3 test_description='exercise basic bitmap functionality'
7 echo ".git/objects/$(echo "$1" | sed -e 's|\(..\)|\1/|')"
10 # show objects present in pack ($1 should be associated *.idx)
11 list_packed_objects () {
12 git show-index <"$1" >object-list &&
13 cut -d' ' -f2 object-list
16 # has_any pattern-file content-file
17 # tests whether content-file has any entry from pattern-file with entries being
23 test_expect_success 'setup repo with moderate-sized history' '
24 test_commit_bulk --id=file 100 &&
25 git branch -M second &&
26 git checkout -b other HEAD~5 &&
27 test_commit_bulk --id=side 10 &&
28 git checkout second &&
29 bitmaptip=$(git rev-parse second) &&
30 blob=$(echo tagged-blob | git hash-object -w --stdin) &&
31 git tag tagged-blob $blob &&
32 git config repack.writebitmaps true
35 test_expect_success 'full repack creates bitmaps' '
37 ls .git/objects/pack/ | grep bitmap >output &&
38 test_line_count = 1 output
41 test_expect_success 'rev-list --test-bitmap verifies bitmaps' '
42 git rev-list --test-bitmap HEAD
45 rev_list_tests_head () {
46 test_expect_success "counting commits via bitmap ($state, $branch)" '
47 git rev-list --count $branch >expect &&
48 git rev-list --use-bitmap-index --count $branch >actual &&
49 test_cmp expect actual
52 test_expect_success "counting partial commits via bitmap ($state, $branch)" '
53 git rev-list --count $branch~5..$branch >expect &&
54 git rev-list --use-bitmap-index --count $branch~5..$branch >actual &&
55 test_cmp expect actual
58 test_expect_success "counting commits with limit ($state, $branch)" '
59 git rev-list --count -n 1 $branch >expect &&
60 git rev-list --use-bitmap-index --count -n 1 $branch >actual &&
61 test_cmp expect actual
64 test_expect_success "counting non-linear history ($state, $branch)" '
65 git rev-list --count other...second >expect &&
66 git rev-list --use-bitmap-index --count other...second >actual &&
67 test_cmp expect actual
70 test_expect_success "counting commits with limiting ($state, $branch)" '
71 git rev-list --count $branch -- 1.t >expect &&
72 git rev-list --use-bitmap-index --count $branch -- 1.t >actual &&
73 test_cmp expect actual
76 test_expect_success "counting objects via bitmap ($state, $branch)" '
77 git rev-list --count --objects $branch >expect &&
78 git rev-list --use-bitmap-index --count --objects $branch >actual &&
79 test_cmp expect actual
82 test_expect_success "enumerate commits ($state, $branch)" '
83 git rev-list --use-bitmap-index $branch >actual &&
84 git rev-list $branch >expect &&
85 test_bitmap_traversal --no-confirm-bitmaps expect actual
88 test_expect_success "enumerate --objects ($state, $branch)" '
89 git rev-list --objects --use-bitmap-index $branch >actual &&
90 git rev-list --objects $branch >expect &&
91 test_bitmap_traversal expect actual
94 test_expect_success "bitmap --objects handles non-commit objects ($state, $branch)" '
95 git rev-list --objects --use-bitmap-index $branch tagged-blob >actual &&
103 for branch in "second" "other"
109 rev_list_tests 'full bitmap'
111 test_expect_success 'clone from bitmapped repository' '
112 git clone --no-local --bare . clone.git &&
113 git rev-parse HEAD >expect &&
114 git --git-dir=clone.git rev-parse HEAD >actual &&
115 test_cmp expect actual
118 test_expect_success 'partial clone from bitmapped repository' '
119 test_config uploadpack.allowfilter true &&
120 git clone --no-local --bare --filter=blob:none . partial-clone.git &&
122 cd partial-clone.git &&
123 pack=$(echo objects/pack/*.pack) &&
124 git verify-pack -v "$pack" >have &&
125 awk "/blob/ { print \$1 }" <have >blobs &&
126 # we expect this single blob because of the direct ref
127 git rev-parse refs/tags/tagged-blob >expect &&
128 test_cmp expect blobs
132 test_expect_success 'setup further non-bitmapped commits' '
