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Refs #32061 -- Unified DatabaseClient.runshell() in db backends.

This commit is contained in:
Simon Charette 2020-10-04 18:25:29 -04:00 committed by Mariusz Felisiak
parent 4ac2d4fa42
commit bbe6fbb876
16 changed files with 272 additions and 206 deletions
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16
django/db/backends/base/client.py
View File

@ -1,3 +1,7 @@
import os
import subprocess
class BaseDatabaseClient:
"""Encapsulate backend-specific methods for opening a client shell."""
# This should be a string representing the name of the executable
@ -8,5 +12,15 @@ class BaseDatabaseClient:
# connection is an instance of BaseDatabaseWrapper.
self.connection = connection
@classmethod
def settings_to_cmd_args_env(cls, settings_dict, parameters):
raise NotImplementedError(
'subclasses of BaseDatabaseClient must provide a '
'settings_to_cmd_args_env() method or override a runshell().'
)
def runshell(self, parameters):
raise NotImplementedError('subclasses of BaseDatabaseClient must provide a runshell() method')
args, env = self.settings_to_cmd_args_env(self.connection.settings_dict, parameters)
if env:
env = {**os.environ, **env}
subprocess.run(args, env=env, check=True)

10
django/db/backends/mysql/client.py
View File

@ -1,5 +1,3 @@
import subprocess
from django.db.backends.base.client import BaseDatabaseClient
@ -7,7 +5,7 @@ class DatabaseClient(BaseDatabaseClient):
executable_name = 'mysql'
@classmethod
def settings_to_cmd_args(cls, settings_dict, parameters):
def settings_to_cmd_args_env(cls, settings_dict, parameters):
args = [cls.executable_name]
db = settings_dict['OPTIONS'].get('db', settings_dict['NAME'])
user = settings_dict['OPTIONS'].get('user', settings_dict['USER'])
@ -48,8 +46,4 @@ class DatabaseClient(BaseDatabaseClient):
if db:
args += [db]
args.extend(parameters)
return args
def runshell(self, parameters):
args = DatabaseClient.settings_to_cmd_args(self.connection.settings_dict, parameters)
subprocess.run(args, check=True)
return args, None

12
django/db/backends/mysql/creation.py
View File

@ -1,3 +1,4 @@
import os
import subprocess
import sys
@ -55,12 +56,13 @@ class DatabaseCreation(BaseDatabaseCreation):
self._clone_db(source_database_name, target_database_name)
def _clone_db(self, source_database_name, target_database_name):
dump_args = DatabaseClient.settings_to_cmd_args(self.connection.settings_dict, [])[1:]
dump_cmd = ['mysqldump', *dump_args[:-1], '--routines', '--events', source_database_name]
load_cmd = DatabaseClient.settings_to_cmd_args(self.connection.settings_dict, [])
cmd_args, cmd_env = DatabaseClient.settings_to_cmd_args_env(self.connection.settings_dict, [])
dump_cmd = ['mysqldump', *cmd_args[1:-1], '--routines', '--events', source_database_name]
dump_env = load_env = {**os.environ, **cmd_env} if cmd_env else None
load_cmd = cmd_args
load_cmd[-1] = target_database_name
with subprocess.Popen(dump_cmd, stdout=subprocess.PIPE) as dump_proc:
with subprocess.Popen(load_cmd, stdin=dump_proc.stdout, stdout=subprocess.DEVNULL):
with subprocess.Popen(dump_cmd, stdout=subprocess.PIPE, env=dump_env) as dump_proc:
with subprocess.Popen(load_cmd, stdin=dump_proc.stdout, stdout=subprocess.DEVNULL, env=load_env):
# Allow dump_proc to receive a SIGPIPE if the load process exits.
dump_proc.stdout.close()

