def test_equivalent():
ijk = CoordinateSystem('ijk')
xyz = CoordinateSystem('xyz')
T = np.random.standard_normal((4,4))
T[-1] = [0,0,0,1]
A = AffineTransform(ijk, xyz, T)
# now, cycle through
# all possible permutations of
# 'ijk' and 'xyz' and confirm that
# the mapping is equivalent
yield assert_false, equivalent(A, A.renamed_domain({'i':'foo'}))
try:
import itertools
for pijk in itertools.permutations('ijk'):
for pxyz in itertools.permutations('xyz'):
B = A.reordered_domain(pijk).reordered_range(pxyz)
yield assert_true, equivalent(A, B)
except (ImportError, AttributeError):
# just do some if we can't find itertools, or if itertools
# doesn't have permutations
for pijk in ['ikj', 'kij']:
for pxyz in ['xzy', 'yxz']:
B = A.reordered_domain(pijk).reordered_range(pxyz)
yield assert_true, equivalent(A, B)
def test_equivalent():
ijk = CoordinateSystem("ijk")
xyz = CoordinateSystem("xyz")
T = np.random.standard_normal((4, 4))
T[-1] = [0, 0, 0, 1]
A = AffineTransform(ijk, xyz, T)
# now, cycle through
# all possible permutations of
# 'ijk' and 'xyz' and confirm that
# the mapping is equivalent
yield assert_false, equivalent(A, A.renamed_domain({"i": "foo"}))
try:
import itertools
for pijk in itertools.permutations("ijk"):
for pxyz in itertools.permutations("xyz"):
B = A.reordered_domain(pijk).reordered_range(pxyz)
yield assert_true, equivalent(A, B)
except ImportError:
# just do some if we can't find itertools
for pijk in ["ikj", "kij"]:
for pxyz in ["xzy", "yxz"]:
B = A.reordered_domain(pijk).reordered_range(pxyz)
yield assert_true, equivalent(A, B)
