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Fixed #31615 -- Made migrations skip extension operations if not needed.

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- Don't try to create an existing extension.
- Don't try to drop a nonexistent extension.
This commit is contained in:
Frantisek Holop 2020-05-22 11:40:34 +02:00 • committed by Mariusz Felisiak
parent f3ed42c8ad
commit d693a086de
4 changed files with 54 additions and 6 deletions
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31
tests/postgres_tests/test_operations.py
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@ -12,7 +12,8 @@ from . import PostgreSQLTestCase
try:
from django.contrib.postgres.operations import (
AddIndexConcurrently, CreateExtension, RemoveIndexConcurrently,
AddIndexConcurrently, BloomExtension, CreateExtension,
RemoveIndexConcurrently,
)
from django.contrib.postgres.indexes import BrinIndex, BTreeIndex
except ImportError:
@ -180,9 +181,33 @@ class CreateExtensionTests(PostgreSQLTestCase):
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertIn('CREATE EXTENSION', captured_queries[0]['sql'])
self.assertEqual(len(captured_queries), 4)
self.assertIn('CREATE EXTENSION', captured_queries[1]['sql'])
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertIn('DROP EXTENSION', captured_queries[0]['sql'])
self.assertEqual(len(captured_queries), 2)
self.assertIn('DROP EXTENSION', captured_queries[1]['sql'])
def test_create_existing_extension(self):
operation = BloomExtension()
project_state = ProjectState()
new_state = project_state.clone()
# Don't create an existing extension.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 3)
self.assertIn('SELECT', captured_queries[0]['sql'])
def test_drop_nonexistent_extension(self):
operation = CreateExtension('tablefunc')
project_state = ProjectState()
new_state = project_state.clone()
# Don't drop a nonexistent extension.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('SELECT', captured_queries[0]['sql'])