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|
try:
import numpy as np
except ImportError:
np = None
try:
import pandas as pd
except ImportError:
pd = None
from tests.numpy.testcase import NumpyBaseTestCase
# from decimal import Decimal
class LowCardinalityTestCase(NumpyBaseTestCase):
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 check_result(self, inserted, data):
self.assertArraysEqual(inserted[0], data[0])
self.assertIsInstance(inserted[0], pd.Categorical)
def test_uint8(self):
with self.create_table('a LowCardinality(UInt8)'):
data = [np.array(range(255))]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'\n'.join(str(x) for x in data[0]) + '\n'
)
inserted = self.client.execute(query, columnar=True)
self.check_result(inserted, data)
def test_int8(self):
with self.create_table('a LowCardinality(Int8)'):
data = [np.array([x - 127 for x in range(255)])]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'\n'.join(str(x) for x in data[0]) + '\n'
)
inserted = self.client.execute(query, columnar=True)
self.check_result(inserted, data)
def test_nullable_int8(self):
with self.create_table('a LowCardinality(Nullable(Int8))'):
data = [np.array([None, -1, 0, 1, None], dtype=object)]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
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, columnar=True)
self.assertArraysEqual(
inserted[0].astype(str),
pd.Categorical(data[0]).astype(str)
)
self.assertIsInstance(inserted[0], pd.Categorical)
def test_date(self):
with self.create_table('a LowCardinality(Date)'):
data = [np.array(list(range(300)), dtype='datetime64[D]')]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.client.execute(query, columnar=True)
self.check_result(inserted, data)
def test_float(self):
with self.create_table('a LowCardinality(Float)'):
data = [np.array([float(x) for x in range(300)])]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.client.execute(query, columnar=True)
self.check_result(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[0])
#
# query = 'SELECT * FROM test'
# inserted = self.client.execute(query)
# self.assertEqual(inserted, data[0])
#
# def test_array(self):
# with self.create_table('a Array(LowCardinality(Int16))'):
# data = [([100, 500], )]
# self.client.execute('INSERT INTO test (a) VALUES', data[0])
#
# query = 'SELECT * FROM test'
# inserted = self.emit_cli(query)
# self.assertEqual(inserted, '[100,500]\n')
#
# inserted = self.client.execute(query)
# self.assertEqual(inserted, data[0])
#
# def test_empty_array(self):
# with self.create_table('a Array(LowCardinality(Int16))'):
# data = [([], )]
# self.client.execute('INSERT INTO test (a) VALUES', data[0])
#
# query = 'SELECT * FROM test'
# inserted = self.emit_cli(query)
# self.assertEqual(inserted, '[]\n')
#
# inserted = self.client.execute(query)
# self.assertEqual(inserted, data[0])
#
def test_string(self):
with self.create_table('a LowCardinality(String)'):
data = [
np.array(['test', 'low', 'cardinality', 'test', 'test', ''])
]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'test\nlow\ncardinality\ntest\ntest\n\n'
)
inserted = self.client.execute(query, columnar=True)
self.check_result(inserted, data)
def test_insert_nan_string_into_non_nullable(self):
with self.create_table('a LowCardinality(String)'):
data = [
np.array(['test', None], dtype=object)
]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'test\n\n'
)
inserted = self.client.execute(query, columnar=True)
self.check_result(inserted, [np.array(['test', ''])])
def test_fixed_string(self):
with self.create_table('a LowCardinality(FixedString(12))'):
data = [
np.array(['test', 'low', 'cardinality', 'test', 'test', ''])
]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
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, columnar=True)
self.check_result(inserted, data)
def test_nullable_string(self):
with self.create_table('a LowCardinality(Nullable(String))'):
data = [
np.array(['test', '', None], dtype=object)
]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(
inserted,
'test\n\n\\N\n'
)
inserted = self.client.execute(query, columnar=True)
self.assertArraysEqual(
inserted[0].astype(str), pd.Categorical(data[0]).astype(str)
)
self.assertIsInstance(inserted[0], pd.Categorical)
|
