Andrew's git / gitweb.git / t/t5526-fetch-submodules.sh
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t / t5526-fetch-submodules.shon commit checkout: advice how to get out of detached HEAD mode (af9ded5)
   1#!/bin/sh
   2# Copyright (c) 2010, Jens Lehmann
   3
   4test_description='Recursive "git fetch" for submodules'
   5
   6. ./test-lib.sh
   7
   8pwd=$(pwd)
   9
  10add_upstream_commit() {
  11        (
  12                cd submodule &&
  13                head1=$(git rev-parse --short HEAD) &&
  14                echo new >> subfile &&
  15                test_tick &&
  16                git add subfile &&
  17                git commit -m new subfile &&
  18                head2=$(git rev-parse --short HEAD) &&
  19                echo "Fetching submodule submodule" > ../expect.err &&
  20                echo "From $pwd/submodule" >> ../expect.err &&
  21                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err
  22        ) &&
  23        (
  24                cd deepsubmodule &&
  25                head1=$(git rev-parse --short HEAD) &&
  26                echo new >> deepsubfile &&
  27                test_tick &&
  28                git add deepsubfile &&
  29                git commit -m new deepsubfile &&
  30                head2=$(git rev-parse --short HEAD) &&
  31                echo "Fetching submodule submodule/subdir/deepsubmodule" >> ../expect.err
  32                echo "From $pwd/deepsubmodule" >> ../expect.err &&
  33                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err
  34        )
  35}
  36
  37test_expect_success setup '
  38        mkdir deepsubmodule &&
  39        (
  40                cd deepsubmodule &&
  41                git init &&
  42                echo deepsubcontent > deepsubfile &&
  43                git add deepsubfile &&
  44                git commit -m new deepsubfile
  45        ) &&
  46        mkdir submodule &&
  47        (
  48                cd submodule &&
  49                git init &&
  50                echo subcontent > subfile &&
  51                git add subfile &&
  52                git submodule add "$pwd/deepsubmodule" subdir/deepsubmodule &&
  53                git commit -a -m new
  54        ) &&
  55        git submodule add "$pwd/submodule" submodule &&
  56        git commit -am initial &&
  57        git clone . downstream &&
  58        (
  59                cd downstream &&
  60                git submodule update --init --recursive
  61        )
  62'
  63
  64test_expect_success "fetch --recurse-submodules recurses into submodules" '
  65        add_upstream_commit &&
  66        (
  67                cd downstream &&
  68                git fetch --recurse-submodules >../actual.out 2>../actual.err
  69        ) &&
  70        test_must_be_empty actual.out &&
  71        test_i18ncmp expect.err actual.err
  72'
  73
  74test_expect_success "submodule.recurse option triggers recursive fetch" '
  75        add_upstream_commit &&
  76        (
  77                cd downstream &&
  78                git -c submodule.recurse fetch >../actual.out 2>../actual.err
  79        ) &&
  80        test_must_be_empty actual.out &&
  81        test_i18ncmp expect.err actual.err
  82'
  83
  84test_expect_success "fetch --recurse-submodules -j2 has the same output behaviour" '
  85        add_upstream_commit &&
  86        (
  87                cd downstream &&
  88                GIT_TRACE="$TRASH_DIRECTORY/trace.out" git fetch --recurse-submodules -j2 2>../actual.err
  89        ) &&
  90        test_must_be_empty actual.out &&
  91        test_i18ncmp expect.err actual.err &&
  92        grep "2 tasks" trace.out
  93'
  94
  95test_expect_success "fetch alone only fetches superproject" '
  96        add_upstream_commit &&
  97        (
  98                cd downstream &&
  99                git fetch >../actual.out 2>../actual.err
 100        ) &&
 101        test_must_be_empty actual.out &&
 102        test_must_be_empty actual.err
 103'
 104
 105test_expect_success "fetch --no-recurse-submodules only fetches superproject" '
 106        (
 107                cd downstream &&
 108                git fetch --no-recurse-submodules >../actual.out 2>../actual.err
 109        ) &&
 110        test_must_be_empty actual.out &&
