3 test_description='basic git gc tests
7 . "$TEST_DIRECTORY"/lib-terminal.sh
9 test_expect_success 'setup' '
10 # do not let the amount of physical memory affects gc
11 # behavior, make sure we always pack everything to one pack by
13 git config gc.bigPackThreshold 2g &&
15 # These are simply values which, when hashed as a blob with a newline,
16 # produce a hash where the first byte is 0x17 in their respective
33 test_expect_success 'gc empty repository' '
37 test_expect_success 'gc does not leave behind pid file' '
39 test_path_is_missing .git/gc.pid
42 test_expect_success 'gc --gobbledegook' '
43 test_expect_code 129 git gc --nonsense 2>err &&
44 test_i18ngrep "[Uu]sage: git gc" err
47 test_expect_success 'gc -h with invalid configuration' '
52 echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
53 test_expect_code 129 git gc -h >usage 2>&1
55 test_i18ngrep "[Uu]sage" broken/usage
58 test_expect_success 'gc is not aborted due to a stale symref' '
62 test_commit initial &&
63 git clone . ../client &&
64 git branch -m develop &&
71 test_expect_success 'gc --keep-largest-pack' '
72 test_create_repo keep-pack &&
79 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
80 test_line_count = 1 pack-list &&
81 cp pack-list base-pack-list &&
86 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
87 test_line_count = 3 pack-list &&
88 git gc --keep-largest-pack &&
89 ( cd .git/objects/pack && ls *.pack ) >pack-list &&
90 test_line_count = 2 pack-list &&
91 awk "/^P /{print \$2}" <.git/objects/info/packs >pack-info &&
92 test_line_count = 2 pack-info &&
93 test_path_is_file .git/objects/pack/$(cat base-pack-list) &&
98 test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
99 test_config gc.auto 3 &&
100 test_config gc.autodetach false &&
101 test_config pack.writebitmaps true &&
102 # We need to create two object whose sha1s start with 17
103 # since this is what git gc counts. As it happens, these
104 # two blobs will do so.
105 test_commit "$(test_oid obj1)" &&
106 test_commit "$(test_oid obj2)" &&
107 # Our first gc will create a pack; our second will create a second pack
109 ls .git/objects/pack/pack-*.pack | sort >existing_packs &&
110 test_commit "$(test_oid obj3)" &&
111 test_commit "$(test_oid obj4)" &&
113 git gc --auto 2>err &&
114 test_i18ngrep ! "^warning:" err &&
115 ls .git/objects/pack/pack-*.pack | sort >post_packs &&
116 comm -1 -3 existing_packs post_packs >new &&
117 comm -2 -3 existing_packs post_packs >del &&
118 test_line_count = 0 del && # No packs are deleted
119 test_line_count = 1 new # There is one new pack
122 test_expect_success 'gc --no-quiet' '
123 GIT_PROGRESS_DELAY=0 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
124 test_must_be_empty stdout &&
125 test_i18ngrep "Computing commit graph generation numbers" stderr
128 test_expect_success TTY 'with TTY: gc --no-quiet' '
129 test_terminal env GIT_PROGRESS_DELAY=0 \
130 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
131 test_must_be_empty stdout &&
132 test_i18ngrep "Enumerating objects" stderr &&
133 test_i18ngrep "Computing commit graph generation numbers" stderr
136 test_expect_success 'gc --quiet' '
137 git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
138 test_must_be_empty stdout &&
139 test_must_be_empty stderr
142 test_expect_success 'gc.reflogExpire{Unreachable,}=never skips "expire" via "gc"' '
143 test_config gc.reflogExpire never &&
144 test_config gc.reflogExpireUnreachable never &&
146 GIT_TRACE=$(pwd)/trace.out git gc &&
148 # Check that git-pack-refs is run as a sanity check (done via
149 # gc_before_repack()) but that git-expire is not.
150 grep -E "^trace: (built-in|exec|run_command): git pack-refs --" trace.out &&
151 ! grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
154 test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "expire" via "gc"' '
156 test_config gc.reflogExpire never &&
157 GIT_TRACE=$(pwd)/trace.out git gc &&
158 grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
161 run_and_wait_for_auto_gc () {
162 # We read stdout from gc for the side effect of waiting until the
163 # background gc process exits, closing its fd 9. Furthermore, the
164 # variable assignment from a command substitution preserves the
165 # exit status of the main gc process.
166 # Note: this fd trickery doesn't work on Windows, but there is no
167 # need to, because on Win the auto gc always runs in the foreground.
168 doesnt_matter=$(git gc --auto 9>&1)
171 test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
175 test_config gc.autopacklimit 1 &&
176 test_config gc.autodetach true &&
177 echo fleem >.git/gc.log &&
178 git gc --auto 2>err &&
179 test_i18ngrep "^warning:" err &&
180 test_config gc.logexpiry 5.days &&
181 test-tool chmtime =-345600 .git/gc.log &&
183 test_config gc.logexpiry 2.days &&
184 run_and_wait_for_auto_gc &&
185 ls .git/objects/pack/pack-*.pack >packs &&
186 test_line_count = 1 packs
189 test_expect_success 'background auto gc respects lock for all operations' '
190 # make sure we run a background auto-gc
191 test_commit make-pack &&
193 test_config gc.autopacklimit 1 &&
194 test_config gc.autodetach true &&
196 # create a ref whose loose presence we can use to detect a pack-refs run
197 git update-ref refs/heads/should-be-loose HEAD &&
198 test_path_is_file .git/refs/heads/should-be-loose &&
200 # now fake a concurrent gc that holds the lock; we can use our
201 # shell pid so that it looks valid.
202 hostname=$(hostname || echo unknown) &&
204 if test_have_prereq MINGW && test -f /proc/$shell_pid/winpid
206 # In Git for Windows, Bash (actually, the MSYS2 runtime) has a
207 # different idea of PIDs than git.exe (actually Windows). Use
208 # the Windows PID in this case.
209 shell_pid=$(cat /proc/$shell_pid/winpid)
211 printf "%d %s" "$shell_pid" "$hostname" >.git/gc.pid &&
213 # our gc should exit zero without doing anything
214 run_and_wait_for_auto_gc &&
215 test_path_is_file .git/refs/heads/should-be-loose
218 # DO NOT leave a detached auto gc process running near the end of the
219 # test script: it can run long enough in the background to racily
220 # interfere with the cleanup in 'test_done'.