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_PASSES_SANITIZE_LEAK=true
   9 . ./test-lib.sh
  10
  11 test_expect_success 'setup' '
  12         as="a a a a a a a a" && # eight a
  13         test_write_lines $as >foo &&
  14         test_write_lines $as >bar &&
  15         git add foo bar &&
  16         git commit -a -m initial &&
  17         test_write_lines $as b >foo &&
  18         test_write_lines $as b >bar &&
  19         git commit -a -m first &&
  20         git checkout -b same main &&
  21         git commit --amend -m same-msg &&
  22         git checkout -b notsame main &&
  23         echo c >foo &&
  24         echo c >bar &&
  25         git commit --amend -a -m notsame-msg &&
  26         test_write_lines bar foo >bar-then-foo &&
  27         test_write_lines foo bar >foo-then-bar
  28 '
  29
  30 test_expect_success 'patch-id output is well-formed' '
  31         git log -p -1 | git patch-id >output &&
  32         grep "^$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="$1"
  38         shift
  39         git patch-id "$@" |
  40         sed "s/ .*//" >patch-id_"$patch_name" &&
  41         test_line_count -gt 0 patch-id_"$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 "$1" | calc_patch_id "$@"
  50 }
  51
  52 test_expect_success 'patch-id detects equality' '
  53         get_patch_id main &&
  54         get_patch_id same &&
  55         test_cmp patch-id_main patch-id_same
  56 '
  57
  58 test_expect_success 'patch-id detects inequality' '
  59         get_patch_id main &&
  60         get_patch_id notsame &&
  61         ! test_cmp patch-id_main patch-id_notsame
  62 '
  63
  64 test_expect_success 'patch-id supports git-format-patch output' '
  65         get_patch_id main &&
  66         git checkout same &&
  67         git format-patch -1 --stdout | calc_patch_id same &&
  68         test_cmp patch-id_main patch-id_same &&
  69         set $(git format-patch -1 --stdout | git patch-id) &&
  70         test "$2" = $(git rev-parse HEAD)
  71 '
  72
  73 test_expect_success 'whitespace is irrelevant in footer' '
  74         get_patch_id main &&
  75         git checkout same &&
  76         git format-patch -1 --stdout | sed "s/ \$//" | calc_patch_id same &&
  77         test_cmp patch-id_main patch-id_same
  78 '
  79
  80 cmp_patch_id () {
  81         if
  82                 test "$1" = "relevant"
  83         then
  84                 ! test_cmp patch-id_"$2" patch-id_"$3"
  85         else
  86                 test_cmp patch-id_"$2" patch-id_"$3"
  87         fi
  88 }
  89
  90 test_patch_id_file_order () {
  91         relevant="$1"
  92         shift
  93         name="order-${1}-$relevant"
  94         shift
  95         get_top_diff "main" | calc_patch_id "$name" "$@" &&
  96         git checkout same &&
  97         git format-patch -1 --stdout -O foo-then-bar |
  98                 calc_patch_id "ordered-$name" "$@" &&
  99         cmp_patch_id $relevant "$name" "ordered-$name"
 100
 101 }
 102
 103 # combined test for options: add more tests here to make them
 104 # run with all options
 105 test_patch_id () {
 106         test_patch_id_file_order "$@"
 107 }
 108
 109 # small tests with detailed diagnostic for basic options.
 110 test_expect_success 'file order is irrelevant with --stable' '
 111         test_patch_id_file_order irrelevant --stable --stable
 112 '
 113
 114 test_expect_success 'file order is relevant with --unstable' '
 115         test_patch_id_file_order relevant --unstable --unstable
 116 '
 117
 118 #Now test various option combinations.
 119 test_expect_success 'default is unstable' '
 120         test_patch_id relevant default
 121 '
 122
 123 test_expect_success 'patchid.stable = true is stable' '
 124         test_config patchid.stable true &&
 125         test_patch_id irrelevant patchid.stable=true
 126 '
 127
 128 test_expect_success 'patchid.stable = false is unstable' '
 129         test_config patchid.stable false &&
 130         test_patch_id relevant patchid.stable=false
 131 '
 132
 133 test_expect_success '--unstable overrides patchid.stable = true' '
 134         test_config patchid.stable true &&
 135         test_patch_id relevant patchid.stable=true--unstable --unstable
 136 '
 137
 138 test_expect_success '--stable overrides patchid.stable = false' '
 139         test_config patchid.stable false &&
 140         test_patch_id irrelevant patchid.stable=false--stable --stable
 141 '
 142
 143 test_expect_success 'patch-id supports git-format-patch MIME output' '
 144         get_patch_id main &&
 145         git checkout same &&
 146         git format-patch -1 --attach --stdout | calc_patch_id same &&
 147         test_cmp patch-id_main patch-id_same
 148 '
 149
 150 test_expect_success 'patch-id respects config from subdir' '
 151         test_config patchid.stable true &&
 152         mkdir subdir &&
 153
 154         # copy these because test_patch_id() looks for them in
 155         # the current directory
 156         cp bar-then-foo foo-then-bar subdir &&
 157
 158         (
 159                 cd subdir &&
 160                 test_patch_id irrelevant patchid.stable=true
 161         )
 162 '
 163
 164 cat >nonl <<\EOF
 165 diff --git i/a w/a
 166 index e69de29..2e65efe 100644
 167 --- i/a
 168 +++ w/a
 169 @@ -0,0 +1 @@
 170 +a
 171 \ No newline at end of file
 172 diff --git i/b w/b
 173 index e69de29..6178079 100644
 174 --- i/b
 175 +++ w/b
 176 @@ -0,0 +1 @@
 177 +b
 178 EOF
 179
 180 cat >withnl <<\EOF
 181 diff --git i/a w/a
 182 index e69de29..7898192 100644
 183 --- i/a
 184 +++ w/a
 185 @@ -0,0 +1 @@
 186 +a
 187 diff --git i/b w/b
 188 index e69de29..6178079 100644
 189 --- i/b
 190 +++ w/b
 191 @@ -0,0 +1 @@
 192 +b
 193 EOF
 194
 195 test_expect_success 'patch-id handles no-nl-at-eof markers' '
 196         cat nonl | calc_patch_id nonl &&
 197         cat withnl | calc_patch_id withnl &&
 198         test_cmp patch-id_nonl patch-id_withnl
 199 '
 200 test_done