t/t4200-rerere.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Johannes E. Schindelin
   4 #
   5
   6 test_description='git rerere
   7
   8 ! [fifth] version1
   9  ! [first] first
  10   ! [fourth] version1
  11    ! [master] initial
  12     ! [second] prefer first over second
  13      ! [third] version2
  14 ------
  15      + [third] version2
  16 +      [fifth] version1
  17   +    [fourth] version1
  18 + +  + [third^] third
  19     -  [second] prefer first over second
  20  +  +  [first] first
  21     +  [second^] second
  22 ++++++ [master] initial
  23 '
  24
  25 . ./test-lib.sh
  26
  27 test_expect_success 'setup' '
  28         cat >a1 <<-\EOF &&
  29         Some title
  30         ==========
  31         Whether '\''tis nobler in the mind to suffer
  32         The slings and arrows of outrageous fortune,
  33         Or to take arms against a sea of troubles,
  34         And by opposing end them? To die: to sleep;
  35         No more; and by a sleep to say we end
  36         The heart-ache and the thousand natural shocks
  37         That flesh is heir to, '\''tis a consummation
  38         Devoutly to be wish'\''d.
  39         EOF
  40
  41         git add a1 &&
  42         test_tick &&
  43         git commit -q -a -m initial &&
  44
  45         cat >>a1 <<-\EOF &&
  46         Some title
  47         ==========
  48         To die, to sleep;
  49         To sleep: perchance to dream: ay, there'\''s the rub;
  50         For in that sleep of death what dreams may come
  51         When we have shuffled off this mortal coil,
  52         Must give us pause: there'\''s the respect
  53         That makes calamity of so long life;
  54         EOF
  55
  56         git checkout -b first &&
  57         test_tick &&
  58         git commit -q -a -m first &&
  59
  60         git checkout -b second master &&
  61         git show first:a1 |
  62         sed -e "s/To die, t/To die! T/" -e "s/Some title/Some Title/" >a1 &&
  63         echo "* END *" >>a1 &&
  64         test_tick &&
  65         git commit -q -a -m second
  66 '
  67
  68 test_expect_success 'nothing recorded without rerere' '
  69         rm -rf .git/rr-cache &&
  70         git config rerere.enabled false &&
  71         test_must_fail git merge first &&
  72         ! test -d .git/rr-cache
  73 '
  74
  75 test_expect_success 'activate rerere, old style (conflicting merge)' '
  76         git reset --hard &&
  77         mkdir .git/rr-cache &&
  78         test_might_fail git config --unset rerere.enabled &&
  79         test_must_fail git merge first &&
  80
  81         sha1=$("$PERL_PATH" -pe "s/     .*//" .git/MERGE_RR) &&
  82         rr=.git/rr-cache/$sha1 &&
  83         grep "^=======\$" $rr/preimage &&
  84         ! test -f $rr/postimage &&
  85         ! test -f $rr/thisimage
  86 '
  87
  88 test_expect_success 'rerere.enabled works, too' '
  89         rm -rf .git/rr-cache &&
  90         git config rerere.enabled true &&
  91         git reset --hard &&
  92         test_must_fail git merge first &&
  93
  94         sha1=$("$PERL_PATH" -pe "s/     .*//" .git/MERGE_RR) &&
  95         rr=.git/rr-cache/$sha1 &&
  96         grep ^=======$ $rr/preimage
  97 '
  98
  99 test_expect_success 'set up rr-cache' '
 100         rm -rf .git/rr-cache &&
 101         git config rerere.enabled true &&
 102         git reset --hard &&
 103         test_must_fail git merge first &&
 104         sha1=$("$PERL_PATH" -pe "s/     .*//" .git/MERGE_RR) &&
 105         rr=.git/rr-cache/$sha1
 106 '
 107
 108 test_expect_success 'rr-cache looks sane' '
 109         # no postimage or thisimage yet
 110         ! test -f $rr/postimage &&
 111         ! test -f $rr/thisimage &&
 112
 113         # preimage has right number of lines
 114         cnt=$(sed -ne "/^<<<<<<</,/^>>>>>>>/p" $rr/preimage | wc -l) &&
 115         echo $cnt &&
 116         test $cnt = 13
 117 '
 118
 119 test_expect_success 'rerere diff' '
