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db_tests.py
944 lines (741 loc) · 31.4 KB
/
db_tests.py
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from itertools import permutations
try:
from Queue import Queue
except ImportError:
from queue import Queue
import re
import threading
from peewee import *
from peewee import Database
from peewee import FIELD
from peewee import attrdict
from peewee import sort_models
from .base import BaseTestCase
from .base import DatabaseTestCase
from .base import IS_CRDB
from .base import IS_MYSQL
from .base import IS_POSTGRESQL
from .base import IS_SQLITE
from .base import ModelTestCase
from .base import TestModel
from .base import db
from .base import db_loader
from .base import get_in_memory_db
from .base import requires_models
from .base import requires_postgresql
from .base_models import Category
from .base_models import Tweet
from .base_models import User
class TestDatabase(DatabaseTestCase):
database = db_loader('sqlite3')
def test_pragmas(self):
self.database.cache_size = -2048
self.assertEqual(self.database.cache_size, -2048)
self.database.cache_size = -4096
self.assertEqual(self.database.cache_size, -4096)
self.database.foreign_keys = 'on'
self.assertEqual(self.database.foreign_keys, 1)
self.database.foreign_keys = 'off'
self.assertEqual(self.database.foreign_keys, 0)
def test_appid_user_version(self):
self.assertEqual(self.database.application_id, 0)
self.assertEqual(self.database.user_version, 0)
self.database.application_id = 1
self.database.user_version = 2
self.assertEqual(self.database.application_id, 1)
self.assertEqual(self.database.user_version, 2)
self.assertTrue(self.database.close())
self.assertTrue(self.database.connect())
self.assertEqual(self.database.application_id, 1)
self.assertEqual(self.database.user_version, 2)
def test_timeout_semantics(self):
self.assertEqual(self.database.timeout, 5)
self.assertEqual(self.database.pragma('busy_timeout'), 5000)
self.database.timeout = 2.5
self.assertEqual(self.database.timeout, 2.5)
self.assertEqual(self.database.pragma('busy_timeout'), 2500)
self.database.close()
self.database.connect()
self.assertEqual(self.database.timeout, 2.5)
self.assertEqual(self.database.pragma('busy_timeout'), 2500)
def test_pragmas_deferred(self):
pragmas = (('journal_mode', 'wal'),)
db = SqliteDatabase(None, pragmas=pragmas)
self.assertEqual(db._pragmas, pragmas)
# Test pragmas preserved after initializing.
db.init(':memory:')
self.assertEqual(db._pragmas, pragmas)
db = SqliteDatabase(None)
self.assertEqual(db._pragmas, ())
# Test pragmas are set and subsequently overwritten.
db.init(':memory:', pragmas=pragmas)
self.assertEqual(db._pragmas, pragmas)
db.init(':memory:', pragmas=())
self.assertEqual(db._pragmas, ())
# Test when specified twice, the previous value is overwritten.
db = SqliteDatabase(None, pragmas=pragmas)
db.init(':memory:', pragmas=(('cache_size', -8000),))
self.assertEqual(db._pragmas, (('cache_size', -8000),))
def test_pragmas_as_dict(self):
pragmas = {'journal_mode': 'wal'}
pragma_list = [('journal_mode', 'wal')]
db = SqliteDatabase(':memory:', pragmas=pragmas)
self.assertEqual(db._pragmas, pragma_list)
