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# -*- coding: utf-8 -*-
from .base import MeasurementTestBase
from measurement.measures import Distance, Area
class DistanceTest(MeasurementTestBase):
def test_conversion_equivalence(self):
miles = Distance(mi=1)
kilometers = Distance(km=1.609344)
self.assertAlmostEqual(
miles.km,
kilometers.km
)
def test_attrib_conversion(self):
kilometers = Distance(km=1)
expected_meters = 1000
self.assertAlmostEqual(
kilometers.m,
expected_meters
)
def test_identity_conversion(self):
expected_miles = 10
miles = Distance(mi=expected_miles)
self.assertAlmostEqual(
miles.mi,
expected_miles
)
def test_auto_si_kwargs(self):
meters = Distance(meter=1e6)
megameters = Distance(megameter=1)
self.assertEqual(
meters,
megameters,
)
def test_auto_si_attrs(self):
one_meter = Distance(m=1)
micrometers = one_meter.um
self.assertEqual(
one_meter.value * 10**6,
micrometers
)
def test_area_sq_km(self):
one_sq_km = Area(sq_km=10)
miles_sqd = Area(sq_mi=3.8610216)
self.assertAlmostEqual(
one_sq_km.standard,
miles_sqd.standard,
places=1
)
def test_set_value(self):
distance = Distance(mi=10)
expected_standard = 16093.44
self.assertEqual(
distance.standard,
expected_standard,
)
distance.value = 11
expected_standard = 17702.784
self.assertEqual(
distance.standard,
expected_standard
)
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