submodule: Use cat instead of echo to avoid DOS line-endings
[git/dscho.git] / t / t6002-rev-list-bisect.sh
blobfb07536a0f5b7e1000cf4945f55be3305df88e90
1 #!/bin/sh
3 # Copyright (c) 2005 Jon Seymour
5 test_description='Tests git rev-list --bisect functionality'
7 . ./test-lib.sh
8 . "$TEST_DIRECTORY"/lib-t6000.sh # t6xxx specific functions
10 # usage: test_bisection max-diff bisect-option head ^prune...
12 # e.g. test_bisection 1 --bisect l1 ^l0
14 test_bisection_diff()
16 _max_diff=$1
17 _bisect_option=$2
18 shift 2
19 _bisection=$(git rev-list $_bisect_option "$@")
20 _list_size=$(git rev-list "$@" | wc -l)
21 _head=$1
22 shift 1
23 _bisection_size=$(git rev-list $_bisection "$@" | wc -l)
24 [ -n "$_list_size" -a -n "$_bisection_size" ] ||
25 error "test_bisection_diff failed"
27 # Test if bisection size is close to half of list size within
28 # tolerance.
30 _bisect_err=`expr $_list_size - $_bisection_size \* 2`
31 test "$_bisect_err" -lt 0 && _bisect_err=`expr 0 - $_bisect_err`
32 _bisect_err=`expr $_bisect_err / 2` ; # floor
34 test_expect_success \
35 "bisection diff $_bisect_option $_head $* <= $_max_diff" \
36 'test $_bisect_err -le $_max_diff'
39 date >path0
40 git update-index --add path0
41 save_tag tree git write-tree
42 on_committer_date "1971-08-16 00:00:00" hide_error save_tag root unique_commit root tree
43 on_committer_date "1971-08-16 00:00:01" save_tag l0 unique_commit l0 tree -p root
44 on_committer_date "1971-08-16 00:00:02" save_tag l1 unique_commit l1 tree -p l0
45 on_committer_date "1971-08-16 00:00:03" save_tag l2 unique_commit l2 tree -p l1
46 on_committer_date "1971-08-16 00:00:04" save_tag a0 unique_commit a0 tree -p l2
47 on_committer_date "1971-08-16 00:00:05" save_tag a1 unique_commit a1 tree -p a0
48 on_committer_date "1971-08-16 00:00:06" save_tag b1 unique_commit b1 tree -p a0
49 on_committer_date "1971-08-16 00:00:07" save_tag c1 unique_commit c1 tree -p b1
50 on_committer_date "1971-08-16 00:00:08" save_tag b2 unique_commit b2 tree -p b1
51 on_committer_date "1971-08-16 00:00:09" save_tag b3 unique_commit b2 tree -p b2
52 on_committer_date "1971-08-16 00:00:10" save_tag c2 unique_commit c2 tree -p c1 -p b2
53 on_committer_date "1971-08-16 00:00:11" save_tag c3 unique_commit c3 tree -p c2
54 on_committer_date "1971-08-16 00:00:12" save_tag a2 unique_commit a2 tree -p a1
55 on_committer_date "1971-08-16 00:00:13" save_tag a3 unique_commit a3 tree -p a2
56 on_committer_date "1971-08-16 00:00:14" save_tag b4 unique_commit b4 tree -p b3 -p a3
57 on_committer_date "1971-08-16 00:00:15" save_tag a4 unique_commit a4 tree -p a3 -p b4 -p c3
58 on_committer_date "1971-08-16 00:00:16" save_tag l3 unique_commit l3 tree -p a4
59 on_committer_date "1971-08-16 00:00:17" save_tag l4 unique_commit l4 tree -p l3
60 on_committer_date "1971-08-16 00:00:18" save_tag l5 unique_commit l5 tree -p l4
61 git update-ref HEAD $(tag l5)
64 # E
65 # / \
66 # e1 |
