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Fixed #24183 -- Fixed wrong comparisons in Substr

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Josh Smeaton 2015-01-20 11:47:13 +11:00
parent 7f20041bca
commit 61c102d010
2 changed files with 14 additions and 2 deletions
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12
tests/db_functions/tests.py
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@ -278,6 +278,18 @@ class FunctionTests(TestCase):
with six.assertRaisesRegex(self, ValueError, "'pos' must be greater than 0"):
Author.objects.annotate(raises=Substr('name', 0))
def test_substr_with_expressions(self):
Author.objects.create(name='John Smith', alias='smithj')
Author.objects.create(name='Rhonda')
authors = Author.objects.annotate(name_part=Substr('name', V(5), V(3)))
self.assertQuerysetEqual(
authors.order_by('name'), [
' Sm',
'da',
],
lambda a: a.name_part
)
def test_nested_function_ordering(self):
Author.objects.create(name='John Smith')
Author.objects.create(name='Rhonda Simpson', alias='ronny')