133 test_commit_bulk --id=further 10
136 rev_list_tests 'partial bitmap'
138 test_expect_success 'fetch (partial bitmap)' '
139 git --git-dir=clone.git fetch origin second:second &&
140 git rev-parse HEAD >expect &&
141 git --git-dir=clone.git rev-parse HEAD >actual &&
142 test_cmp expect actual
145 test_expect_success 'incremental repack fails when bitmaps are requested' '
146 test_commit more-1 &&
147 test_must_fail git repack -d 2>err &&
148 test_i18ngrep "Incremental repacks are incompatible with bitmap" err
151 test_expect_success 'incremental repack can disable bitmaps' '
152 test_commit more-2 &&
153 git repack -d --no-write-bitmap-index
156 test_expect_success 'pack-objects respects --local (non-local loose)' '
157 git init --bare alt.git &&
158 echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
159 echo content1 >file1 &&
160 # non-local loose object which is not present in bitmapped pack
161 altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
162 # non-local loose object which is also present in bitmapped pack
163 git cat-file blob $blob | GIT_DIR=alt.git git hash-object -w --stdin &&
166 git commit -m commit_file1 &&
167 echo HEAD | git pack-objects --local --stdout --revs >1.pack &&
168 git index-pack 1.pack &&
169 list_packed_objects 1.idx >1.objects &&
170 printf "%s\n" "$altblob" "$blob" >nonlocal-loose &&
171 ! has_any nonlocal-loose 1.objects
174 test_expect_success 'pack-objects respects --honor-pack-keep (local non-bitmapped pack)' '
175 echo content2 >file2 &&
176 blob2=$(git hash-object -w file2) &&
179 git commit -m commit_file2 &&
180 printf "%s\n" "$blob2" "$bitmaptip" >keepobjects &&
181 pack2=$(git pack-objects pack2 <keepobjects) &&
182 mv pack2-$pack2.* .git/objects/pack/ &&
183 >.git/objects/pack/pack2-$pack2.keep &&
184 rm $(objpath $blob2) &&
185 echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >2a.pack &&
186 git index-pack 2a.pack &&
187 list_packed_objects 2a.idx >2a.objects &&
188 ! has_any keepobjects 2a.objects
191 test_expect_success 'pack-objects respects --local (non-local pack)' '
192 mv .git/objects/pack/pack2-$pack2.* alt.git/objects/pack/ &&
193 echo HEAD | git pack-objects --local --stdout --revs >2b.pack &&
194 git index-pack 2b.pack &&
195 list_packed_objects 2b.idx >2b.objects &&
196 ! has_any keepobjects 2b.objects
199 test_expect_success 'pack-objects respects --honor-pack-keep (local bitmapped pack)' '
200 ls .git/objects/pack/ | grep bitmap >output &&
201 test_line_count = 1 output &&
202 packbitmap=$(basename $(cat output) .bitmap) &&
203 list_packed_objects .git/objects/pack/$packbitmap.idx >packbitmap.objects &&
204 test_when_finished "rm -f .git/objects/pack/$packbitmap.keep" &&
205 >.git/objects/pack/$packbitmap.keep &&
206 echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >3a.pack &&
207 git index-pack 3a.pack &&
208 list_packed_objects 3a.idx >3a.objects &&
209 ! has_any packbitmap.objects 3a.objects
212 test_expect_success 'pack-objects respects --local (non-local bitmapped pack)' '
213 mv .git/objects/pack/$packbitmap.* alt.git/objects/pack/ &&
214 rm -f .git/objects/pack/multi-pack-index &&
215 test_when_finished "mv alt.git/objects/pack/$packbitmap.* .git/objects/pack/" &&
216 echo HEAD | git pack-objects --local --stdout --revs >3b.pack &&
217 git index-pack 3b.pack &&
218 list_packed_objects 3b.idx >3b.objects &&
219 ! has_any packbitmap.objects 3b.objects
222 test_expect_success 'pack-objects to file can use bitmap' '
223 # make sure we still have 1 bitmap index from previous tests
224 ls .git/objects/pack/ | grep bitmap >output &&
225 test_line_count = 1 output &&
226 # verify equivalent packs are generated with/without using bitmap index
227 packasha1=$(git pack-objects --no-use-bitmap-index --all packa </dev/null) &&
228 packbsha1=$(git pack-objects --use-bitmap-index --all packb </dev/null) &&
