def test_textile(self):
ureg = self.ureg
qty_direct = 1.331 * ureg.tex
with self.assertRaises(DimensionalityError):
qty_indirect = qty_direct.to("Nm")
with ureg.context("textile"):
from pint.util import find_shortest_path
qty_indirect = qty_direct.to("Nm")
a = qty_direct.to_base_units()
b = qty_indirect.to_base_units()
da, db = Context.__keytransform__(a.dimensionality,
b.dimensionality)
p = find_shortest_path(ureg._active_ctx.graph, da, db)
self.assertTrue(p)
msg = "{} <-> {}".format(a, b)
self.assertQuantityAlmostEqual(b, a, rtol=0.01, msg=msg)
# Check RKM <-> cN/tex conversion
self.assertQuantityAlmostEqual(1 * ureg.RKM,
0.980665 * ureg.cN / ureg.tex)
self.assertQuantityAlmostEqual((1 / 0.980665) * ureg.RKM,
1 * ureg.cN / ureg.tex)
self.assertAlmostEqual((1 * ureg.RKM).to(ureg.cN / ureg.tex).m,
0.980665)
self.assertAlmostEqual((1 * ureg.cN / ureg.tex).to(ureg.RKM).m,
1 / 0.980665)
def test_textile(self):
ureg = self.ureg
qty_direct = 1.331 * ureg.tex
with pytest.raises(DimensionalityError):
qty_indirect = qty_direct.to("Nm")
with ureg.context("textile"):
from pint.util import find_shortest_path
qty_indirect = qty_direct.to("Nm")
a = qty_direct.to_base_units()
b = qty_indirect.to_base_units()
da, db = Context.__keytransform__(a.dimensionality,
b.dimensionality)
p = find_shortest_path(ureg._active_ctx.graph, da, db)
assert p
msg = "{} <-> {}".format(a, b)
helpers.assert_quantity_almost_equal(b, a, rtol=0.01, msg=msg)
# Check RKM <-> cN/tex conversion
helpers.assert_quantity_almost_equal(1 * ureg.RKM,
0.980665 * ureg.cN / ureg.tex)
helpers.assert_quantity_almost_equal((1 / 0.980665) * ureg.RKM,
1 * ureg.cN / ureg.tex)
assert (round(
abs((1 * ureg.RKM).to(ureg.cN / ureg.tex).m - 0.980665),
7) == 0)
assert (round(
abs((1 * ureg.cN / ureg.tex).to(ureg.RKM).m - 1 / 0.980665),
7) == 0)
def test_spectroscopy(self):
ureg = self.ureg
eq = (532.0 * ureg.nm, 563.5 * ureg.terahertz, 2.33053 * ureg.eV)
with ureg.context("sp"):
from pint.util import find_shortest_path
for a, b in itertools.product(eq, eq):
for x in range(2):
if x == 1:
a = a.to_base_units()
b = b.to_base_units()
da, db = Context.__keytransform__(a.dimensionality,
b.dimensionality)
p = find_shortest_path(ureg._active_ctx.graph, da, db)
assert p
msg = "{} <-> {}".format(a, b)
# assertAlmostEqualRelError converts second to first
helpers.assert_quantity_almost_equal(b,
a,
rtol=0.01,
msg=msg)
for a, b in itertools.product(eq, eq):
helpers.assert_quantity_almost_equal(a.to(b.units, "sp"),
b,
rtol=0.01)
def test_shortest_path(self):
g = collections.defaultdict(list)
g[1] = {
2,
}
g[2] = {
3,
}
p = find_shortest_path(g, 1, 2)
self.assertEqual(p, [1, 2])
p = find_shortest_path(g, 1, 3)
self.assertEqual(p, [1, 2, 3])
p = find_shortest_path(g, 3, 1)
self.assertIs(p, None)
g = collections.defaultdict(list)
g[1] = {
2,
}
g[2] = {3, 1}
g[3] = {
2,
}
p = find_shortest_path(g, 1, 2)
self.assertEqual(p, [1, 2])
p = find_shortest_path(g, 1, 3)
self.assertEqual(p, [1, 2, 3])
p = find_shortest_path(g, 3, 1)
self.assertEqual(p, [3, 2, 1])
p = find_shortest_path(g, 2, 1)