# Test deferred databases correctly handle pragma dicts.
db = SqliteDatabase(None, pragmas=pragmas)
self.assertEqual(db._pragmas, pragma_list)
db.init(':memory:')
self.assertEqual(db._pragmas, pragma_list)
db.init(':memory:', pragmas={})
self.assertEqual(db._pragmas, [])
def test_pragmas_permanent(self):
db = SqliteDatabase(':memory:')
db.execute_sql('pragma foreign_keys=0')
self.assertEqual(db.foreign_keys, 0)
db.pragma('foreign_keys', 1, True)
self.assertEqual(db.foreign_keys, 1)
db.close()
db.connect()
self.assertEqual(db.foreign_keys, 1)
def test_context_settings(self):
class TestDatabase(Database):
field_types = {'BIGINT': 'TEST_BIGINT', 'TEXT': 'TEST_TEXT'}
operations = {'LIKE': '~', 'NEW': '->>'}
param = '$'
test_db = TestDatabase(None)
state = test_db.get_sql_context().state
self.assertEqual(state.field_types['BIGINT'], 'TEST_BIGINT')
self.assertEqual(state.field_types['TEXT'], 'TEST_TEXT')
self.assertEqual(state.field_types['INT'], FIELD.INT)
self.assertEqual(state.field_types['VARCHAR'], FIELD.VARCHAR)
self.assertEqual(state.operations['LIKE'], '~')
self.assertEqual(state.operations['NEW'], '->>')
self.assertEqual(state.operations['ILIKE'], 'ILIKE')
self.assertEqual(state.param, '$')
self.assertEqual(state.quote, '""')
test_db2 = TestDatabase(None, field_types={'BIGINT': 'XXX_BIGINT',
'INT': 'XXX_INT'})
state = test_db2.get_sql_context().state
self.assertEqual(state.field_types['BIGINT'], 'XXX_BIGINT')
self.assertEqual(state.field_types['TEXT'], 'TEST_TEXT')
self.assertEqual(state.field_types['INT'], 'XXX_INT')
self.assertEqual(state.field_types['VARCHAR'], FIELD.VARCHAR)
def test_connection_state(self):
conn = self.database.connection()
self.assertFalse(self.database.is_closed())
self.database.close()
self.assertTrue(self.database.is_closed())
conn = self.database.connection()
self.assertFalse(self.database.is_closed())
def test_db_context_manager(self):
self.database.close()
self.assertTrue(self.database.is_closed())
with self.database:
self.assertFalse(self.database.is_closed())
self.assertTrue(self.database.is_closed())
self.database.connect()
self.assertFalse(self.database.is_closed())
# Enter context with an already-open db.
with self.database:
self.assertFalse(self.database.is_closed())
# Closed after exit.
self.assertTrue(self.database.is_closed())
def test_connection_initialization(self):
state = {'count': 0}
class TestDatabase(SqliteDatabase):
def _initialize_connection(self, conn):
state['count'] += 1
db = TestDatabase(':memory:')
self.assertEqual(state['count'], 0)
conn = db.connection()
self.assertEqual(state['count'], 1)
# Since already connected, nothing happens here.
conn = db.connection()
self.assertEqual(state['count'], 1)
def test_connect_semantics(self):
state = {'count': 0}
class TestDatabase(SqliteDatabase):
def _initialize_connection(self, conn):
state['count'] += 1
db = TestDatabase(':memory:')
db.connect()
self.assertEqual(state['count'], 1)
self.assertRaises(OperationalError, db.connect)
self.assertEqual(state['count'], 1)
self.assertFalse(db.connect(reuse_if_open=True))
self.assertEqual(state['count'], 1)
with db:
self.assertEqual(state['count'], 1)
self.assertFalse(db.is_closed())
self.assertTrue(db.is_closed())
with db:
self.assertEqual(state['count'], 2)
def test_execute_sql(self):
self.database.execute_sql('CREATE TABLE register (val INTEGER);')
self.database.execute_sql('INSERT INTO register (val) VALUES (?), (?)',
(1337, 31337))
cursor = self.database.execute_sql(
'SELECT val FROM register ORDER BY val')
self.assertEqual(cursor.fetchall(), [(1337,), (31337,)])
self.database.execute_sql('DROP TABLE register;')
def test_bind_helpers(self):
db = get_in_memory_db()
alt_db = get_in_memory_db()
class Base(Model):
class Meta:
database = db
class A(Base):
a = TextField()
class B(Base):
b = TextField()
db.create_tables([A, B])