 120         git show first:a1 >a1 &&
 121         cat >expect <<-\EOF &&
 122         --- a/a1
 123         +++ b/a1
 124         @@ -1,4 +1,4 @@
 125         -Some Title
 126         +Some title
 127          ==========
 128          Whether '\''tis nobler in the mind to suffer
 129          The slings and arrows of outrageous fortune,
 130         @@ -8,21 +8,11 @@
 131          The heart-ache and the thousand natural shocks
 132          That flesh is heir to, '\''tis a consummation
 133          Devoutly to be wish'\''d.
 134         -<<<<<<<
 135         -Some Title
 136         -==========
 137         -To die! To sleep;
 138         -=======
 139          Some title
 140          ==========
 141          To die, to sleep;
 142         ->>>>>>>
 143          To sleep: perchance to dream: ay, there'\''s the rub;
 144          For in that sleep of death what dreams may come
 145          When we have shuffled off this mortal coil,
 146          Must give us pause: there'\''s the respect
 147          That makes calamity of so long life;
 148         -<<<<<<<
 149         -=======
 150         -* END *
 151         ->>>>>>>
 152         EOF
 153         git rerere diff >out &&
 154         test_cmp expect out
 155 '
 156
 157 test_expect_success 'rerere status' '
 158         echo a1 >expect &&
 159         git rerere status >out &&
 160         test_cmp expect out
 161 '
 162
 163 test_expect_success 'first postimage wins' '
 164         git show first:a1 | sed "s/To die: t/To die! T/" >expect &&
 165
 166         git commit -q -a -m "prefer first over second" &&
 167         test -f $rr/postimage &&
 168
 169         oldmtimepost=$(test-chmtime -v -60 $rr/postimage | cut -f 1) &&
 170
 171         git checkout -b third master &&
 172         git show second^:a1 | sed "s/To die: t/To die! T/" >a1 &&
 173         git commit -q -a -m third &&
 174
 175         test_must_fail git pull . first &&
 176         # rerere kicked in
 177         ! grep "^=======\$" a1 &&
 178         test_cmp expect a1
 179 '
 180
 181 test_expect_success 'rerere updates postimage timestamp' '
 182         newmtimepost=$(test-chmtime -v +0 $rr/postimage | cut -f 1) &&
 183         test $oldmtimepost -lt $newmtimepost
 184 '
 185
 186 test_expect_success 'rerere clear' '
 187         rm $rr/postimage &&
 188         echo "$sha1     a1" | "$PERL_PATH" -pe "y/\012/\000/" >.git/MERGE_RR &&
 189         git rerere clear &&
 190         ! test -d $rr
 191 '
 192
 193 test_expect_success 'set up for garbage collection tests' '
 194         mkdir -p $rr &&
 195         echo Hello >$rr/preimage &&
 196         echo World >$rr/postimage &&
 197
 198         sha2=4000000000000000000000000000000000000000 &&
 199         rr2=.git/rr-cache/$sha2 &&
 200         mkdir $rr2 &&
 201         echo Hello >$rr2/preimage &&
 202
 203         almost_15_days_ago=$((60-15*86400)) &&
 204         just_over_15_days_ago=$((-1-15*86400)) &&
 205         almost_60_days_ago=$((60-60*86400)) &&
 206         just_over_60_days_ago=$((-1-60*86400)) &&
 207
 208         test-chmtime =$just_over_60_days_ago $rr/preimage &&
 209         test-chmtime =$almost_60_days_ago $rr/postimage &&
 210         test-chmtime =$almost_15_days_ago $rr2/preimage
 211 '
 212
 213 test_expect_success 'gc preserves young or recently used records' '
 214         git rerere gc &&
 215         test -f $rr/preimage &&
 216         test -f $rr2/preimage
 217 '
 218
 219 test_expect_success 'old records rest in peace' '
 220         test-chmtime =$just_over_60_days_ago $rr/postimage &&
 221         test-chmtime =$just_over_15_days_ago $rr2/preimage &&
 222         git rerere gc &&
 223         ! test -f $rr/preimage &&
 224         ! test -f $rr2/preimage
 225 '
 226
 227 test_expect_success 'setup: file2 added differently in two branches' '
 228         git reset --hard &&
 229
 230         git checkout -b fourth &&
 231         echo Hallo >file2 &&
 232         git add file2 &&
 233         test_tick &&
 234         git commit -m version1 &&
 235
 236         git checkout third &&
 237         echo Bello >file2 &&
 238         git add file2 &&
 239         test_tick &&
 240         git commit -m version2 &&
 241
 242         test_must_fail git merge fourth &&
 243         echo Cello >file2 &&
 244         git add file2 &&
 245         git commit -m resolution
 246 '
 247
 248 test_expect_success 'resolution was recorded properly' '
 249         echo Cello >expected &&
 250
 251         git reset --hard HEAD~2 &&
 252         git checkout -b fifth &&
 253
 254         echo Hallo >file3 &&
 255         git add file3 &&
 256         test_tick &&
 257         git commit -m version1 &&
 258
 259         git checkout third &&
 260         echo Bello >file3 &&
 261         git add file3 &&
 262         test_tick &&
 263         git commit -m version2 &&
