27a4b33a774bbc194461d8caf1af3caf018f3358
[external/busybox.git] / util-linux / testsuite / diff.tests
1 #!/bin/sh
2 # Copyright 2008 by Denys Vlasenko
3 # Licensed under GPL v2, see file LICENSE for details.
4
5 . ./testing.sh
6
7 # testing "test name" "commands" "expected result" "file input" "stdin"
8
9 # diff outputs date/time in the header, which should not be analysed
10 # NB: sed has tab character in s command!
11 TRIM_TAB="sed 's/       .*//'"
12
13 testing "diff of stdin" \
14         "diff -u - input | $TRIM_TAB" \
15 "\
16 --- -
17 +++ input
18 @@ -1 +1,3 @@
19 +qwe
20  asd
21 +zxc
22 " \
23         "qwe\nasd\nzxc\n" \
24         "asd\n"
25
26 testing "diff of stdin, no newline in the file" \
27         "diff -u - input | $TRIM_TAB" \
28 "\
29 --- -
30 +++ input
31 @@ -1 +1,3 @@
32 +qwe
33  asd
34 +zxc
35 \\ No newline at end of file
36 " \
37         "qwe\nasd\nzxc" \
38         "asd\n"
39
40 # we also test that stdin is in fact NOT read
41 testing "diff of stdin, twice" \
42         'diff - -; echo $?; wc -c' \
43         "0\n5\n" \
44         "" \
45         "stdin"
46
47 testing "diff of empty file against nonempty one" \
48         "diff -u - input | $TRIM_TAB" \
49 "\
50 --- -
51 +++ input
52 @@ -0,0 +1 @@
53 +a
54 " \
55         "a\n" \
56         ""
57
58 testing "diff -b treats EOF as whitespace" \
59         'diff -ub - input; echo $?' \
60         "0\n" \
61         "abc" \
62         "abc "
63
64 testing "diff -b treats all spaces as equal" \
65         'diff -ub - input; echo $?' \
66         "0\n" \
67         "a \t c\n" \
68         "a\t \tc\n"
69
70 testing "diff -B ignores changes whose lines are all blank" \
71         'diff -uB - input; echo $?' \
72         "0\n" \
73         "a\n" \
74         "\na\n\n"
75
76 testing "diff -B does not ignore changes whose lines are not all blank" \
77         "diff -uB - input | $TRIM_TAB" \
78 "\
79 --- -
80 +++ input
81 @@ -1,3 +1 @@
82 -
83 -b
84 -
85 +a
86 " \
87         "a\n" \
88         "\nb\n\n"
89
90 testing "diff always takes context from old file" \
91         "diff -ub - input | $TRIM_TAB" \
92 "\
93 --- -
94 +++ input
95 @@ -1 +1,3 @@
96 +abc
97  a c
98 +def
99 " \
100         "abc\na  c\ndef\n" \
101         "a c\n"
102
103 # testing "test name" "commands" "expected result" "file input" "stdin"
104
105 # clean up
106 rm -rf diff1 diff2
107
108 mkdir diff1 diff2 diff2/subdir
109 echo qwe >diff1/-
110 echo asd >diff2/subdir/-
111 optional FEATURE_DIFF_DIR
112 testing "diff diff1 diff2/subdir" \
113         "diff -ur diff1 diff2/subdir | $TRIM_TAB" \
114 "\
115 --- diff1/-
116 +++ diff2/subdir/-
117 @@ -1 +1 @@
118 -qwe
119 +asd
120 " \
121         "" ""
122 SKIP=
123
124 # using directory structure from prev test...
125 optional FEATURE_DIFF_DIR
126 testing "diff dir dir2/file/-" \
127         "diff -ur diff1 diff2/subdir/- | $TRIM_TAB" \
128 "\
129 --- diff1/-
130 +++ diff2/subdir/-
131 @@ -1 +1 @@
132 -qwe
133 +asd
134 " \
135         "" ""
136 SKIP=
137
138 # using directory structure from prev test...
139 mkdir diff1/test
140 mkfifo diff2/subdir/test
141 optional FEATURE_DIFF_DIR
142 testing "diff of dir and fifo" \
143         "diff -ur diff1 diff2/subdir | $TRIM_TAB" \
144 "\
145 --- diff1/-
146 +++ diff2/subdir/-
147 @@ -1 +1 @@
148 -qwe
149 +asd
150 Only in diff2/subdir: test
151 " \
152         "" ""
153 SKIP=
154
155 # using directory structure from prev test...
156 rmdir diff1/test
157 echo >diff1/test
158 optional FEATURE_DIFF_DIR
159 testing "diff of file and fifo" \
160         "diff -ur diff1 diff2/subdir | $TRIM_TAB" \
161 "\
162 --- diff1/-
163 +++ diff2/subdir/-
164 @@ -1 +1 @@
165 -qwe
166 +asd
167 File diff2/subdir/test is not a regular file or directory and was skipped
168 " \
169         "" ""
170 SKIP=
171
172 # using directory structure from prev test...
173 mkfifo diff1/test2
174 optional FEATURE_DIFF_DIR
175 testing "diff -rN does not read non-regular files" \
176         "diff -urN diff1 diff2/subdir | $TRIM_TAB" \
177 "\
178 --- diff1/-
179 +++ diff2/subdir/-
180 @@ -1 +1 @@
181 -qwe
182 +asd
183 File diff2/subdir/test is not a regular file or directory and was skipped
184 File diff1/test2 is not a regular file or directory and was skipped
185 " \
186         "" ""
187 SKIP=
188
189 # clean up
190 rm -rf diff1 diff2
191
192 # NOT using directory structure from prev test...
193 mkdir diff1 diff2
194 echo qwe >diff1/-
195 echo rty >diff2/-
196 optional FEATURE_DIFF_DIR
197 testing "diff diff1 diff2/" \
198         "diff -ur diff1 diff2/ | $TRIM_TAB; diff -ur .///diff1 diff2//// | $TRIM_TAB" \
199 "\
200 --- diff1/-
201 +++ diff2/-
202 @@ -1 +1 @@
203 -qwe
204 +rty
205 --- .///diff1/-
206 +++ diff2////-
207 @@ -1 +1 @@
208 -qwe
209 +rty
210 " \
211         "" ""
212 SKIP=
213
214 # clean up
215 rm -rf diff1 diff2
216
217 exit $FAILCOUNT