229 list_packed_objects packa-$packasha1.idx >packa.objects &&
230 list_packed_objects packb-$packbsha1.idx >packb.objects &&
231 test_cmp packa.objects packb.objects
234 test_expect_success 'full repack, reusing previous bitmaps' '
236 ls .git/objects/pack/ | grep bitmap >output &&
237 test_line_count = 1 output
240 test_expect_success 'fetch (full bitmap)' '
241 git --git-dir=clone.git fetch origin second:second &&
242 git rev-parse HEAD >expect &&
243 git --git-dir=clone.git rev-parse HEAD >actual &&
244 test_cmp expect actual
247 test_expect_success 'create objects for missing-HAVE tests' '
248 blob=$(echo "missing have" | git hash-object -w --stdin) &&
249 tree=$(printf "100644 blob $blob\tfile\n" | git mktree) &&
250 parent=$(echo parent | git commit-tree $tree) &&
251 commit=$(echo commit | git commit-tree $tree -p $parent) &&
259 test_expect_success 'pack-objects respects --incremental' '
264 git pack-objects --incremental --stdout --revs <revs2 >4.pack &&
265 git index-pack 4.pack &&
266 list_packed_objects 4.idx >4.objects &&
267 test_line_count = 4 4.objects &&
268 git rev-list --objects $commit >revlist &&
269 cut -d" " -f1 revlist |sort >objects &&
270 test_cmp 4.objects objects
273 test_expect_success 'pack with missing blob' '
274 rm $(objpath $blob) &&
275 git pack-objects --stdout --revs <revs >/dev/null
278 test_expect_success 'pack with missing tree' '
279 rm $(objpath $tree) &&
280 git pack-objects --stdout --revs <revs >/dev/null
283 test_expect_success 'pack with missing parent' '
284 rm $(objpath $parent) &&
285 git pack-objects --stdout --revs <revs >/dev/null
288 test_expect_success JGIT 'we can read jgit bitmaps' '
289 git clone --bare . compat-jgit.git &&
291 cd compat-jgit.git &&
292 rm -f objects/pack/*.bitmap &&
294 git rev-list --test-bitmap HEAD
298 test_expect_success JGIT 'jgit can read our bitmaps' '
299 git clone --bare . compat-us.git &&
303 # jgit gc will barf if it does not like our bitmaps
308 test_expect_success 'splitting packs does not generate bogus bitmaps' '
309 test-tool genrandom foo $((1024 * 1024)) >rand &&
311 git commit -m "commit with big file" &&
312 git -c pack.packSizeLimit=500k repack -adb &&
313 git init --bare no-bitmaps.git &&
314 git -C no-bitmaps.git fetch .. HEAD
317 test_expect_success 'set up reusable pack' '
318 rm -f .git/objects/pack/*.keep &&
321 git for-each-ref --format="%(objectname)" |
322 git pack-objects --delta-base-offset --revs --stdout "$@"
326 test_expect_success 'pack reuse respects --honor-pack-keep' '
327 test_when_finished "rm -f .git/objects/pack/*.keep" &&
328 for i in .git/objects/pack/*.pack
332 reusable_pack --honor-pack-keep >empty.pack &&
333 git index-pack empty.pack &&
334 git show-index <empty.idx >actual &&
335 test_must_be_empty actual
338 test_expect_success 'pack reuse respects --local' '
339 mv .git/objects/pack/* alt.git/objects/pack/ &&
340 test_when_finished "mv alt.git/objects/pack/* .git/objects/pack/" &&
341 reusable_pack --local >empty.pack &&
342 git index-pack empty.pack &&
343 git show-index <empty.idx >actual &&
344 test_must_be_empty actual
347 test_expect_success 'pack reuse respects --incremental' '
348 reusable_pack --incremental >empty.pack &&
349 git index-pack empty.pack &&
350 git show-index <empty.idx >actual &&
351 test_must_be_empty actual
354 test_expect_success 'truncated bitmap fails gracefully (ewah)' '
355 test_config pack.writebitmaphashcache false &&
357 git rev-list --use-bitmap-index --count --all >expect &&
358 bitmap=$(ls .git/objects/pack/*.bitmap) &&
359 test_when_finished "rm -f $bitmap" &&
360 test_copy_bytes 256 <$bitmap >$bitmap.tmp &&
361 mv -f $bitmap.tmp $bitmap &&
362 git rev-list --use-bitmap-index --count --all >actual 2>stderr &&
363 test_cmp expect actual &&
