t/t5521-pull-symlink.sh

   1 #!/bin/sh
   2
   3 test_description='pulling from symlinked subdir'
   4
   5 . ./test-lib.sh
   6
   7 if test "$no_symlinks"; then
   8         say "symbolic links not supported - skipping tests"
   9         test_done
  10 fi
  11
  12 # The scenario we are building:
  13 #
  14 #   trash\ directory/
  15 #     clone-repo/
  16 #       subdir/
  17 #         bar
  18 #     subdir-link -> clone-repo/subdir/
  19 #
  20 # The working directory is subdir-link.
  21
  22 mkdir subdir
  23 echo file >subdir/file
  24 git add subdir/file
  25 git commit -q -m file
  26 git clone -q . clone-repo
  27 ln -s clone-repo/subdir/ subdir-link
  28
  29
  30 # Demonstrate that things work if we just avoid the symlink
  31 #
  32 test_expect_success 'pulling from real subdir' '
  33         (
  34                 echo real >subdir/file &&
  35                 git commit -m real subdir/file &&
  36                 cd clone-repo/subdir/ &&
  37                 git pull &&
  38                 test real = $(cat file)
  39         )
  40 '
  41
  42 # From subdir-link, pulling should work as it does from
  43 # clone-repo/subdir/.
  44 #
  45 # Instead, the error pull gave was:
  46 #
  47 #   fatal: 'origin': unable to chdir or not a git archive
  48 #   fatal: The remote end hung up unexpectedly
  49 #
  50 # because git would find the .git/config for the "trash directory"
  51 # repo, not for the clone-repo repo.  The "trash directory" repo
  52 # had no entry for origin.  Git found the wrong .git because
  53 # git rev-parse --show-cdup printed a path relative to
  54 # clone-repo/subdir/, not subdir-link/.  Git rev-parse --show-cdup
  55 # used the correct .git, but when the git pull shell script did
  56 # "cd `git rev-parse --show-cdup`", it ended up in the wrong
  57 # directory.  A POSIX shell's "cd" works a little differently
  58 # than chdir() in C; "cd -P" is much closer to chdir().
  59 #
  60 test_expect_success 'pulling from symlinked subdir' '
  61         (
  62                 echo link >subdir/file &&
  63                 git commit -m link subdir/file &&
  64                 cd subdir-link/ &&
  65                 git pull &&
  66                 test link = $(cat file)
  67         )
  68 '
  69
  70 # Prove that the remote end really is a repo, and other commands
  71 # work fine in this context.  It's just that "git pull" breaks.
  72 #
  73 test_expect_success 'pushing from symlinked subdir' '
  74         (
  75                 cd subdir-link/ &&
  76                 echo push >file &&
  77                 git commit -m push ./file &&
  78                 git push
  79         ) &&
  80         test push = $(git show HEAD:subdir/file)
  81 '
  82
  83 test_done