tests/diff3

   1 #!/bin/sh
   2 # This would malfunction in diff-3.4
   3
   4 . "${srcdir=.}/init.sh"; path_prepend_ ../src
   5
   6 # Some systems lack seq.
   7 # A limited replacement for seq: handle 1 or 2 args; increment must be 1
   8 seq()
   9 {
  10   case $# in
  11     1) start=1  final=$1;;
  12     2) start=$1 final=$2;;
  13     *) echo you lose 1>&2; exit 1;;
  14   esac
  15   awk 'BEGIN{for(i='$start';i<='$final';i++) print i}' < /dev/null
  16 }
  17
  18 echo a > a || framework_failure_
  19 echo b > b || framework_failure_
  20 echo c > c || framework_failure_
  21 cat <<'EOF' > exp || framework_failure_
  22 ====
  23 1:1c
  24   a
  25 2:1c
  26   b
  27 3:1c
  28   c
  29 EOF
  30
  31 fail=0
  32
  33 # Use --diff-program=diff since --program-transform-name and similar are
  34 # applied after 'make install'.
  35 diff3 --diff-program=diff a b c > out 2> err || fail=1
  36 compare exp out || fail=1
  37 compare /dev/null err || fail=1
  38
  39 # Repeat, but with all three files the same:
  40 diff3 --diff-program=diff a a a > out 2> err || fail=1
  41 compare /dev/null out || fail=1
  42 compare /dev/null err || fail=1
  43
  44 # This would have provoked a nontrivial leak prior to diffutils-3.5,
  45 # due to the nontrivial list of diff_block structs.
  46 seq 10 40|sed 's/1$/x/' > d || framework_failure_
  47 seq 10 40|sed 's/5$/y/' > e || framework_failure_
  48 seq 10 40|sed 's/8$/z/' > f || framework_failure_
  49 cat <<'EOF' > exp40 || framework_failure_
  50 ====1
  51 1:2c
  52   1x
  53 2:2c
  54 3:2c
  55   11
  56 ====2
  57 1:6c
  58 3:6c
  59   15
  60 2:6c
  61   1y
  62 ====3
  63 1:9c
  64 2:9c
  65   18
  66 3:9c
  67   1z
  68 ====1
  69 1:12c
  70   2x
  71 2:12c
  72 3:12c
  73   21
  74 ====2
  75 1:16c
  76 3:16c
  77   25
  78 2:16c
  79   2y
  80 ====3
  81 1:19c
  82 2:19c
  83   28
  84 3:19c
  85   2z
  86 ====1
  87 1:22c
  88   3x
  89 2:22c
  90 3:22c
  91   31
  92 ====2
  93 1:26c
  94 3:26c
  95   35
  96 2:26c
  97   3y
  98 ====3
  99 1:29c
 100 2:29c
 101   38
 102 3:29c
 103   3z
 104 EOF
 105
 106 diff3 --diff-program=diff d e f > out 2> err
 107 compare exp40 out || fail=1
 108 compare /dev/null err || fail=1
 109
 110 Exit $fail