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#!/usr/bin/env python
# Licensed under a 3-clause BSD style license, see LICENSE.
"""
Tests for the hepunits.units.units module.
"""
from pytest import approx
from hepunits import *
from hepunits import two_pi
def test_length():
assert 3 * mm == approx(m * 0.003)
assert 3 * mm == approx(cm * 0.3)
assert 3 * mm == approx(km * 0.000003)
assert 3 * mm == approx(micrometer * 3000)
assert 3 * mm == approx(nanometer * 3000000)
assert 3 * mm == approx(angstrom * 30000000)
assert 3 * mm == approx(fermi * 3e12)
def test_area():
assert (3 * mm) ** 2 == approx(9 * mm2)
assert (3 * cm) ** 2 == approx(9 * cm2)
assert (3 * km) ** 2 == approx(9 * km2)
assert 2e-28 * meter2 == approx(2 * barn)
def test_crosssection():
assert 3e-31 * barn == approx(9 * millibarn)
assert 3e-34 * barn == approx(9 * microbarn)
assert 3e-37 * barn == approx(9 * nanobarn)
assert 3e-40 * barn == approx(9 * picobarn)
assert 1 * barn == approx(100 * fm2)
def test_luminosity():
assert invpb / invfb == approx(1.0e-3)
def test_volume():
assert (3 * mm) ** 3 == approx(27 * mm3)
assert (3 * cm) ** 3 == approx(27 * cm3)
assert (3 * m) ** 3 == approx(27 * m3)
def test_time():
assert 3 * ns == approx(3e-9 * s)
assert 3 * ns == approx(3e-6 * ms)
assert 3 * ns == approx(3e-3 * microsecond)
assert 3 * ns == approx(3000 * picosecond)
assert 3 * ns == approx(3000000 * femtosecond)
assert day == 24 * 60 * minute
def test_frequency():
assert second**-1 == approx(Hz)
assert 1000 * hertz == approx(kHz)
assert 1000000 * hertz == approx(MHz)
assert 1000000000 * hertz == approx(GHz)
def test_energy():
assert 1e3 * eV == approx(keV)
assert 1e6 * eV == approx(MeV)
assert 1e9 * eV == approx(GeV)
assert 1e12 * eV == approx(TeV)
assert 1e15 * eV == approx(PeV)
assert 1e18 * eV == approx(EeV)
def test_angle():
assert 360.0 * degree == two_pi * radian
def test_magnetic_field():
assert 10 * gauss == approx(1 * milli * tesla)
def test_electricity():
assert 1 * mega * joule / second == approx(1 * MW)
def test_radiation_units():
assert gray == sievert # equal in terms of value
assert 1 * curie == 37 * giga * becquerel
def test_magnetic_flux():
assert weber == tesla * meter2
assert weber == ohm * coulomb
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