# Temporarily bind A to alt_db.
with alt_db.bind_ctx([A]):
self.assertFalse(A.table_exists())
self.assertTrue(B.table_exists())
self.assertTrue(A.table_exists())
self.assertTrue(B.table_exists())
alt_db.bind([A])
self.assertFalse(A.table_exists())
self.assertTrue(B.table_exists())
db.close()
alt_db.close()
def test_bind_regression(self):
class Base(Model):
class Meta:
database = None
class A(Base): pass
class B(Base): pass
class AB(Base):
a = ForeignKeyField(A)
b = ForeignKeyField(B)
self.assertTrue(A._meta.database is None)
db = get_in_memory_db()
with db.bind_ctx([A, B]):
self.assertEqual(A._meta.database, db)
self.assertEqual(B._meta.database, db)
self.assertEqual(AB._meta.database, db)
self.assertTrue(A._meta.database is None)
self.assertTrue(B._meta.database is None)
self.assertTrue(AB._meta.database is None)
class C(Base):
a = ForeignKeyField(A)
with db.bind_ctx([C], bind_refs=False):
self.assertEqual(C._meta.database, db)
self.assertTrue(A._meta.database is None)
self.assertTrue(C._meta.database is None)
self.assertTrue(A._meta.database is None)
def test_batch_commit(self):
class PatchCommitDatabase(SqliteDatabase):
commits = 0
def begin(self): pass
def commit(self):
self.commits += 1
db = PatchCommitDatabase(':memory:')
def assertBatches(n_objs, batch_size, n_commits):
accum = []
source = range(n_objs)
db.commits = 0
for item in db.batch_commit(source, batch_size):
accum.append(item)
self.assertEqual(accum, list(range(n_objs)))
self.assertEqual(db.commits, n_commits)
assertBatches(12, 1, 12)
assertBatches(12, 2, 6)
assertBatches(12, 3, 4)
assertBatches(12, 4, 3)
assertBatches(12, 5, 3)
assertBatches(12, 6, 2)
assertBatches(12, 7, 2)
assertBatches(12, 11, 2)
assertBatches(12, 12, 1)
assertBatches(12, 13, 1)
def test_server_version(self):
class FakeDatabase(Database):
server_version = None
def _connect(self):
return 1
def _close(self, conn):
pass
def _set_server_version(self, conn):
self.server_version = (1, 33, 7)
db = FakeDatabase(':memory:')
self.assertTrue(db.server_version is None)
db.connect()
self.assertEqual(db.server_version, (1, 33, 7))
db.close()
self.assertEqual(db.server_version, (1, 33, 7))
db.server_version = (1, 2, 3)
db.connect()
self.assertEqual(db.server_version, (1, 2, 3))
db.close()
def test_explicit_connect(self):
db = get_in_memory_db(autoconnect=False)
self.assertRaises(InterfaceError, db.execute_sql, 'pragma cache_size')
with db:
db.execute_sql('pragma cache_size')
self.assertRaises(InterfaceError, db.cursor)
class TestThreadSafety(ModelTestCase):
nthreads = 4
nrows = 10
requires = [User]
def test_multiple_writers(self):
def create_users(idx):
for i in range(idx * self.nrows, (idx + 1) * self.nrows):
User.create(username='u%d' % i)
threads = []
for i in range(self.nthreads):
threads.append(threading.Thread(target=create_users, args=(i,)))
for t in threads: t.start()
for t in threads: t.join()
self.assertEqual(User.select().count(), self.nrows * self.nthreads)
def test_multiple_readers(self):
data = Queue()
def read_user_count(n):
for i in range(n):
data.put(User.select().count())
threads = []
for i in range(self.nthreads):
threads.append(threading.Thread(target=read_user_count,
args=(self.nrows,)))
for t in threads: t.start()
for t in threads: t.join()
self.assertEqual(data.qsize(), self.nrows * self.nthreads)
class TestDeferredDatabase(BaseTestCase):
def test_deferred_database(self):
deferred_db = SqliteDatabase(None)
self.assertTrue(deferred_db.deferred)
class DeferredModel(Model):
class Meta:
database = deferred_db
self.assertRaises(Exception, deferred_db.connect)
query = DeferredModel.select()
self.assertRaises(Exception, query.execute)
deferred_db.init(':memory:')
self.assertFalse(deferred_db.deferred)
conn = deferred_db.connect()
self.assertFalse(deferred_db.is_closed())
DeferredModel._schema.create_all()
self.assertEqual(list(DeferredModel.select()), [])
deferred_db.init(None)
self.assertTrue(deferred_db.deferred)
