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|
# -*- coding: utf-8 -*-
import importlib.util
import os
from io import StringIO
from django.core.management import CommandError, call_command
from django.test import TestCase
from django.test.utils import override_settings
from unittest import mock
class ResetDbExceptionsTests(TestCase):
"""Tests if reset_db command raises exceptions."""
def test_should_raise_CommandError_when_database_does_not_exist(self):
with self.assertRaisesRegex(
CommandError, "Unknown database non-existing_database"
):
call_command("reset_db", "--database=non-existing_database")
@override_settings(
DATABASES={
"default": {
"ENGINE": "django.db.backends.UNKNOWN",
"NAME": "test.db",
}
}
)
def test_should_raise_CommandError_when_unknown_database_engine(self):
with self.assertRaisesRegex(
CommandError, "Unknown database engine django.db.backends.UNKNOWN"
):
call_command("reset_db", "--noinput")
@override_settings(
DATABASES={
"default": {
"ENGINE": "django.db.backends.sqlite3",
}
}
)
def test_should_raise_CommandError_when_no_db_name_provided(self):
with self.assertRaisesRegex(
CommandError,
"You need to specify DATABASE_NAME in your Django settings file.",
):
call_command("reset_db", "--noinput")
@override_settings(
DATABASES={
"default": {
"ENGINE": "django.db.backends.sqlite3",
"NAME": "test_db.sqlite3",
}
}
)
class ResetDbSqlite3Tests(TestCase):
"""Tests for reset_db command and sqlite3 engine."""
@mock.patch("sys.stdout", new_callable=StringIO)
@mock.patch("django_extensions.management.commands.reset_db.input")
def test_should_cancel_reset_db_if_input_is_different_than_yes(
self, m_input, m_stdout
):
m_input.return_value = "no"
call_command("reset_db")
self.assertEqual("Reset cancelled.\n", m_stdout.getvalue())
@mock.patch("sys.stdout", new_callable=StringIO)
@mock.patch.object(os, "unlink")
def test_should_unlink_database_and_print_success_message(self, m_unlink, m_stdout):
call_command("reset_db", "--noinput", verbosity=2)
self.assertEqual("Reset successful.\n", m_stdout.getvalue())
m_unlink.assert_called_once_with("test_db.sqlite3")
@mock.patch("sys.stdout", new_callable=StringIO)
@mock.patch.object(
os,
"unlink",
side_effect=[
OSError,
],
)
def test_should_print_successful_message_even_if_unlink_failed(
self, m_unlink, m_stdout
):
call_command("reset_db", "--noinput", verbosity=2)
self.assertEqual("Reset successful.\n", m_stdout.getvalue())
m_unlink.assert_called_once_with("test_db.sqlite3")
@override_settings(
DATABASES={
"default": {
"ENGINE": "django.db.backends.mysql",
"NAME": "test_db",
"USER": "foo",
"PASSWORD": "bar",
"HOST": "127.0.0.1",
"PORT": "",
}
}
)
class ResetDbMysqlTests(TestCase):
"""Tests for reset_db command and mysql engine."""
@mock.patch("sys.stdout", new_callable=StringIO)
@mock.patch("django_extensions.management.commands.reset_db.input")
def test_should_cancel_reset_db_if_input_is_different_than_yes(
self, m_input, m_stdout
):
m_input.return_value = "no"
call_command("reset_db")
self.assertEqual("Reset cancelled.\n", m_stdout.getvalue())
@mock.patch("sys.stdout", new_callable=StringIO)
def test_should_drop_and_create_database_with_characterset_utf8_and_print_success_messsage(
self, m_stdout
):
m_database = mock.MagicMock()
m_database.__spec__ = mock.Mock()
m_connection = mock.Mock()
m_database.connect.return_value = m_connection
expected_calls = [
mock.call("DROP DATABASE IF EXISTS `test_db`"),
mock.call("CREATE DATABASE `test_db` CHARACTER SET utf8"),
]
with mock.patch.dict("sys.modules", MySQLdb=m_database):
call_command("reset_db", "--noinput", verbosity=2)
m_database.connect.assert_called_once_with(
host="127.0.0.1", passwd="bar", user="foo"
)
m_connection.query.assert_has_calls(expected_calls, any_order=False)
