def test_get_original(self):
q1 = Quantity(10, units="m", family_name="depth")
q2 = q1.change_unit_system("IMPERIAL")
q3 = q1.change_unit_system("METRIC")
self.assertEqual(q1, q1.get_original(), "Original quantity's get_original method failed to return self.")
self.assertEqual(q1, q2.get_original(), "First child get_original failed to return original.")
self.assertEqual(q1, q3.get_original(), "Second child get_original failed to return original.")
return
def test_get_original(self):
q1 = Quantity(10, units='m', family_name='depth')
q2 = q1.change_unit_system('IMPERIAL')
q3 = q1.change_unit_system('METRIC')
self.assertEqual(q1, q1.get_original(),
"Original quantity's get_original method failed to return self.")
self.assertEqual(q1, q2.get_original(),
"First child get_original failed to return original.")
self.assertEqual(q1, q3.get_original(),
"Second child get_original failed to return original.")
return
def test_propagation(self):
""" Tests data propagation for a single converted quantity. """
q1 = Quantity(10, units="m", family_name="depth")
q2 = q1.change_unit_system("IMPERIAL")
q3 = q1.change_unit_system("METRIC")
q2.data = 2 * q2.data
q2.propagate_data_changes()
self.assertAlmostEqual(20.0, q1.data, 1, "Propagation test expected data 20, got %s" % str(q1.data))
q3.data = 3 * q3.data
q3.propagate_data_changes()
self.assertAlmostEqual(30.0, q1.data, 1, "Propagation test expected data 30, got %s" % str(q1.data))
return
def test_propagation(self):
""" Tests data propagation for a single converted quantity. """
q1 = Quantity(10, units='m', family_name='depth')
q2 = q1.change_unit_system('IMPERIAL')
q3 = q1.change_unit_system('METRIC')
q2.data = 2 * q2.data
q2.propagate_data_changes()
self.assertAlmostEqual(20., q1.data, 1,
"Propagation test expected data 20, got %s" % str(q1.data))
q3.data = 3 * q3.data
q3.propagate_data_changes()
self.assertAlmostEqual(30., q1.data, 1,
"Propagation test expected data 30, got %s" % str(q1.data))
return
def test_conversion_tracks_parents(self):
""" Test that a _converted_from traits is set appropriately.
Quantity converted from another quantity via change_unit_system has
the _converted_from trait set appropriately.
"""
metric_system = unit_manager.get_unit_system("METRIC")
metric_depth = metric_system.units("depth")
q1 = Quantity(32, units="m", family_name="depth")
q2 = q1.change_unit_system("IMPERIAL")
q3 = q2.change_unit_system("METRIC")
self.assertEqual(q1, q2._converted_from, "Conversion failed to track conversion parent.")
self.assertEqual(q2, q3._converted_from, "Conversion failed to track conversion parent.")
return
def test_conversion_tracks_parents(self):
""" Test that a _converted_from traits is set appropriately.
Quantity converted from another quantity via change_unit_system has
the _converted_from trait set appropriately.
"""
metric_system = unit_manager.get_unit_system('METRIC')
metric_depth = metric_system.units('depth')
q1 = Quantity(32, units='m', family_name='depth')
q2 = q1.change_unit_system('IMPERIAL')
q3 = q2.change_unit_system('METRIC')
self.assertEqual(q1, q2._converted_from,
"Conversion failed to track conversion parent.")
self.assertEqual(q2, q3._converted_from,
"Conversion failed to track conversion parent.")
return