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d3038d22 JK |
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' | |
5902f5f4 | 28 | GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main |
334afbc7 JS |
29 | export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME |
30 | ||
d3038d22 JK |
31 | . ./test-lib.sh |
32 | ||
33 | # We care about reachability, so we do not want to use | |
34 | # the normal test_commit, which creates extra tags. | |
35 | add () { | |
36 | echo "$1" >"$1" && | |
37 | git add "$1" | |
38 | } | |
39 | commit () { | |
40 | test_tick && | |
41 | add "$1" && | |
42 | git commit -m "$1" | |
43 | } | |
44 | ||
abcb8655 | 45 | maybe_repack () { |
2ba582ba JK |
46 | case "$title" in |
47 | loose) | |
48 | : skip repack | |
49 | ;; | |
50 | repack) | |
abcb8655 | 51 | git repack -ad |
2ba582ba JK |
52 | ;; |
53 | bitmap) | |
54 | git repack -adb | |
55 | ;; | |
56 | *) | |
57 | echo >&2 "unknown test type in maybe_repack" | |
58 | return 1 | |
59 | ;; | |
60 | esac | |
abcb8655 JK |
61 | } |
62 | ||
2ba582ba JK |
63 | for title in loose repack bitmap |
64 | do | |
abcb8655 JK |
65 | test_expect_success "make repo completely empty ($title)" ' |
66 | rm -rf .git && | |
67 | git init | |
68 | ' | |
69 | ||
70 | test_expect_success "disable reflogs ($title)" ' | |
71 | git config core.logallrefupdates false && | |
d0ab0584 | 72 | git reflog expire --expire=all --all |
abcb8655 | 73 | ' |
d3038d22 | 74 | |
abcb8655 JK |
75 | test_expect_success "setup basic history ($title)" ' |
76 | commit base | |
77 | ' | |
d3038d22 | 78 | |
abcb8655 JK |
79 | test_expect_success "create and abandon some objects ($title)" ' |
80 | git checkout -b experiment && | |
81 | commit abandon && | |
82 | maybe_repack && | |
5902f5f4 | 83 | git checkout main && |
abcb8655 JK |
84 | git branch -D experiment |
85 | ' | |
d3038d22 | 86 | |
abcb8655 | 87 | test_expect_success "simulate time passing ($title)" ' |
deb9845a | 88 | test-tool chmtime --get -86400 $(find .git/objects -type f) |
abcb8655 | 89 | ' |
d3038d22 | 90 | |
abcb8655 JK |
91 | test_expect_success "start writing new commit with old blob ($title)" ' |
92 | tree=$( | |
93 | GIT_INDEX_FILE=index.tmp && | |
94 | export GIT_INDEX_FILE && | |
95 | git read-tree HEAD && | |
96 | add unrelated && | |
97 | add abandon && | |
98 | git write-tree | |
99 | ) | |
100 | ' | |
d3038d22 | 101 | |
abcb8655 JK |
102 | test_expect_success "simultaneous gc ($title)" ' |
103 | git gc --prune=12.hours.ago | |
104 | ' | |
d3038d22 | 105 | |
abcb8655 JK |
106 | test_expect_success "finish writing out commit ($title)" ' |
107 | commit=$(echo foo | git commit-tree -p HEAD $tree) && | |
108 | git update-ref HEAD $commit | |
109 | ' | |
d3038d22 | 110 | |
abcb8655 JK |
111 | # "abandon" blob should have been rescued by reference from new tree |
112 | test_expect_success "repository passes fsck ($title)" ' | |
113 | git fsck | |
114 | ' | |
33d4221c JK |
115 | |
116 | test_expect_success "abandon objects again ($title)" ' | |
117 | git reset --hard HEAD^ && | |
deb9845a | 118 | test-tool chmtime --get -86400 $(find .git/objects -type f) |
33d4221c JK |
119 | ' |
120 | ||
121 | test_expect_success "start writing new commit with same tree ($title)" ' | |
122 | tree=$( | |
123 | GIT_INDEX_FILE=index.tmp && | |
124 | export GIT_INDEX_FILE && | |
125 | git read-tree HEAD && | |
126 | add abandon && | |
127 | add unrelated && | |
128 | git write-tree | |
129 | ) | |
130 | ' | |
131 | ||
132 | test_expect_success "simultaneous gc ($title)" ' | |
133 | git gc --prune=12.hours.ago | |
134 | ' | |
135 | ||
136 | # tree should have been refreshed by write-tree | |
137 | test_expect_success "finish writing out commit ($title)" ' | |
138 | commit=$(echo foo | git commit-tree -p HEAD $tree) && | |
139 | git update-ref HEAD $commit | |
140 | ' | |
abcb8655 | 141 | done |
d3038d22 | 142 | |
a3ba6bf1 | 143 | test_expect_success 'do not complain about existing broken links (commit)' ' |
252a4ee6 | 144 | cat >broken-commit <<-EOF && |
145 | tree $(test_oid 001) | |
146 | parent $(test_oid 002) | |
daf7d867 JK |
147 | author whatever <whatever@example.com> 1234 -0000 |
148 | committer whatever <whatever@example.com> 1234 -0000 | |
149 | ||
150 | some message | |
151 | EOF | |
152 | commit=$(git hash-object -t commit -w broken-commit) && | |
b068d9a2 | 153 | git gc -q 2>stderr && |
daf7d867 JK |
154 | verbose git cat-file -e $commit && |
155 | test_must_be_empty stderr | |
156 | ' | |
157 | ||
a3ba6bf1 | 158 | test_expect_success 'do not complain about existing broken links (tree)' ' |
252a4ee6 | 159 | cat >broken-tree <<-EOF && |
160 | 100644 blob $(test_oid 003) foo | |
a3ba6bf1 JK |
161 | EOF |
162 | tree=$(git mktree --missing <broken-tree) && | |
b068d9a2 | 163 | git gc -q 2>stderr && |
a3ba6bf1 JK |
164 | git cat-file -e $tree && |
165 | test_must_be_empty stderr | |
166 | ' | |
167 | ||
168 | test_expect_success 'do not complain about existing broken links (tag)' ' | |
252a4ee6 | 169 | cat >broken-tag <<-EOF && |
170 | object $(test_oid 004) | |
a3ba6bf1 JK |
171 | type commit |
172 | tag broken | |
173 | tagger whatever <whatever@example.com> 1234 -0000 | |
174 | ||
175 | this is a broken tag | |
176 | EOF | |
177 | tag=$(git hash-object -t tag -w broken-tag) && | |
b068d9a2 | 178 | git gc -q 2>stderr && |
a3ba6bf1 JK |
179 | git cat-file -e $tag && |
180 | test_must_be_empty stderr | |
181 | ' | |
182 | ||
d3038d22 | 183 | test_done |