364 test_i18ngrep corrupt.ewah.bitmap stderr
367 test_expect_success 'truncated bitmap fails gracefully (cache)' '
369 git rev-list --use-bitmap-index --count --all >expect &&
370 bitmap=$(ls .git/objects/pack/*.bitmap) &&
371 test_when_finished "rm -f $bitmap" &&
372 test_copy_bytes 512 <$bitmap >$bitmap.tmp &&
373 mv -f $bitmap.tmp $bitmap &&
374 git rev-list --use-bitmap-index --count --all >actual 2>stderr &&
375 test_cmp expect actual &&
376 test_i18ngrep corrupted.bitmap.index stderr
379 # have_delta <obj> <expected_base>
381 # Note that because this relies on cat-file, it might find _any_ copy of an
382 # object in the repository. The caller is responsible for making sure
383 # there's only one (e.g., via "repack -ad", or having just fetched a copy).
386 echo $1 | git cat-file --batch-check="%(deltabase)" >actual &&
387 test_cmp expect actual
390 # Create a state of history with these properties:
392 # - refs that allow a client to fetch some new history, while sharing some old
393 # history with the server; we use branches delta-reuse-old and
394 # delta-reuse-new here
396 # - the new history contains an object that is stored on the server as a delta
397 # against a base that is in the old history
399 # - the base object is not immediately reachable from the tip of the old
400 # history; finding it would involve digging down through history we know the
403 # This should result in a state where fetching from old->new would not
404 # traditionally reuse the on-disk delta (because we'd have to dig to realize
405 # that the client has it), but we will do so if bitmaps can tell us cheaply
406 # that the other side has it.
407 test_expect_success 'set up thin delta-reuse parent' '
408 # This first commit contains the buried base object.
409 test-tool genrandom delta 16384 >file &&
411 git commit -m "delta base" &&
412 base=$(git rev-parse --verify HEAD:file) &&
414 # These intermediate commits bury the base back in history.
415 # This becomes the "old" state.
419 git commit -am "intermediate $i" || return 1
421 git branch delta-reuse-old &&
423 # And now our new history has a delta against the buried base. Note
424 # that this must be smaller than the original file, since pack-objects
425 # prefers to create deltas from smaller objects to larger.
426 test-tool genrandom delta 16300 >file &&
427 git commit -am "delta result" &&
428 delta=$(git rev-parse --verify HEAD:file) &&
429 git branch delta-reuse-new &&
431 # Repack with bitmaps and double check that we have the expected delta
434 have_delta $delta $base
437 # Now we can sanity-check the non-bitmap behavior (that the server is not able
438 # to reuse the delta). This isn't strictly something we care about, so this
439 # test could be scrapped in the future. But it makes sure that the next test is
440 # actually triggering the feature we want.
442 # Note that our tools for working with on-the-wire "thin" packs are limited. So
443 # we actually perform the fetch, retain the resulting pack, and inspect the
445 test_expect_success 'fetch without bitmaps ignores delta against old base' '
446 test_config pack.usebitmaps false &&
447 test_when_finished "rm -rf client.git" &&
448 git init --bare client.git &&
451 git config transfer.unpackLimit 1 &&
452 git fetch .. delta-reuse-old:delta-reuse-old &&
453 git fetch .. delta-reuse-new:delta-reuse-new &&
454 have_delta $delta $ZERO_OID
458 # And do the same for the bitmap case, where we do expect to find the delta.
459 test_expect_success 'fetch with bitmaps can reuse old base' '
460 test_config pack.usebitmaps true &&
461 test_when_finished "rm -rf client.git" &&
462 git init --bare client.git &&
465 git config transfer.unpackLimit 1 &&
466 git fetch .. delta-reuse-old:delta-reuse-old &&
467 git fetch .. delta-reuse-new:delta-reuse-new &&
468 have_delta $delta $base