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import io
import sys
from django.contrib.auth.models import User
from django.core import management
from django.db import connection
from django.test import TestCase
from django.test.utils import override_settings
if connection.vendor == "postgresql":
from django.db.backends.postgresql import base as base_module
else:
from django.db.backends import utils as base_module
@override_settings(DEBUG=True)
class DebugSQLShellTestCase(TestCase):
def setUp(self):
self.original_wrapper = base_module.CursorDebugWrapper
# Since debugsqlshell monkey-patches django.db.backends.utils, we can
# test it simply by loading it, without executing it. But we have to
# undo the monkey-patch on exit.
command_name = "debugsqlshell"
app_name = management.get_commands()[command_name]
management.load_command_class(app_name, command_name)
def tearDown(self):
base_module.CursorDebugWrapper = self.original_wrapper
def test_command(self):
original_stdout, sys.stdout = sys.stdout, io.StringIO()
try:
User.objects.count()
self.assertIn("SELECT COUNT", sys.stdout.getvalue())
finally:
sys.stdout = original_stdout
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