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from django.core.management.color import no_style
from django.core.management.sql import custom_sql_for_model
from django.db import DEFAULT_DB_ALIAS, connections
from django.test import TestCase, override_settings
from .models import Simple
class InitialSQLTests(TestCase):
"""
The format of the included SQL file for this test suite is important.
It must end with a trailing newline in order to test the fix for #2161.
"""
def test_initial_sql(self):
"""
As pointed out by #14661, test data loaded by custom SQL
can't be relied upon; as a result, the test framework flushes the
data contents before every test. This test validates that this has
occurred.
"""
self.assertEqual(Simple.objects.count(), 0)
def test_custom_sql(self):
"""
Simulate the custom SQL loading by migrate.
"""
connection = connections[DEFAULT_DB_ALIAS]
custom_sql = custom_sql_for_model(Simple, no_style(), connection)
with connection.cursor() as cursor:
for sql in custom_sql:
cursor.execute(sql)
self.assertEqual(Simple.objects.count(), 9)
self.assertEqual(
Simple.objects.get(name__contains='placeholders').name,
'"100%" of % are not placeholders'
)
@override_settings(DEBUG=True)
def test_custom_sql_debug(self):
"""
Same test, ensure that CursorDebugWrapper doesn't alter sql loading
(#3485).
"""
self.test_custom_sql()
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