 111        test_must_be_empty actual.err
 112'
 113
 114test_expect_success "using fetchRecurseSubmodules=true in .gitmodules recurses into submodules" '
 115        (
 116                cd downstream &&
 117                git config -f .gitmodules submodule.submodule.fetchRecurseSubmodules true &&
 118                git fetch >../actual.out 2>../actual.err
 119        ) &&
 120        test_must_be_empty actual.out &&
 121        test_i18ncmp expect.err actual.err
 122'
 123
 124test_expect_success "--no-recurse-submodules overrides .gitmodules config" '
 125        add_upstream_commit &&
 126        (
 127                cd downstream &&
 128                git fetch --no-recurse-submodules >../actual.out 2>../actual.err
 129        ) &&
 130        test_must_be_empty actual.out &&
 131        test_must_be_empty actual.err
 132'
 133
 134test_expect_success "using fetchRecurseSubmodules=false in .git/config overrides setting in .gitmodules" '
 135        (
 136                cd downstream &&
 137                git config submodule.submodule.fetchRecurseSubmodules false &&
 138                git fetch >../actual.out 2>../actual.err
 139        ) &&
 140        test_must_be_empty actual.out &&
 141        test_must_be_empty actual.err
 142'
 143
 144test_expect_success "--recurse-submodules overrides fetchRecurseSubmodules setting from .git/config" '
 145        (
 146                cd downstream &&
 147                git fetch --recurse-submodules >../actual.out 2>../actual.err &&
 148                git config --unset -f .gitmodules submodule.submodule.fetchRecurseSubmodules &&
 149                git config --unset submodule.submodule.fetchRecurseSubmodules
 150        ) &&
 151        test_must_be_empty actual.out &&
 152        test_i18ncmp expect.err actual.err
 153'
 154
 155test_expect_success "--quiet propagates to submodules" '
 156        (
 157                cd downstream &&
 158                git fetch --recurse-submodules --quiet >../actual.out 2>../actual.err
 159        ) &&
 160        test_must_be_empty actual.out &&
 161        test_must_be_empty actual.err
 162'
 163
 164test_expect_success "--quiet propagates to parallel submodules" '
 165        (
 166                cd downstream &&
 167                git fetch --recurse-submodules -j 2 --quiet  >../actual.out 2>../actual.err
 168        ) &&
 169        test_must_be_empty actual.out &&
 170        test_must_be_empty actual.err
 171'
 172
 173test_expect_success "--dry-run propagates to submodules" '
 174        add_upstream_commit &&
 175        (
 176                cd downstream &&
 177                git fetch --recurse-submodules --dry-run >../actual.out 2>../actual.err
 178        ) &&
 179        test_must_be_empty actual.out &&
 180        test_i18ncmp expect.err actual.err
 181'
 182
 183test_expect_success "Without --dry-run propagates to submodules" '
 184        (
 185                cd downstream &&
 186                git fetch --recurse-submodules >../actual.out 2>../actual.err
 187        ) &&
 188        test_must_be_empty actual.out &&
 189        test_i18ncmp expect.err actual.err
 190'
 191
 192test_expect_success "recurseSubmodules=true propagates into submodules" '
 193        add_upstream_commit &&
 194        (
 195                cd downstream &&
 196                git config fetch.recurseSubmodules true &&
 197                git fetch >../actual.out 2>../actual.err
 198        ) &&
 199        test_must_be_empty actual.out &&
 200        test_i18ncmp expect.err actual.err
 201'
 202
 203test_expect_success "--recurse-submodules overrides config in submodule" '
 204        add_upstream_commit &&
 205        (
 206                cd downstream &&
 207                (
 208                        cd submodule &&
 209                        git config fetch.recurseSubmodules false
 210                ) &&
 211                git fetch --recurse-submodules >../actual.out 2>../actual.err
 212        ) &&
 213        test_must_be_empty actual.out &&
 214        test_i18ncmp expect.err actual.err
 215'
 216
 217test_expect_success "--no-recurse-submodules overrides config setting" '
 218        add_upstream_commit &&
 219        (
 220                cd downstream &&
 221                git config fetch.recurseSubmodules true &&
