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1#!/bin/sh
2
3test_description='check that diff --max-depth will limit recursion'
4. ./test-lib.sh
5
6make_dir() {
7 mkdir -p "$1" &&
8 echo "$2" >"$1/file"
9}
10
11make_files() {
12 echo "$1" >file &&
13 make_dir one "$1" &&
14 make_dir one/two "$1" &&
15 make_dir one/two/three "$1"
16}
17
18test_expect_success 'setup' '
19 git commit --allow-empty -m empty &&
20 git tag empty &&
21 make_files added &&
22 git add . &&
23 git commit -m added &&
24 make_files modified &&
25 git add . &&
26 git commit -m modified &&
27 make_files index &&
28 git add . &&
29 make_files worktree
30'
31
32test_expect_success '--max-depth is disallowed with wildcard pathspecs' '
33 test_must_fail git diff-tree --max-depth=0 HEAD^ HEAD -- "f*"
34'
35
36check_one() {
37 type=$1; shift
38 args=$1; shift
39 path=$1; shift
40 depth=$1; shift
41 test_expect_${expect:-success} "diff-$type $args, path=$path, depth=$depth" "
42 for i in $*; do echo \$i; done >expect &&
43 git diff-$type --max-depth=$depth --name-only $args -- $path >actual &&
44 test_cmp expect actual
45 "
46}
47
48# For tree comparisons, we expect to see subtrees at the boundary
49# get their own entry.
50check_trees() {
51 check_one tree "$*" '' 0 file one
52 check_one tree "$*" '' 1 file one/file one/two
53 check_one tree "$*" '' 2 file one/file one/two/file one/two/three
54 check_one tree "$*" '' 3 file one/file one/two/file one/two/three/file
55 check_one tree "$*" '' -1 file one/file one/two/file one/two/three/file
56 check_one tree "$*" one 0 one
57 check_one tree "$*" one 1 one/file one/two
58 check_one tree "$*" one 2 one/file one/two/file one/two/three
59 check_one tree "$*" one 3 one/file one/two/file one/two/three/file
60 check_one tree "$*" one/two 0 one/two
61 check_one tree "$*" one/two 1 one/two/file one/two/three
62 check_one tree "$*" one/two 2 one/two/file one/two/three/file
63 check_one tree "$*" one/two 2 one/two/file one/two/three/file
64 check_one tree "$*" one/two/three 0 one/two/three
65 check_one tree "$*" one/two/three 1 one/two/three/file
66}
67
68# But for index comparisons, we do not store subtrees at all, so we do not
69# expect them.
70check_index() {
71 check_one "$@" '' 0 file
72 check_one "$@" '' 1 file one/file
73 check_one "$@" '' 2 file one/file one/two/file
74 check_one "$@" '' 3 file one/file one/two/file one/two/three/file
75 check_one "$@" one 0
76 check_one "$@" one 1 one/file
77 check_one "$@" one 2 one/file one/two/file
78 check_one "$@" one 3 one/file one/two/file one/two/three/file
79 check_one "$@" one/two 0
80 check_one "$@" one/two 1 one/two/file
81 check_one "$@" one/two 2 one/two/file one/two/three/file
82 check_one "$@" one/two/three 0
83 check_one "$@" one/two/three 1 one/two/three/file
84
85 # Value '-1' for '--max-depth is the same as recursion without limit,
86 # and thus should always succeed.
87 local expect=
88 check_one "$@" '' -1 file one/file one/two/file one/two/three/file
89}
90
91# Check as a modification...
92check_trees HEAD^ HEAD
93# ...and as an addition...
94check_trees empty HEAD
95# ...and as a deletion.
96check_trees HEAD empty
97
98# We currently only implement max-depth for trees.
99expect=failure
100# Check index against a tree
101check_index index "--cached HEAD"
102# and index against the worktree
103check_index files ""
104expect=
105
106test_expect_success 'find shortest path within embedded pathspecs' '
107 cat >expect <<-\EOF &&
108 one/file
109 one/two/file
110 one/two/three/file
111 EOF
112 git diff-tree --max-depth=2 --name-only HEAD^ HEAD -- one one/two >actual &&
113 test_cmp expect actual
114'
115
116test_done