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import dis
from test.support import run_unittest, import_module
import unittest
_opcode = import_module("_opcode")
class OpcodeTests(unittest.TestCase):
def test_stack_effect(self):
self.assertEqual(_opcode.stack_effect(dis.opmap['POP_TOP']), -1)
self.assertEqual(_opcode.stack_effect(dis.opmap['DUP_TOP_TWO']), 2)
self.assertEqual(_opcode.stack_effect(dis.opmap['BUILD_SLICE'], 0), -1)
self.assertEqual(_opcode.stack_effect(dis.opmap['BUILD_SLICE'], 1), -1)
self.assertEqual(_opcode.stack_effect(dis.opmap['BUILD_SLICE'], 3), -2)
self.assertRaises(ValueError, _opcode.stack_effect, 30000)
self.assertRaises(ValueError, _opcode.stack_effect, dis.opmap['BUILD_SLICE'])
self.assertRaises(ValueError, _opcode.stack_effect, dis.opmap['POP_TOP'], 0)
def test_main():
run_unittest(OpcodeTests)
if __name__ == "__main__":
test_main()
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