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1#!/bin/sh
2
3test_description='Test that adding/removing many notes triggers automatic fanout restructuring'
4
5. ./test-lib.sh
6
7path_has_fanout() {
8 path=$1 &&
9 fanout=$2 &&
10 after_last_slash=$(($(test_oid hexsz) - $fanout * 2)) &&
11 echo $path | grep -q -E "^([0-9a-f]{2}/){$fanout}[0-9a-f]{$after_last_slash}$"
12}
13
14touched_one_note_with_fanout() {
15 notes_commit=$1 &&
16 modification=$2 && # 'A' for addition, 'D' for deletion
17 fanout=$3 &&
18 diff=$(git diff-tree --no-commit-id --name-status --root -r $notes_commit) &&
19 path=$(echo $diff | sed -e "s/^$modification[\t ]//") &&
20 path_has_fanout "$path" $fanout;
21}
22
23all_notes_have_fanout() {
24 notes_commit=$1 &&
25 fanout=$2 &&
26 git ls-tree -r --name-only $notes_commit |
27 while read path
28 do
29 path_has_fanout $path $fanout || return 1
30 done
31}
32
33test_expect_success 'tweak test environment' '
34 git checkout -b nondeterminism &&
35 test_commit A &&
36 git checkout --orphan with_notes;
37'
38
39test_expect_success 'creating many notes with git-notes' '
40 num_notes=300 &&
41 i=0 &&
42 while test $i -lt $num_notes
43 do
44 i=$(($i + 1)) &&
45 test_tick &&
46 echo "file for commit #$i" > file &&
47 git add file &&
48 git commit -q -m "commit #$i" &&
49 git notes add -m "note #$i" || return 1
50 done
51'
52
53test_expect_success 'many notes created correctly with git-notes' '
54 git log >output.raw &&
55 grep "^ " output.raw >output &&
56 i=$num_notes &&
57 while test $i -gt 0
58 do
59 echo " commit #$i" &&
60 echo " note #$i" &&
61 i=$(($i - 1)) || return 1
62 done > expect &&
63 test_cmp expect output
64'
65
66test_expect_success 'stable fanout 0 is followed by stable fanout 1' '
67 i=$num_notes &&
68 fanout=0 &&
69 while test $i -gt 0
70 do
71 i=$(($i - 1)) &&
72 if touched_one_note_with_fanout refs/notes/commits~$i A $fanout
73 then
74 continue
75 elif test $fanout -eq 0
76 then
77 fanout=1 &&
78 if all_notes_have_fanout refs/notes/commits~$i $fanout
79 then
80 echo "Fanout 0 -> 1 at refs/notes/commits~$i" &&
81 continue
82 fi
83 fi &&
84 echo "Failed fanout=$fanout check at refs/notes/commits~$i" &&
85 git ls-tree -r --name-only refs/notes/commits~$i &&
86 return 1
87 done &&
88 all_notes_have_fanout refs/notes/commits 1
89'
90
91test_expect_success 'deleting most notes with git-notes' '
92 remove_notes=285 &&
93 i=0 &&
94 git rev-list HEAD >revs &&
95 while test $i -lt $remove_notes && read sha1
96 do
97 i=$(($i + 1)) &&
98 test_tick &&
99 git notes remove "$sha1" || return 1
100 done <revs
101'
102
103test_expect_success 'most notes deleted correctly with git-notes' '
104 git log HEAD~$remove_notes | grep "^ " > output &&
105 i=$(($num_notes - $remove_notes)) &&
106 while test $i -gt 0
107 do
108 echo " commit #$i" &&
109 echo " note #$i" &&
110 i=$(($i - 1)) || return 1
111 done > expect &&
112 test_cmp expect output
113'
114
115test_expect_success 'stable fanout 1 is followed by stable fanout 0' '
116 i=$remove_notes &&
117 fanout=1 &&
118 while test $i -gt 0
119 do
120 i=$(($i - 1)) &&
121 if touched_one_note_with_fanout refs/notes/commits~$i D $fanout
122 then
123 continue
124 elif test $fanout -eq 1
125 then
126 fanout=0 &&
127 if all_notes_have_fanout refs/notes/commits~$i $fanout
128 then
129 echo "Fanout 1 -> 0 at refs/notes/commits~$i" &&
130 continue
131 fi
132 fi &&
133 echo "Failed fanout=$fanout check at refs/notes/commits~$i" &&
134 git ls-tree -r --name-only refs/notes/commits~$i &&
135 return 1
136 done &&
137 all_notes_have_fanout refs/notes/commits 0
138'
139
140test_done