def test01():
    __cdbkernel__ = create_scope()
    ex:= 3 A_{m n} B^{m n} + q(x) r s;
    tst=Ex(repr(ex))
    assert(tst==ex)
    print("Test 01 passed")

test01()

def test02():
    __cdbkernel__ = create_scope()
    \psia::LaTeXForm("\psi_{a}").
    \bar{#}::DiracBar.
    ex:= \bar{\psia};
    print(ex._latex_())
    assert(ex._latex_()==r"\bar{\psi_{a}}")
    print("Test 02 passed")

test02()