15
django/db/backends/oracle/base.py
View File

@ -56,7 +56,7 @@ from .features import DatabaseFeatures # NOQA isort:skip
from .introspection import DatabaseIntrospection # NOQA isort:skip
from .operations import DatabaseOperations # NOQA isort:skip
from .schema import DatabaseSchemaEditor # NOQA isort:skip
from .utils import Oracle_datetime # NOQA isort:skip
from .utils import dsn, Oracle_datetime # NOQA isort:skip
from .validation import DatabaseValidation # NOQA isort:skip
@ -218,17 +218,6 @@ class DatabaseWrapper(BaseDatabaseWrapper):
use_returning_into = self.settings_dict["OPTIONS"].get('use_returning_into', True)
self.features.can_return_columns_from_insert = use_returning_into
def _dsn(self):
settings_dict = self.settings_dict
if not settings_dict['HOST'].strip():
settings_dict['HOST'] = 'localhost'
if settings_dict['PORT']:
return Database.makedsn(settings_dict['HOST'], int(settings_dict['PORT']), settings_dict['NAME'])
return settings_dict['NAME']
def _connect_string(self):
return '%s/"%s"@%s' % (self.settings_dict['USER'], self.settings_dict['PASSWORD'], self._dsn())
def get_connection_params(self):
conn_params = self.settings_dict['OPTIONS'].copy()
if 'use_returning_into' in conn_params:
@ -240,7 +229,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
return Database.connect(
user=self.settings_dict['USER'],
password=self.settings_dict['PASSWORD'],
dsn=self._dsn(),
dsn=dsn(self.settings_dict),
**conn_params,
)

21
django/db/backends/oracle/client.py
View File

@ -1,5 +1,4 @@
import shutil
import subprocess
from django.db.backends.base.client import BaseDatabaseClient
@ -8,11 +7,21 @@ class DatabaseClient(BaseDatabaseClient):
executable_name = 'sqlplus'
wrapper_name = 'rlwrap'
def runshell(self, parameters):
conn_string = self.connection._connect_string()
args = [self.executable_name, "-L", conn_string]
wrapper_path = shutil.which(self.wrapper_name)
@staticmethod
def connect_string(settings_dict):
from django.db.backends.oracle.utils import dsn
return '%s/"%s"@%s' % (
settings_dict['USER'],
settings_dict['PASSWORD'],
dsn(settings_dict),
)
@classmethod
def settings_to_cmd_args_env(cls, settings_dict, parameters):
args = [cls.executable_name, '-L', cls.connect_string(settings_dict)]
wrapper_path = shutil.which(cls.wrapper_name)
if wrapper_path:
args = [wrapper_path, *args]
args.extend(parameters)
subprocess.run(args, check=True)
return args, None

7
django/db/backends/oracle/utils.py
View File

@ -82,3 +82,10 @@ class BulkInsertMapper:
'TextField': CLOB,
'TimeField': TIMESTAMP,
}
def dsn(settings_dict):
if settings_dict['PORT']:
host = settings_dict['HOST'].strip() or 'localhost'
return Database.makedsn(host, int(settings_dict['PORT']), settings_dict['NAME'])
return settings_dict['NAME']

