contrib/subtree/t/t7900-subtree.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2012 Avery Pennaraum
   4 #
   5 test_description='Basic porcelain support for subtrees
   6
   7 This test verifies the basic operation of the merge, pull, add
   8 and split subcommands of git subtree.
   9 '
  10
  11 TEST_DIRECTORY=$(pwd)/../../../t
  12 export TEST_DIRECTORY
  13
  14 . ../../../t/test-lib.sh
  15
  16 create()
  17 {
  18         echo "$1" >"$1"
  19         git add "$1"
  20 }
  21
  22
  23 check_equal()
  24 {
  25         test_debug 'echo'
  26         test_debug "echo \"check a:\" \"{$1}\""
  27         test_debug "echo \"      b:\" \"{$2}\""
  28         if [ "$1" = "$2" ]; then
  29                 return 0
  30         else
  31                 return 1
  32         fi
  33 }
  34
  35 fixnl()
  36 {
  37         t=""
  38         while read x; do
  39                 t="$t$x "
  40         done
  41         echo $t
  42 }
  43
  44 multiline()
  45 {
  46         while read x; do
  47                 set -- $x
  48                 for d in "$@"; do
  49                         echo "$d"
  50                 done
  51         done
  52 }
  53
  54 undo()
  55 {
  56         git reset --hard HEAD~
  57 }
  58
  59 last_commit_message()
  60 {
  61         git log --pretty=format:%s -1
  62 }
  63
  64 test_expect_success 'init subproj' '
  65         test_create_repo subproj
  66 '
  67
  68 # To the subproject!
  69 cd subproj
  70
  71 test_expect_success 'add sub1' '
  72         create sub1 &&
  73         git commit -m "sub1" &&
  74         git branch sub1 &&
  75         git branch -m master subproj
  76 '
  77
  78 # Save this hash for testing later.
  79
  80 subdir_hash=$(git rev-parse HEAD)
  81
  82 test_expect_success 'add sub2' '
  83         create sub2 &&
  84         git commit -m "sub2" &&
  85         git branch sub2
  86 '
  87
  88 test_expect_success 'add sub3' '
  89         create sub3 &&
  90         git commit -m "sub3" &&
  91         git branch sub3
  92 '
  93
  94 # Back to mainline
  95 cd ..
  96
  97 test_expect_success 'enable log.date=relative to catch errors' '
  98         git config log.date relative
  99 '
 100
 101 test_expect_success 'add main4' '
 102         create main4 &&
 103         git commit -m "main4" &&
 104         git branch -m master mainline &&
 105         git branch subdir
 106 '
 107
 108 test_expect_success 'fetch subproj history' '
 109         git fetch ./subproj sub1 &&
 110         git branch sub1 FETCH_HEAD
 111 '
 112
 113 test_expect_success 'no subtree exists in main tree' '
 114         test_must_fail git subtree merge --prefix=subdir sub1
 115 '
 116
 117 test_expect_success 'no pull from non-existant subtree' '
 118         test_must_fail git subtree pull --prefix=subdir ./subproj sub1
 119 '
 120
 121 test_expect_success 'check if --message works for add' '
 122         git subtree add --prefix=subdir --message="Added subproject" sub1 &&
 123         check_equal ''"$(last_commit_message)"'' "Added subproject" &&
 124         undo
 125 '
 126
 127 test_expect_success 'check if --message works as -m and --prefix as -P' '
 128         git subtree add -P subdir -m "Added subproject using git subtree" sub1 &&
 129         check_equal ''"$(last_commit_message)"'' "Added subproject using git subtree" &&
 130         undo
 131 '
 132
 133 test_expect_success 'check if --message works with squash too' '
 134         git subtree add -P subdir -m "Added subproject with squash" --squash sub1 &&
 135         check_equal ''"$(last_commit_message)"'' "Added subproject with squash" &&
 136         undo
 137 '
 138
 139 test_expect_success 'add subproj to mainline' '
 140         git subtree add --prefix=subdir/ FETCH_HEAD &&
 141         check_equal ''"$(last_commit_message)"'' "Add '"'subdir/'"' from commit '"'"'''"$(git rev-parse sub1)"'''"'"'"
 142 '
 143
 144 # this shouldn't actually do anything, since FETCH_HEAD is already a parent
 145 test_expect_success 'merge fetched subproj' '
 146         git merge -m "merge -s -ours" -s ours FETCH_HEAD
 147 '
 148
 149 test_expect_success 'add main-sub5' '
 150         create subdir/main-sub5 &&
 151         git commit -m "main-sub5"
 152 '
 153
 154 test_expect_success 'add main6' '
 155         create main6 &&
 156         git commit -m "main6 boring"
 157 '
 158
 159 test_expect_success 'add main-sub7' '
 160         create subdir/main-sub7 &&
 161         git commit -m "main-sub7"