67 # | |
68 # e2 |
69 # | |
70 # e3 |
71 # | |
72 # e4 |
73 # | |
74 # | f1
75 # | |
76 # | f2
77 # | |
78 # | f3
79 # | |
80 # | f4
81 # | |
82 # e5 |
83 # | |
84 # e6 |
85 # | |
86 # e7 |
87 # | |
88 # e8 |
89 # \ /
90 # F
93 on_committer_date "1971-08-16 00:00:00" hide_error save_tag F unique_commit F tree
94 on_committer_date "1971-08-16 00:00:01" save_tag e8 unique_commit e8 tree -p F
95 on_committer_date "1971-08-16 00:00:02" save_tag e7 unique_commit e7 tree -p e8
96 on_committer_date "1971-08-16 00:00:03" save_tag e6 unique_commit e6 tree -p e7
97 on_committer_date "1971-08-16 00:00:04" save_tag e5 unique_commit e5 tree -p e6
98 on_committer_date "1971-08-16 00:00:05" save_tag f4 unique_commit f4 tree -p F
99 on_committer_date "1971-08-16 00:00:06" save_tag f3 unique_commit f3 tree -p f4
100 on_committer_date "1971-08-16 00:00:07" save_tag f2 unique_commit f2 tree -p f3
101 on_committer_date "1971-08-16 00:00:08" save_tag f1 unique_commit f1 tree -p f2
102 on_committer_date "1971-08-16 00:00:09" save_tag e4 unique_commit e4 tree -p e5
103 on_committer_date "1971-08-16 00:00:10" save_tag e3 unique_commit e3 tree -p e4
104 on_committer_date "1971-08-16 00:00:11" save_tag e2 unique_commit e2 tree -p e3
105 on_committer_date "1971-08-16 00:00:12" save_tag e1 unique_commit e1 tree -p e2
106 on_committer_date "1971-08-16 00:00:13" save_tag E unique_commit E tree -p e1 -p f1
108 on_committer_date "1971-08-16 00:00:00" hide_error save_tag U unique_commit U tree
109 on_committer_date "1971-08-16 00:00:01" save_tag u0 unique_commit u0 tree -p U
110 on_committer_date "1971-08-16 00:00:01" save_tag u1 unique_commit u1 tree -p u0
111 on_committer_date "1971-08-16 00:00:02" save_tag u2 unique_commit u2 tree -p u0
112 on_committer_date "1971-08-16 00:00:03" save_tag u3 unique_commit u3 tree -p u0
113 on_committer_date "1971-08-16 00:00:04" save_tag u4 unique_commit u4 tree -p u0
114 on_committer_date "1971-08-16 00:00:05" save_tag u5 unique_commit u5 tree -p u0
115 on_committer_date "1971-08-16 00:00:06" save_tag V unique_commit V tree -p u1 -p u2 -p u3 -p u4 -p u5
117 test_sequence()
119 _bisect_option=$1
121 test_bisection_diff 0 $_bisect_option l0 ^root
122 test_bisection_diff 0 $_bisect_option l1 ^root
123 test_bisection_diff 0 $_bisect_option l2 ^root
124 test_bisection_diff 0 $_bisect_option a0 ^root
125 test_bisection_diff 0 $_bisect_option a1 ^root
126 test_bisection_diff 0 $_bisect_option a2 ^root
127 test_bisection_diff 0 $_bisect_option a3 ^root
128 test_bisection_diff 0 $_bisect_option b1 ^root
129 test_bisection_diff 0 $_bisect_option b2 ^root
130 test_bisection_diff 0 $_bisect_option b3 ^root
131 test_bisection_diff 0 $_bisect_option c1 ^root
132 test_bisection_diff 0 $_bisect_option c2 ^root
133 test_bisection_diff 0 $_bisect_option c3 ^root
134 test_bisection_diff 0 $_bisect_option E ^F
135 test_bisection_diff 0 $_bisect_option e1 ^F
