def test_non_frankenAdds():
# the is_commutative property used to fail because of Basic.__new__
# This caused is_commutative and str calls to fail
expr = x+y*2
rebuilt = construct(deconstruct(expr))
# Ensure that we can run these commands without causing an error
str(rebuilt)
rebuilt.is_commutative
def test_nested():
expr = Basic(1, Basic(2), 3)
cmpd = Compound(Basic, (1, Compound(Basic, (2,)), 3))
assert deconstruct(expr) == cmpd
assert construct(cmpd) == expr
def test_construct():
expr = Compound(Basic, (1, 2, 3))
expected = Basic(1, 2, 3)
assert construct(expr) == expected
def test_nested():
expr = Basic(S(1), Basic(S(2)), S(3))
cmpd = Compound(Basic, (1, Compound(Basic, (2, )), 3))
assert deconstruct(expr) == cmpd
assert construct(cmpd) == expr
def test_construct():
expr = Compound(Basic, (1, 2, 3))
expected = Basic(S(1), S(2), S(3))
assert construct(expr) == expected