45
django/db/backends/postgresql/client.py
View File

@ -1,6 +1,4 @@
import os
import signal
import subprocess
from django.db.backends.base.client import BaseDatabaseClient
@ -9,18 +7,19 @@ class DatabaseClient(BaseDatabaseClient):
executable_name = 'psql'
@classmethod
def runshell_db(cls, conn_params, parameters):
def settings_to_cmd_args_env(cls, settings_dict, parameters):
args = [cls.executable_name]
options = settings_dict.get('OPTIONS', {})
host = conn_params.get('host', '')
port = conn_params.get('port', '')
dbname = conn_params.get('database', '')
user = conn_params.get('user', '')
passwd = conn_params.get('password', '')
sslmode = conn_params.get('sslmode', '')
sslrootcert = conn_params.get('sslrootcert', '')
sslcert = conn_params.get('sslcert', '')
sslkey = conn_params.get('sslkey', '')
host = settings_dict.get('HOST')
port = settings_dict.get('PORT')
dbname = settings_dict.get('NAME') or 'postgres'
user = settings_dict.get('USER')
passwd = settings_dict.get('PASSWORD')
sslmode = options.get('sslmode')
sslrootcert = options.get('sslrootcert')
sslcert = options.get('sslcert')
sslkey = options.get('sslkey')
if user:
args += ['-U', user]
@ -31,25 +30,25 @@ class DatabaseClient(BaseDatabaseClient):
args += [dbname]
args.extend(parameters)
sigint_handler = signal.getsignal(signal.SIGINT)
subprocess_env = os.environ.copy()
env = {}
if passwd:
subprocess_env['PGPASSWORD'] = str(passwd)
env['PGPASSWORD'] = str(passwd)
if sslmode:
subprocess_env['PGSSLMODE'] = str(sslmode)
env['PGSSLMODE'] = str(sslmode)
if sslrootcert:
subprocess_env['PGSSLROOTCERT'] = str(sslrootcert)
env['PGSSLROOTCERT'] = str(sslrootcert)
if sslcert:
subprocess_env['PGSSLCERT'] = str(sslcert)
env['PGSSLCERT'] = str(sslcert)
if sslkey:
subprocess_env['PGSSLKEY'] = str(sslkey)
env['PGSSLKEY'] = str(sslkey)
return args, env
def runshell(self, parameters):
sigint_handler = signal.getsignal(signal.SIGINT)
try:
# Allow SIGINT to pass to psql to abort queries.
signal.signal(signal.SIGINT, signal.SIG_IGN)
subprocess.run(args, check=True, env=subprocess_env)
super().runshell(parameters)
finally:
# Restore the original SIGINT handler.
signal.signal(signal.SIGINT, sigint_handler)
def runshell(self, parameters):
self.runshell_db(self.connection.get_connection_params(), parameters)

19
django/db/backends/sqlite3/client.py
View File

@ -1,15 +1,16 @@
import subprocess
from django.db.backends.base.client import BaseDatabaseClient
class DatabaseClient(BaseDatabaseClient):
executable_name = 'sqlite3'
def runshell(self, parameters):
# TODO: Remove str() when dropping support for PY37.
# args parameter accepts path-like objects on Windows since Python 3.8.
args = [self.executable_name,
str(self.connection.settings_dict['NAME'])]
args.extend(parameters)
subprocess.run(args, check=True)
@classmethod
def settings_to_cmd_args_env(cls, settings_dict, parameters):
args = [
cls.executable_name,
# TODO: Remove str() when dropping support for PY37. args
# parameter accepts path-like objects on Windows since Python 3.8.
str(settings_dict['NAME']),
*parameters,
]
return args, None

6
docs/releases/3.2.txt
View File

@ -477,6 +477,12 @@ backends.
``DatabaseOperations.time_trunc_sql()`` now take the optional ``tzname``
argument in order to truncate in a specific timezone.
* ``DatabaseClient.runshell()`` now gets arguments and an optional dictionary
with environment variables to the underlying command-line client from
``DatabaseClient.settings_to_cmd_args_env()`` method. Third-party database
backends must implement ``DatabaseClient.settings_to_cmd_args_env()`` or
override ``DatabaseClient.runshell()``.
:mod:`django.contrib.admin`
---------------------------

16
tests/backends/base/test_client.py Normal file
View File

@ -0,0 +1,16 @@
from django.db import connection
from django.db.backends.base.client import BaseDatabaseClient
from django.test import SimpleTestCase
class SimpleDatabaseClientTests(SimpleTestCase):
def setUp(self):
self.client = BaseDatabaseClient(connection=connection)
def test_settings_to_cmd_args_env(self):
msg = (
'subclasses of BaseDatabaseClient must provide a '
'settings_to_cmd_args_env() method or override a runshell().'
)
with self.assertRaisesMessage(NotImplementedError, msg):
self.client.settings_to_cmd_args_env(None, None)

1
tests/backends/mysql/test_creation.py
View File

@ -78,6 +78,7 @@ class DatabaseCreationTests(SimpleTestCase):
'source_db',
],
stdout=subprocess.PIPE,
env=None,
),
])
finally:

