def test_collect_shared_vars():
from lasagne.utils import collect_shared_vars as collect
x, y, z = (theano.shared(0, name=n) for n in 'xyz')
# collecting must not change the order
assert collect([x, y, z]) == [x, y, z]
# duplicates should be eliminated
assert collect([x, y, x, y, y, z]) == [x, y, z]
# ensure we have left-recursive depth-first search
assert collect((x + y) + z) == [x, y, z]
assert collect(x + (y + z)) == [x, y, z]
# complex expressions and constants should not be included
assert collect([x**2, y * z * np.ones(10), x + T.matrix()]) == [x, y, z]
# the result can even be empty
assert collect([T.matrix() + T.matrix(), T.log(T.matrix())]) == []
def test_collect_shared_vars():
from lasagne.utils import collect_shared_vars as collect
x, y, z = (theano.shared(0, name=n) for n in 'xyz')
# collecting must not change the order
assert collect([x, y, z]) == [x, y, z]
# duplicates should be eliminated
assert collect([x, y, x, y, y, z]) == [x, y, z]
# ensure we have left-recursive depth-first search
assert collect((x + y) + z) == [x, y, z]
assert collect(x + (y + z)) == [x, y, z]
# complex expressions and constants should not be included
assert collect([x**2, y * z * np.ones(10), x + T.matrix()]) == [x, y, z]
# the result can even be empty
assert collect([T.matrix() + T.matrix(), T.log(T.matrix())]) == []