 162 '
 163
 164 test_expect_success 'fetch new subproj history' '
 165         git fetch ./subproj sub2 &&
 166         git branch sub2 FETCH_HEAD
 167 '
 168
 169 test_expect_success 'check if --message works for merge' '
 170         git subtree merge --prefix=subdir -m "Merged changes from subproject" sub2 &&
 171         check_equal ''"$(last_commit_message)"'' "Merged changes from subproject" &&
 172         undo
 173 '
 174
 175 test_expect_success 'check if --message for merge works with squash too' '
 176         git subtree merge --prefix subdir -m "Merged changes from subproject using squash" --squash sub2 &&
 177         check_equal ''"$(last_commit_message)"'' "Merged changes from subproject using squash" &&
 178         undo
 179 '
 180
 181 test_expect_success 'merge new subproj history into subdir' '
 182         git subtree merge --prefix=subdir FETCH_HEAD &&
 183         git branch pre-split &&
 184         check_equal ''"$(last_commit_message)"'' "Merge commit '"'"'"$(git rev-parse sub2)"'"'"' into mainline" &&
 185         undo
 186 '
 187
 188 test_expect_success 'Check that prefix argument is required for split' '
 189         echo "You must provide the --prefix option." > expected &&
 190         test_must_fail git subtree split > actual 2>&1 &&
 191         test_debug "printf '"'"'expected: '"'"'" &&
 192         test_debug "cat expected" &&
 193         test_debug "printf '"'"'actual: '"'"'" &&
 194         test_debug "cat actual" &&
 195         test_cmp expected actual &&
 196         rm -f expected actual
 197 '
 198
 199 test_expect_success 'Check that the <prefix> exists for a split' '
 200         echo "'"'"'non-existent-directory'"'"'" does not exist\; use "'"'"'git subtree add'"'"'" > expected &&
 201         test_must_fail git subtree split --prefix=non-existent-directory > actual 2>&1 &&
 202         test_debug "printf '"'"'expected: '"'"'" &&
 203         test_debug "cat expected" &&
 204         test_debug "printf '"'"'actual: '"'"'" &&
 205         test_debug "cat actual" &&
 206         test_cmp expected actual
 207 #       rm -f expected actual
 208 '
 209
 210 test_expect_success 'check if --message works for split+rejoin' '
 211         spl1=''"$(git subtree split --annotate='"'*'"' --prefix subdir --onto FETCH_HEAD --message "Split & rejoin" --rejoin)"'' &&
 212         git branch spl1 "$spl1" &&
 213         check_equal ''"$(last_commit_message)"'' "Split & rejoin" &&
 214         undo
 215 '
 216
 217 test_expect_success 'check split with --branch' '
 218         spl1=$(git subtree split --annotate='"'*'"' --prefix subdir --onto FETCH_HEAD --message "Split & rejoin" --rejoin) &&
 219         undo &&
 220         git subtree split --annotate='"'*'"' --prefix subdir --onto FETCH_HEAD --branch splitbr1 &&
 221         check_equal ''"$(git rev-parse splitbr1)"'' "$spl1"
 222 '
 223
 224 test_expect_success 'check hash of split' '
 225         spl1=$(git subtree split --prefix subdir) &&
 226         git subtree split --prefix subdir --branch splitbr1test &&
 227         check_equal ''"$(git rev-parse splitbr1test)"'' "$spl1" &&
 228         new_hash=$(git rev-parse splitbr1test~2) &&
 229         check_equal ''"$new_hash"'' "$subdir_hash"
 230 '
 231
 232 test_expect_success 'check split with --branch for an existing branch' '
 233         spl1=''"$(git subtree split --annotate='"'*'"' --prefix subdir --onto FETCH_HEAD --message "Split & rejoin" --rejoin)"'' &&
 234         undo &&
 235         git branch splitbr2 sub1 &&
 236         git subtree split --annotate='"'*'"' --prefix subdir --onto FETCH_HEAD --branch splitbr2 &&
 237         check_equal ''"$(git rev-parse splitbr2)"'' "$spl1"
 238 '
 239
 240 test_expect_success 'check split with --branch for an incompatible branch' '
 241         test_must_fail git subtree split --prefix subdir --onto FETCH_HEAD --branch subdir
 242 '
 243
 244 test_expect_success 'check split+rejoin' '
 245         spl1=''"$(git subtree split --annotate='"'*'"' --prefix subdir --onto FETCH_HEAD --message "Split & rejoin" --rejoin)"'' &&
 246         undo &&
 247         git subtree split --annotate='"'*'"' --prefix subdir --onto FETCH_HEAD --rejoin &&
 248         check_equal ''"$(last_commit_message)"'' "Split '"'"'subdir/'"'"' into commit '"'"'"$spl1"'"'"'"
 249 '
 250
 251 test_expect_success 'add main-sub8' '
 252         create subdir/main-sub8 &&
 253         git commit -m "main-sub8"
 254 '
 255
 256 # To the subproject!
