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from datetime import date, timedelta
from decimal import Decimal
from tests.testcase import BaseTestCase
class LowCardinalityTestCase(BaseTestCase):
required_server_version = (19, 3, 3)
stable_support_version = (19, 9, 2)
def cli_client_kwargs(self):
if self.server_version >= self.stable_support_version:
return {'allow_suspicious_low_cardinality_types': 1}
def test_uint8(self):
with self.create_table('a LowCardinality(UInt8)'):
data = [(x, ) for x in range(255)]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'\n'.join(str(x[0]) for x in data) + '\n'
)
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_int8(self):
with self.create_table('a LowCardinality(Int8)'):
data = [(x - 127, ) for x in range(255)]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'\n'.join(str(x[0]) for x in data) + '\n'
)
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_nullable_int8(self):
with self.create_table('a LowCardinality(Nullable(Int8))'):
data = [(None, ), (-1, ), (0, ), (1, ), (None, )]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(inserted, '\\N\n-1\n0\n1\n\\N\n')
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_date(self):
with self.create_table('a LowCardinality(Date)'):
start = date(1970, 1, 1)
data = [(start + timedelta(x), ) for x in range(300)]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_float(self):
with self.create_table('a LowCardinality(Float)'):
data = [(float(x),) for x in range(300)]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_decimal(self):
with self.create_table('a LowCardinality(Float)'):
data = [(Decimal(x),) for x in range(300)]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_array(self):
with self.create_table('a Array(LowCardinality(Int16))'):
data = [([100, 500], )]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(inserted, '[100,500]\n')
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_empty_array(self):
with self.create_table('a Array(LowCardinality(Int16))'):
data = [([], )]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(inserted, '[]\n')
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_string(self):
with self.create_table('a LowCardinality(String)'):
data = [
('test', ), ('low', ), ('cardinality', ),
('test', ), ('test', ), ('', )
]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'test\nlow\ncardinality\ntest\ntest\n\n'
)
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_fixed_string(self):
with self.create_table('a LowCardinality(FixedString(12))'):
data = [
('test', ), ('low', ), ('cardinality', ),
('test', ), ('test', ), ('', )
]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'test\\0\\0\\0\\0\\0\\0\\0\\0\n'
'low\\0\\0\\0\\0\\0\\0\\0\\0\\0\n'
'cardinality\\0\n'
'test\\0\\0\\0\\0\\0\\0\\0\\0\n'
'test\\0\\0\\0\\0\\0\\0\\0\\0\n'
'\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\n'
)
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
def test_nullable_string(self):
with self.create_table('a LowCardinality(Nullable(String))'):
data = [
('test', ), ('', ), (None, )
]
self.client.execute('INSERT INTO test (a) VALUES', data)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'test\n\n\\N\n'
)
inserted = self.client.execute(query)
self.assertEqual(inserted, data)
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