# The connection was automatically closed.
self.assertTrue(deferred_db.is_closed())
class CatToy(TestModel):
description = TextField()
class Meta:
schema = 'huey'
@requires_postgresql
class TestSchemaNamespace(ModelTestCase):
requires = [CatToy]
def setUp(self):
with self.database:
self.execute('CREATE SCHEMA huey;')
super(TestSchemaNamespace, self).setUp()
def tearDown(self):
super(TestSchemaNamespace, self).tearDown()
with self.database:
self.execute('DROP SCHEMA huey;')
def test_schema(self):
toy = CatToy.create(description='fur mouse')
toy_db = CatToy.select().where(CatToy.id == toy.id).get()
self.assertEqual(toy.id, toy_db.id)
self.assertEqual(toy.description, toy_db.description)
class TestSqliteIsolation(ModelTestCase):
database = db_loader('sqlite3')
requires = [User]
def test_sqlite_isolation(self):
for username in ('u1', 'u2', 'u3'): User.create(username=username)
new_db = db_loader('sqlite3')
curs = new_db.execute_sql('SELECT COUNT(*) FROM users')
self.assertEqual(curs.fetchone()[0], 3)
self.assertEqual(User.select().count(), 3)
self.assertEqual(User.delete().execute(), 3)
with self.database.atomic():
User.create(username='u4')
User.create(username='u5')
# Second conn does not see the changes.
curs = new_db.execute_sql('SELECT COUNT(*) FROM users')
self.assertEqual(curs.fetchone()[0], 0)
# Third conn does not see the changes.
new_db2 = db_loader('sqlite3')
curs = new_db2.execute_sql('SELECT COUNT(*) FROM users')
self.assertEqual(curs.fetchone()[0], 0)
# Original connection sees its own changes.
self.assertEqual(User.select().count(), 2)
curs = new_db.execute_sql('SELECT COUNT(*) FROM users')
self.assertEqual(curs.fetchone()[0], 2)
class UniqueModel(TestModel):
name = CharField(unique=True)
class IndexedModel(TestModel):
first = CharField()
last = CharField()
dob = DateField()
class Meta:
indexes = (
(('first', 'last', 'dob'), True),
(('first', 'last'), False),
)
class Note(TestModel):
content = TextField()
ts = DateTimeField()
status = IntegerField()
class Meta:
table_name = 'notes'
class Person(TestModel):
first = CharField()
last = CharField()
email = CharField()
class Meta:
indexes = (
(('last', 'first'), False),
)
class TestIntrospection(ModelTestCase):
requires = [Category, User, UniqueModel, IndexedModel, Person]
def test_table_exists(self):
self.assertTrue(self.database.table_exists(User._meta.table_name))
self.assertFalse(self.database.table_exists('nuggies'))
self.assertTrue(self.database.table_exists(User))
class X(TestModel): pass
self.assertFalse(self.database.table_exists(X))
def test_get_tables(self):
tables = self.database.get_tables()
required = set(m._meta.table_name for m in self.requires)
self.assertTrue(required.issubset(set(tables)))
UniqueModel._schema.drop_all()
tables = self.database.get_tables()
self.assertFalse(UniqueModel._meta.table_name in tables)
def test_get_indexes(self):
indexes = self.database.get_indexes('unique_model')
data = [(index.name, index.columns, index.unique, index.table)
for index in indexes
if index.name not in ('unique_model_pkey', 'PRIMARY')]
self.assertEqual(data, [
('unique_model_name', ['name'], True, 'unique_model')])
indexes = self.database.get_indexes('indexed_model')
data = [(index.name, index.columns, index.unique, index.table)
for index in indexes
if index.name not in ('indexed_model_pkey', 'PRIMARY')]
self.assertEqual(sorted(data), [
('indexed_model_first_last', ['first', 'last'], False,
'indexed_model'),
('indexed_model_first_last_dob', ['first', 'last', 'dob'], True,
'indexed_model')])
