# -*- coding: utf-8 -*-
# Copyright (c) 2015-2016, Exa Analytics Development Team
# Distributed under the terms of the Apache License 2.0
'''
Tests for :mod:`~exa.relational.unit`
========================================
Test availablility of unit conversions.
'''
import numpy as np
import pandas as pd
from exa.test import UnitTester
from exa.relational import Acceleration, Length
[docs]class TestUnit(UnitTester):
'''
Check unit conversion tables.
'''
[docs] def test_table(self):
'''
Check that the table can be converted to a :class:`~pandas.DataFrame`.
'''
tbl = Acceleration.to_frame()
self.assertIsInstance(tbl, pd.DataFrame)
[docs] def test_factor(self):
'''
Ensure that conversion factors can be selected from the tables.
'''
self.assertTrue(np.isclose(Length['au', 'A'], 0.529, atol=10**-3))