t/t4204-patch-id.sh

   1 #!/bin/sh
   2
   3 test_description='git patch-id'
   4
   5 . ./test-lib.sh
   6
   7 test_expect_success 'setup' '
   8         as="a a a a a a a a" && # eight a
   9         test_write_lines $as >foo &&
  10         test_write_lines $as >bar &&
  11         git add foo bar &&
  12         git commit -a -m initial &&
  13         test_write_lines $as b >foo &&
  14         test_write_lines $as b >bar &&
  15         git commit -a -m first &&
  16         git checkout -b same master &&
  17         git commit --amend -m same-msg &&
  18         git checkout -b notsame master &&
  19         echo c >foo &&
  20         echo c >bar &&
  21         git commit --amend -a -m notsame-msg &&
  22         test_write_lines bar foo >bar-then-foo &&
  23         test_write_lines foo bar >foo-then-bar
  24 '
  25
  26 test_expect_success 'patch-id output is well-formed' '
  27         git log -p -1 | git patch-id >output &&
  28         grep "^[a-f0-9]\{40\} $(git rev-parse HEAD)$" output
  29 '
  30
  31 #calculate patch id. Make sure output is not empty.
  32 calc_patch_id () {
  33         patch_name="$1"
  34         shift
  35         git patch-id "$@" |
  36         sed "s/ .*//" >patch-id_"$patch_name" &&
  37         test_line_count -gt 0 patch-id_"$patch_name"
  38 }
  39
  40 get_top_diff () {
  41         git log -p -1 "$@" -O bar-then-foo --
  42 }
  43
  44 get_patch_id () {
  45         get_top_diff "$1" | calc_patch_id "$@"
  46 }
  47
  48 test_expect_success 'patch-id detects equality' '
  49         get_patch_id master &&
  50         get_patch_id same &&
  51         test_cmp patch-id_master patch-id_same
  52 '
  53
  54 test_expect_success 'patch-id detects inequality' '
  55         get_patch_id master &&
  56         get_patch_id notsame &&
  57         ! test_cmp patch-id_master patch-id_notsame
  58 '
  59
  60 test_expect_success 'patch-id supports git-format-patch output' '
  61         get_patch_id master &&
  62         git checkout same &&
  63         git format-patch -1 --stdout | calc_patch_id same &&
  64         test_cmp patch-id_master patch-id_same &&
  65         set $(git format-patch -1 --stdout | git patch-id) &&
  66         test "$2" = $(git rev-parse HEAD)
  67 '
  68
  69 test_expect_success 'whitespace is irrelevant in footer' '
  70         get_patch_id master &&
  71         git checkout same &&
  72         git format-patch -1 --stdout | sed "s/ \$//" | calc_patch_id same &&
  73         test_cmp patch-id_master patch-id_same
  74 '
  75
  76 cmp_patch_id () {
  77         if
  78                 test "$1" = "relevant"
  79         then
  80                 ! test_cmp patch-id_"$2" patch-id_"$3"
  81         else
  82                 test_cmp patch-id_"$2" patch-id_"$3"
  83         fi
  84 }
  85
  86 test_patch_id_file_order () {
  87         relevant="$1"
  88         shift
  89         name="order-${1}-$relevant"
  90         shift
  91         get_top_diff "master" | calc_patch_id "$name" "$@" &&
  92         git checkout same &&
  93         git format-patch -1 --stdout -O foo-then-bar |
  94                 calc_patch_id "ordered-$name" "$@" &&
  95         cmp_patch_id $relevant "$name" "ordered-$name"
  96
  97 }
  98
  99 # combined test for options: add more tests here to make them
 100 # run with all options
 101 test_patch_id () {
 102         test_patch_id_file_order "$@"
 103 }
 104
 105 # small tests with detailed diagnostic for basic options.
 106 test_expect_success 'file order is irrelevant with --stable' '
 107         test_patch_id_file_order irrelevant --stable --stable
 108 '
 109
 110 test_expect_success 'file order is relevant with --unstable' '
 111         test_patch_id_file_order relevant --unstable --unstable
 112 '
 113
 114 #Now test various option combinations.
 115 test_expect_success 'default is unstable' '
 116         test_patch_id relevant default
 117 '
 118
 119 test_expect_success 'patchid.stable = true is stable' '
 120         test_config patchid.stable true &&
 121         test_patch_id irrelevant patchid.stable=true
 122 '
 123
 124 test_expect_success 'patchid.stable = false is unstable' '
 125         test_config patchid.stable false &&
 126         test_patch_id relevant patchid.stable=false
 127 '
 128
 129 test_expect_success '--unstable overrides patchid.stable = true' '
 130         test_config patchid.stable true &&
 131         test_patch_id relevant patchid.stable=true--unstable --unstable
 132 '
 133
 134 test_expect_success '--stable overrides patchid.stable = false' '
 135         test_config patchid.stable false &&
 136         test_patch_id irrelevant patchid.stable=false--stable --stable
 137 '
 138
 139 test_expect_success 'patch-id supports git-format-patch MIME output' '
 140         get_patch_id master &&
 141         git checkout same &&
 142         git format-patch -1 --attach --stdout | calc_patch_id same &&
 143         test_cmp patch-id_master patch-id_same
 144 '
 145
 146 test_expect_success 'patch-id respects config from subdir' '
 147         test_config patchid.stable true &&
 148         mkdir subdir &&
 149
 150         # copy these because test_patch_id() looks for them in
 151         # the current directory
 152         cp bar-then-foo foo-then-bar subdir &&
 153
 154         (
 155                 cd subdir &&
 156                 test_patch_id irrelevant patchid.stable=true
 157         )
 158 '
 159
 160 cat >nonl <<\EOF
 161 diff --git i/a w/a
 162 index e69de29..2e65efe 100644
 163 --- i/a
 164 +++ w/a
 165 @@ -0,0 +1 @@
 166 +a
 167 \ No newline at end of file
 168 diff --git i/b w/b
 169 index e69de29..6178079 100644
 170 --- i/b
 171 +++ w/b
 172 @@ -0,0 +1 @@
 173 +b
 174 EOF
 175
 176 cat >withnl <<\EOF
 177 diff --git i/a w/a
 178 index e69de29..7898192 100644
 179 --- i/a
 180 +++ w/a
 181 @@ -0,0 +1 @@
 182 +a
 183 diff --git i/b w/b
 184 index e69de29..6178079 100644
 185 --- i/b
 186 +++ w/b
 187 @@ -0,0 +1 @@
 188 +b
 189 EOF
 190
 191 test_expect_success 'patch-id handles no-nl-at-eof markers' '
 192         cat nonl | calc_patch_id nonl &&
 193         cat withnl | calc_patch_id withnl &&
 194         test_cmp patch-id_nonl patch-id_withnl
 195 '
 196 test_done