# Multi-column index where columns are in different order than declared
# on the table.
indexes = self.database.get_indexes('person')
data = [(index.name, index.columns, index.unique)
for index in indexes
if index.name not in ('person_pkey', 'PRIMARY')]
self.assertEqual(data, [
('person_last_first', ['last', 'first'], False)])
def test_get_columns(self):
columns = self.database.get_columns('indexed_model')
data = [(c.name, c.null, c.primary_key, c.table)
for c in columns]
self.assertEqual(data, [
('id', False, True, 'indexed_model'),
('first', False, False, 'indexed_model'),
('last', False, False, 'indexed_model'),
('dob', False, False, 'indexed_model')])
columns = self.database.get_columns('category')
data = [(c.name, c.null, c.primary_key, c.table)
for c in columns]
self.assertEqual(data, [
('name', False, True, 'category'),
('parent_id', True, False, 'category')])
def test_get_primary_keys(self):
primary_keys = self.database.get_primary_keys('users')
self.assertEqual(primary_keys, ['id'])
primary_keys = self.database.get_primary_keys('category')
self.assertEqual(primary_keys, ['name'])
@requires_models(Note)
def test_get_views(self):
def normalize_view_meta(view_meta):
sql_ws_norm = re.sub(r'[\n\s]+', ' ', view_meta.sql.strip('; '))
return view_meta.name, (sql_ws_norm
.replace('`peewee_test`.', '')
.replace('`notes`.', '')
.replace('`', ''))
def assertViews(expected):
# Create two sample views.
self.database.execute_sql('CREATE VIEW notes_public AS '
'SELECT content, ts FROM notes '
'WHERE status = 1 ORDER BY ts DESC')
self.database.execute_sql('CREATE VIEW notes_deleted AS '
'SELECT content FROM notes '
'WHERE status = 9 ORDER BY id DESC')
try:
views = self.database.get_views()
normalized = sorted([normalize_view_meta(v) for v in views])
self.assertEqual(normalized, expected)
# Ensure that we can use get_columns to introspect views.
columns = self.database.get_columns('notes_deleted')
self.assertEqual([c.name for c in columns], ['content'])
columns = self.database.get_columns('notes_public')
self.assertEqual([c.name for c in columns], ['content', 'ts'])
finally:
self.database.execute_sql('DROP VIEW notes_public;')
self.database.execute_sql('DROP VIEW notes_deleted;')
# Unfortunately, all databases seem to represent VIEW definitions
# differently internally.
if IS_SQLITE:
assertViews([
('notes_deleted', ('CREATE VIEW notes_deleted AS '
'SELECT content FROM notes '
'WHERE status = 9 ORDER BY id DESC')),
('notes_public', ('CREATE VIEW notes_public AS '
'SELECT content, ts FROM notes '
'WHERE status = 1 ORDER BY ts DESC'))])
elif IS_MYSQL:
assertViews([
('notes_deleted',
('select content AS content from notes '
'where status = 9 order by id desc')),
('notes_public',
('select content AS content,ts AS ts from notes '
'where status = 1 order by ts desc'))])
elif IS_POSTGRESQL:
assertViews([
('notes_deleted',
('SELECT notes.content FROM notes '
'WHERE (notes.status = 9) ORDER BY notes.id DESC')),
('notes_public',
('SELECT notes.content, notes.ts FROM notes '
'WHERE (notes.status = 1) ORDER BY notes.ts DESC'))])
elif IS_CRDB:
assertViews([
('notes_deleted',
('SELECT content FROM peewee_test.public.notes '
'WHERE status = 9 ORDER BY id DESC')),
('notes_public',
('SELECT content, ts FROM peewee_test.public.notes '
'WHERE status = 1 ORDER BY ts DESC'))])
@requires_models(User, Tweet, Category)
def test_get_foreign_keys(self):
foreign_keys = self.database.get_foreign_keys('tweet')
data = [(fk.column, fk.dest_table, fk.dest_column, fk.table)
