Andrew's git / gitweb.git / t/t4020-diff-external.sh
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t / t4020-diff-external.shon commit t: switch $_z40 to $ZERO_OID (8125a58)
   1#!/bin/sh
   2
   3test_description='external diff interface test'
   4
   5. ./test-lib.sh
   6
   7test_expect_success setup '
   8
   9        test_tick &&
  10        echo initial >file &&
  11        git add file &&
  12        git commit -m initial &&
  13
  14        test_tick &&
  15        echo second >file &&
  16        git add file &&
  17        git commit -m second &&
  18
  19        test_tick &&
  20        echo third >file
  21'
  22
  23test_expect_success 'GIT_EXTERNAL_DIFF environment' '
  24
  25        GIT_EXTERNAL_DIFF=echo git diff | {
  26                read path oldfile oldhex oldmode newfile newhex newmode &&
  27                test "z$path" = zfile &&
  28                test "z$oldmode" = z100644 &&
  29                test "z$newhex" = "z$ZERO_OID" &&
  30                test "z$newmode" = z100644 &&
  31                oh=$(git rev-parse --verify HEAD:file) &&
  32                test "z$oh" = "z$oldhex"
  33        }
  34
  35'
  36
  37test_expect_success 'GIT_EXTERNAL_DIFF environment should apply only to diff' '
  38
  39        GIT_EXTERNAL_DIFF=echo git log -p -1 HEAD |
  40        grep "^diff --git a/file b/file"
  41
  42'
  43
  44test_expect_success 'GIT_EXTERNAL_DIFF environment and --no-ext-diff' '
  45
  46        GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff |
  47        grep "^diff --git a/file b/file"
  48
  49'
  50
  51test_expect_success SYMLINKS 'typechange diff' '
  52        rm -f file &&
  53        ln -s elif file &&
  54        GIT_EXTERNAL_DIFF=echo git diff  | {
  55                read path oldfile oldhex oldmode newfile newhex newmode &&
  56                test "z$path" = zfile &&
  57                test "z$oldmode" = z100644 &&
  58                test "z$newhex" = "z$ZERO_OID" &&
  59                test "z$newmode" = z120000 &&
  60                oh=$(git rev-parse --verify HEAD:file) &&
  61                test "z$oh" = "z$oldhex"
  62        } &&
  63        GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff >actual &&
  64        git diff >expect &&
  65        test_cmp expect actual
  66'
  67
  68test_expect_success 'diff.external' '
  69        git reset --hard &&
  70        echo third >file &&
  71        test_config diff.external echo &&
  72        git diff | {
  73                read path oldfile oldhex oldmode newfile newhex newmode &&
  74                test "z$path" = zfile &&
  75                test "z$oldmode" = z100644 &&
  76                test "z$newhex" = "z$ZERO_OID" &&
  77                test "z$newmode" = z100644 &&
  78                oh=$(git rev-parse --verify HEAD:file) &&
  79                test "z$oh" = "z$oldhex"
  80        }
  81'
  82
  83test_expect_success 'diff.external should apply only to diff' '
  84        test_config diff.external echo &&
  85        git log -p -1 HEAD |
  86        grep "^diff --git a/file b/file"
  87'
  88
  89test_expect_success 'diff.external and --no-ext-diff' '
  90        test_config diff.external echo &&
  91        git diff --no-ext-diff |
  92        grep "^diff --git a/file b/file"
  93'
  94
  95test_expect_success 'diff attribute' '
  96        git reset --hard &&
  97        echo third >file &&
  98
  99        git config diff.parrot.command echo &&
 100
 101        echo >.gitattributes "file diff=parrot" &&
 102
 103        git diff | {
 104                read path oldfile oldhex oldmode newfile newhex newmode &&
 105                test "z$path" = zfile &&
 106                test "z$oldmode" = z100644 &&
 107                test "z$newhex" = "z$ZERO_OID" &&
 108                test "z$newmode" = z100644 &&
 109                oh=$(git rev-parse --verify HEAD:file) &&
 110                test "z$oh" = "z$oldhex"
 111        }
 112
 113'
 114
 115test_expect_success 'diff attribute should apply only to diff' '
 116
 117        git log -p -1 HEAD |
 118        grep "^diff --git a/file b/file"
 119
 120'
 121
 122test_expect_success 'diff attribute and --no-ext-diff' '
 123
 124        git diff --no-ext-diff |
 125        grep "^diff --git a/file b/file"
 126
 127'
 128
 129test_expect_success 'diff attribute' '
 130
 131        git config --unset diff.parrot.command &&
 132        git config diff.color.command echo &&
 133
 134        echo >.gitattributes "file diff=color" &&
 135
 136        git diff | {
