tests: use $TEST_DIRECTORY to refer to the t/ directory
[git/git.git] / t / t4008-diff-break-rewrite.sh
1 #!/bin/sh
2 #
3 # Copyright (c) 2005 Junio C Hamano
4 #
5
6 test_description='Break and then rename
7
8 We have two very different files, file0 and file1, registered in a tree.
9
10 We update file1 so drastically that it is more similar to file0, and
11 then remove file0. With -B, changes to file1 should be broken into
12 separate delete and create, resulting in removal of file0, removal of
13 original file1 and creation of completely rewritten file1.
14
15 Further, with -B and -M together, these three modifications should
16 turn into rename-edit of file0 into file1.
17
18 Starting from the same two files in the tree, we swap file0 and file1.
19 With -B, this should be detected as two complete rewrites, resulting in
20 four changes in total.
21
22 Further, with -B and -M together, these should turn into two renames.
23 '
24 . ./test-lib.sh
25 . "$TEST_DIRECTORY"/diff-lib.sh ;# test-lib chdir's into trash
26
27 test_expect_success \
28 setup \
29 'cat "$TEST_DIRECTORY"/../README >file0 &&
30 cat "$TEST_DIRECTORY"/../COPYING >file1 &&
31 git update-index --add file0 file1 &&
32 tree=$(git write-tree) &&
33 echo "$tree"'
34
35 test_expect_success \
36 'change file1 with copy-edit of file0 and remove file0' \
37 'sed -e "s/git/GIT/" file0 >file1 &&
38 rm -f file0 &&
39 git update-index --remove file0 file1'
40
41 test_expect_success \
42 'run diff with -B' \
43 'git diff-index -B --cached "$tree" >current'
44
45 cat >expected <<\EOF
46 :100644 000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 0000000000000000000000000000000000000000 D file0
47 :100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 11e331465a89c394dc25c780de230043750c1ec8 M100 file1
48 EOF
49
50 test_expect_success \
51 'validate result of -B (#1)' \
52 'compare_diff_raw expected current'
53
54 test_expect_success \
55 'run diff with -B and -M' \
56 'git diff-index -B -M "$tree" >current'
57
58 cat >expected <<\EOF
59 :100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 08bb2fb671deff4c03a4d4a0a1315dff98d5732c R100 file0 file1
60 EOF
61
62 test_expect_success \
63 'validate result of -B -M (#2)' \
64 'compare_diff_raw expected current'
65
66 test_expect_success \
67 'swap file0 and file1' \
68 'rm -f file0 file1 &&
69 git read-tree -m $tree &&
70 git checkout-index -f -u -a &&
71 mv file0 tmp &&
72 mv file1 file0 &&
73 mv tmp file1 &&
74 git update-index file0 file1'
75
76 test_expect_success \
77 'run diff with -B' \
78 'git diff-index -B "$tree" >current'
79
80 cat >expected <<\EOF
81 :100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 6ff87c4664981e4397625791c8ea3bbb5f2279a3 M100 file0
82 :100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M100 file1
83 EOF
84
85 test_expect_success \
86 'validate result of -B (#3)' \
87 'compare_diff_raw expected current'
88
89 test_expect_success \
90 'run diff with -B and -M' \
91 'git diff-index -B -M "$tree" >current'
92
93 cat >expected <<\EOF
94 :100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 6ff87c4664981e4397625791c8ea3bbb5f2279a3 R100 file1 file0
95 :100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 R100 file0 file1
96 EOF
97
98 test_expect_success \
99 'validate result of -B -M (#4)' \
100 'compare_diff_raw expected current'
101
102 test_expect_success \
103 'make file0 into something completely different' \
104 'rm -f file0 &&
105 ln -s frotz file0 &&
106 git update-index file0 file1'
107
108 test_expect_success \
109 'run diff with -B' \
110 'git diff-index -B "$tree" >current'
111
112 cat >expected <<\EOF
113 :100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T file0
114 :100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M100 file1
115 EOF
116
117 test_expect_success \
118 'validate result of -B (#5)' \
119 'compare_diff_raw expected current'
120
121 test_expect_success \
122 'run diff with -B -M' \
123 'git diff-index -B -M "$tree" >current'
124
125 # file0 changed from regular to symlink. file1 is very close to the preimage of file0.
126 # because we break file0, file1 can become a rename of it.
127 cat >expected <<\EOF
128 :100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T file0
129 :100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 R file0 file1
130 EOF
131
132 test_expect_success \
133 'validate result of -B -M (#6)' \
134 'compare_diff_raw expected current'
135
136 test_expect_success \
137 'run diff with -M' \
138 'git diff-index -M "$tree" >current'
139
140 # This should not mistake file0 as the copy source of new file1
141 # due to type differences.
142 cat >expected <<\EOF
143 :100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T file0
144 :100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M file1
145 EOF
146
147 test_expect_success \
148 'validate result of -M (#7)' \
149 'compare_diff_raw expected current'
150
151 test_expect_success \
152 'file1 edited to look like file0 and file0 rename-edited to file2' \
153 'rm -f file0 file1 &&
154 git read-tree -m $tree &&
155 git checkout-index -f -u -a &&
156 sed -e "s/git/GIT/" file0 >file1 &&
157 sed -e "s/git/GET/" file0 >file2 &&
158 rm -f file0
159 git update-index --add --remove file0 file1 file2'
160
161 test_expect_success \
162 'run diff with -B' \
163 'git diff-index -B "$tree" >current'
164
165 cat >expected <<\EOF
166 :100644 000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 0000000000000000000000000000000000000000 D file0
167 :100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 08bb2fb671deff4c03a4d4a0a1315dff98d5732c M100 file1
168 :000000 100644 0000000000000000000000000000000000000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 A file2
169 EOF
170
171 test_expect_success \
172 'validate result of -B (#8)' \
173 'compare_diff_raw expected current'
174
175 test_expect_success \
176 'run diff with -B -M' \
177 'git diff-index -B -M "$tree" >current'
178
179 cat >expected <<\EOF
180 :100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 08bb2fb671deff4c03a4d4a0a1315dff98d5732c C095 file0 file1
181 :100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 59f832e5c8b3f7e486be15ad0cd3e95ba9af8998 R095 file0 file2
182 EOF
183
184 test_expect_success \
185 'validate result of -B -M (#9)' \
186 'compare_diff_raw expected current'
187
188 test_done