Method test_jump_threading

Lib/test/test_patma.py:3390–3406

(self)

class TestSourceLocations(unittest.TestCase):
    def test_jump_threading(self):
        # See gh-123048
        def f():
            x = 0
            v = 1
            match v:
                case 1:
                    if x < 0:
                        x = 1
                case 2:
                    if x < 0:
                        x = 1
            x += 1

        for inst in dis.get_instructions(f):
            if inst.opcode in dis.hasjump:
                self.assertIsNotNone(inst.positions.lineno, "jump without location")

class TestTracing(unittest.TestCase):