t/t5613-info-alternate.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (C) 2006 Martin Waitz <tali@admingilde.org>
   4 #
   5
   6 test_description='test transitive info/alternate entries'
   7
   8 TEST_PASSES_SANITIZE_LEAK=true
   9 . ./test-lib.sh
  10
  11 test_expect_success 'preparing first repository' '
  12         test_create_repo A && (
  13                 cd A &&
  14                 echo "Hello World" > file1 &&
  15                 git add file1 &&
  16                 git commit -m "Initial commit" file1 &&
  17                 git repack -a -d &&
  18                 git prune
  19         )
  20 '
  21
  22 test_expect_success 'preparing second repository' '
  23         git clone -l -s A B && (
  24                 cd B &&
  25                 echo "foo bar" > file2 &&
  26                 git add file2 &&
  27                 git commit -m "next commit" file2 &&
  28                 git repack -a -d -l &&
  29                 git prune
  30         )
  31 '
  32
  33 test_expect_success 'preparing third repository' '
  34         git clone -l -s B C && (
  35                 cd C &&
  36                 echo "Goodbye, cruel world" > file3 &&
  37                 git add file3 &&
  38                 git commit -m "one more" file3 &&
  39                 git repack -a -d -l &&
  40                 git prune
  41         )
  42 '
  43
  44 test_expect_success 'count-objects shows the alternates' '
  45         cat >expect <<-EOF &&
  46         alternate: $(pwd)/B/.git/objects
  47         alternate: $(pwd)/A/.git/objects
  48         EOF
  49         git -C C count-objects -v >actual &&
  50         grep ^alternate: actual >actual.alternates &&
  51         test_cmp expect actual.alternates
  52 '
  53
  54 # Note: These tests depend on the hard-coded value of 5 as the maximum depth
  55 # we will follow recursion. We start the depth at 0 and count links, not
  56 # repositories. This means that in a chain like:
  57 #
  58 #   A --> B --> C --> D --> E --> F --> G --> H
  59 #      0     1     2     3     4     5     6
  60 #
  61 # we are OK at "G", but break at "H", even though "H" is actually the 8th
  62 # repository, not the 6th, which you might expect. Counting the links allows
  63 # N+1 repositories, and counting from 0 to 5 inclusive allows 6 links.
  64 #
  65 # Note also that we must use "--bare -l" to make the link to H. The "-l"
  66 # ensures we do not do a connectivity check, and the "--bare" makes sure
  67 # we do not try to checkout the result (which needs objects), either of
  68 # which would cause the clone to fail.
  69 test_expect_success 'creating too deep nesting' '
  70         git clone -l -s C D &&
  71         git clone -l -s D E &&
  72         git clone -l -s E F &&
  73         git clone -l -s F G &&
  74         git clone --bare -l -s G H
  75 '
  76
  77 test_expect_success 'validity of seventh repository' '
  78         git -C G fsck
  79 '
  80
  81 test_expect_success 'invalidity of eighth repository' '
  82         test_must_fail git -C H fsck
  83 '
  84
  85 test_expect_success 'breaking of loops' '
  86         echo "$(pwd)"/B/.git/objects >>A/.git/objects/info/alternates &&
  87         git -C C fsck
  88 '
  89
  90 test_expect_success 'that info/alternates is necessary' '
  91         rm -f C/.git/objects/info/alternates &&
  92         test_must_fail git -C C fsck
  93 '
  94
  95 test_expect_success 'that relative alternate is possible for current dir' '
  96         echo "../../../B/.git/objects" >C/.git/objects/info/alternates &&
  97         git fsck
  98 '
  99
 100 test_expect_success 'that relative alternate is recursive' '
 101         git -C D fsck
 102 '
 103
 104 # we can reach "A" from our new repo both directly, and via "C".
 105 # The deep/subdir is there to make sure we are not doing a stupid
 106 # pure-text comparison of the alternate names.
 107 test_expect_success 'relative duplicates are eliminated' '
 108         mkdir -p deep/subdir &&
 109         git init --bare deep/subdir/duplicate.git &&
 110         cat >deep/subdir/duplicate.git/objects/info/alternates <<-\EOF &&
 111         ../../../../C/.git/objects
 112         ../../../../A/.git/objects
 113         EOF
 114         cat >expect <<-EOF &&
 115         alternate: $(pwd)/C/.git/objects
 116         alternate: $(pwd)/B/.git/objects
 117         alternate: $(pwd)/A/.git/objects
 118         EOF
 119         git -C deep/subdir/duplicate.git count-objects -v >actual &&
 120         grep ^alternate: actual >actual.alternates &&
 121         test_cmp expect actual.alternates
 122 '
 123
 124 test_expect_success CASE_INSENSITIVE_FS 'dup finding can be case-insensitive' '
 125         git init --bare insensitive.git &&
 126         # the previous entry for "A" will have used uppercase
 127         cat >insensitive.git/objects/info/alternates <<-\EOF &&
 128         ../../C/.git/objects
 129         ../../a/.git/objects
 130         EOF
 131         cat >expect <<-EOF &&
 132         alternate: $(pwd)/C/.git/objects
 133         alternate: $(pwd)/B/.git/objects
 134         alternate: $(pwd)/A/.git/objects
 135         EOF
 136         git -C insensitive.git count-objects -v >actual &&
 137         grep ^alternate: actual >actual.alternates &&
 138         test_cmp expect actual.alternates
 139 '
 140
 141 test_done