 137                read path oldfile oldhex oldmode newfile newhex newmode &&
 138                test "z$path" = zfile &&
 139                test "z$oldmode" = z100644 &&
 140                test "z$newhex" = "z$ZERO_OID" &&
 141                test "z$newmode" = z100644 &&
 142                oh=$(git rev-parse --verify HEAD:file) &&
 143                test "z$oh" = "z$oldhex"
 144        }
 145
 146'
 147
 148test_expect_success 'diff attribute should apply only to diff' '
 149
 150        git log -p -1 HEAD |
 151        grep "^diff --git a/file b/file"
 152
 153'
 154
 155test_expect_success 'diff attribute and --no-ext-diff' '
 156
 157        git diff --no-ext-diff |
 158        grep "^diff --git a/file b/file"
 159
 160'
 161
 162test_expect_success 'GIT_EXTERNAL_DIFF trumps diff.external' '
 163        >.gitattributes &&
 164        test_config diff.external "echo ext-global" &&
 165        GIT_EXTERNAL_DIFF="echo ext-env" git diff | grep ext-env
 166'
 167
 168test_expect_success 'attributes trump GIT_EXTERNAL_DIFF and diff.external' '
 169        test_config diff.foo.command "echo ext-attribute" &&
 170        test_config diff.external "echo ext-global" &&
 171        echo "file diff=foo" >.gitattributes &&
 172        GIT_EXTERNAL_DIFF="echo ext-env" git diff | grep ext-attribute
 173'
 174
 175test_expect_success 'no diff with -diff' '
 176        echo >.gitattributes "file -diff" &&
 177        git diff | grep Binary
 178'
 179
 180echo NULZbetweenZwords | perl -pe 'y/Z/\000/' > file
 181
 182test_expect_success 'force diff with "diff"' '
 183        echo >.gitattributes "file diff" &&
 184        git diff >actual &&
 185        test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL actual
 186'
 187
 188test_expect_success 'GIT_EXTERNAL_DIFF with more than one changed files' '
 189        echo anotherfile > file2 &&
 190        git add file2 &&
 191        git commit -m "added 2nd file" &&
 192        echo modified >file2 &&
 193        GIT_EXTERNAL_DIFF=echo git diff
 194'
 195
 196test_expect_success 'GIT_EXTERNAL_DIFF path counter/total' '
 197        write_script external-diff.sh <<-\EOF &&
 198        echo $GIT_DIFF_PATH_COUNTER of $GIT_DIFF_PATH_TOTAL >>counter.txt
 199        EOF
 200        >counter.txt &&
 201        cat >expect <<-\EOF &&
 202        1 of 2
 203        2 of 2
 204        EOF
 205        GIT_EXTERNAL_DIFF=./external-diff.sh git diff &&
 206        test_cmp expect counter.txt
 207'
 208
 209test_expect_success 'GIT_EXTERNAL_DIFF generates pretty paths' '
 210        touch file.ext &&
 211        git add file.ext &&
 212        echo with extension > file.ext &&
 213        GIT_EXTERNAL_DIFF=echo git diff file.ext | grep ......_file\.ext &&
 214        git update-index --force-remove file.ext &&
 215        rm file.ext
 216'
 217
 218echo "#!$SHELL_PATH" >fake-diff.sh
 219cat >> fake-diff.sh <<\EOF
 220cat $2 >> crlfed.txt
 221EOF
 222chmod a+x fake-diff.sh
 223
 224keep_only_cr () {
 225        tr -dc '\015'
 226}
 227
 228test_expect_success 'external diff with autocrlf = true' '
 229        test_config core.autocrlf true &&
 230        GIT_EXTERNAL_DIFF=./fake-diff.sh git diff &&
 231        test $(wc -l < crlfed.txt) = $(cat crlfed.txt | keep_only_cr | wc -c)
 232'
 233
 234test_expect_success 'diff --cached' '
 235        test_config core.autocrlf true &&
 236        git add file &&
 237        git update-index --assume-unchanged file &&
 238        echo second >file &&
 239        git diff --cached >actual &&
 240        test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL actual
 241'
 242
 243test_expect_success 'clean up crlf leftovers' '
 244        git update-index --no-assume-unchanged file &&
 245        rm -f file* &&
 246        git reset --hard
 247'
 248
 249test_expect_success 'submodule diff' '
 250        git init sub &&
 251        ( cd sub && test_commit sub1 ) &&
 252        git add sub &&
 253        test_tick &&
 254        git commit -m "add submodule" &&
 255        ( cd sub && test_commit sub2 ) &&
 256        write_script gather_pre_post.sh <<-\EOF &&
 257        echo "$1 $4" # path, mode
 258        cat "$2" # old file
 259        cat "$5" # new file
 260        EOF
 261        GIT_EXTERNAL_DIFF=./gather_pre_post.sh git diff >actual &&
 262        cat >expected <<-EOF &&
 263        sub 160000
 264        Subproject commit $(git rev-parse HEAD:sub)
 265        Subproject commit $(cd sub && git rev-parse HEAD)
 266        EOF
 267        test_cmp expected actual
 268'
 269
 270test_done