t/t5522-pull-symlink.sh

   1 #!/bin/sh
   2
   3 test_description='pulling from symlinked subdir'
   4
   5 . ./test-lib.sh
   6
   7 # The scenario we are building:
   8 #
   9 #   trash\ directory/
  10 #     clone-repo/
  11 #       subdir/
  12 #         bar
  13 #     subdir-link -> clone-repo/subdir/
  14 #
  15 # The working directory is subdir-link.
  16
  17 mkdir subdir
  18 echo file >subdir/file
  19 git add subdir/file
  20 git commit -q -m file
  21 git clone -q . clone-repo
  22 ln -s clone-repo/subdir/ subdir-link
  23
  24
  25 # Demonstrate that things work if we just avoid the symlink
  26 #
  27 test_expect_success 'pulling from real subdir' '
  28         (
  29                 echo real >subdir/file &&
  30                 git commit -m real subdir/file &&
  31                 cd clone-repo/subdir/ &&
  32                 git pull &&
  33                 test real = $(cat file)
  34         )
  35 '
  36
  37 # From subdir-link, pulling should work as it does from
  38 # clone-repo/subdir/.
  39 #
  40 # Instead, the error pull gave was:
  41 #
  42 #   fatal: 'origin': unable to chdir or not a git archive
  43 #   fatal: The remote end hung up unexpectedly
  44 #
  45 # because git would find the .git/config for the "trash directory"
  46 # repo, not for the clone-repo repo.  The "trash directory" repo
  47 # had no entry for origin.  Git found the wrong .git because
  48 # git rev-parse --show-cdup printed a path relative to
  49 # clone-repo/subdir/, not subdir-link/.  Git rev-parse --show-cdup
  50 # used the correct .git, but when the git pull shell script did
  51 # "cd `git rev-parse --show-cdup`", it ended up in the wrong
  52 # directory.  A POSIX shell's "cd" works a little differently
  53 # than chdir() in C; "cd -P" is much closer to chdir().
  54 #
  55 test_expect_success 'pulling from symlinked subdir' '
  56         (
  57                 echo link >subdir/file &&
  58                 git commit -m link subdir/file &&
  59                 cd subdir-link/ &&
  60                 git pull &&
  61                 test link = $(cat file)
  62         )
  63 '
  64
  65 # Prove that the remote end really is a repo, and other commands
  66 # work fine in this context.  It's just that "git pull" breaks.
  67 #
  68 test_expect_success 'pushing from symlinked subdir' '
  69         (
  70                 cd subdir-link/ &&
  71                 echo push >file &&
  72                 git commit -m push ./file &&
  73                 git push
  74         ) &&
  75         test push = $(git show HEAD:subdir/file)
  76 '
  77
  78 test_done