self.assertEqual("Reset successful.\n", m_stdout.getvalue())
@override_settings(
DATABASES={
"default": {
"ENGINE": "django.db.backends.mysql",
"NAME": "test_db",
"USER": "foo",
"PASSWORD": "bar",
"HOST": "/var/run/mysqld/mysql.sock",
"PORT": "3306",
},
}
)
@mock.patch("sys.stdout", new_callable=StringIO)
def test_should_drop_and_create_database_without_characterset_and_print_success_messsage(
self, m_stdout
):
m_database = mock.MagicMock()
m_database.__spec__ = mock.Mock()
m_connection = mock.Mock()
m_database.connect.return_value = m_connection
expected_calls = [
mock.call("DROP DATABASE IF EXISTS `test_db`"),
mock.call("CREATE DATABASE `test_db`"),
]
with mock.patch.dict("sys.modules", MySQLdb=m_database):
call_command("reset_db", "--noinput", "--no-utf8", verbosity=2)
m_database.connect.assert_called_once_with(
passwd="bar",
port=3306,
unix_socket="/var/run/mysqld/mysql.sock",
user="foo",
)
m_connection.query.assert_has_calls(expected_calls, any_order=False)
self.assertEqual("Reset successful.\n", m_stdout.getvalue())
@override_settings(
DATABASES={
"default": {
"ENGINE": "django.db.backends.postgresql_psycopg2",
"NAME": "test_db",
"USER": "foo",
"PASSWORD": "bar",
"HOST": "127.0.0.1",
"PORT": "5432",
}
}
)
class ResetDbPostgresqlTests(TestCase):
"""Tests for reset_db command and sqlite3 engine."""
@mock.patch("sys.stdout", new_callable=StringIO)
@mock.patch("django_extensions.management.commands.reset_db.input")
def test_should_cancel_reset_db_if_input_is_different_than_yes(
self, m_input, m_stdout
):
m_input.return_value = "no"
call_command("reset_db")
self.assertEqual("Reset cancelled.\n", m_stdout.getvalue())
@mock.patch("sys.stdout", new_callable=StringIO)
def test_should_drop_and_create_database_and_print_success_messsage(self, m_stdout):
m_database = mock.MagicMock()
m_database.__spec__ = mock.Mock()
m_cursor = mock.Mock()
m_database.connect.return_value.cursor.return_value = m_cursor
expected_calls = [
mock.call('DROP DATABASE "test_db";'),
mock.call(
'CREATE DATABASE "test_db" WITH OWNER = "foo" ENCODING = \'UTF8\';'
),
]
mock_kwargs = {"psycopg2": m_database}
has_psycopg3 = importlib.util.find_spec("psycopg") is not None
if has_psycopg3:
mock_kwargs = {"psycopg": m_database}
with mock.patch.dict("sys.modules", **mock_kwargs):
call_command("reset_db", "--noinput", verbosity=2)
m_database.connect.assert_called_once_with(
dbname="template1",
host="127.0.0.1",
password="bar",
port="5432",
user="foo",
)
m_cursor.execute.assert_has_calls(expected_calls, any_order=False)
self.assertEqual("Reset successful.\n", m_stdout.getvalue())
@override_settings(DEFAULT_TABLESPACE="TEST_TABLESPACE")
@mock.patch("sys.stdout", new_callable=StringIO)
def test_should_drop_create_database_close_sessions_and_print_success_messsage(
self, m_stdout
):
m_database = mock.MagicMock()
m_database.__spec__ = mock.Mock()
m_cursor = mock.Mock()
m_database.connect.return_value.cursor.return_value = m_cursor
expected_calls = [
mock.call(
"\n SELECT pg_terminate_backend(pg_stat_activity.pid)\n FROM pg_stat_activity\n WHERE pg_stat_activity.datname = 'test_db';\n "
),
mock.call('DROP DATABASE "test_db";'),
mock.call(
'CREATE DATABASE "test_db" WITH OWNER = "foo" ENCODING = \'UTF8\' TABLESPACE = TEST_TABLESPACE;'
),
]
mock_kwargs = {"psycopg2": m_database}
has_psycopg3 = importlib.util.find_spec("psycopg") is not None
if has_psycopg3:
mock_kwargs = {"psycopg": m_database}
with mock.patch.dict("sys.modules", **mock_kwargs):
call_command("reset_db", "--noinput", "--close-sessions", verbosity=2)
m_database.connect.assert_called_once_with(
dbname="template1",
host="127.0.0.1",
password="bar",
port="5432",
user="foo",
)
m_cursor.execute.assert_has_calls(expected_calls, any_order=False)
self.assertEqual("Reset successful.\n", m_stdout.getvalue())
|
