t/t4204-patch-id.sh

   1 #!/bin/sh
   2
   3 test_description='git patch-id'
   4
   5 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   6 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   7
   8 . ./test-lib.sh
   9
  10 test_expect_success 'setup' '
  11         as="a a a a a a a a" && # eight a
  12         test_write_lines $as >foo &&
  13         test_write_lines $as >bar &&
  14         git add foo bar &&
  15         git commit -a -m initial &&
  16         test_write_lines $as b >foo &&
  17         test_write_lines $as b >bar &&
  18         git commit -a -m first &&
  19         git checkout -b same main &&
  20         git commit --amend -m same-msg &&
  21         git checkout -b notsame main &&
  22         echo c >foo &&
  23         echo c >bar &&
  24         git commit --amend -a -m notsame-msg &&
  25         test_write_lines bar foo >bar-then-foo &&
  26         test_write_lines foo bar >foo-then-bar
  27 '
  28
  29 test_expect_success 'patch-id output is well-formed' '
  30         git log -p -1 | git patch-id >output &&
  31         grep "^$OID_REGEX $(git rev-parse HEAD)$" output
  32 '
  33
  34 #calculate patch id. Make sure output is not empty.
  35 calc_patch_id () {
  36         patch_name="$1"
  37         shift
  38         git patch-id "$@" |
  39         sed "s/ .*//" >patch-id_"$patch_name" &&
  40         test_line_count -gt 0 patch-id_"$patch_name"
  41 }
  42
  43 get_top_diff () {
  44         git log -p -1 "$@" -O bar-then-foo --
  45 }
  46
  47 get_patch_id () {
  48         get_top_diff "$1" | calc_patch_id "$@"
  49 }
  50
  51 test_expect_success 'patch-id detects equality' '
  52         get_patch_id main &&
  53         get_patch_id same &&
  54         test_cmp patch-id_main patch-id_same
  55 '
  56
  57 test_expect_success 'patch-id detects inequality' '
  58         get_patch_id main &&
  59         get_patch_id notsame &&
  60         ! test_cmp patch-id_main patch-id_notsame
  61 '
  62
  63 test_expect_success 'patch-id supports git-format-patch output' '
  64         get_patch_id main &&
  65         git checkout same &&
  66         git format-patch -1 --stdout | calc_patch_id same &&
  67         test_cmp patch-id_main patch-id_same &&
  68         set $(git format-patch -1 --stdout | git patch-id) &&
  69         test "$2" = $(git rev-parse HEAD)
  70 '
  71
  72 test_expect_success 'whitespace is irrelevant in footer' '
  73         get_patch_id main &&
  74         git checkout same &&
  75         git format-patch -1 --stdout | sed "s/ \$//" | calc_patch_id same &&
  76         test_cmp patch-id_main patch-id_same
  77 '
  78
  79 cmp_patch_id () {
  80         if
  81                 test "$1" = "relevant"
  82         then
  83                 ! test_cmp patch-id_"$2" patch-id_"$3"
  84         else
  85                 test_cmp patch-id_"$2" patch-id_"$3"
  86         fi
  87 }
  88
  89 test_patch_id_file_order () {
  90         relevant="$1"
  91         shift
  92         name="order-${1}-$relevant"
  93         shift
  94         get_top_diff "main" | calc_patch_id "$name" "$@" &&
  95         git checkout same &&
  96         git format-patch -1 --stdout -O foo-then-bar |
  97                 calc_patch_id "ordered-$name" "$@" &&
  98         cmp_patch_id $relevant "$name" "ordered-$name"
  99
 100 }
 101
 102 # combined test for options: add more tests here to make them
 103 # run with all options
 104 test_patch_id () {
 105         test_patch_id_file_order "$@"
 106 }
 107
 108 # small tests with detailed diagnostic for basic options.
 109 test_expect_success 'file order is irrelevant with --stable' '
 110         test_patch_id_file_order irrelevant --stable --stable
 111 '
 112
 113 test_expect_success 'file order is relevant with --unstable' '
 114         test_patch_id_file_order relevant --unstable --unstable
 115 '
 116
 117 #Now test various option combinations.
 118 test_expect_success 'default is unstable' '
 119         test_patch_id relevant default
 120 '
 121
 122 test_expect_success 'patchid.stable = true is stable' '
 123         test_config patchid.stable true &&
 124         test_patch_id irrelevant patchid.stable=true
 125 '
 126
 127 test_expect_success 'patchid.stable = false is unstable' '
 128         test_config patchid.stable false &&
 129         test_patch_id relevant patchid.stable=false
 130 '
 131
 132 test_expect_success '--unstable overrides patchid.stable = true' '
 133         test_config patchid.stable true &&
 134         test_patch_id relevant patchid.stable=true--unstable --unstable
 135 '
 136
 137 test_expect_success '--stable overrides patchid.stable = false' '
 138         test_config patchid.stable false &&
 139         test_patch_id irrelevant patchid.stable=false--stable --stable
 140 '
 141
 142 test_expect_success 'patch-id supports git-format-patch MIME output' '
 143         get_patch_id main &&
 144         git checkout same &&
 145         git format-patch -1 --attach --stdout | calc_patch_id same &&
 146         test_cmp patch-id_main patch-id_same
 147 '
 148
 149 test_expect_success 'patch-id respects config from subdir' '
 150         test_config patchid.stable true &&
 151         mkdir subdir &&
 152
 153         # copy these because test_patch_id() looks for them in
 154         # the current directory
 155         cp bar-then-foo foo-then-bar subdir &&
 156
 157         (
 158                 cd subdir &&
 159                 test_patch_id irrelevant patchid.stable=true
 160         )
 161 '
 162
 163 cat >nonl <<\EOF
 164 diff --git i/a w/a
 165 index e69de29..2e65efe 100644
 166 --- i/a
 167 +++ w/a
 168 @@ -0,0 +1 @@
 169 +a
 170 \ No newline at end of file
 171 diff --git i/b w/b
 172 index e69de29..6178079 100644
 173 --- i/b
 174 +++ w/b
 175 @@ -0,0 +1 @@
 176 +b
 177 EOF
 178
 179 cat >withnl <<\EOF
 180 diff --git i/a w/a
 181 index e69de29..7898192 100644
 182 --- i/a
 183 +++ w/a
 184 @@ -0,0 +1 @@
 185 +a
 186 diff --git i/b w/b
 187 index e69de29..6178079 100644
 188 --- i/b
 189 +++ w/b
 190 @@ -0,0 +1 @@
 191 +b
 192 EOF
 193
 194 test_expect_success 'patch-id handles no-nl-at-eof markers' '
 195         cat nonl | calc_patch_id nonl &&
 196         cat withnl | calc_patch_id withnl &&
 197         test_cmp patch-id_nonl patch-id_withnl
 198 '
 199 test_done