testsuite/diff.tests

   1 #!/bin/sh
   2 # Copyright 2008 by Denys Vlasenko
   3 # Licensed under GPLv2, see file LICENSE in this source tree.
   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 stdin" \
  48         "diff -u - input | $TRIM_TAB" \
  49 "\
  50 --- -
  51 +++ input
  52 @@ -1 +0,0 @@
  53 -a
  54 " \
  55         "" \
  56         "a\n"
  57
  58 testing "diff of empty file against nonempty one" \
  59         "diff -u - input | $TRIM_TAB" \
  60 "\
  61 --- -
  62 +++ input
  63 @@ -0,0 +1 @@
  64 +a
  65 " \
  66         "a\n" \
  67         ""
  68
  69 testing "diff -b treats EOF as whitespace" \
  70         'diff -ub - input; echo $?' \
  71         "0\n" \
  72         "abc" \
  73         "abc "
  74
  75 testing "diff -b treats all spaces as equal" \
  76         'diff -ub - input; echo $?' \
  77         "0\n" \
  78         "a \t c\n" \
  79         "a\t \tc\n"
  80
  81 testing "diff -B ignores changes whose lines are all blank" \
  82         'diff -uB - input; echo $?' \
  83         "0\n" \
  84         "a\n" \
  85         "\na\n\n"
  86
  87 testing "diff -B does not ignore changes whose lines are not all blank" \
  88         "diff -uB - input | $TRIM_TAB" \
  89 "\
  90 --- -
  91 +++ input
  92 @@ -1,3 +1 @@
  93 -
  94 -b
  95 -
  96 +a
  97 " \
  98         "a\n" \
  99         "\nb\n\n"
 100
 101 testing "diff -B ignores blank single line change" \
 102         'diff -qB - input; echo $?' \
 103         "0\n" \
 104         "\n1\n" \
 105         "1\n"
 106
 107 testing "diff -B does not ignore non-blank single line change" \
 108         'diff -qB - input; echo $?' \
 109         "Files - and input differ\n1\n" \
 110         "0\n" \
 111         "1\n"
 112
 113 testing "diff always takes context from old file" \
 114         "diff -ub - input | $TRIM_TAB" \
 115 "\
 116 --- -
 117 +++ input
 118 @@ -1 +1,3 @@
 119 +abc
 120  a c
 121 +def
 122 " \
 123         "abc\na  c\ndef\n" \
 124         "a c\n"
 125
 126 # testing "test name" "commands" "expected result" "file input" "stdin"
 127
 128 # clean up
 129 rm -rf diff1 diff2
 130
 131 mkdir diff1 diff2 diff2/subdir
 132 echo qwe >diff1/-
 133 echo asd >diff2/subdir/-
 134 optional FEATURE_DIFF_DIR
 135 testing "diff diff1 diff2/subdir" \
 136         "diff -ur diff1 diff2/subdir | $TRIM_TAB" \
 137 "\
 138 --- diff1/-
 139 +++ diff2/subdir/-
 140 @@ -1 +1 @@
 141 -qwe
 142 +asd
 143 " \
 144         "" ""
 145 SKIP=
 146
 147 # using directory structure from prev test...
 148 optional FEATURE_DIFF_DIR
 149 testing "diff dir dir2/file/-" \
 150         "diff -ur diff1 diff2/subdir/- | $TRIM_TAB" \
 151 "\
 152 --- diff1/-
 153 +++ diff2/subdir/-
 154 @@ -1 +1 @@
 155 -qwe
 156 +asd
 157 " \
 158         "" ""
 159 SKIP=
 160
 161 # using directory structure from prev test...
 162 mkdir diff1/test
 163 mkfifo diff2/subdir/test
 164 optional FEATURE_DIFF_DIR
 165 testing "diff of dir and fifo" \
 166         "diff -ur diff1 diff2/subdir | $TRIM_TAB" \
 167 "\
 168 --- diff1/-
 169 +++ diff2/subdir/-
 170 @@ -1 +1 @@
 171 -qwe
 172 +asd
 173 Only in diff2/subdir: test
 174 " \
 175         "" ""
 176 SKIP=
 177
 178 # using directory structure from prev test...
 179 rmdir diff1/test
 180 echo >diff1/test
 181 optional FEATURE_DIFF_DIR
 182 testing "diff of file and fifo" \
 183         "diff -ur diff1 diff2/subdir | $TRIM_TAB" \
 184 "\
 185 --- diff1/-
 186 +++ diff2/subdir/-
 187 @@ -1 +1 @@
 188 -qwe
 189 +asd
 190 File diff2/subdir/test is not a regular file or directory and was skipped
 191 " \
 192         "" ""
 193 SKIP=
 194
 195 # using directory structure from prev test...
 196 mkfifo diff1/test2
 197 optional FEATURE_DIFF_DIR
 198 testing "diff -rN does not read non-regular files" \
 199         "diff -urN diff1 diff2/subdir | $TRIM_TAB" \
 200 "\
 201 --- diff1/-
 202 +++ diff2/subdir/-
 203 @@ -1 +1 @@
 204 -qwe
 205 +asd
 206 File diff2/subdir/test is not a regular file or directory and was skipped
 207 File diff1/test2 is not a regular file or directory and was skipped
 208 " \
 209         "" ""
 210 SKIP=
 211
 212 # clean up
 213 rm -rf diff1 diff2
 214
 215 # NOT using directory structure from prev test...
 216 mkdir diff1 diff2
 217 echo qwe >diff1/-
 218 echo rty >diff2/-
 219 optional FEATURE_DIFF_DIR
 220 testing "diff diff1 diff2/" \
 221         "diff -ur diff1 diff2/ | $TRIM_TAB; diff -ur .///diff1 diff2//// | $TRIM_TAB" \
 222 "\
 223 --- diff1/-
 224 +++ diff2/-
 225 @@ -1 +1 @@
 226 -qwe
 227 +rty
 228 --- .///diff1/-
 229 +++ diff2////-
 230 @@ -1 +1 @@
 231 -qwe
 232 +rty
 233 " \
 234         "" ""
 235 SKIP=
 236
 237 # clean up
 238 rm -rf diff1 diff2
 239
 240 exit $FAILCOUNT