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https://github.com/Infinidat/infi.clickhouse_orm.git
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127 lines
4.8 KiB
Python
127 lines
4.8 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import unittest
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from decimal import Decimal
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from infi.clickhouse_orm.database import Database, ServerError
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from infi.clickhouse_orm.models import Model
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from infi.clickhouse_orm.fields import *
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from infi.clickhouse_orm.engines import *
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class DecimalFieldsTest(unittest.TestCase):
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def setUp(self):
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self.database = Database('test-db', log_statements=True)
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self.database.add_setting('allow_experimental_decimal_type', 1)
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try:
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self.database.create_table(DecimalModel)
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except ServerError as e:
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if 'Unknown setting' in e.message:
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# This ClickHouse version does not support decimals yet
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raise unittest.SkipTest(e.message)
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else:
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raise
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def tearDown(self):
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self.database.drop_database()
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def _insert_sample_data(self):
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self.database.insert([
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DecimalModel(date_field='2016-08-20'),
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DecimalModel(date_field='2016-08-21', dec=Decimal('1.234')),
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DecimalModel(date_field='2016-08-22', dec32=Decimal('12342.2345')),
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DecimalModel(date_field='2016-08-23', dec64=Decimal('12342.23456')),
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DecimalModel(date_field='2016-08-24', dec128=Decimal('-4545456612342.234567')),
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])
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def _assert_sample_data(self, results):
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self.assertEqual(len(results), 5)
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self.assertEqual(results[0].dec, Decimal(0))
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self.assertEqual(results[0].dec32, Decimal(17))
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self.assertEqual(results[1].dec, Decimal('1.234'))
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self.assertEqual(results[2].dec32, Decimal('12342.2345'))
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self.assertEqual(results[3].dec64, Decimal('12342.23456'))
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self.assertEqual(results[4].dec128, Decimal('-4545456612342.234567'))
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def test_insert_and_select(self):
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self._insert_sample_data()
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query = 'SELECT * from $table ORDER BY date_field'
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results = list(self.database.select(query, DecimalModel))
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self._assert_sample_data(results)
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def test_ad_hoc_model(self):
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self._insert_sample_data()
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query = 'SELECT * from decimalmodel ORDER BY date_field'
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results = list(self.database.select(query))
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self._assert_sample_data(results)
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def test_rounding(self):
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d = Decimal('11111.2340000000000000001')
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self.database.insert([DecimalModel(date_field='2016-08-20', dec=d, dec32=d, dec64=d, dec128=d)])
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m = DecimalModel.objects_in(self.database)[0]
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for val in (m.dec, m.dec32, m.dec64, m.dec128):
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self.assertEqual(val, Decimal('11111.234'))
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def test_assignment_ok(self):
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for value in (True, False, 17, 3.14, '20.5', Decimal('20.5')):
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DecimalModel(dec=value)
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def test_assignment_error(self):
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for value in ('abc', u'זה ארוך', None, float('NaN'), Decimal('-Infinity')):
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with self.assertRaises(ValueError):
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DecimalModel(dec=value)
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def test_aggregation(self):
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self._insert_sample_data()
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result = DecimalModel.objects_in(self.database).aggregate(m='min(dec)', n='max(dec)')
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self.assertEqual(result[0].m, Decimal(0))
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self.assertEqual(result[0].n, Decimal('1.234'))
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def test_precision_and_scale(self):
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# Go over all valid combinations
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for precision in range(1, 39):
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for scale in range(0, precision + 1):
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f = DecimalField(precision, scale)
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# Some invalid combinations
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for precision, scale in [(0, 0), (-1, 7), (7, -1), (39, 5), (20, 21)]:
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with self.assertRaises(AssertionError):
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f = DecimalField(precision, scale)
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def test_min_max(self):
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# In range
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f = DecimalField(3, 1)
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f.validate(f.to_python('99.9', None))
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f.validate(f.to_python('-99.9', None))
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# In range after rounding
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f.validate(f.to_python('99.94', None))
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f.validate(f.to_python('-99.94', None))
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# Out of range
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with self.assertRaises(ValueError):
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f.validate(f.to_python('99.99', None))
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with self.assertRaises(ValueError):
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f.validate(f.to_python('-99.99', None))
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# In range
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f = Decimal32Field(4)
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f.validate(f.to_python('99999.9999', None))
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f.validate(f.to_python('-99999.9999', None))
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# In range after rounding
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f.validate(f.to_python('99999.99994', None))
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f.validate(f.to_python('-99999.99994', None))
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# Out of range
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with self.assertRaises(ValueError):
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f.validate(f.to_python('100000', None))
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with self.assertRaises(ValueError):
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f.validate(f.to_python('-100000', None))
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class DecimalModel(Model):
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date_field = DateField()
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dec = DecimalField(15, 3)
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dec32 = Decimal32Field(4, default=17)
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dec64 = Decimal64Field(5)
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dec128 = Decimal128Field(6)
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engine = Memory()
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