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 $as b >bar &&
  18         git commit -a -m first &&
  19         git checkout -b same main &&
  20         git commit --amend -m same-msg &&
  21         git checkout -b notsame main &&
  22         echo c >foo &&
  23         echo c >bar &&
  24         git commit --amend -a -m notsame-msg &&
  25         test_write_lines bar foo >bar-then-foo &&
  26         test_write_lines foo bar >foo-then-bar
  27 '
  28
  29 test_expect_success 'patch-id output is well-formed' '
  30         git log -p -1 >log.output &&
  31         git patch-id <log.output >output &&
  32         grep "^$OID_REGEX $(git rev-parse HEAD)$" output
  33 '
  34
  35 #calculate patch id. Make sure output is not empty.
  36 calc_patch_id () {
  37         patch_name="$1"
  38         shift
  39         git patch-id "$@" >patch-id.output &&
  40         sed "s/ .*//" patch-id.output >patch-id_"$patch_name" &&
  41         test_line_count -eq 1 patch-id_"$patch_name"
  42 }
  43
  44 get_top_diff () {
  45         git log -p -1 "$@" -O bar-then-foo --
  46 }
  47
  48 get_patch_id () {
  49         get_top_diff "$1" >top-diff.output &&
  50         calc_patch_id <top-diff.output "$@"
  51 }
  52
  53 test_expect_success 'patch-id detects equality' '
  54         get_patch_id main &&
  55         get_patch_id same &&
  56         test_cmp patch-id_main patch-id_same
  57 '
  58
  59 test_expect_success 'patch-id detects inequality' '
  60         get_patch_id main &&
  61         get_patch_id notsame &&
  62         ! test_cmp patch-id_main patch-id_notsame
  63 '
  64
  65 test_expect_success 'patch-id supports git-format-patch output' '
  66         get_patch_id main &&
  67         git checkout same &&
  68         git format-patch -1 --stdout >format-patch.output &&
  69         calc_patch_id same <format-patch.output &&
  70         test_cmp patch-id_main patch-id_same &&
  71         set $(git patch-id <format-patch.output) &&
  72         test "$2" = $(git rev-parse HEAD)
  73 '
  74
  75 test_expect_success 'whitespace is irrelevant in footer' '
  76         get_patch_id main &&
  77         git checkout same &&
  78         git format-patch -1 --stdout >format-patch.output &&
  79         sed "s/ \$//" format-patch.output | calc_patch_id same &&
  80         test_cmp patch-id_main patch-id_same
  81 '
  82
  83 cmp_patch_id () {
  84         if
  85                 test "$1" = "relevant"
  86         then
  87                 ! test_cmp patch-id_"$2" patch-id_"$3"
  88         else
  89                 test_cmp patch-id_"$2" patch-id_"$3"
  90         fi
  91 }
  92
  93 test_patch_id_file_order () {
  94         relevant="$1"
  95         shift
  96         name="order-${1}-$relevant"
  97         shift
  98         get_top_diff "main" >top-diff.output &&
  99         calc_patch_id <top-diff.output "$name" "$@" &&
 100         git checkout same &&
 101         git format-patch -1 --stdout -O foo-then-bar >format-patch.output &&
 102         calc_patch_id <format-patch.output "ordered-$name" "$@" &&
 103         cmp_patch_id $relevant "$name" "ordered-$name"
 104
 105 }
 106
 107 # combined test for options: add more tests here to make them
 108 # run with all options
 109 test_patch_id () {
 110         test_patch_id_file_order "$@"
 111 }
 112
 113 # small tests with detailed diagnostic for basic options.
 114 test_expect_success 'file order is irrelevant with --stable' '
 115         test_patch_id_file_order irrelevant --stable --stable
 116 '
 117
 118 test_expect_success 'file order is relevant with --unstable' '
 119         test_patch_id_file_order relevant --unstable --unstable
 120 '
 121
 122 #Now test various option combinations.
 123 test_expect_success 'default is unstable' '
 124         test_patch_id relevant default
 125 '
 126
 127 test_expect_success 'patchid.stable = true is stable' '
 128         test_config patchid.stable true &&
 129         test_patch_id irrelevant patchid.stable=true
 130 '
 131
 132 test_expect_success 'patchid.stable = false is unstable' '
 133         test_config patchid.stable false &&
 134         test_patch_id relevant patchid.stable=false
 135 '
 136
 137 test_expect_success '--unstable overrides patchid.stable = true' '
 138         test_config patchid.stable true &&
 139         test_patch_id relevant patchid.stable=true--unstable --unstable
 140 '
 141
 142 test_expect_success '--stable overrides patchid.stable = false' '
 143         test_config patchid.stable false &&
 144         test_patch_id irrelevant patchid.stable=false--stable --stable
 145 '
 146
 147 test_expect_success 'patch-id supports git-format-patch MIME output' '
 148         get_patch_id main &&
 149         git checkout same &&
 150         git format-patch -1 --attach --stdout >format-patch.output &&
 151         calc_patch_id <format-patch.output same &&
 152         test_cmp patch-id_main patch-id_same
 153 '
 154
 155 test_expect_success 'patch-id respects config from subdir' '
 156         test_config patchid.stable true &&
 157         mkdir subdir &&
 158
 159         # copy these because test_patch_id() looks for them in
 160         # the current directory
 161         cp bar-then-foo foo-then-bar subdir &&
 162
 163         (
 164                 cd subdir &&
 165                 test_patch_id irrelevant patchid.stable=true
 166         )
 167 '
 168
 169 test_expect_success 'patch-id handles no-nl-at-eof markers' '
 170         cat >nonl <<-\EOF &&
 171         diff --git i/a w/a
 172         index e69de29..2e65efe 100644
 173         --- i/a
 174         +++ w/a
 175         @@ -0,0 +1 @@
 176         +a
 177         \ No newline at end of file
 178         diff --git i/b w/b
 179         index e69de29..6178079 100644
 180         --- i/b
 181         +++ w/b
 182         @@ -0,0 +1 @@
 183         +b
 184         EOF
 185         cat >withnl <<-\EOF &&
 186         diff --git i/a w/a
 187         index e69de29..7898192 100644
 188         --- i/a
 189         +++ w/a
 190         @@ -0,0 +1 @@
 191         +a
 192         diff --git i/b w/b
 193         index e69de29..6178079 100644
 194         --- i/b
 195         +++ w/b
 196         @@ -0,0 +1 @@
 197         +b
 198         EOF
 199         calc_patch_id nonl <nonl &&
 200         calc_patch_id withnl <withnl &&
 201         test_cmp patch-id_nonl patch-id_withnl
 202 '
 203
 204 test_expect_success 'patch-id handles diffs with one line of before/after' '
 205         cat >diffu1 <<-\EOF &&
 206         diff --git a/bar b/bar
 207         index bdaf90f..31051f6 100644
 208         --- a/bar
 209         +++ b/bar
 210         @@ -2 +2,2 @@
 211          b
 212         +c
 213         diff --git a/car b/car
 214         index 00750ed..2ae5e34 100644
 215         --- a/car
 216         +++ b/car
 217         @@ -1 +1,2 @@
 218          3
 219         +d
 220         diff --git a/foo b/foo
 221         index e439850..7146eb8 100644
 222         --- a/foo
 223         +++ b/foo
 224         @@ -2 +2,2 @@
 225          a
 226         +e
 227         EOF
 228         calc_patch_id diffu1 <diffu1 &&
 229         test_config patchid.stable true &&
 230         calc_patch_id diffu1stable <diffu1
 231 '
 232 test_done