 222                git fetch --no-recurse-submodules >../actual.out 2>../actual.err
 223        ) &&
 224        test_must_be_empty actual.out &&
 225        test_must_be_empty actual.err
 226'
 227
 228test_expect_success "Recursion doesn't happen when no new commits are fetched in the superproject" '
 229        (
 230                cd downstream &&
 231                (
 232                        cd submodule &&
 233                        git config --unset fetch.recurseSubmodules
 234                ) &&
 235                git config --unset fetch.recurseSubmodules &&
 236                git fetch >../actual.out 2>../actual.err
 237        ) &&
 238        test_must_be_empty actual.out &&
 239        test_must_be_empty actual.err
 240'
 241
 242test_expect_success "Recursion stops when no new submodule commits are fetched" '
 243        head1=$(git rev-parse --short HEAD) &&
 244        git add submodule &&
 245        git commit -m "new submodule" &&
 246        head2=$(git rev-parse --short HEAD) &&
 247        echo "From $pwd/." > expect.err.sub &&
 248        echo "   $head1..$head2  master     -> origin/master" >>expect.err.sub &&
 249        head -3 expect.err >> expect.err.sub &&
 250        (
 251                cd downstream &&
 252                git fetch >../actual.out 2>../actual.err
 253        ) &&
 254        test_i18ncmp expect.err.sub actual.err &&
 255        test_must_be_empty actual.out
 256'
 257
 258test_expect_success "Recursion doesn't happen when new superproject commits don't change any submodules" '
 259        add_upstream_commit &&
 260        head1=$(git rev-parse --short HEAD) &&
 261        echo a > file &&
 262        git add file &&
 263        git commit -m "new file" &&
 264        head2=$(git rev-parse --short HEAD) &&
 265        echo "From $pwd/." > expect.err.file &&
 266        echo "   $head1..$head2  master     -> origin/master" >> expect.err.file &&
 267        (
 268                cd downstream &&
 269                git fetch >../actual.out 2>../actual.err
 270        ) &&
 271        test_must_be_empty actual.out &&
 272        test_i18ncmp expect.err.file actual.err
 273'
 274
 275test_expect_success "Recursion picks up config in submodule" '
 276        (
 277                cd downstream &&
 278                git fetch --recurse-submodules &&
 279                (
 280                        cd submodule &&
 281                        git config fetch.recurseSubmodules true
 282                )
 283        ) &&
 284        add_upstream_commit &&
 285        head1=$(git rev-parse --short HEAD) &&
 286        git add submodule &&
 287        git commit -m "new submodule" &&
 288        head2=$(git rev-parse --short HEAD) &&
 289        echo "From $pwd/." > expect.err.sub &&
 290        echo "   $head1..$head2  master     -> origin/master" >> expect.err.sub &&
 291        cat expect.err >> expect.err.sub &&
 292        (
 293                cd downstream &&
 294                git fetch >../actual.out 2>../actual.err &&
 295                (
 296                        cd submodule &&
 297                        git config --unset fetch.recurseSubmodules
 298                )
 299        ) &&
 300        test_i18ncmp expect.err.sub actual.err &&
 301        test_must_be_empty actual.out
 302'
 303
 304test_expect_success "Recursion picks up all submodules when necessary" '
 305        add_upstream_commit &&
 306        (
 307                cd submodule &&
 308                (
 309                        cd subdir/deepsubmodule &&
 310                        git fetch &&
 311                        git checkout -q FETCH_HEAD
 312                ) &&
 313                head1=$(git rev-parse --short HEAD^) &&
 314                git add subdir/deepsubmodule &&
 315                git commit -m "new deepsubmodule" &&
 316                head2=$(git rev-parse --short HEAD) &&
 317                echo "Fetching submodule submodule" > ../expect.err.sub &&
 318                echo "From $pwd/submodule" >> ../expect.err.sub &&
 319                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err.sub
 320        ) &&
 321        head1=$(git rev-parse --short HEAD) &&
 322        git add submodule &&
 323        git commit -m "new submodule" &&
 324        head2=$(git rev-parse --short HEAD) &&
