contrib/diff-highlight/t/t9400-diff-highlight.sh

   1 #!/bin/sh
   2
   3 test_description='Test diff-highlight'
   4
   5 CURR_DIR=$(pwd)
   6 TEST_OUTPUT_DIRECTORY=$(pwd)
   7 TEST_DIRECTORY="$CURR_DIR"/../../../t
   8 DIFF_HIGHLIGHT="$CURR_DIR"/../diff-highlight
   9
  10 CW="$(printf "\033[7m")"        # white
  11 CR="$(printf "\033[27m")"       # reset
  12
  13 . "$TEST_DIRECTORY"/test-lib.sh
  14
  15 if ! test_have_prereq PERL
  16 then
  17         skip_all='skipping diff-highlight tests; perl not available'
  18         test_done
  19 fi
  20
  21 # dh_test is a test helper function which takes 3 file names as parameters. The
  22 # first 2 files are used to generate diff and commit output, which is then
  23 # piped through diff-highlight. The 3rd file should contain the expected output
  24 # of diff-highlight (minus the diff/commit header, ie. everything after and
  25 # including the first @@ line).
  26 dh_test () {
  27         a="$1" b="$2" &&
  28
  29         cat >patch.exp &&
  30
  31         {
  32                 cat "$a" >file &&
  33                 git add file &&
  34                 git commit -m "Add a file" &&
  35
  36                 cat "$b" >file &&
  37                 git diff file >diff.raw &&
  38                 git commit -a -m "Update a file" &&
  39                 git show >commit.raw
  40         } >/dev/null &&
  41
  42         "$DIFF_HIGHLIGHT" <diff.raw | test_strip_patch_header >diff.act &&
  43         "$DIFF_HIGHLIGHT" <commit.raw | test_strip_patch_header >commit.act &&
  44         test_cmp patch.exp diff.act &&
  45         test_cmp patch.exp commit.act
  46 }
  47
  48 test_strip_patch_header () {
  49         sed -n '/^@@/,$p' $*
  50 }
  51
  52 test_expect_success 'diff-highlight highlights the beginning of a line' '
  53         cat >a <<-\EOF &&
  54                 aaa
  55                 bbb
  56                 ccc
  57         EOF
  58
  59         cat >b <<-\EOF &&
  60                 aaa
  61                 0bb
  62                 ccc
  63         EOF
  64
  65         dh_test a b <<-EOF
  66                 @@ -1,3 +1,3 @@
  67                  aaa
  68                 -${CW}b${CR}bb
  69                 +${CW}0${CR}bb
  70                  ccc
  71         EOF
  72 '
  73
  74 test_expect_success 'diff-highlight highlights the end of a line' '
  75         cat >a <<-\EOF &&
  76                 aaa
  77                 bbb
  78                 ccc
  79         EOF
  80
  81         cat >b <<-\EOF &&
  82                 aaa
  83                 bb0
  84                 ccc
  85         EOF
  86
  87         dh_test a b <<-EOF
  88                 @@ -1,3 +1,3 @@
  89                  aaa
  90                 -bb${CW}b${CR}
  91                 +bb${CW}0${CR}
  92                  ccc
  93         EOF
  94 '
  95
  96 test_expect_success 'diff-highlight highlights the middle of a line' '
  97         cat >a <<-\EOF &&
  98                 aaa
  99                 bbb
 100                 ccc
 101         EOF
 102
 103         cat >b <<-\EOF &&
 104                 aaa
 105                 b0b
 106                 ccc
 107         EOF
 108
 109         dh_test a b <<-EOF
 110                 @@ -1,3 +1,3 @@
 111                  aaa
 112                 -b${CW}b${CR}b
 113                 +b${CW}0${CR}b
 114                  ccc
 115         EOF
 116 '
 117
 118 test_expect_success 'diff-highlight does not highlight whole line' '
 119         cat >a <<-\EOF &&
 120                 aaa
 121                 bbb
 122                 ccc
 123         EOF
 124
 125         cat >b <<-\EOF &&
 126                 aaa
 127                 000
 128                 ccc
 129         EOF
 130
 131         dh_test a b <<-EOF
 132                 @@ -1,3 +1,3 @@
 133                  aaa
 134                 -bbb
 135                 +000
 136                  ccc
 137         EOF
 138 '
 139
 140 test_expect_failure 'diff-highlight highlights mismatched hunk size' '
 141         cat >a <<-\EOF &&
 142                 aaa
 143                 bbb
 144         EOF
 145
 146         cat >b <<-\EOF &&
 147                 aaa
 148                 b0b
 149                 ccc
 150         EOF
 151
 152         dh_test a b <<-EOF
 153                 @@ -1,3 +1,3 @@
 154                  aaa
 155                 -b${CW}b${CR}b
 156                 +b${CW}0${CR}b
 157                 +ccc
 158         EOF
 159 '
 160
 161 # TODO add multi-byte test
 162
 163 test_done