it thrown some error like,Cannot create unbalanced journal entry. Ids:
seems like we should call something before

pass check check_move_validity=False in the context

def _recompute_tax_lines(self, recompute_tax_base_amount=False):
def _recompute_dynamic_lines(self, recompute_all_taxes=False,recompute_tax_base_amount=False):

there is no parameter like check_move_validity

its not a parameter, its a marker which has to pass in the context.
with_context(check_move_validity=False)

suppose if you are calling self.action_test(), call it as self.with_context(check_move_validity=False).action_test()