 325        echo "From $pwd/." > expect.err.2 &&
 326        echo "   $head1..$head2  master     -> origin/master" >> expect.err.2 &&
 327        cat expect.err.sub >> expect.err.2 &&
 328        tail -3 expect.err >> expect.err.2 &&
 329        (
 330                cd downstream &&
 331                git fetch >../actual.out 2>../actual.err
 332        ) &&
 333        test_i18ncmp expect.err.2 actual.err &&
 334        test_must_be_empty actual.out
 335'
 336
 337test_expect_success "'--recurse-submodules=on-demand' doesn't recurse when no new commits are fetched in the superproject (and ignores config)" '
 338        add_upstream_commit &&
 339        (
 340                cd submodule &&
 341                (
 342                        cd subdir/deepsubmodule &&
 343                        git fetch &&
 344                        git checkout -q FETCH_HEAD
 345                ) &&
 346                head1=$(git rev-parse --short HEAD^) &&
 347                git add subdir/deepsubmodule &&
 348                git commit -m "new deepsubmodule" &&
 349                head2=$(git rev-parse --short HEAD) &&
 350                echo Fetching submodule submodule > ../expect.err.sub &&
 351                echo "From $pwd/submodule" >> ../expect.err.sub &&
 352                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err.sub
 353        ) &&
 354        (
 355                cd downstream &&
 356                git config fetch.recurseSubmodules true &&
 357                git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err &&
 358                git config --unset fetch.recurseSubmodules
 359        ) &&
 360        test_must_be_empty actual.out &&
 361        test_must_be_empty actual.err
 362'
 363
 364test_expect_success "'--recurse-submodules=on-demand' recurses as deep as necessary (and ignores config)" '
 365        head1=$(git rev-parse --short HEAD) &&
 366        git add submodule &&
 367        git commit -m "new submodule" &&
 368        head2=$(git rev-parse --short HEAD) &&
 369        tail -3 expect.err > expect.err.deepsub &&
 370        echo "From $pwd/." > expect.err &&
 371        echo "   $head1..$head2  master     -> origin/master" >>expect.err &&
 372        cat expect.err.sub >> expect.err &&
 373        cat expect.err.deepsub >> expect.err &&
 374        (
 375                cd downstream &&
 376                git config fetch.recurseSubmodules false &&
 377                (
 378                        cd submodule &&
 379                        git config -f .gitmodules submodule.subdir/deepsubmodule.fetchRecursive false
 380                ) &&
 381                git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err &&
 382                git config --unset fetch.recurseSubmodules &&
 383                (
 384                        cd submodule &&
 385                        git config --unset -f .gitmodules submodule.subdir/deepsubmodule.fetchRecursive
 386                )
 387        ) &&
 388        test_must_be_empty actual.out &&
 389        test_i18ncmp expect.err actual.err
 390'
 391
 392test_expect_success "'--recurse-submodules=on-demand' stops when no new submodule commits are found in the superproject (and ignores config)" '
 393        add_upstream_commit &&
 394        head1=$(git rev-parse --short HEAD) &&
 395        echo a >> file &&
 396        git add file &&
 397        git commit -m "new file" &&
 398        head2=$(git rev-parse --short HEAD) &&
 399        echo "From $pwd/." > expect.err.file &&
 400        echo "   $head1..$head2  master     -> origin/master" >> expect.err.file &&
 401        (
 402                cd downstream &&
 403                git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err
 404        ) &&
 405        test_must_be_empty actual.out &&
 406        test_i18ncmp expect.err.file actual.err
 407'
 408
 409test_expect_success "'fetch.recurseSubmodules=on-demand' overrides global config" '
 410        (
 411                cd downstream &&
 412                git fetch --recurse-submodules
 413        ) &&
 414        add_upstream_commit &&
 415        git config --global fetch.recurseSubmodules false &&
 416        head1=$(git rev-parse --short HEAD) &&
 417        git add submodule &&
 418        git commit -m "new submodule" &&
 419        head2=$(git rev-parse --short HEAD) &&