136 test_bisection_diff 0 $_bisect_option e2 ^F
137 test_bisection_diff 0 $_bisect_option e3 ^F
138 test_bisection_diff 0 $_bisect_option e4 ^F
139 test_bisection_diff 0 $_bisect_option e5 ^F
140 test_bisection_diff 0 $_bisect_option e6 ^F
141 test_bisection_diff 0 $_bisect_option e7 ^F
142 test_bisection_diff 0 $_bisect_option f1 ^F
143 test_bisection_diff 0 $_bisect_option f2 ^F
144 test_bisection_diff 0 $_bisect_option f3 ^F
145 test_bisection_diff 0 $_bisect_option f4 ^F
146 test_bisection_diff 0 $_bisect_option E ^F
148 test_bisection_diff 1 $_bisect_option V ^U
149 test_bisection_diff 0 $_bisect_option V ^U ^u1 ^u2 ^u3
150 test_bisection_diff 0 $_bisect_option u1 ^U
151 test_bisection_diff 0 $_bisect_option u2 ^U
152 test_bisection_diff 0 $_bisect_option u3 ^U
153 test_bisection_diff 0 $_bisect_option u4 ^U
154 test_bisection_diff 0 $_bisect_option u5 ^U
157 # the following illustrates Linus' binary bug blatt idea.
159 # assume the bug is actually at l3, but you don't know that - all you know is that l3 is broken
160 # and it wasn't broken before
162 # keep bisecting the list, advancing the "bad" head and accumulating "good" heads until
163 # the bisection point is the head - this is the bad point.
166 test_output_expect_success "$_bisect_option l5 ^root" 'git rev-list $_bisect_option l5 ^root' <<EOF
170 test_output_expect_success "$_bisect_option l5 ^root ^c3" 'git rev-list $_bisect_option l5 ^root ^c3' <<EOF
174 test_output_expect_success "$_bisect_option l5 ^root ^c3 ^b4" 'git rev-list $_bisect_option l5 ^c3 ^b4' <<EOF
178 test_output_expect_success "$_bisect_option l3 ^root ^c3 ^b4" 'git rev-list $_bisect_option l3 ^root ^c3 ^b4' <<EOF
182 test_output_expect_success "$_bisect_option l5 ^b3 ^a3 ^b4 ^a4" 'git rev-list $_bisect_option l3 ^b3 ^a3 ^a4' <<EOF
187 # if l3 is bad, then l4 is bad too - so advance the bad pointer by making b4 the known bad head
190 test_output_expect_success "$_bisect_option l4 ^a2 ^a3 ^b ^a4" 'git rev-list $_bisect_option l4 ^a2 ^a3 ^a4' <<EOF
194 test_output_expect_success "$_bisect_option l3 ^a2 ^a3 ^b ^a4" 'git rev-list $_bisect_option l3 ^a2 ^a3 ^a4' <<EOF
198 # found!
201 # as another example, let's consider a4 to be the bad head, in which case
204 test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4" 'git rev-list $_bisect_option a4 ^a2 ^a3 ^b4' <<EOF
208 test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4 ^c2" 'git rev-list $_bisect_option a4 ^a2 ^a3 ^b4 ^c2' <<EOF
212 test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4 ^c2 ^c3" 'git rev-list $_bisect_option a4 ^a2 ^a3 ^b4 ^c2 ^c3' <<EOF
216 # found!
219 # or consider c3 to be the bad head
222 test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4" 'git rev-list $_bisect_option a4 ^a2 ^a3 ^b4' <<EOF
226 test_output_expect_success "$_bisect_option c3 ^a2 ^a3 ^b4 ^c2" 'git rev-list $_bisect_option c3 ^a2 ^a3 ^b4 ^c2' <<EOF
230 # found!
234 test_sequence "--bisect"
238 test_done