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1 | #!/bin/sh | |
2 | # | |
3 | # This test covers the handling of objects which might have old | |
4 | # mtimes in the filesystem (because they were used previously) | |
5 | # and are just now becoming referenced again. | |
6 | # | |
7 | # We're going to do two things that are a little bit "fake" to | |
8 | # help make our simulation easier: | |
9 | # | |
10 | # 1. We'll turn off reflogs. You can still run into | |
11 | # problems with reflogs on, but your objects | |
12 | # don't get pruned until both the reflog expiration | |
13 | # has passed on their references, _and_ they are out | |
14 | # of prune's expiration period. Dropping reflogs | |
15 | # means we only have to deal with one variable in our tests, | |
16 | # but the results generalize. | |
17 | # | |
18 | # 2. We'll use a temporary index file to create our | |
19 | # works-in-progress. Most workflows would mention | |
20 | # referenced objects in the index, which prune takes | |
21 | # into account. However, many operations don't. For | |
22 | # example, a partial commit with "git commit foo" | |
23 | # will use a temporary index. Or they may not need | |
24 | # an index at all (e.g., creating a new commit | |
25 | # to refer to an existing tree). | |
26 | ||
27 | test_description='check pruning of dependent objects' | |
28 | . ./test-lib.sh | |
29 | ||
30 | # We care about reachability, so we do not want to use | |
31 | # the normal test_commit, which creates extra tags. | |
32 | add () { | |
33 | echo "$1" >"$1" && | |
34 | git add "$1" | |
35 | } | |
36 | commit () { | |
37 | test_tick && | |
38 | add "$1" && | |
39 | git commit -m "$1" | |
40 | } | |
41 | ||
42 | maybe_repack () { | |
43 | if test -n "$repack"; then | |
44 | git repack -ad | |
45 | fi | |
46 | } | |
47 | ||
48 | for repack in '' true; do | |
49 | title=${repack:+repack} | |
50 | title=${title:-loose} | |
51 | ||
52 | test_expect_success "make repo completely empty ($title)" ' | |
53 | rm -rf .git && | |
54 | git init | |
55 | ' | |
56 | ||
57 | test_expect_success "disable reflogs ($title)" ' | |
58 | git config core.logallrefupdates false && | |
59 | git reflog expire --expire=all --all | |
60 | ' | |
61 | ||
62 | test_expect_success "setup basic history ($title)" ' | |
63 | commit base | |
64 | ' | |
65 | ||
66 | test_expect_success "create and abandon some objects ($title)" ' | |
67 | git checkout -b experiment && | |
68 | commit abandon && | |
69 | maybe_repack && | |
70 | git checkout master && | |
71 | git branch -D experiment | |
72 | ' | |
73 | ||
74 | test_expect_success "simulate time passing ($title)" ' | |
75 | test-tool chmtime --get -86400 $(find .git/objects -type f) | |
76 | ' | |
77 | ||
78 | test_expect_success "start writing new commit with old blob ($title)" ' | |
79 | tree=$( | |
80 | GIT_INDEX_FILE=index.tmp && | |
81 | export GIT_INDEX_FILE && | |
82 | git read-tree HEAD && | |
83 | add unrelated && | |
84 | add abandon && | |
85 | git write-tree | |
86 | ) | |
87 | ' | |
88 | ||
89 | test_expect_success "simultaneous gc ($title)" ' | |
90 | git gc --prune=12.hours.ago | |
91 | ' | |
92 | ||
93 | test_expect_success "finish writing out commit ($title)" ' | |
94 | commit=$(echo foo | git commit-tree -p HEAD $tree) && | |
95 | git update-ref HEAD $commit | |
96 | ' | |
97 | ||
98 | # "abandon" blob should have been rescued by reference from new tree | |
99 | test_expect_success "repository passes fsck ($title)" ' | |
100 | git fsck | |
101 | ' | |
102 | ||
103 | test_expect_success "abandon objects again ($title)" ' | |
104 | git reset --hard HEAD^ && | |
105 | test-tool chmtime --get -86400 $(find .git/objects -type f) | |
106 | ' | |
107 | ||
108 | test_expect_success "start writing new commit with same tree ($title)" ' | |
109 | tree=$( | |
110 | GIT_INDEX_FILE=index.tmp && | |
111 | export GIT_INDEX_FILE && | |
112 | git read-tree HEAD && | |
113 | add abandon && | |
114 | add unrelated && | |
115 | git write-tree | |
116 | ) | |
117 | ' | |
118 | ||
119 | test_expect_success "simultaneous gc ($title)" ' | |
120 | git gc --prune=12.hours.ago | |
121 | ' | |
122 | ||
123 | # tree should have been refreshed by write-tree | |
124 | test_expect_success "finish writing out commit ($title)" ' | |
125 | commit=$(echo foo | git commit-tree -p HEAD $tree) && | |
126 | git update-ref HEAD $commit | |
127 | ' | |
128 | done | |
129 | ||
130 | test_expect_success 'do not complain about existing broken links (commit)' ' | |
131 | cat >broken-commit <<-\EOF && | |
132 | tree 0000000000000000000000000000000000000001 | |
133 | parent 0000000000000000000000000000000000000002 | |
134 | author whatever <whatever@example.com> 1234 -0000 | |
135 | committer whatever <whatever@example.com> 1234 -0000 | |
136 | ||
137 | some message | |
138 | EOF | |
139 | commit=$(git hash-object -t commit -w broken-commit) && | |
140 | git gc -q 2>stderr && | |
141 | verbose git cat-file -e $commit && | |
142 | test_must_be_empty stderr | |
143 | ' | |
144 | ||
145 | test_expect_success 'do not complain about existing broken links (tree)' ' | |
146 | cat >broken-tree <<-\EOF && | |
147 | 100644 blob 0000000000000000000000000000000000000003 foo | |
148 | EOF | |
149 | tree=$(git mktree --missing <broken-tree) && | |
150 | git gc -q 2>stderr && | |
151 | git cat-file -e $tree && | |
152 | test_must_be_empty stderr | |
153 | ' | |
154 | ||
155 | test_expect_success 'do not complain about existing broken links (tag)' ' | |
156 | cat >broken-tag <<-\EOF && | |
157 | object 0000000000000000000000000000000000000004 | |
158 | type commit | |
159 | tag broken | |
160 | tagger whatever <whatever@example.com> 1234 -0000 | |
161 | ||
162 | this is a broken tag | |
163 | EOF | |
164 | tag=$(git hash-object -t tag -w broken-tag) && | |
165 | git gc -q 2>stderr && | |
166 | git cat-file -e $tag && | |
167 | test_must_be_empty stderr | |
168 | ' | |
169 | ||
170 | test_done |