 420        echo "From $pwd/." > expect.err.2 &&
 421        echo "   $head1..$head2  master     -> origin/master" >>expect.err.2 &&
 422        head -3 expect.err >> expect.err.2 &&
 423        (
 424                cd downstream &&
 425                git config fetch.recurseSubmodules on-demand &&
 426                git fetch >../actual.out 2>../actual.err
 427        ) &&
 428        git config --global --unset fetch.recurseSubmodules &&
 429        (
 430                cd downstream &&
 431                git config --unset fetch.recurseSubmodules
 432        ) &&
 433        test_must_be_empty actual.out &&
 434        test_i18ncmp expect.err.2 actual.err
 435'
 436
 437test_expect_success "'submodule.<sub>.fetchRecurseSubmodules=on-demand' overrides fetch.recurseSubmodules" '
 438        (
 439                cd downstream &&
 440                git fetch --recurse-submodules
 441        ) &&
 442        add_upstream_commit &&
 443        git config fetch.recurseSubmodules false &&
 444        head1=$(git rev-parse --short HEAD) &&
 445        git add submodule &&
 446        git commit -m "new submodule" &&
 447        head2=$(git rev-parse --short HEAD) &&
 448        echo "From $pwd/." > expect.err.2 &&
 449        echo "   $head1..$head2  master     -> origin/master" >>expect.err.2 &&
 450        head -3 expect.err >> expect.err.2 &&
 451        (
 452                cd downstream &&
 453                git config submodule.submodule.fetchRecurseSubmodules on-demand &&
 454                git fetch >../actual.out 2>../actual.err
 455        ) &&
 456        git config --unset fetch.recurseSubmodules &&
 457        (
 458                cd downstream &&
 459                git config --unset submodule.submodule.fetchRecurseSubmodules
 460        ) &&
 461        test_must_be_empty actual.out &&
 462        test_i18ncmp expect.err.2 actual.err
 463'
 464
 465test_expect_success "don't fetch submodule when newly recorded commits are already present" '
 466        (
 467                cd submodule &&
 468                git checkout -q HEAD^^
 469        ) &&
 470        head1=$(git rev-parse --short HEAD) &&
 471        git add submodule &&
 472        git commit -m "submodule rewound" &&
 473        head2=$(git rev-parse --short HEAD) &&
 474        echo "From $pwd/." > expect.err &&
 475        echo "   $head1..$head2  master     -> origin/master" >> expect.err &&
 476        (
 477                cd downstream &&
 478                git fetch >../actual.out 2>../actual.err
 479        ) &&
 480        test_must_be_empty actual.out &&
 481        test_i18ncmp expect.err actual.err &&
 482        (
 483                cd submodule &&
 484                git checkout -q master
 485        )
 486'
 487
 488test_expect_success "'fetch.recurseSubmodules=on-demand' works also without .gitmodules entry" '
 489        (
 490                cd downstream &&
 491                git fetch --recurse-submodules
 492        ) &&
 493        add_upstream_commit &&
 494        head1=$(git rev-parse --short HEAD) &&
 495        git add submodule &&
 496        git rm .gitmodules &&
 497        git commit -m "new submodule without .gitmodules" &&
 498        head2=$(git rev-parse --short HEAD) &&
 499        echo "From $pwd/." >expect.err.2 &&
 500        echo "   $head1..$head2  master     -> origin/master" >>expect.err.2 &&
 501        head -3 expect.err >>expect.err.2 &&
 502        (
 503                cd downstream &&
 504                rm .gitmodules &&
 505                git config fetch.recurseSubmodules on-demand &&
 506                # fake submodule configuration to avoid skipping submodule handling
 507                git config -f .gitmodules submodule.fake.path fake &&
 508                git config -f .gitmodules submodule.fake.url fakeurl &&
 509                git add .gitmodules &&
 510                git config --unset submodule.submodule.url &&
 511                git fetch >../actual.out 2>../actual.err &&
 512                # cleanup
 513                git config --unset fetch.recurseSubmodules &&
 514                git reset --hard
 515        ) &&
 516        test_must_be_empty actual.out &&
 517        test_i18ncmp expect.err.2 actual.err &&
 518        git checkout HEAD^ -- .gitmodules &&
