mirror of https://github.com/python/cpython
140 lines
5.8 KiB
Python
140 lines
5.8 KiB
Python
import dis
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from test.support.import_helper import import_module
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import unittest
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import opcode
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_opcode = import_module("_opcode")
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from _opcode import stack_effect
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class OpListTests(unittest.TestCase):
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def check_bool_function_result(self, func, ops, expected):
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for op in ops:
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if isinstance(op, str):
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op = dis.opmap[op]
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with self.subTest(opcode=op, func=func):
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self.assertIsInstance(func(op), bool)
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self.assertEqual(func(op), expected)
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def test_invalid_opcodes(self):
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invalid = [-100, -1, 512, 513, 1000]
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self.check_bool_function_result(_opcode.is_valid, invalid, False)
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self.check_bool_function_result(_opcode.has_arg, invalid, False)
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self.check_bool_function_result(_opcode.has_const, invalid, False)
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self.check_bool_function_result(_opcode.has_name, invalid, False)
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self.check_bool_function_result(_opcode.has_jump, invalid, False)
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self.check_bool_function_result(_opcode.has_free, invalid, False)
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self.check_bool_function_result(_opcode.has_local, invalid, False)
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self.check_bool_function_result(_opcode.has_exc, invalid, False)
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def test_is_valid(self):
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names = [
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'CACHE',
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'POP_TOP',
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'IMPORT_NAME',
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'JUMP',
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'INSTRUMENTED_RETURN_VALUE',
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]
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opcodes = [dis.opmap[opname] for opname in names]
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self.check_bool_function_result(_opcode.is_valid, opcodes, True)
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def test_oplists(self):
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def check_function(self, func, expected):
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for op in [-10, 520]:
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with self.subTest(opcode=op, func=func):
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res = func(op)
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self.assertIsInstance(res, bool)
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self.assertEqual(res, op in expected)
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check_function(self, _opcode.has_arg, dis.hasarg)
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check_function(self, _opcode.has_const, dis.hasconst)
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check_function(self, _opcode.has_name, dis.hasname)
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check_function(self, _opcode.has_jump, dis.hasjump)
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check_function(self, _opcode.has_free, dis.hasfree)
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check_function(self, _opcode.has_local, dis.haslocal)
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check_function(self, _opcode.has_exc, dis.hasexc)
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class StackEffectTests(unittest.TestCase):
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def test_stack_effect(self):
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self.assertEqual(stack_effect(dis.opmap['POP_TOP']), -1)
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self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 0), -1)
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self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 1), -1)
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self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 3), -2)
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self.assertRaises(ValueError, stack_effect, 30000)
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# All defined opcodes
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has_arg = dis.hasarg
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for name, code in filter(lambda item: item[0] not in dis.deoptmap, dis.opmap.items()):
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if code >= opcode.MIN_INSTRUMENTED_OPCODE:
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continue
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with self.subTest(opname=name):
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stack_effect(code)
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stack_effect(code, 0)
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# All not defined opcodes
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for code in set(range(256)) - set(dis.opmap.values()):
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with self.subTest(opcode=code):
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self.assertRaises(ValueError, stack_effect, code)
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self.assertRaises(ValueError, stack_effect, code, 0)
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def test_stack_effect_jump(self):
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FOR_ITER = dis.opmap['FOR_ITER']
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self.assertEqual(stack_effect(FOR_ITER, 0), 1)
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self.assertEqual(stack_effect(FOR_ITER, 0, jump=True), 1)
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self.assertEqual(stack_effect(FOR_ITER, 0, jump=False), 1)
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JUMP_FORWARD = dis.opmap['JUMP_FORWARD']
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self.assertEqual(stack_effect(JUMP_FORWARD, 0), 0)
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self.assertEqual(stack_effect(JUMP_FORWARD, 0, jump=True), 0)
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self.assertEqual(stack_effect(JUMP_FORWARD, 0, jump=False), 0)
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# All defined opcodes
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has_arg = dis.hasarg
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has_exc = dis.hasexc
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has_jump = dis.hasjabs + dis.hasjrel
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for name, code in filter(lambda item: item[0] not in dis.deoptmap, dis.opmap.items()):
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if code >= opcode.MIN_INSTRUMENTED_OPCODE:
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continue
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with self.subTest(opname=name):
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if code not in has_arg:
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common = stack_effect(code)
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jump = stack_effect(code, jump=True)
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nojump = stack_effect(code, jump=False)
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else:
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common = stack_effect(code, 0)
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jump = stack_effect(code, 0, jump=True)
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nojump = stack_effect(code, 0, jump=False)
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if code in has_jump or code in has_exc:
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self.assertEqual(common, max(jump, nojump))
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else:
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self.assertEqual(jump, common)
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self.assertEqual(nojump, common)
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class SpecializationStatsTests(unittest.TestCase):
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def test_specialization_stats(self):
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stat_names = ["success", "failure", "hit", "deferred", "miss", "deopt"]
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specialized_opcodes = [
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op.lower()
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for op in opcode._specializations
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if opcode._inline_cache_entries.get(op, 0)
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]
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self.assertIn('load_attr', specialized_opcodes)
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self.assertIn('binary_subscr', specialized_opcodes)
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stats = _opcode.get_specialization_stats()
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if stats is not None:
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self.assertIsInstance(stats, dict)
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self.assertCountEqual(stats.keys(), specialized_opcodes)
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self.assertCountEqual(
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stats['load_attr'].keys(),
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stat_names + ['failure_kinds'])
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for sn in stat_names:
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self.assertIsInstance(stats['load_attr'][sn], int)
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self.assertIsInstance(
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stats['load_attr']['failure_kinds'],
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tuple)
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for v in stats['load_attr']['failure_kinds']:
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self.assertIsInstance(v, int)
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if __name__ == "__main__":
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unittest.main()
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