5
tests/backends/oracle/tests.py
View File

@ -86,7 +86,10 @@ class TransactionalTests(TransactionTestCase):
old_password = connection.settings_dict['PASSWORD']
connection.settings_dict['PASSWORD'] = 'p@ssword'
try:
self.assertIn('/"p@ssword"@', connection._connect_string())
self.assertIn(
'/"p@ssword"@',
connection.client.connect_string(connection.settings_dict),
)
with self.assertRaises(DatabaseError) as context:
connection.cursor()
# Database exception: "ORA-01017: invalid username/password" is

120
tests/dbshell/test_mysql.py
View File

@ -3,32 +3,52 @@ from django.test import SimpleTestCase
class MySqlDbshellCommandTestCase(SimpleTestCase):
def settings_to_cmd_args_env(self, settings_dict, parameters=None):
if parameters is None:
parameters = []
return DatabaseClient.settings_to_cmd_args_env(settings_dict, parameters)
def test_fails_with_keyerror_on_incomplete_config(self):
with self.assertRaises(KeyError):
self.get_command_line_arguments({})
self.settings_to_cmd_args_env({})
def test_basic_params_specified_in_settings(self):
expected_args = [
'mysql',
'--user=someuser',
'--password=somepassword',
'--host=somehost',
'--port=444',
'somedbname',
]
expected_env = None
self.assertEqual(
['mysql', '--user=someuser', '--password=somepassword',
'--host=somehost', '--port=444', 'somedbname'],
self.get_command_line_arguments({
self.settings_to_cmd_args_env({
'NAME': 'somedbname',
'USER': 'someuser',
'PASSWORD': 'somepassword',
'HOST': 'somehost',
'PORT': 444,
'OPTIONS': {},
}))
}),
(expected_args, expected_env),
)
def test_options_override_settings_proper_values(self):
settings_port = 444
options_port = 555
self.assertNotEqual(settings_port, options_port, 'test pre-req')
expected_args = [
'mysql',
'--user=optionuser',
'--password=optionpassword',
'--host=optionhost',
'--port=%s' % options_port,
'optiondbname',
]
expected_env = None
self.assertEqual(
['mysql', '--user=optionuser', '--password=optionpassword',
'--host=optionhost', '--port={}'.format(options_port), 'optiondbname'],
self.get_command_line_arguments({
self.settings_to_cmd_args_env({
'NAME': 'settingdbname',
'USER': 'settinguser',
'PASSWORD': 'settingpassword',
@ -41,15 +61,22 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
'host': 'optionhost',
'port': options_port,
},
}))
}),
(expected_args, expected_env),
)
def test_options_password(self):
expected_args = [
'mysql',
'--user=someuser',
'--password=optionpassword',
'--host=somehost',
'--port=444',
'somedbname',
]
expected_env = None
self.assertEqual(
[
'mysql', '--user=someuser', '--password=optionpassword',
'--host=somehost', '--port=444', 'somedbname',
],
self.get_command_line_arguments({
self.settings_to_cmd_args_env({
'NAME': 'somedbname',
'USER': 'someuser',
'PASSWORD': 'settingpassword',
@ -57,16 +84,22 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
'PORT': 444,
'OPTIONS': {'password': 'optionpassword'},
}),
(expected_args, expected_env),
)
def test_options_charset(self):
expected_args = [
'mysql',
'--user=someuser',
'--password=somepassword',
'--host=somehost',
'--port=444',
'--default-character-set=utf8',
'somedbname',
]
expected_env = None
self.assertEqual(
[
'mysql', '--user=someuser', '--password=somepassword',
'--host=somehost', '--port=444',
'--default-character-set=utf8', 'somedbname',
],
self.get_command_line_arguments({
self.settings_to_cmd_args_env({
'NAME': 'somedbname',
'USER': 'someuser',
'PASSWORD': 'somepassword',
@ -74,27 +107,45 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
'PORT': 444,
'OPTIONS': {'charset': 'utf8'},
}),
(expected_args, expected_env),
)
def test_can_connect_using_sockets(self):
expected_args = [
'mysql',
'--user=someuser',
'--password=somepassword',
'--socket=/path/to/mysql.socket.file',
'somedbname',
]
expected_env = None
self.assertEqual(
['mysql', '--user=someuser', '--password=somepassword',
'--socket=/path/to/mysql.socket.file', 'somedbname'],
self.get_command_line_arguments({
self.settings_to_cmd_args_env({
'NAME': 'somedbname',
'USER': 'someuser',
'PASSWORD': 'somepassword',
'HOST': '/path/to/mysql.socket.file',
'PORT': None,
'OPTIONS': {},
}))
}),
(expected_args, expected_env),
)
def test_ssl_certificate_is_added(self):
expected_args = [
'mysql',
'--user=someuser',
'--password=somepassword',
'--host=somehost',
'--port=444',
'--ssl-ca=sslca',
'--ssl-cert=sslcert',
'--ssl-key=sslkey',
'somedbname',
]
expected_env = None
self.assertEqual(
['mysql', '--user=someuser', '--password=somepassword',
'--host=somehost', '--port=444', '--ssl-ca=sslca',
'--ssl-cert=sslcert', '--ssl-key=sslkey', 'somedbname'],
self.get_command_line_arguments({
self.settings_to_cmd_args_env({
'NAME': 'somedbname',
'USER': 'someuser',
'PASSWORD': 'somepassword',
@ -107,12 +158,13 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
'key': 'sslkey',
},
},
}))
}),
(expected_args, expected_env),
)
def test_parameters(self):
self.assertEqual(
['mysql', 'somedbname', '--help'],
self.get_command_line_arguments(
self.settings_to_cmd_args_env(
{
'NAME': 'somedbname',
'USER': None,
@ -123,9 +175,5 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
},
['--help'],
),
(['mysql', 'somedbname', '--help'], None),
)
def get_command_line_arguments(self, connection_settings, parameters=None):
if parameters is None:
parameters = []
return DatabaseClient.settings_to_cmd_args(connection_settings, parameters)

