def test_issue_263():
i = Interprete(verbose=VERBOSE)
i.evaluer("A = mat([[1;2];[3;4]])")
i.evaluer("B = mat(2)")
i.evaluer("C = A*B")
assert 'C' in i.vars
r, l = i.evaluer("C")
assertEqual(r, "Matrix([\n[1 ; 2] ; \n[3 ; 4]])")
etat_interne = i.save_state()
i.clear_state()
assert 'C' not in i.vars
i.load_state(etat_interne)
assert 'C' in i.vars
r, l = i.evaluer("C")
assertEqual(r, "Matrix([\n[1 ; 2] ; \n[3 ; 4]])")
i.evaluer("A=[[0,1 ; 0,8]; [0,5; 0,5]]")
r, l = i.evaluer("[[0,3 ; 0,4]]*A")
assertEqual(r, "Matrix([[0,23 ; 0,44]])")
# ou encore [0,23 ; 0,44]
assertEqual(l, r"$\begin{pmatrix}0,23 & 0,44\end{pmatrix}$")
