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"""Tests for global UnitRegistry, Unit, and Quantity
"""
import pickle
from pint import (
Measurement,
Quantity,
UndefinedUnitError,
Unit,
UnitRegistry,
get_application_registry,
set_application_registry,
)
from pint.testsuite import BaseTestCase
from pint.testsuite.helpers import requires_uncertainties
from .parameterized import ParameterizedTestMixin
allprotos = ParameterizedTestMixin.parameterize(
("protocol",), [(p,) for p in range(pickle.HIGHEST_PROTOCOL + 1)]
)
class TestDefaultApplicationRegistry(BaseTestCase, ParameterizedTestMixin):
@allprotos
def test_unit(self, protocol):
u = Unit("kg")
self.assertEqual(str(u), "kilogram")
u = pickle.loads(pickle.dumps(u, protocol))
self.assertEqual(str(u), "kilogram")
@allprotos
def test_quantity_1arg(self, protocol):
q = Quantity("123 kg")
self.assertEqual(str(q.units), "kilogram")
self.assertEqual(q.to("t").magnitude, 0.123)
q = pickle.loads(pickle.dumps(q, protocol))
self.assertEqual(str(q.units), "kilogram")
self.assertEqual(q.to("t").magnitude, 0.123)
@allprotos
def test_quantity_2args(self, protocol):
q = Quantity(123, "kg")
self.assertEqual(str(q.units), "kilogram")
self.assertEqual(q.to("t").magnitude, 0.123)
q = pickle.loads(pickle.dumps(q, protocol))
self.assertEqual(str(q.units), "kilogram")
self.assertEqual(q.to("t").magnitude, 0.123)
@requires_uncertainties()
@allprotos
def test_measurement_2args(self, protocol):
m = Measurement(Quantity(123, "kg"), Quantity(15, "kg"))
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 15)
self.assertEqual(str(m.units), "kilogram")
m = pickle.loads(pickle.dumps(m, protocol))
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 15)
self.assertEqual(str(m.units), "kilogram")
@requires_uncertainties()
@allprotos
def test_measurement_3args(self, protocol):
m = Measurement(123, 15, "kg")
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 15)
self.assertEqual(str(m.units), "kilogram")
m = pickle.loads(pickle.dumps(m, protocol))
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 15)
self.assertEqual(str(m.units), "kilogram")
def test_get_application_registry(self):
ureg = get_application_registry()
u = ureg.Unit("kg")
self.assertEqual(str(u), "kilogram")
@allprotos
def test_pickle_crash(self, protocol):
ureg = UnitRegistry(None)
ureg.define("foo = []")
q = ureg.Quantity(123, "foo")
b = pickle.dumps(q, protocol)
self.assertRaises(UndefinedUnitError, pickle.loads, b)
b = pickle.dumps(q.units, protocol)
self.assertRaises(UndefinedUnitError, pickle.loads, b)
@requires_uncertainties()
@allprotos
def test_pickle_crash_measurement(self, protocol):
ureg = UnitRegistry(None)
ureg.define("foo = []")
m = ureg.Quantity(123, "foo").plus_minus(10)
b = pickle.dumps(m, protocol)
self.assertRaises(UndefinedUnitError, pickle.loads, b)
class TestCustomApplicationRegistry(BaseTestCase, ParameterizedTestMixin):
def setUp(self):
super().setUp()
self.ureg_bak = get_application_registry()
self.ureg = UnitRegistry(None)
self.ureg.define("foo = []")
self.ureg.define("bar = foo / 2")
set_application_registry(self.ureg)
assert get_application_registry() is self.ureg
def tearDown(self):
super().tearDown()
set_application_registry(self.ureg_bak)
@allprotos
def test_unit(self, protocol):
u = Unit("foo")
self.assertEqual(str(u), "foo")
u = pickle.loads(pickle.dumps(u, protocol))
self.assertEqual(str(u), "foo")
@allprotos
def test_quantity_1arg(self, protocol):
q = Quantity("123 foo")
self.assertEqual(str(q.units), "foo")
self.assertEqual(q.to("bar").magnitude, 246)
q = pickle.loads(pickle.dumps(q, protocol))
self.assertEqual(str(q.units), "foo")
self.assertEqual(q.to("bar").magnitude, 246)
@allprotos
def test_quantity_2args(self, protocol):
q = Quantity(123, "foo")
self.assertEqual(str(q.units), "foo")
self.assertEqual(q.to("bar").magnitude, 246)
q = pickle.loads(pickle.dumps(q, protocol))
self.assertEqual(str(q.units), "foo")
self.assertEqual(q.to("bar").magnitude, 246)