48
tests/dbshell/test_oracle.py
View File

@ -1,4 +1,3 @@
from subprocess import CompletedProcess
from unittest import mock, skipUnless
from django.db import connection
@ -6,37 +5,48 @@ from django.db.backends.oracle.client import DatabaseClient
from django.test import SimpleTestCase
@skipUnless(connection.vendor == 'oracle', 'Oracle tests')
@skipUnless(connection.vendor == 'oracle', 'Requires cx_Oracle to be installed')
class OracleDbshellTests(SimpleTestCase):
def _run_dbshell(self, rlwrap=False, parameters=None):
"""Run runshell command and capture its arguments."""
def _mock_subprocess_run(*args, **kwargs):
self.subprocess_args = list(*args)
return CompletedProcess(self.subprocess_args, 0)
def settings_to_cmd_args_env(self, settings_dict, parameters=None, rlwrap=False):
if parameters is None:
parameters = []
client = DatabaseClient(connection)
self.subprocess_args = None
with mock.patch('subprocess.run', new=_mock_subprocess_run):
with mock.patch('shutil.which', return_value='/usr/bin/rlwrap' if rlwrap else None):
client.runshell(parameters)
return self.subprocess_args
return DatabaseClient.settings_to_cmd_args_env(settings_dict, parameters)
def test_without_rlwrap(self):
expected_args = [
'sqlplus',
'-L',
connection.client.connect_string(connection.settings_dict),
]
self.assertEqual(
self._run_dbshell(rlwrap=False),
['sqlplus', '-L', connection._connect_string()],
self.settings_to_cmd_args_env(connection.settings_dict, rlwrap=False),
(expected_args, None),
)
def test_with_rlwrap(self):
expected_args = [
'/usr/bin/rlwrap',
'sqlplus',
'-L',
connection.client.connect_string(connection.settings_dict),
]
self.assertEqual(
self._run_dbshell(rlwrap=True),
['/usr/bin/rlwrap', 'sqlplus', '-L', connection._connect_string()],
self.settings_to_cmd_args_env(connection.settings_dict, rlwrap=True),
(expected_args, None),
)
def test_parameters(self):
expected_args = [
'sqlplus',
'-L',
connection.client.connect_string(connection.settings_dict),
'-HELP',
]
self.assertEqual(
self._run_dbshell(parameters=['-HELP']),
['sqlplus', '-L', connection._connect_string(), '-HELP'],
self.settings_to_cmd_args_env(
connection.settings_dict,
parameters=['-HELP'],
),
(expected_args, None),
)

