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