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920dae64 AT |
1 | """Test suite for the profile module.""" |
2 | ||
3 | import profile | |
4 | import os | |
5 | from test.test_support import TESTFN, vereq | |
6 | ||
7 | # In order to have reproducible time, we simulate a timer in the global | |
8 | # variable 'ticks', which represents simulated time in milliseconds. | |
9 | # (We can't use a helper function increment the timer since it would be | |
10 | # included in the profile and would appear to consume all the time.) | |
11 | ticks = 0 | |
12 | ||
13 | def test_1(): | |
14 | global ticks | |
15 | ticks = 0 | |
16 | prof = profile.Profile(timer) | |
17 | prof.runctx("testfunc()", globals(), globals()) | |
18 | prof.print_stats() | |
19 | ||
20 | def timer(): | |
21 | return ticks*0.001 | |
22 | ||
23 | def testfunc(): | |
24 | # 1 call | |
25 | # 1000 ticks total: 400 ticks local, 600 ticks in subfunctions | |
26 | global ticks | |
27 | ticks += 199 | |
28 | helper() # 300 | |
29 | helper() # 300 | |
30 | ticks += 201 | |
31 | ||
32 | def helper(): | |
33 | # 2 calls | |
34 | # 300 ticks total: 40 ticks local, 260 ticks in subfunctions | |
35 | global ticks | |
36 | ticks += 1 | |
37 | helper1() # 30 | |
38 | ticks += 3 | |
39 | helper1() # 30 | |
40 | ticks += 6 | |
41 | helper2() # 50 | |
42 | ticks += 5 | |
43 | helper2() # 50 | |
44 | ticks += 4 | |
45 | helper2() # 50 | |
46 | ticks += 7 | |
47 | helper2() # 50 | |
48 | ticks += 14 | |
49 | ||
50 | def helper1(): | |
51 | # 4 calls | |
52 | # 30 ticks total: 29 ticks local, 1 tick in subfunctions | |
53 | global ticks | |
54 | ticks += 10 | |
55 | hasattr(C(), "foo") | |
56 | ticks += 19 | |
57 | ||
58 | def helper2(): | |
59 | # 8 calls | |
60 | # 50 ticks local: 39 ticks local, 11 ticks in subfunctions | |
61 | global ticks | |
62 | ticks += 11 | |
63 | hasattr(C(), "bar") # 1 | |
64 | ticks += 13 | |
65 | subhelper() # 10 | |
66 | ticks += 15 | |
67 | ||
68 | def subhelper(): | |
69 | # 8 calls | |
70 | # 10 ticks total: 8 ticks local, 2 ticks in subfunctions | |
71 | global ticks | |
72 | ticks += 2 | |
73 | for i in range(2): | |
74 | try: | |
75 | C().foo # 1 x 2 | |
76 | except AttributeError: | |
77 | ticks += 3 # 3 x 2 | |
78 | ||
79 | class C: | |
80 | def __getattr__(self, name): | |
81 | # 28 calls | |
82 | # 1 tick, local | |
83 | global ticks | |
84 | ticks += 1 | |
85 | raise AttributeError | |
86 | ||
87 | ||
88 | def test_2(): | |
89 | d = globals().copy() | |
90 | def testfunc(): | |
91 | global x | |
92 | x = 1 | |
93 | d['testfunc'] = testfunc | |
94 | profile.runctx("testfunc()", d, d, TESTFN) | |
95 | vereq (x, 1) | |
96 | os.unlink (TESTFN) | |
97 | ||
98 | def test_3(): | |
99 | result = [] | |
100 | def testfunc1(): | |
101 | try: len(None) | |
102 | except: pass | |
103 | try: len(None) | |
104 | except: pass | |
105 | result.append(True) | |
106 | def testfunc2(): | |
107 | testfunc1() | |
108 | testfunc1() | |
109 | profile.runctx("testfunc2()", locals(), locals(), TESTFN) | |
110 | vereq(result, [True, True]) | |
111 | os.unlink(TESTFN) | |
112 | ||
113 | def test_main(): | |
114 | test_1() | |
115 | test_2() | |
116 | test_3() | |
117 | ||
118 | if __name__ == "__main__": | |
119 | test_main() |