File tests.py of Package python-numericalunits

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File tests.py of Package python-numericalunits (Revision cb21f5cdd79cdc61ebcc4ebc7a2eeeb4)

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# -*- coding: utf-8 -*-
"""
very basic tests on numericalunits
"""
import unittest
import numericalunits as nu

class TestStuff(unittest.TestCase):

def setUp(self):
        pass

def assert_almost_equal(self, a, b, rtol):
        """helper function to check if two floats are approximately equal,
        allowing for rounding errors etc. Similar to math.isclose in py3."""
        self.assertTrue(abs(a-b) <= rtol * (abs(a) + abs(b)))

def test_everything(self):
        """just some very basic smoke tests"""
        # example from README
        x = 5 * nu.mL
        self.assert_almost_equal(x, 5e21 * nu.nm**3, rtol=1e-9)

# example from README
        Efield = 1e5 * (nu.V / nu.cm)
        force = nu.e * Efield
        accel = force / nu.me
        self.assert_almost_equal(accel, 1.75882002e18 * nu.m / nu.s**2, rtol=1e-6)

# make sure reset_units('SI') works
        nu.reset_units('SI')
        self.assert_almost_equal(nu.G, 1e-4, rtol=1e-9)

if __name__ == '__main__':
    unittest.main()

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File tests.py of Package python-numericalunits (Revision cb21f5cdd79cdc61ebcc4ebc7a2eeeb4)

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