for fk in foreign_keys]
self.assertEqual(data, [
('user_id', 'users', 'id', 'tweet')])
foreign_keys = self.database.get_foreign_keys('category')
data = [(fk.column, fk.dest_table, fk.dest_column, fk.table)
for fk in foreign_keys]
self.assertEqual(data, [
('parent_id', 'category', 'name', 'category')])
class TestSortModels(BaseTestCase):
def test_sort_models(self):
class A(Model):
pass
class B(Model):
a = ForeignKeyField(A)
class C(Model):
b = ForeignKeyField(B)
class D(Model):
c = ForeignKeyField(C)
class E(Model):
pass
models = [A, B, C, D, E]
for list_of_models in permutations(models):
sorted_models = sort_models(list_of_models)
self.assertEqual(sorted_models, models)
class TestDBProxy(BaseTestCase):
def test_proxy_context_manager(self):
db = Proxy()
class User(Model):
username = TextField()
class Meta:
database = db
self.assertRaises(AttributeError, User.create_table)
sqlite_db = SqliteDatabase(':memory:')
db.initialize(sqlite_db)
User.create_table()
with db:
self.assertFalse(db.is_closed())
self.assertTrue(db.is_closed())
def test_db_proxy(self):
db = Proxy()
class BaseModel(Model):
class Meta:
database = db
class User(BaseModel):
username = TextField()
class Tweet(BaseModel):
user = ForeignKeyField(User, backref='tweets')
message = TextField()
sqlite_db = SqliteDatabase(':memory:')
db.initialize(sqlite_db)
self.assertEqual(User._meta.database.database, ':memory:')
self.assertEqual(Tweet._meta.database.database, ':memory:')
self.assertTrue(User._meta.database.is_closed())
self.assertTrue(Tweet._meta.database.is_closed())
sqlite_db.connect()
self.assertFalse(User._meta.database.is_closed())
self.assertFalse(Tweet._meta.database.is_closed())
sqlite_db.close()
def test_proxy_decorator(self):
db = DatabaseProxy()
@db.connection_context()
def with_connection():
self.assertFalse(db.is_closed())
@db.atomic()
def with_transaction():
self.assertTrue(db.in_transaction())
@db.manual_commit()
def with_manual_commit():
self.assertTrue(db.in_transaction())
db.initialize(SqliteDatabase(':memory:'))
with_connection()
self.assertTrue(db.is_closed())
with_transaction()
self.assertFalse(db.in_transaction())
with_manual_commit()
self.assertFalse(db.in_transaction())
def test_proxy_bind_ctx_callbacks(self):
db = Proxy()
class BaseModel(Model):
class Meta:
database = db
class Hook(BaseModel):
data = BlobField() # Attaches hook to configure blob-type.
self.assertTrue(Hook.data._constructor is bytearray)
class CustomSqliteDB(SqliteDatabase):
sentinel = object()
def get_binary_type(self):
return self.sentinel
custom_db = CustomSqliteDB(':memory:')
with custom_db.bind_ctx([Hook]):
self.assertTrue(Hook.data._constructor is custom_db.sentinel)
self.assertTrue(Hook.data._constructor is bytearray)
class Data(TestModel):
key = TextField()
value = TextField()
class Meta:
schema = 'main'
class TestAttachDatabase(ModelTestCase):
database = db_loader('sqlite3')
requires = [Data]
def test_attach(self):
database = self.database
Data.create(key='k1', value='v1')
Data.create(key='k2', value='v2')
# Attach an in-memory cache database.
database.attach(':memory:', 'cache')
# Clone data into the in-memory cache.
class CacheData(Data):
class Meta:
schema = 'cache'
self.assertFalse(CacheData.table_exists())
CacheData.create_table(safe=False)
self.assertTrue(CacheData.table_exists())
(CacheData
.insert_from(Data.select(), fields=[Data.id, Data.key, Data.value])
.execute())
# Update the source data.
query = Data.update({Data.value: Data.value + '-x'})
self.assertEqual(query.execute(), 2)
