release/src/router/busybox/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 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