87
tests/dbshell/test_postgresql.py
View File

@ -1,41 +1,25 @@
import os
import signal
import subprocess
from unittest import mock
from unittest import mock, skipUnless
from django.db import connection
from django.db.backends.postgresql.client import DatabaseClient
from django.test import SimpleTestCase
class PostgreSqlDbshellCommandTestCase(SimpleTestCase):
def _run_it(self, dbinfo, parameters=None):
"""
That function invokes the runshell command, while mocking
subprocess.run(). It returns a 2-tuple with:
- The command line list
- The dictionary of PG* environment variables, or {}.
"""
def _mock_subprocess_run(*args, env=os.environ, **kwargs):
self.subprocess_args = list(*args)
# PostgreSQL environment variables.
self.pg_env = {key: env[key] for key in env if key.startswith('PG')}
return subprocess.CompletedProcess(self.subprocess_args, 0)
def settings_to_cmd_args_env(self, settings_dict, parameters=None):
if parameters is None:
parameters = []
with mock.patch('subprocess.run', new=_mock_subprocess_run):
DatabaseClient.runshell_db(dbinfo, parameters)
return self.subprocess_args, self.pg_env
return DatabaseClient.settings_to_cmd_args_env(settings_dict, parameters)
def test_basic(self):
self.assertEqual(
self._run_it({
'database': 'dbname',
'user': 'someuser',
'password': 'somepassword',
'host': 'somehost',
'port': '444',
self.settings_to_cmd_args_env({
'NAME': 'dbname',
'USER': 'someuser',
'PASSWORD': 'somepassword',
'HOST': 'somehost',
'PORT': '444',
}), (
['psql', '-U', 'someuser', '-h', 'somehost', '-p', '444', 'dbname'],
{'PGPASSWORD': 'somepassword'},
@ -44,11 +28,11 @@ class PostgreSqlDbshellCommandTestCase(SimpleTestCase):
def test_nopass(self):
self.assertEqual(
self._run_it({
'database': 'dbname',
'user': 'someuser',
'host': 'somehost',
'port': '444',
self.settings_to_cmd_args_env({
'NAME': 'dbname',
'USER': 'someuser',
'HOST': 'somehost',
'PORT': '444',
}), (
['psql', '-U', 'someuser', '-h', 'somehost', '-p', '444', 'dbname'],
{},
@ -57,15 +41,17 @@ class PostgreSqlDbshellCommandTestCase(SimpleTestCase):
def test_ssl_certificate(self):
self.assertEqual(
self._run_it({
'database': 'dbname',
'user': 'someuser',
'host': 'somehost',
'port': '444',
self.settings_to_cmd_args_env({
'NAME': 'dbname',
'USER': 'someuser',
'HOST': 'somehost',
'PORT': '444',
'OPTIONS': {
'sslmode': 'verify-ca',
'sslrootcert': 'root.crt',
'sslcert': 'client.crt',
'sslkey': 'client.key',
},
}), (
['psql', '-U', 'someuser', '-h', 'somehost', '-p', '444', 'dbname'],
{
@ -79,12 +65,12 @@ class PostgreSqlDbshellCommandTestCase(SimpleTestCase):
def test_column(self):
self.assertEqual(
self._run_it({
'database': 'dbname',
'user': 'some:user',
'password': 'some:password',
'host': '::1',
'port': '444',
self.settings_to_cmd_args_env({
'NAME': 'dbname',
'USER': 'some:user',
'PASSWORD': 'some:password',
'HOST': '::1',
'PORT': '444',
}), (
['psql', '-U', 'some:user', '-h', '::1', '-p', '444', 'dbname'],
{'PGPASSWORD': 'some:password'},
@ -95,12 +81,12 @@ class PostgreSqlDbshellCommandTestCase(SimpleTestCase):
username = 'rôle'
password = 'sésame'
self.assertEqual(
self._run_it({
'database': 'dbname',
'user': username,
'password': password,
'host': 'somehost',
'port': '444',
self.settings_to_cmd_args_env({
'NAME': 'dbname',
'USER': username,
'PASSWORD': password,
'HOST': 'somehost',
'PORT': '444',
}), (
['psql', '-U', username, '-h', 'somehost', '-p', '444', 'dbname'],
{'PGPASSWORD': password},
@ -109,10 +95,11 @@ class PostgreSqlDbshellCommandTestCase(SimpleTestCase):
def test_parameters(self):
self.assertEqual(
self._run_it({'database': 'dbname'}, ['--help']),
self.settings_to_cmd_args_env({'NAME': 'dbname'}, ['--help']),
(['psql', 'dbname', '--help'], {}),
)
@skipUnless(connection.vendor == 'postgresql', 'Requires a PostgreSQL connection')
def test_sigint_handler(self):
"""SIGINT is ignored in Python and passed to psql to abort queries."""
def _mock_subprocess_run(*args, **kwargs):
@ -123,6 +110,6 @@ class PostgreSqlDbshellCommandTestCase(SimpleTestCase):
# The default handler isn't SIG_IGN.
self.assertNotEqual(sigint_handler, signal.SIG_IGN)
with mock.patch('subprocess.run', new=_mock_subprocess_run):
DatabaseClient.runshell_db({}, [])
connection.client.runshell([])
# dbshell restores the original handler.
self.assertEqual(sigint_handler, signal.getsignal(signal.SIGINT))

