
self.assertEqual(f'{_("Photograph")} - {_("Name")}', fi.verbose_name)
with self.assertNoException():
fi_as_list = [
*meta.FieldInfo(FakeContact, 'image__user__username')
]
self.assertListEqual([
FakeContact._meta.get_field('image'),
FakeImage._meta.get_field('user'),
get_user_model()._meta.get_field('username'),
], fi_as_list)
def test_field_info_slice03(self):
"Negative start."
fi = meta.FieldInfo(FakeContact, 'image__user__username')
with self.assertNoException():
sub_fi = fi[-1:] # User.username
User = get_user_model()
self.assertEqual(User, sub_fi.model)
self.assertEqual(1, len(sub_fi))
self.assertEqual(User._meta.get_field('username'), sub_fi[0])
def test_field_info02(self):
"depth > 1"
fi = meta.FieldInfo(FakeContact, 'image__name')
self.assertEqual(2, len(fi))
self.assertEqual(FakeContact._meta.get_field('image'), fi[0])
self.assertEqual(FakeImage._meta.get_field('name'), fi[1])
self.assertEqual(
_(u'Photograph') + ' - ' + _(u'Name'), fi.verbose_name)
with self.assertNoException():
fi_as_list = list(
meta.FieldInfo(FakeContact, 'image__user__username'))
self.assertEqual([
FakeContact._meta.get_field('image'),
FakeImage._meta.get_field('user'),
get_user_model()._meta.get_field('username'),
], fi_as_list)
def test_field_info_slice02(self):
"Stop (no start)."
fi = meta.FieldInfo(FakeContact, 'image__user__username')
with self.assertNoException():
sub_fi = fi[:2] # Contact.image__user__username
self.assertIsInstance(sub_fi, meta.FieldInfo)
self.assertEqual(FakeContact, sub_fi.model)
self.assertEqual(2, len(sub_fi))
self.assertEqual(FakeContact._meta.get_field('image'), sub_fi[0])
self.assertEqual(FakeImage._meta.get_field('user'), sub_fi[1])
def test_field_info_slice04(self):
"'very' negative start."
fi = meta.FieldInfo(FakeContact, 'image__user__username')
with self.assertNoException():
sub_fi = fi[-4:] # No change (Contact.image__user__username)
self.assertEqual(FakeContact, sub_fi.model)
self.assertEqual(3, len(sub_fi))
self.assertEqual(FakeContact._meta.get_field('image'), sub_fi[0])
self.assertEqual(FakeImage._meta.get_field('user'), sub_fi[1])
self.assertEqual(get_user_model()._meta.get_field('username'),
sub_fi[2])
def test_field_info_slice01(self):
"Start"
fi = meta.FieldInfo(FakeContact, 'image__user__username')
with self.assertNoException():
sub_fi = fi[1:] # Image.user__username
self.assertIsInstance(sub_fi, meta.FieldInfo)
self.assertEqual(FakeImage, sub_fi.model)
self.assertEqual(2, len(sub_fi))
self.assertEqual(FakeImage._meta.get_field('user'), sub_fi[0])
self.assertEqual(get_user_model()._meta.get_field('username'),
sub_fi[1])
empty_sub_fi = fi[3:]
self.assertEqual(FakeContact, empty_sub_fi.model)
self.assertEqual(0, len(empty_sub_fi))
self.assertIs(False, bool(empty_sub_fi))