 257 cd ./subproj
 258
 259 test_expect_success 'merge split into subproj' '
 260         git fetch .. spl1 &&
 261         git branch spl1 FETCH_HEAD &&
 262         git merge FETCH_HEAD
 263 '
 264
 265 test_expect_success 'add sub9' '
 266         create sub9 &&
 267         git commit -m "sub9"
 268 '
 269
 270 # Back to mainline
 271 cd ..
 272
 273 test_expect_success 'split for sub8' '
 274         split2=''"$(git subtree split --annotate='"'*'"' --prefix subdir/ --rejoin)"'' &&
 275         git branch split2 "$split2"
 276 '
 277
 278 test_expect_success 'add main-sub10' '
 279         create subdir/main-sub10 &&
 280         git commit -m "main-sub10"
 281 '
 282
 283 test_expect_success 'split for sub10' '
 284         spl3=''"$(git subtree split --annotate='"'*'"' --prefix subdir --rejoin)"'' &&
 285         git branch spl3 "$spl3"
 286 '
 287
 288 # To the subproject!
 289 cd ./subproj
 290
 291 test_expect_success 'merge split into subproj' '
 292         git fetch .. spl3 &&
 293         git branch spl3 FETCH_HEAD &&
 294         git merge FETCH_HEAD &&
 295         git branch subproj-merge-spl3
 296 '
 297
 298 chkm="main4 main6"
 299 chkms="main-sub10 main-sub5 main-sub7 main-sub8"
 300 chkms_sub=$(echo $chkms | multiline | sed 's,^,subdir/,' | fixnl)
 301 chks="sub1 sub2 sub3 sub9"
 302 chks_sub=$(echo $chks | multiline | sed 's,^,subdir/,' | fixnl)
 303
 304 test_expect_success 'make sure exactly the right set of files ends up in the subproj' '
 305         subfiles=''"$(git ls-files | fixnl)"'' &&
 306         check_equal "$subfiles" "$chkms $chks"
 307 '
 308
 309 test_expect_success 'make sure the subproj history *only* contains commits that affect the subdir' '
 310         allchanges=''"$(git log --name-only --pretty=format:'"''"' | sort | fixnl)"'' &&
 311         check_equal "$allchanges" "$chkms $chks"
 312 '
 313
 314 # Back to mainline
 315 cd ..
 316
 317 test_expect_success 'pull from subproj' '
 318         git fetch ./subproj subproj-merge-spl3 &&
 319         git branch subproj-merge-spl3 FETCH_HEAD &&
 320         git subtree pull --prefix=subdir ./subproj subproj-merge-spl3
 321 '
 322
 323 test_expect_success 'make sure exactly the right set of files ends up in the mainline' '
 324         mainfiles=''"$(git ls-files | fixnl)"'' &&
 325         check_equal "$mainfiles" "$chkm $chkms_sub $chks_sub"
 326 '
 327
 328 test_expect_success 'make sure each filename changed exactly once in the entire history' '
 329         # main-sub?? and /subdir/main-sub?? both change, because those are the
 330         # changes that were split into their own history.  And subdir/sub?? never
 331         # change, since they were *only* changed in the subtree branch.
