self.assertEqual(LinExpr.fromsympy(sp_x), self.x)
self.assertEqual(LinExpr.fromsympy(sympy.Rational(22, 7)), self.pi)
self.assertEqual(LinExpr.fromsympy(sp_x - 2*sp_y + 3), self.expr)
self.assertEqual(LinExpr.fromsympy(sp_x), self.x)
self.assertEqual(LinExpr.fromsympy(sympy.Rational(22, 7)), self.pi)
self.assertEqual(LinExpr.fromsympy(sp_x - 2*sp_y + 3), self.expr)