Method check_lnotab

Lib/test/test_peepholer.py:71–83

Check that the lnotab byte offsets are sensible.

(self, code)

                          f'jumps to {tgt.opname} at {tgt.offset}')

    def check_lnotab(self, code):
        "Check that the lnotab byte offsets are sensible."
        code = dis._get_code_object(code)
        lnotab = list(dis.findlinestarts(code))
        # Don't bother checking if the line info is sensible, because
        # most of the line info we can get at comes from lnotab.
        min_bytecode = min(t[0] for t in lnotab)
        max_bytecode = max(t[0] for t in lnotab)
        self.assertGreaterEqual(min_bytecode, 0)
        self.assertLess(max_bytecode, len(code.co_code))
        # This could conceivably test more (and probably should, as there
        # aren't very many tests of lnotab), if peepholer wasn't scheduled
        # to be replaced anyway.

    def test_unot(self):
        # UNARY_NOT POP_JUMP_IF_FALSE  -->  POP_JUMP_IF_TRUE'