/usr/lib/python2.7/test/test_dis.py is in libpython2.7-testsuite 2.7.15~rc1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | # Minimal tests for dis module
from test.test_support import run_unittest
import unittest
import sys
import dis
import StringIO
def _f(a):
print a
return 1
dis_f = """\
%3d 0 LOAD_FAST 0 (a)
3 PRINT_ITEM
4 PRINT_NEWLINE
%3d 5 LOAD_CONST 1 (1)
8 RETURN_VALUE
"""%(_f.func_code.co_firstlineno + 1,
_f.func_code.co_firstlineno + 2)
def bug708901():
for res in range(1,
10):
pass
dis_bug708901 = """\
%3d 0 SETUP_LOOP 23 (to 26)
3 LOAD_GLOBAL 0 (range)
6 LOAD_CONST 1 (1)
%3d 9 LOAD_CONST 2 (10)
12 CALL_FUNCTION 2
15 GET_ITER
>> 16 FOR_ITER 6 (to 25)
19 STORE_FAST 0 (res)
%3d 22 JUMP_ABSOLUTE 16
>> 25 POP_BLOCK
>> 26 LOAD_CONST 0 (None)
29 RETURN_VALUE
"""%(bug708901.func_code.co_firstlineno + 1,
bug708901.func_code.co_firstlineno + 2,
bug708901.func_code.co_firstlineno + 3)
def bug1333982(x=[]):
assert 0, ([s for s in x] +
1)
pass
dis_bug1333982 = """\
%3d 0 LOAD_CONST 1 (0)
3 POP_JUMP_IF_TRUE 41
6 LOAD_GLOBAL 0 (AssertionError)
9 BUILD_LIST 0
12 LOAD_FAST 0 (x)
15 GET_ITER
>> 16 FOR_ITER 12 (to 31)
19 STORE_FAST 1 (s)
22 LOAD_FAST 1 (s)
25 LIST_APPEND 2
28 JUMP_ABSOLUTE 16
%3d >> 31 LOAD_CONST 2 (1)
34 BINARY_ADD
35 CALL_FUNCTION 1
38 RAISE_VARARGS 1
%3d >> 41 LOAD_CONST 0 (None)
44 RETURN_VALUE
"""%(bug1333982.func_code.co_firstlineno + 1,
bug1333982.func_code.co_firstlineno + 2,
bug1333982.func_code.co_firstlineno + 3)
_BIG_LINENO_FORMAT = """\
%3d 0 LOAD_GLOBAL 0 (spam)
3 POP_TOP
4 LOAD_CONST 0 (None)
7 RETURN_VALUE
"""
class DisTests(unittest.TestCase):
def do_disassembly_test(self, func, expected):
s = StringIO.StringIO()
save_stdout = sys.stdout
sys.stdout = s
dis.dis(func)
sys.stdout = save_stdout
got = s.getvalue()
# Trim trailing blanks (if any).
lines = got.split('\n')
lines = [line.rstrip() for line in lines]
expected = expected.split("\n")
import difflib
if expected != lines:
self.fail(
"events did not match expectation:\n" +
"\n".join(difflib.ndiff(expected,
lines)))
def test_opmap(self):
self.assertEqual(dis.opmap["STOP_CODE"], 0)
self.assertIn(dis.opmap["LOAD_CONST"], dis.hasconst)
self.assertIn(dis.opmap["STORE_NAME"], dis.hasname)
def test_opname(self):
self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
def test_boundaries(self):
self.assertEqual(dis.opmap["EXTENDED_ARG"], dis.EXTENDED_ARG)
self.assertEqual(dis.opmap["STORE_NAME"], dis.HAVE_ARGUMENT)
def test_dis(self):
self.do_disassembly_test(_f, dis_f)
def test_bug_708901(self):
self.do_disassembly_test(bug708901, dis_bug708901)
def test_bug_1333982(self):
# This one is checking bytecodes generated for an `assert` statement,
# so fails if the tests are run with -O. Skip this test then.
if __debug__:
self.do_disassembly_test(bug1333982, dis_bug1333982)
else:
self.skipTest('need asserts, run without -O')
def test_big_linenos(self):
def func(count):
namespace = {}
func = "def foo():\n " + "".join(["\n "] * count + ["spam\n"])
exec func in namespace
return namespace['foo']
# Test all small ranges
for i in xrange(1, 300):
expected = _BIG_LINENO_FORMAT % (i + 2)
self.do_disassembly_test(func(i), expected)
# Test some larger ranges too
for i in xrange(300, 5000, 10):
expected = _BIG_LINENO_FORMAT % (i + 2)
self.do_disassembly_test(func(i), expected)
def test_main():
run_unittest(DisTests)
if __name__ == "__main__":
test_main()
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