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from parameterized import parameterized
try:
import numpy as np
except ImportError:
np = None
from tests.numpy.testcase import NumpyBaseTestCase
class FloatTestCase(NumpyBaseTestCase):
n = 10
def check_result(self, rv, col_type):
self.assertArraysEqual(rv[0], np.array(range(self.n)))
self.assertEqual(rv[0].dtype, col_type)
def get_query(self, ch_type):
with self.create_table('a {}'.format(ch_type)):
data = [np.array(range(self.n))]
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'
)
return self.client.execute(query, columnar=True)
def test_float32(self):
rv = self.get_query('Float32')
self.check_result(rv, np.float32)
def test_float64(self):
rv = self.get_query('Float64')
self.check_result(rv, np.float64)
def test_fractional_round_trip(self):
with self.create_table('a Float32'):
data = [np.array([0.5, 1.5], dtype=np.float32)]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(inserted, '0.5\n1.5\n')
inserted = self.client.execute(query, columnar=True)
self.assertArraysEqual(inserted[0], data[0])
@parameterized.expand(['Float32', 'Float64'])
def test_nullable(self, float_type):
with self.create_table('a Nullable({})'.format(float_type)):
data = [np.array([np.nan, 0.5, None, 1.5], 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, 'nan\n0.5\n\\N\n1.5\n')
inserted = self.client.execute(query, columnar=True)
self.assertArraysEqual(
inserted[0].astype(str), data[0].astype(str)
)
self.assertEqual(inserted[0].dtype, object)
def test_nan(self):
with self.create_table('a Float32'):
data = [np.array([float('nan'), 0.5], dtype=np.float32)]
self.client.execute(
'INSERT INTO test (a) VALUES', data, columnar=True
)
query = 'SELECT * FROM test'
inserted = self.emit_cli(query)
self.assertEqual(inserted, 'nan\n0.5\n')
inserted = self.client.execute(query, columnar=True)
self.assertArraysEqual(
inserted[0].astype(str), data[0].astype(str)
)
self.assertEqual(inserted[0].dtype, np.float32)
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