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[1.7.x] Fixed #24595 -- Prevented loss of null info in MySQL field alteration

Thanks Simon Percivall for the report, and Simon Charette and Tim
Graham for the reviews.
Backport of 02260ea3f6 from master.
This commit is contained in:
Claude Paroz
2015-04-11 16:10:31 +02:00
parent c3a9820251
commit ada0845dda
6 changed files with 90 additions and 29 deletions

View File

@@ -1032,9 +1032,18 @@ class OperationTests(OperationTestBase):
def assertIdTypeEqualsFkType():
with connection.cursor() as cursor:
id_type = [c.type_code for c in connection.introspection.get_table_description(cursor, "test_alflpkfk_pony") if c.name == "id"][0]
fk_type = [c.type_code for c in connection.introspection.get_table_description(cursor, "test_alflpkfk_rider") if c.name == "pony_id"][0]
id_type, id_null = [
(c.type_code, c.null_ok)
for c in connection.introspection.get_table_description(cursor, "test_alflpkfk_pony")
if c.name == "id"
][0]
fk_type, fk_null = [
(c.type_code, c.null_ok)
for c in connection.introspection.get_table_description(cursor, "test_alflpkfk_rider")
if c.name == "pony_id"
][0]
self.assertEqual(id_type, fk_type)
self.assertEqual(id_null, fk_null)
assertIdTypeEqualsFkType()
# Test the database alteration