 264         git tag version2 &&
 265
 266         test_must_fail git merge fifth &&
 267         test_cmp expected file3 &&
 268         test_must_fail git update-index --refresh
 269 '
 270
 271 test_expect_success 'rerere.autoupdate' '
 272         git config rerere.autoupdate true &&
 273         git reset --hard &&
 274         git checkout version2 &&
 275         test_must_fail git merge fifth &&
 276         git update-index --refresh
 277 '
 278
 279 test_expect_success 'merge --rerere-autoupdate' '
 280         test_might_fail git config --unset rerere.autoupdate &&
 281         git reset --hard &&
 282         git checkout version2 &&
 283         test_must_fail git merge --rerere-autoupdate fifth &&
 284         git update-index --refresh
 285 '
 286
 287 test_expect_success 'merge --no-rerere-autoupdate' '
 288         headblob=$(git rev-parse version2:file3) &&
 289         mergeblob=$(git rev-parse fifth:file3) &&
 290         cat >expected <<-EOF &&
 291         100644 $headblob 2      file3
 292         100644 $mergeblob 3     file3
 293         EOF
 294
 295         git config rerere.autoupdate true &&
 296         git reset --hard &&
 297         git checkout version2 &&
 298         test_must_fail git merge --no-rerere-autoupdate fifth &&
 299         git ls-files -u >actual &&
 300         test_cmp expected actual
 301 '
 302
 303 test_expect_success 'set up an unresolved merge' '
 304         headblob=$(git rev-parse version2:file3) &&
 305         mergeblob=$(git rev-parse fifth:file3) &&
 306         cat >expected.unresolved <<-EOF &&
 307         100644 $headblob 2      file3
 308         100644 $mergeblob 3     file3
 309         EOF
 310
 311         test_might_fail git config --unset rerere.autoupdate &&
 312         git reset --hard &&
 313         git checkout version2 &&
 314         fifth=$(git rev-parse fifth) &&
 315         echo "$fifth            branch 'fifth' of ." |
 316         git fmt-merge-msg >msg &&
 317         ancestor=$(git merge-base version2 fifth) &&
 318         test_must_fail git merge-recursive "$ancestor" -- HEAD fifth &&
 319
 320         git ls-files --stage >failedmerge &&
 321         cp file3 file3.conflict &&
 322
 323         git ls-files -u >actual &&
 324         test_cmp expected.unresolved actual
 325 '
 326
 327 test_expect_success 'explicit rerere' '
 328         test_might_fail git config --unset rerere.autoupdate &&
 329         git rm -fr --cached . &&
 330         git update-index --index-info <failedmerge &&
 331         cp file3.conflict file3 &&
 332         test_must_fail git update-index --refresh -q &&
 333
 334         git rerere &&
 335         git ls-files -u >actual &&
 336         test_cmp expected.unresolved actual
 337 '
 338
 339 test_expect_success 'explicit rerere with autoupdate' '
 340         git config rerere.autoupdate true &&
 341         git rm -fr --cached . &&
 342         git update-index --index-info <failedmerge &&
 343         cp file3.conflict file3 &&
 344         test_must_fail git update-index --refresh -q &&
 345
 346         git rerere &&
 347         git update-index --refresh
 348 '
 349
 350 test_expect_success 'explicit rerere --rerere-autoupdate overrides' '
 351         git config rerere.autoupdate false &&
 352         git rm -fr --cached . &&
 353         git update-index --index-info <failedmerge &&
 354         cp file3.conflict file3 &&
 355         git rerere &&
 356         git ls-files -u >actual1 &&
 357
 358         git rm -fr --cached . &&
 359         git update-index --index-info <failedmerge &&
 360         cp file3.conflict file3 &&
 361         git rerere --rerere-autoupdate &&
 362         git update-index --refresh &&
 363
 364         git rm -fr --cached . &&
 365         git update-index --index-info <failedmerge &&
 366         cp file3.conflict file3 &&
 367         git rerere --rerere-autoupdate --no-rerere-autoupdate &&
 368         git ls-files -u >actual2 &&
 369
 370         git rm -fr --cached . &&
 371         git update-index --index-info <failedmerge &&
 372         cp file3.conflict file3 &&
 373         git rerere --rerere-autoupdate --no-rerere-autoupdate --rerere-autoupdate &&
 374         git update-index --refresh &&
 375
 376         test_cmp expected.unresolved actual1 &&
 377         test_cmp expected.unresolved actual2
 378 '
 379
 380 test_expect_success 'rerere --no-no-rerere-autoupdate' '
 381         git rm -fr --cached . &&
 382         git update-index --index-info <failedmerge &&
 383         cp file3.conflict file3 &&
 384         test_must_fail git rerere --no-no-rerere-autoupdate 2>err &&
 385         grep [Uu]sage err &&
 386         test_must_fail git update-index --refresh
 387 '
 388
 389 test_expect_success 'rerere -h' '
 390         test_must_fail git rerere -h >help &&
 391         grep [Uu]sage help
 392 '
 393
 394 test_done