32
tests/dbshell/test_sqlite.py
View File

@ -1,43 +1,23 @@
from pathlib import Path
from subprocess import CompletedProcess
from unittest import mock, skipUnless
from django.db import connection
from django.db.backends.sqlite3.client import DatabaseClient
from django.test import SimpleTestCase
@skipUnless(connection.vendor == 'sqlite', 'SQLite tests.')
class SqliteDbshellCommandTestCase(SimpleTestCase):
def _run_dbshell(self, parameters=None):
"""Run runshell command and capture its arguments."""
def _mock_subprocess_run(*args, **kwargs):
self.subprocess_args = list(*args)
return CompletedProcess(self.subprocess_args, 0)
def settings_to_cmd_args_env(self, settings_dict, parameters=None):
if parameters is None:
parameters = []
client = DatabaseClient(connection)
with mock.patch('subprocess.run', new=_mock_subprocess_run):
client.runshell(parameters)
return self.subprocess_args
return DatabaseClient.settings_to_cmd_args_env(settings_dict, parameters)
def test_path_name(self):
with mock.patch.dict(
connection.settings_dict,
{'NAME': Path('test.db.sqlite3')},
):
self.assertEqual(
self._run_dbshell(),
['sqlite3', 'test.db.sqlite3'],
self.settings_to_cmd_args_env({'NAME': Path('test.db.sqlite3')}),
(['sqlite3', 'test.db.sqlite3'], None),
)
def test_parameters(self):
with mock.patch.dict(
connection.settings_dict,
{'NAME': Path('test.db.sqlite3')},
):
self.assertEqual(
self._run_dbshell(['-help']),
['sqlite3', 'test.db.sqlite3', '-help'],
self.settings_to_cmd_args_env({'NAME': 'test.db.sqlite3'}, ['-help']),
(['sqlite3', 'test.db.sqlite3', '-help'], None),
)