# Verify the source data was updated.
query = Data.select(Data.key, Data.value).order_by(Data.key)
self.assertSQL(query, (
'SELECT "t1"."key", "t1"."value" '
'FROM "main"."data" AS "t1" '
'ORDER BY "t1"."key"'), [])
self.assertEqual([v for k, v in query.tuples()], ['v1-x', 'v2-x'])
# Verify the cached data reflects the original data, pre-update.
query = (CacheData
.select(CacheData.key, CacheData.value)
.order_by(CacheData.key))
self.assertSQL(query, (
'SELECT "t1"."key", "t1"."value" '
'FROM "cache"."cache_data" AS "t1" '
'ORDER BY "t1"."key"'), [])
self.assertEqual([v for k, v in query.tuples()], ['v1', 'v2'])
database.close()
# On re-connecting, the in-memory database will re-attached.
database.connect()
# Cache-Data table does not exist.
self.assertFalse(CacheData.table_exists())
# Double-check the sqlite master table.
curs = database.execute_sql('select * from cache.sqlite_master;')
self.assertEqual(curs.fetchall(), [])
# Because it's in-memory, the table needs to be re-created.
CacheData.create_table(safe=False)
self.assertEqual(CacheData.select().count(), 0)
# Original data is still there.
self.assertEqual(Data.select().count(), 2)
def test_attach_detach(self):
database = self.database
Data.create(key='k1', value='v1')
Data.create(key='k2', value='v2')
# Attach an in-memory cache database.
database.attach(':memory:', 'cache')
curs = database.execute_sql('select * from cache.sqlite_master')
self.assertEqual(curs.fetchall(), [])
self.assertFalse(database.attach(':memory:', 'cache'))
self.assertRaises(OperationalError, database.attach, 'foo.db', 'cache')
self.assertTrue(database.detach('cache'))
self.assertFalse(database.detach('cache'))
self.assertRaises(OperationalError, database.execute_sql,
'select * from cache.sqlite_master')
def test_sqlite_schema_support(self):
class CacheData(Data):
class Meta:
schema = 'cache'
# Attach an in-memory cache database and create the cache table.
self.database.attach(':memory:', 'cache')
CacheData.create_table()
tables = self.database.get_tables()
self.assertEqual(tables, ['data'])
tables = self.database.get_tables(schema='cache')
self.assertEqual(tables, ['cache_data'])
class TestDatabaseConnection(DatabaseTestCase):
def test_is_connection_usable(self):
# Ensure a connection is open.
conn = self.database.connection()
self.assertTrue(self.database.is_connection_usable())
self.database.close()
self.assertFalse(self.database.is_connection_usable())
self.database.connect()
self.assertTrue(self.database.is_connection_usable())
@requires_postgresql
def test_is_connection_usable_pg(self):
self.database.execute_sql('drop table if exists foo')
self.database.execute_sql('create table foo (data text not null)')
self.assertTrue(self.database.is_connection_usable())
with self.assertRaises(IntegrityError):
self.database.execute_sql('insert into foo (data) values (NULL)')
self.assertFalse(self.database.is_closed())
self.assertFalse(self.database.is_connection_usable())
self.database.rollback()
self.assertTrue(self.database.is_connection_usable())
curs = self.database.execute_sql('select * from foo')
self.assertEqual(list(curs), [])
self.database.execute_sql('drop table foo')
class TestExceptionWrapper(ModelTestCase):
database = get_in_memory_db()
requires = [User]
def test_exception_wrapper(self):
exc = None
try:
User.create(username=None)
except IntegrityError as e:
exc = e
if exc is None: raise Exception('expected integrity error not raised')
self.assertTrue(exc.orig.__module__ != 'peewee')
class TestModelPropertyHelper(BaseTestCase):
def test_model_property(self):
database = get_in_memory_db()
class M1(database.Model): pass
class M2(database.Model): pass
class CM1(M1): pass
for M in (M1, M2, CM1):
self.assertTrue(M._meta.database is database)
def test_model_property_on_proxy(self):
db = DatabaseProxy()
class M1(db.Model): pass
class M2(db.Model): pass
class CM1(M1): pass
test_db = get_in_memory_db()
db.initialize(test_db)
for M in (M1, M2, CM1):
self.assertEqual(M._meta.database.database, ':memory:')