t/helper: merge test-write-cache into test-tool
[git.git] / t / t4001-diff-rename.sh
bloba07816d5605f30ccb7f7ce6fe83288fff535538c
1 #!/bin/sh
3 # Copyright (c) 2005 Junio C Hamano
6 test_description='Test rename detection in diff engine.
9 . ./test-lib.sh
10 . "$TEST_DIRECTORY"/diff-lib.sh
12 test_expect_success 'setup' '
13 cat >path0 <<-\EOF &&
14 Line 1
15 Line 2
16 Line 3
17 Line 4
18 Line 5
19 Line 6
20 Line 7
21 Line 8
22 Line 9
23 Line 10
24 line 11
25 Line 12
26 Line 13
27 Line 14
28 Line 15
29 EOF
30 cat >expected <<-\EOF &&
31 diff --git a/path0 b/path1
32 rename from path0
33 rename to path1
34 --- a/path0
35 +++ b/path1
36 @@ -8,7 +8,7 @@ Line 7
37 Line 8
38 Line 9
39 Line 10
40 -line 11
41 +Line 11
42 Line 12
43 Line 13
44 Line 14
45 EOF
46 cat >no-rename <<-\EOF
47 diff --git a/path0 b/path0
48 deleted file mode 100644
49 index fdbec44..0000000
50 --- a/path0
51 +++ /dev/null
52 @@ -1,15 +0,0 @@
53 -Line 1
54 -Line 2
55 -Line 3
56 -Line 4
57 -Line 5
58 -Line 6
59 -Line 7
60 -Line 8
61 -Line 9
62 -Line 10
63 -line 11
64 -Line 12
65 -Line 13
66 -Line 14
67 -Line 15
68 diff --git a/path1 b/path1
69 new file mode 100644
70 index 0000000..752c50e
71 --- /dev/null
72 +++ b/path1
73 @@ -0,0 +1,15 @@
74 +Line 1
75 +Line 2
76 +Line 3
77 +Line 4
78 +Line 5
79 +Line 6
80 +Line 7
81 +Line 8
82 +Line 9
83 +Line 10
84 +Line 11
85 +Line 12
86 +Line 13
87 +Line 14
88 +Line 15
89 EOF
92 test_expect_success \
93 'update-index --add a file.' \
94 'git update-index --add path0'
96 test_expect_success \
97 'write that tree.' \
98 'tree=$(git write-tree) && echo $tree'
100 sed -e 's/line/Line/' <path0 >path1
101 rm -f path0
102 test_expect_success \
103 'renamed and edited the file.' \
104 'git update-index --add --remove path0 path1'
106 test_expect_success \
107 'git diff-index -p -M after rename and editing.' \
108 'git diff-index -p -M $tree >current'
111 test_expect_success \
112 'validate the output.' \
113 'compare_diff_patch current expected'
115 test_expect_success 'test diff.renames=true' '
116 git -c diff.renames=true diff --cached $tree >current &&
117 compare_diff_patch current expected
120 test_expect_success 'test diff.renames=false' '
121 git -c diff.renames=false diff --cached $tree >current &&
122 compare_diff_patch current no-rename
125 test_expect_success 'test diff.renames unset' '
126 git diff --cached $tree >current &&
127 compare_diff_patch current expected
130 test_expect_success 'favour same basenames over different ones' '
131 cp path1 another-path &&
132 git add another-path &&
133 git commit -m 1 &&
134 git rm path1 &&
135 mkdir subdir &&
136 git mv another-path subdir/path1 &&
137 git status >out &&
138 test_i18ngrep "renamed: .*path1 -> subdir/path1" out
141 test_expect_success 'favour same basenames even with minor differences' '
142 git show HEAD:path1 | sed "s/15/16/" > subdir/path1 &&
143 git status >out &&
144 test_i18ngrep "renamed: .*path1 -> subdir/path1" out
147 test_expect_success 'two files with same basename and same content' '
148 git reset --hard &&
149 mkdir -p dir/A dir/B &&
