def test_states():
assert PIABKet(n).dual_class() == PIABBra
assert PIABKet(n).hilbert_space ==\
L2(Interval(S.NegativeInfinity,S.Infinity))
assert represent(PIABKet(n)) == sqrt(2 / L) * sin(n * pi * x / L)
assert (PIABBra(i) * PIABKet(j)).doit() == KroneckerDelta(i, j)
assert PIABBra(n).dual_class() == PIABKet
def test_sympy__physics__quantum__piab__PIABBra():
from sympy.physics.quantum.piab import PIABBra
assert _test_args(PIABBra('B'))