 519        git add .gitmodules &&
 520        git commit -m "new submodule restored .gitmodules"
 521'
 522
 523test_expect_success 'fetching submodules respects parallel settings' '
 524        git config fetch.recurseSubmodules true &&
 525        (
 526                cd downstream &&
 527                GIT_TRACE=$(pwd)/trace.out git fetch &&
 528                grep "1 tasks" trace.out &&
 529                GIT_TRACE=$(pwd)/trace.out git fetch --jobs 7 &&
 530                grep "7 tasks" trace.out &&
 531                git config submodule.fetchJobs 8 &&
 532                GIT_TRACE=$(pwd)/trace.out git fetch &&
 533                grep "8 tasks" trace.out &&
 534                GIT_TRACE=$(pwd)/trace.out git fetch --jobs 9 &&
 535                grep "9 tasks" trace.out
 536        )
 537'
 538
 539test_expect_success 'fetching submodule into a broken repository' '
 540        # Prepare src and src/sub nested in it
 541        git init src &&
 542        (
 543                cd src &&
 544                git init sub &&
 545                git -C sub commit --allow-empty -m "initial in sub" &&
 546                git submodule add -- ./sub sub &&
 547                git commit -m "initial in top"
 548        ) &&
 549
 550        # Clone the old-fashoned way
 551        git clone src dst &&
 552        git -C dst clone ../src/sub sub &&
 553
 554        # Make sure that old-fashoned layout is still supported
 555        git -C dst status &&
 556
 557        # "diff" would find no change
 558        git -C dst diff --exit-code &&
 559
 560        # Recursive-fetch works fine
 561        git -C dst fetch --recurse-submodules &&
 562
 563        # Break the receiving submodule
 564        rm -f dst/sub/.git/HEAD &&
 565
 566        # NOTE: without the fix the following tests will recurse forever!
 567        # They should terminate with an error.
 568
 569        test_must_fail git -C dst status &&
 570        test_must_fail git -C dst diff &&
 571        test_must_fail git -C dst fetch --recurse-submodules
 572'
 573
 574test_expect_success "fetch new commits when submodule got renamed" '
 575        git clone . downstream_rename &&
 576        (
 577                cd downstream_rename &&
 578                git submodule update --init --recursive &&
 579                git checkout -b rename &&
 580                git mv submodule submodule_renamed &&
 581                (
 582                        cd submodule_renamed &&
 583                        git checkout -b rename_sub &&
 584                        echo a >a &&
 585                        git add a &&
 586                        git commit -ma &&
 587                        git push origin rename_sub &&
 588                        git rev-parse HEAD >../../expect
 589                ) &&
 590                git add submodule_renamed &&
 591                git commit -m "update renamed submodule" &&
 592                git push origin rename
 593        ) &&
 594        (
 595                cd downstream &&
 596                git fetch --recurse-submodules=on-demand &&
 597                (
 598                        cd submodule &&
 599                        git rev-parse origin/rename_sub >../../actual
 600                )
 601        ) &&
 602        test_cmp expect actual
 603'
 604
 605test_expect_success "fetch new submodule commits on-demand outside standard refspec" '
 606        # add a second submodule and ensure it is around in downstream first
 607        git clone submodule sub1 &&
 608        git submodule add ./sub1 &&
 609        git commit -m "adding a second submodule" &&
 610        git -C downstream pull &&
 611        git -C downstream submodule update --init --recursive &&
 612
 613        git checkout --detach &&
 614
 615        C=$(git -C submodule commit-tree -m "new change outside refs/heads" HEAD^{tree}) &&
 616        git -C submodule update-ref refs/changes/1 $C &&
 617        git update-index --cacheinfo 160000 $C submodule &&
 618        test_tick &&
 619
 620        D=$(git -C sub1 commit-tree -m "new change outside refs/heads" HEAD^{tree}) &&
 621        git -C sub1 update-ref refs/changes/2 $D &&
 622        git update-index --cacheinfo 160000 $D sub1 &&
 623
 624        git commit -m "updated submodules outside of refs/heads" &&
