Commit | Line | Data |
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86530b38 AT |
1 | from test.test_support import verify, verbose, TestFailed, run_unittest |
2 | import sys | |
3 | import dis | |
4 | import StringIO | |
5 | ||
6 | # Minimal tests for dis module | |
7 | ||
8 | import unittest | |
9 | ||
10 | def _f(a): | |
11 | print a | |
12 | return 1 | |
13 | ||
14 | dis_f = """\ | |
15 | %-4d 0 LOAD_FAST 0 (a) | |
16 | 3 PRINT_ITEM | |
17 | 4 PRINT_NEWLINE | |
18 | ||
19 | %-4d 5 LOAD_CONST 1 (1) | |
20 | 8 RETURN_VALUE | |
21 | """%(_f.func_code.co_firstlineno + 1, | |
22 | _f.func_code.co_firstlineno + 2) | |
23 | ||
24 | ||
25 | def bug708901(): | |
26 | for res in range(1, | |
27 | 10): | |
28 | pass | |
29 | ||
30 | dis_bug708901 = """\ | |
31 | %-4d 0 SETUP_LOOP 23 (to 26) | |
32 | 3 LOAD_GLOBAL 0 (range) | |
33 | 6 LOAD_CONST 1 (1) | |
34 | ||
35 | %-4d 9 LOAD_CONST 2 (10) | |
36 | 12 CALL_FUNCTION 2 | |
37 | 15 GET_ITER | |
38 | >> 16 FOR_ITER 6 (to 25) | |
39 | 19 STORE_FAST 0 (res) | |
40 | ||
41 | %-4d 22 JUMP_ABSOLUTE 16 | |
42 | >> 25 POP_BLOCK | |
43 | >> 26 LOAD_CONST 0 (None) | |
44 | 29 RETURN_VALUE | |
45 | """%(bug708901.func_code.co_firstlineno + 1, | |
46 | bug708901.func_code.co_firstlineno + 2, | |
47 | bug708901.func_code.co_firstlineno + 3) | |
48 | ||
49 | class DisTests(unittest.TestCase): | |
50 | def do_disassembly_test(self, func, expected): | |
51 | s = StringIO.StringIO() | |
52 | save_stdout = sys.stdout | |
53 | sys.stdout = s | |
54 | dis.dis(func) | |
55 | sys.stdout = save_stdout | |
56 | got = s.getvalue() | |
57 | # Trim trailing blanks (if any). | |
58 | lines = got.split('\n') | |
59 | lines = [line.rstrip() for line in lines] | |
60 | expected = expected.split("\n") | |
61 | import difflib | |
62 | if expected != lines: | |
63 | self.fail( | |
64 | "events did not match expectation:\n" + | |
65 | "\n".join(difflib.ndiff(expected, | |
66 | lines))) | |
67 | ||
68 | def test_opmap(self): | |
69 | self.assertEqual(dis.opmap["STOP_CODE"], 0) | |
70 | self.assertEqual(dis.opmap["LOAD_CONST"] in dis.hasconst, True) | |
71 | self.assertEqual(dis.opmap["STORE_NAME"] in dis.hasname, True) | |
72 | ||
73 | def test_opname(self): | |
74 | self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST") | |
75 | ||
76 | def test_boundaries(self): | |
77 | self.assertEqual(dis.opmap["EXTENDED_ARG"], dis.EXTENDED_ARG) | |
78 | self.assertEqual(dis.opmap["STORE_NAME"], dis.HAVE_ARGUMENT) | |
79 | ||
80 | def test_dis(self): | |
81 | self.do_disassembly_test(_f, dis_f) | |
82 | ||
83 | def test_bug_708901(self): | |
84 | self.do_disassembly_test(bug708901, dis_bug708901) | |
85 | ||
86 | def test_main(): | |
87 | run_unittest(DisTests) | |
88 | ||
89 | ||
90 | if __name__ == "__main__": | |
91 | test_main() |