self.assertEqual(p, [2, 1])
def test_textile(self):
ureg = self.ureg
qty_direct = 1.331 * ureg.tex
with self.assertRaises(errors.DimensionalityError):
qty_indirect = qty_direct.to('Nm')
with ureg.context('textile'):
from pint.util import find_shortest_path
qty_indirect = qty_direct.to('Nm')
a = qty_direct.to_base_units()
b = qty_indirect.to_base_units()
da, db = Context.__keytransform__(a.dimensionality,
b.dimensionality)
p = find_shortest_path(ureg._active_ctx.graph, da, db)
self.assertTrue(p)
msg = '{} <-> {}'.format(a, b)
self.assertQuantityAlmostEqual(b, a, rtol=0.01, msg=msg)
def test_spectroscopy(self):
ureg = self.ureg
eq = (532.0 * ureg.nm, 563.5 * ureg.terahertz, 2.33053 * ureg.eV)
with ureg.context("sp"):
from pint.util import find_shortest_path
for a, b in itertools.product(eq, eq):
for x in range(2):
if x == 1:
a = a.to_base_units()
b = b.to_base_units()
da, db = Context.__keytransform__(a.dimensionality, b.dimensionality)
p = find_shortest_path(ureg._active_ctx.graph, da, db)
self.assertTrue(p)
msg = "{0} <-> {1}".format(a, b)
# assertAlmostEqualRelError converts second to first
self.assertQuantityAlmostEqual(b, a, rtol=0.01, msg=msg)
for a, b in itertools.product(eq, eq):
self.assertQuantityAlmostEqual(a.to(b.units, "sp"), b, rtol=0.01)
def test_spectroscopy(self):
ureg = self.ureg
eq = (532. * ureg.nm, 563.5 * ureg.terahertz, 2.33053 * ureg.eV)
with ureg.context('sp'):
from pint.util import find_shortest_path
for a, b in itertools.product(eq, eq):
for x in range(2):
if x == 1:
a = a.to_base_units()
b = b.to_base_units()
da, db = Context.__keytransform__(a.dimensionality,
b.dimensionality)
p = find_shortest_path(ureg._active_ctx.graph, da, db)
self.assertTrue(p)
msg = '{} <-> {}'.format(a, b)
# assertAlmostEqualRelError converts second to first
self.assertAlmostEqualRelError(b, a, rel=.01, msg=msg)
for a, b in itertools.product(eq, eq):
self.assertAlmostEqualRelError(a.to(b.units, 'sp'),
b,
rel=.01,
msg=msg)
def test_shortest_path(self):
g = collections.defaultdict(list)
g[1] = {2,}
g[2] = {3,}
p = find_shortest_path(g, 1, 2)
self.assertEqual(p, [1, 2])
p = find_shortest_path(g, 1, 3)
self.assertEqual(p, [1, 2, 3])
p = find_shortest_path(g, 3, 1)
self.assertIs(p, None)
g = collections.defaultdict(list)
g[1] = {2,}
g[2] = {3, 1}
g[3] = {2, }
p = find_shortest_path(g, 1, 2)
self.assertEqual(p, [1, 2])
p = find_shortest_path(g, 1, 3)
self.assertEqual(p, [1, 2, 3])
p = find_shortest_path(g, 3, 1)
self.assertEqual(p, [3, 2, 1])
p = find_shortest_path(g, 2, 1)
self.assertEqual(p, [2, 1])
def test_shortest_path(self):
g = collections.defaultdict(set)
g[1] = {2}
g[2] = {3}
p = find_shortest_path(g, 1, 2)
assert p == [1, 2]
p = find_shortest_path(g, 1, 3)
assert p == [1, 2, 3]
p = find_shortest_path(g, 3, 1)
assert p is None
g = collections.defaultdict(set)
g[1] = {2}
g[2] = {3, 1}
g[3] = {2}
p = find_shortest_path(g, 1, 2)
assert p == [1, 2]
p = find_shortest_path(g, 1, 3)
assert p == [1, 2, 3]
p = find_shortest_path(g, 3, 1)
assert p == [3, 2, 1]
p = find_shortest_path(g, 2, 1)
assert p == [2, 1]
