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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for date and time precision helpers."""
from __future__ import unicode_literals
import decimal
import unittest
from dfdatetime import definitions
from dfdatetime import precisions
class DateTimePrecisionHelperTest(unittest.TestCase):
"""Tests for the date time precision helper interface."""
def testCopyMicrosecondsToFractionOfSecond(self):
"""Tests the CopyMicrosecondsToFractionOfSecond function."""
precision_helper = precisions.DateTimePrecisionHelper
with self.assertRaises(NotImplementedError):
precision_helper.CopyMicrosecondsToFractionOfSecond(0)
def testCopyToDateTimeString(self):
"""Tests the CopyToDateTimeString function."""
precision_helper = precisions.DateTimePrecisionHelper
with self.assertRaises(NotImplementedError):
precision_helper.CopyToDateTimeString((2018, 1, 2, 19, 45, 12), 0.5)
class SecondsPrecisionHelperTest(unittest.TestCase):
"""Tests for the seconds precision helper."""
def testCopyMicrosecondsToFractionOfSecond(self):
"""Tests the CopyMicrosecondsToFractionOfSecond function."""
precision_helper = precisions.SecondsPrecisionHelper
fraction_of_second = precision_helper.CopyMicrosecondsToFractionOfSecond(
123456)
self.assertEqual(fraction_of_second, 0.0)
with self.assertRaises(ValueError):
precision_helper.CopyMicrosecondsToFractionOfSecond(-1)
with self.assertRaises(ValueError):
precision_helper.CopyMicrosecondsToFractionOfSecond(1000000)
def testCopyToDateTimeString(self):
"""Tests the CopyToDateTimeString function."""
precision_helper = precisions.SecondsPrecisionHelper
date_time_string = precision_helper.CopyToDateTimeString(
(2018, 1, 2, 19, 45, 12), 0.123456)
self.assertEqual(date_time_string, '2018-01-02 19:45:12')
with self.assertRaises(ValueError):
precision_helper.CopyToDateTimeString((2018, 1, 2, 19, 45, 12), 4.123456)
class MillisecondsPrecisionHelperTest(unittest.TestCase):
"""Tests for the milliseconds precision helper."""
def testCopyMicrosecondsToFractionOfSecond(self):
"""Tests the CopyMicrosecondsToFractionOfSecond function."""
precision_helper = precisions.MillisecondsPrecisionHelper
fraction_of_second = precision_helper.CopyMicrosecondsToFractionOfSecond(
123456)
self.assertEqual(fraction_of_second, decimal.Decimal('0.123'))
with self.assertRaises(ValueError):
precision_helper.CopyMicrosecondsToFractionOfSecond(-1)
with self.assertRaises(ValueError):
precision_helper.CopyMicrosecondsToFractionOfSecond(1000000)
def testCopyToDateTimeString(self):
"""Tests the CopyToDateTimeString function."""
precision_helper = precisions.MillisecondsPrecisionHelper
date_time_string = precision_helper.CopyToDateTimeString(
(2018, 1, 2, 19, 45, 12), 0.123456)
self.assertEqual(date_time_string, '2018-01-02 19:45:12.123')
with self.assertRaises(ValueError):
precision_helper.CopyToDateTimeString((2018, 1, 2, 19, 45, 12), 4.123456)
class MicrosecondsPrecisionHelperTest(unittest.TestCase):
"""Tests for the milliseconds precision helper."""
def testCopyMicrosecondsToFractionOfSecond(self):
"""Tests the CopyMicrosecondsToFractionOfSecond function."""
precision_helper = precisions.MicrosecondsPrecisionHelper
fraction_of_second = precision_helper.CopyMicrosecondsToFractionOfSecond(
123456)
self.assertEqual(fraction_of_second, decimal.Decimal('0.123456'))
with self.assertRaises(ValueError):
precision_helper.CopyMicrosecondsToFractionOfSecond(-1)
with self.assertRaises(ValueError):
precision_helper.CopyMicrosecondsToFractionOfSecond(1000000)
def testCopyToDateTimeString(self):
"""Tests the CopyToDateTimeString function."""
precision_helper = precisions.MicrosecondsPrecisionHelper
date_time_string = precision_helper.CopyToDateTimeString(
(2018, 1, 2, 19, 45, 12), 0.123456)
self.assertEqual(date_time_string, '2018-01-02 19:45:12.123456')
with self.assertRaises(ValueError):
precision_helper.CopyToDateTimeString((2018, 1, 2, 19, 45, 12), 4.123456)
class PrecisionHelperFactoryTest(unittest.TestCase):
"""Tests for the date time precision helper factory."""
def testCreatePrecisionHelper(self):
"""Tests the CreatePrecisionHelper function."""
precision_helper = precisions.PrecisionHelperFactory.CreatePrecisionHelper(
definitions.PRECISION_1_MICROSECOND)
self.assertIsNotNone(precision_helper)
with self.assertRaises(ValueError):
precisions.PrecisionHelperFactory.CreatePrecisionHelper('bogus')
if __name__ == '__main__':
unittest.main()
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