@requires_uncertainties()
@allprotos
def test_measurement_2args(self, protocol):
m = Measurement(Quantity(123, "foo"), Quantity(10, "bar"))
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 5)
self.assertEqual(str(m.units), "foo")
m = pickle.loads(pickle.dumps(m, protocol))
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 5)
self.assertEqual(str(m.units), "foo")
@requires_uncertainties()
@allprotos
def test_measurement_3args(self, protocol):
m = Measurement(123, 5, "foo")
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 5)
self.assertEqual(str(m.units), "foo")
m = pickle.loads(pickle.dumps(m, protocol))
self.assertEqual(m.value.magnitude, 123)
self.assertEqual(m.error.magnitude, 5)
self.assertEqual(str(m.units), "foo")
class TestSwapApplicationRegistry(BaseTestCase, ParameterizedTestMixin):
"""Test that the constructors of Quantity, Unit, and Measurement capture
the registry that is set as the application registry at creation time
Parameters
----------
Returns
-------
"""
def setUp(self):
super().setUp()
self.ureg_bak = get_application_registry()
self.ureg1 = UnitRegistry(None)
self.ureg1.define("foo = [dim1]")
self.ureg1.define("bar = foo / 2")
self.ureg2 = UnitRegistry(None)
self.ureg2.define("foo = [dim2]")
self.ureg2.define("bar = foo / 3")
def tearDown(self):
set_application_registry(self.ureg_bak)
@allprotos
def test_quantity_1arg(self, protocol):
set_application_registry(self.ureg1)
q1 = Quantity("1 foo")
set_application_registry(self.ureg2)
q2 = Quantity("1 foo")
q3 = pickle.loads(pickle.dumps(q1, protocol))
assert q1.dimensionality == {"[dim1]": 1}
assert q2.dimensionality == {"[dim2]": 1}
assert q3.dimensionality == {"[dim2]": 1}
assert q1.to("bar").magnitude == 2
assert q2.to("bar").magnitude == 3
assert q3.to("bar").magnitude == 3
@allprotos
def test_quantity_2args(self, protocol):
set_application_registry(self.ureg1)
q1 = Quantity(1, "foo")
set_application_registry(self.ureg2)
q2 = Quantity(1, "foo")
q3 = pickle.loads(pickle.dumps(q1, protocol))
assert q1.dimensionality == {"[dim1]": 1}
assert q2.dimensionality == {"[dim2]": 1}
assert q3.dimensionality == {"[dim2]": 1}
assert q1.to("bar").magnitude == 2
assert q2.to("bar").magnitude == 3
assert q3.to("bar").magnitude == 3
@allprotos
def test_unit(self, protocol):
set_application_registry(self.ureg1)
u1 = Unit("bar")
set_application_registry(self.ureg2)
u2 = Unit("bar")
u3 = pickle.loads(pickle.dumps(u1, protocol))
assert u1.dimensionality == {"[dim1]": 1}
assert u2.dimensionality == {"[dim2]": 1}
assert u3.dimensionality == {"[dim2]": 1}
@requires_uncertainties()
@allprotos
def test_measurement_2args(self, protocol):
set_application_registry(self.ureg1)
m1 = Measurement(Quantity(10, "foo"), Quantity(1, "foo"))
set_application_registry(self.ureg2)
m2 = Measurement(Quantity(10, "foo"), Quantity(1, "foo"))
m3 = pickle.loads(pickle.dumps(m1, protocol))
assert m1.dimensionality == {"[dim1]": 1}
assert m2.dimensionality == {"[dim2]": 1}
assert m3.dimensionality == {"[dim2]": 1}
self.assertEqual(m1.to("bar").value.magnitude, 20)
self.assertEqual(m2.to("bar").value.magnitude, 30)
self.assertEqual(m3.to("bar").value.magnitude, 30)
self.assertEqual(m1.to("bar").error.magnitude, 2)
self.assertEqual(m2.to("bar").error.magnitude, 3)
self.assertEqual(m3.to("bar").error.magnitude, 3)
@requires_uncertainties()
@allprotos
def test_measurement_3args(self, protocol):
set_application_registry(self.ureg1)
m1 = Measurement(10, 1, "foo")
set_application_registry(self.ureg2)
m2 = Measurement(10, 1, "foo")
m3 = pickle.loads(pickle.dumps(m1, protocol))
assert m1.dimensionality == {"[dim1]": 1}
assert m2.dimensionality == {"[dim2]": 1}
self.assertEqual(m1.to("bar").value.magnitude, 20)
self.assertEqual(m2.to("bar").value.magnitude, 30)
self.assertEqual(m3.to("bar").value.magnitude, 30)
self.assertEqual(m1.to("bar").error.magnitude, 2)
self.assertEqual(m2.to("bar").error.magnitude, 3)
self.assertEqual(m3.to("bar").error.magnitude, 3)
|