 332         allchanges=''"$(git log --name-only --pretty=format:'"''"' | sort | fixnl)"'' &&
 333         check_equal "$allchanges" ''"$(echo $chkms $chkm $chks $chkms_sub | multiline | sort | fixnl)"''
 334 '
 335
 336 test_expect_success 'make sure the --rejoin commits never make it into subproj' '
 337         check_equal ''"$(git log --pretty=format:'"'%s'"' HEAD^2 | grep -i split)"'' ""
 338 '
 339
 340 test_expect_success 'make sure no "git subtree" tagged commits make it into subproj' '
 341         # They are meaningless to subproj since one side of the merge refers to the mainline
 342         check_equal ''"$(git log --pretty=format:'"'%s%n%b'"' HEAD^2 | grep "git-subtree.*:")"'' ""
 343 '
 344
 345 # prepare second pair of repositories
 346 mkdir test2
 347 cd test2
 348
 349 test_expect_success 'init main' '
 350         test_create_repo main
 351 '
 352
 353 cd main
 354
 355 test_expect_success 'add main1' '
 356         create main1 &&
 357         git commit -m "main1"
 358 '
 359
 360 cd ..
 361
 362 test_expect_success 'init sub' '
 363         test_create_repo sub
 364 '
 365
 366 cd sub
 367
 368 test_expect_success 'add sub2' '
 369         create sub2 &&
 370         git commit -m "sub2"
 371 '
 372
 373 cd ../main
 374
 375 # check if split can find proper base without --onto
 376
 377 test_expect_success 'add sub as subdir in main' '
 378         git fetch ../sub master &&
 379         git branch sub2 FETCH_HEAD &&
 380         git subtree add --prefix subdir sub2
 381 '
 382
 383 cd ../sub
 384
 385 test_expect_success 'add sub3' '
 386         create sub3 &&
 387         git commit -m "sub3"
 388 '
 389
 390 cd ../main
 391
 392 test_expect_success 'merge from sub' '
 393         git fetch ../sub master &&
 394         git branch sub3 FETCH_HEAD &&
 395         git subtree merge --prefix subdir sub3
 396 '
 397
 398 test_expect_success 'add main-sub4' '
 399         create subdir/main-sub4 &&
 400         git commit -m "main-sub4"
 401 '
 402
 403 test_expect_success 'split for main-sub4 without --onto' '
 404         git subtree split --prefix subdir --branch mainsub4
 405 '
 406
 407 # at this point, the new commit parent should be sub3 if it is not,
 408 # something went wrong (the "newparent" of "master~" commit should
 409 # have been sub3, but it was not, because its cache was not set to
 410 # itself)
 411
 412 test_expect_success 'check that the commit parent is sub3' '
 413         check_equal ''"$(git log --pretty=format:%P -1 mainsub4)"'' ''"$(git rev-parse sub3)"''
 414 '
 415
 416 test_expect_success 'add main-sub5' '
 417         mkdir subdir2 &&
 418         create subdir2/main-sub5 &&
 419         git commit -m "main-sub5"
 420 '
 421
 422 test_expect_success 'split for main-sub5 without --onto' '
 423         # also test that we still can split out an entirely new subtree
 424         # if the parent of the first commit in the tree is not empty,
 425         # then the new subtree has accidentally been attached to something
 426         git subtree split --prefix subdir2 --branch mainsub5 &&
 427         check_equal ''"$(git log --pretty=format:%P -1 mainsub5)"'' ""
 428 '
 429
 430 # make sure no patch changes more than one file.  The original set of commits
 431 # changed only one file each.  A multi-file change would imply that we pruned
 432 # commits too aggressively.
 433 joincommits()
 434 {
 435         commit=
 436         all=
 437         while read x y; do
 438                 #echo "{$x}" >&2
 439                 if [ -z "$x" ]; then
 440                         continue
 441                 elif [ "$x" = "commit:" ]; then
 442                         if [ -n "$commit" ]; then
 443                                 echo "$commit $all"
 444                                 all=
 445                         fi
 446                         commit="$y"
 447                 else
 448                         all="$all $y"
 449                 fi
 450         done
 451         echo "$commit $all"
 452 }
 453
 454 test_expect_success 'verify one file change per commit' '
 455         x= &&
 456         list=''"$(git log --pretty=format:'"'commit: %H'"' | joincommits)"'' &&
 457 #       test_debug "echo HERE" &&
 458 #       test_debug "echo ''"$list"''" &&
 459         (git log --pretty=format:'"'commit: %H'"' | joincommits |
 460         (       while read commit a b; do
 461                         test_debug "echo Verifying commit "''"$commit"''
 462                         test_debug "echo a: "''"$a"''
 463                         test_debug "echo b: "''"$b"''
 464                         check_equal "$b" ""
 465                         x=1
 466                 done
 467                 check_equal "$x" 1
 468         ))
 469 '
 470
 471 test_done