150 cp path1 dir/A/file &&
151 cp path1 dir/B/file &&
152 git add dir &&
153 git commit -m 2 &&
154 git mv dir other-dir &&
155 git status >out &&
156 test_i18ngrep "renamed: .*dir/A/file -> other-dir/A/file" out
159 test_expect_success 'setup for many rename source candidates' '
160 git reset --hard &&
161 for i in 0 1 2 3 4 5 6 7 8 9;
163 for j in 0 1 2 3 4 5 6 7 8 9;
165 echo "$i$j" >"path$i$j"
166 done
167 done &&
168 git add "path??" &&
169 test_tick &&
170 git commit -m "hundred" &&
171 (cat path1; echo new) >new-path &&
172 echo old >>path1 &&
173 git add new-path path1 &&
174 git diff -l 4 -C -C --cached --name-status >actual 2>actual.err &&
175 sed -e "s/^\([CM]\)[0-9]* /\1 /" actual >actual.munged &&
176 cat >expect <<-EOF &&
177 C path1 new-path
178 M path1
180 test_cmp expect actual.munged &&
181 grep warning actual.err
184 test_expect_success 'rename pretty print with nothing in common' '
185 mkdir -p a/b/ &&
186 : >a/b/c &&
187 git add a/b/c &&
188 git commit -m "create a/b/c" &&
189 mkdir -p c/b/ &&
190 git mv a/b/c c/b/a &&
191 git commit -m "a/b/c -> c/b/a" &&
192 git diff -M --summary HEAD^ HEAD >output &&
193 test_i18ngrep " a/b/c => c/b/a " output &&
194 git diff -M --stat HEAD^ HEAD >output &&
195 test_i18ngrep " a/b/c => c/b/a " output
198 test_expect_success 'rename pretty print with common prefix' '
199 mkdir -p c/d &&
200 git mv c/b/a c/d/e &&
201 git commit -m "c/b/a -> c/d/e" &&
202 git diff -M --summary HEAD^ HEAD >output &&
203 test_i18ngrep " c/{b/a => d/e} " output &&
204 git diff -M --stat HEAD^ HEAD >output &&
205 test_i18ngrep " c/{b/a => d/e} " output
208 test_expect_success 'rename pretty print with common suffix' '
209 mkdir d &&
210 git mv c/d/e d/e &&
211 git commit -m "c/d/e -> d/e" &&
212 git diff -M --summary HEAD^ HEAD >output &&
213 test_i18ngrep " {c/d => d}/e " output &&
214 git diff -M --stat HEAD^ HEAD >output &&
215 test_i18ngrep " {c/d => d}/e " output
218 test_expect_success 'rename pretty print with common prefix and suffix' '
219 mkdir d/f &&
220 git mv d/e d/f/e &&
221 git commit -m "d/e -> d/f/e" &&
222 git diff -M --summary HEAD^ HEAD >output &&
223 test_i18ngrep " d/{ => f}/e " output &&
224 git diff -M --stat HEAD^ HEAD >output &&
225 test_i18ngrep " d/{ => f}/e " output
228 test_expect_success 'rename pretty print common prefix and suffix overlap' '
229 mkdir d/f/f &&
230 git mv d/f/e d/f/f/e &&
231 git commit -m "d/f/e d/f/f/e" &&
232 git diff -M --summary HEAD^ HEAD >output &&
233 test_i18ngrep " d/f/{ => f}/e " output &&
234 git diff -M --stat HEAD^ HEAD >output &&
235 test_i18ngrep " d/f/{ => f}/e " output
238 test_expect_success 'diff-tree -l0 defaults to a big rename limit, not zero' '
239 test_write_lines line1 line2 line3 >myfile &&
240 git add myfile &&
241 git commit -m x &&
243 test_write_lines line1 line2 line4 >myotherfile &&
244 git rm myfile &&
245 git add myotherfile &&
246 git commit -m x &&
248 git diff-tree -M -l0 HEAD HEAD^ >actual &&
249 # Verify that a rename from myotherfile to myfile was detected
250 grep "myotherfile.*myfile" actual
253 test_done