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