 625        E=$(git rev-parse HEAD) &&
 626        git update-ref refs/changes/3 $E &&
 627        (
 628                cd downstream &&
 629                git fetch --recurse-submodules origin refs/changes/3:refs/heads/my_branch &&
 630                git -C submodule cat-file -t $C &&
 631                git -C sub1 cat-file -t $D &&
 632                git checkout --recurse-submodules FETCH_HEAD
 633        )
 634'
 635
 636test_expect_success 'fetch new submodule commit on-demand in FETCH_HEAD' '
 637        # depends on the previous test for setup
 638
 639        C=$(git -C submodule commit-tree -m "another change outside refs/heads" HEAD^{tree}) &&
 640        git -C submodule update-ref refs/changes/4 $C &&
 641        git update-index --cacheinfo 160000 $C submodule &&
 642        test_tick &&
 643
 644        D=$(git -C sub1 commit-tree -m "another change outside refs/heads" HEAD^{tree}) &&
 645        git -C sub1 update-ref refs/changes/5 $D &&
 646        git update-index --cacheinfo 160000 $D sub1 &&
 647
 648        git commit -m "updated submodules outside of refs/heads" &&
 649        E=$(git rev-parse HEAD) &&
 650        git update-ref refs/changes/6 $E &&
 651        (
 652                cd downstream &&
 653                git fetch --recurse-submodules origin refs/changes/6 &&
 654                git -C submodule cat-file -t $C &&
 655                git -C sub1 cat-file -t $D &&
 656                git checkout --recurse-submodules FETCH_HEAD
 657        )
 658'
 659
 660test_expect_success 'fetch new submodule commits on-demand without .gitmodules entry' '
 661        # depends on the previous test for setup
 662
 663        git config -f .gitmodules --remove-section submodule.sub1 &&
 664        git add .gitmodules &&
 665        git commit -m "delete gitmodules file" &&
 666        git checkout -B master &&
 667        git -C downstream fetch &&
 668        git -C downstream checkout origin/master &&
 669
 670        C=$(git -C submodule commit-tree -m "yet another change outside refs/heads" HEAD^{tree}) &&
 671        git -C submodule update-ref refs/changes/7 $C &&
 672        git update-index --cacheinfo 160000 $C submodule &&
 673        test_tick &&
 674
 675        D=$(git -C sub1 commit-tree -m "yet another change outside refs/heads" HEAD^{tree}) &&
 676        git -C sub1 update-ref refs/changes/8 $D &&
 677        git update-index --cacheinfo 160000 $D sub1 &&
 678
 679        git commit -m "updated submodules outside of refs/heads" &&
 680        E=$(git rev-parse HEAD) &&
 681        git update-ref refs/changes/9 $E &&
 682        (
 683                cd downstream &&
 684                git fetch --recurse-submodules origin refs/changes/9 &&
 685                git -C submodule cat-file -t $C &&
 686                git -C sub1 cat-file -t $D &&
 687                git checkout --recurse-submodules FETCH_HEAD
 688        )
 689'
 690
 691test_expect_success 'fetch new submodule commit intermittently referenced by superproject' '
 692        # depends on the previous test for setup
 693
 694        D=$(git -C sub1 commit-tree -m "change 10 outside refs/heads" HEAD^{tree}) &&
 695        E=$(git -C sub1 commit-tree -m "change 11 outside refs/heads" HEAD^{tree}) &&
 696        F=$(git -C sub1 commit-tree -m "change 12 outside refs/heads" HEAD^{tree}) &&
 697
 698        git -C sub1 update-ref refs/changes/10 $D &&
 699        git update-index --cacheinfo 160000 $D sub1 &&
 700        git commit -m "updated submodules outside of refs/heads" &&
 701
 702        git -C sub1 update-ref refs/changes/11 $E &&
 703        git update-index --cacheinfo 160000 $E sub1 &&
 704        git commit -m "updated submodules outside of refs/heads" &&
 705
 706        git -C sub1 update-ref refs/changes/12 $F &&
 707        git update-index --cacheinfo 160000 $F sub1 &&
 708        git commit -m "updated submodules outside of refs/heads" &&
 709
 710        G=$(git rev-parse HEAD) &&
 711        git update-ref refs/changes/13 $G &&
 712        (
 713                cd downstream &&
 714                git fetch --recurse-submodules origin refs/changes/13 &&
 715
 716                git -C sub1 cat-file -t $D &&
 717                git -C sub1 cat-file -t $E &&
 718                git -C sub1 cat-file -t $F
 719        )
 720'
 721
 722test_done