t/t7800-difftool.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2009, 2010, 2012, 2013 David Aguilar
   4 #
   5
   6 test_description='git-difftool
   7
   8 Testing basic diff tool invocation
   9 '
  10
  11 . ./test-lib.sh
  12
  13 difftool_test_setup ()
  14 {
  15         test_config diff.tool test-tool &&
  16         test_config difftool.test-tool.cmd 'cat "$LOCAL"' &&
  17         test_config difftool.bogus-tool.cmd false
  18 }
  19
  20 prompt_given ()
  21 {
  22         prompt="$1"
  23         test "$prompt" = "Launch 'test-tool' [Y/n]: branch"
  24 }
  25
  26 # Create a file on master and change it on branch
  27 test_expect_success PERL 'setup' '
  28         echo master >file &&
  29         git add file &&
  30         git commit -m "added file" &&
  31
  32         git checkout -b branch master &&
  33         echo branch >file &&
  34         git commit -a -m "branch changed file" &&
  35         git checkout master
  36 '
  37
  38 # Configure a custom difftool.<tool>.cmd and use it
  39 test_expect_success PERL 'custom commands' '
  40         difftool_test_setup &&
  41         test_config difftool.test-tool.cmd "cat \"\$REMOTE\"" &&
  42         echo master >expect &&
  43         git difftool --no-prompt branch >actual &&
  44         test_cmp expect actual &&
  45
  46         test_config difftool.test-tool.cmd "cat \"\$LOCAL\"" &&
  47         echo branch >expect &&
  48         git difftool --no-prompt branch >actual &&
  49         test_cmp expect actual
  50 '
  51
  52 test_expect_success PERL 'custom tool commands override built-ins' '
  53         test_config difftool.vimdiff.cmd "cat \"\$REMOTE\"" &&
  54         echo master >expect &&
  55         git difftool --tool vimdiff --no-prompt branch >actual &&
  56         test_cmp expect actual
  57 '
  58
  59 test_expect_success PERL 'difftool ignores bad --tool values' '
  60         : >expect &&
  61         test_must_fail \
  62                 git difftool --no-prompt --tool=bad-tool branch >actual &&
  63         test_cmp expect actual
  64 '
  65
  66 test_expect_success PERL 'difftool forwards arguments to diff' '
  67         difftool_test_setup &&
  68         >for-diff &&
  69         git add for-diff &&
  70         echo changes>for-diff &&
  71         git add for-diff &&
  72         : >expect &&
  73         git difftool --cached --no-prompt -- for-diff >actual &&
  74         test_cmp expect actual &&
  75         git reset -- for-diff &&
  76         rm for-diff
  77 '
  78
  79 test_expect_success PERL 'difftool honors --gui' '
  80         difftool_test_setup &&
  81         test_config merge.tool bogus-tool &&
  82         test_config diff.tool bogus-tool &&
  83         test_config diff.guitool test-tool &&
  84
  85         echo branch >expect &&
  86         git difftool --no-prompt --gui branch >actual &&
  87         test_cmp expect actual
  88 '
  89
  90 test_expect_success PERL 'difftool --gui last setting wins' '
  91         difftool_test_setup &&
  92         : >expect &&
  93         git difftool --no-prompt --gui --no-gui >actual &&
  94         test_cmp expect actual &&
  95
  96         test_config merge.tool bogus-tool &&
  97         test_config diff.tool bogus-tool &&
  98         test_config diff.guitool test-tool &&
  99         echo branch >expect &&
 100         git difftool --no-prompt --no-gui --gui branch >actual &&
 101         test_cmp expect actual
 102 '
 103
 104 test_expect_success PERL 'difftool --gui works without configured diff.guitool' '
 105         difftool_test_setup &&
 106         echo branch >expect &&
 107         git difftool --no-prompt --gui branch >actual &&
 108         test_cmp expect actual
 109 '
 110
 111 # Specify the diff tool using $GIT_DIFF_TOOL
 112 test_expect_success PERL 'GIT_DIFF_TOOL variable' '
 113         difftool_test_setup &&
 114         git config --unset diff.tool &&
 115         echo branch >expect &&
 116         GIT_DIFF_TOOL=test-tool git difftool --no-prompt branch >actual &&
 117         test_cmp expect actual
 118 '
 119
 120 # Test the $GIT_*_TOOL variables and ensure
 121 # that $GIT_DIFF_TOOL always wins unless --tool is specified
 122 test_expect_success PERL 'GIT_DIFF_TOOL overrides' '
 123         difftool_test_setup &&
 124         test_config diff.tool bogus-tool &&
 125         test_config merge.tool bogus-tool &&
 126
 127         echo branch >expect &&
 128         GIT_DIFF_TOOL=test-tool git difftool --no-prompt branch >actual &&
 129         test_cmp expect actual &&
 130
 131         test_config diff.tool bogus-tool &&
 132         test_config merge.tool bogus-tool &&
 133         GIT_DIFF_TOOL=bogus-tool \
 134                 git difftool --no-prompt --tool=test-tool branch >actual &&
 135         test_cmp expect actual
 136 '
 137
 138 # Test that we don't have to pass --no-prompt to difftool
 139 # when $GIT_DIFFTOOL_NO_PROMPT is true
 140 test_expect_success PERL 'GIT_DIFFTOOL_NO_PROMPT variable' '
 141         difftool_test_setup &&
 142         echo branch >expect &&
 143         GIT_DIFFTOOL_NO_PROMPT=true git difftool branch >actual &&
 144         test_cmp expect actual
 145 '
 146
 147 # git-difftool supports the difftool.prompt variable.
 148 # Test that GIT_DIFFTOOL_PROMPT can override difftool.prompt = false
 149 test_expect_success PERL 'GIT_DIFFTOOL_PROMPT variable' '
 150         difftool_test_setup &&
 151         test_config difftool.prompt false &&
 152         echo >input &&
 153         GIT_DIFFTOOL_PROMPT=true git difftool branch <input >output &&
 154         prompt=$(tail -1 <output) &&
 155         prompt_given "$prompt"
 156 '
 157
 158 # Test that we don't have to pass --no-prompt when difftool.prompt is false
 159 test_expect_success PERL 'difftool.prompt config variable is false' '
 160         difftool_test_setup &&
 161         test_config difftool.prompt false &&
 162         echo branch >expect &&
 163         git difftool branch >actual &&
 164         test_cmp expect actual
 165 '
 166
 167 # Test that we don't have to pass --no-prompt when mergetool.prompt is false
 168 test_expect_success PERL 'difftool merge.prompt = false' '
 169         difftool_test_setup &&
 170         test_might_fail git config --unset difftool.prompt &&
 171         test_config mergetool.prompt false &&
 172         echo branch >expect &&
 173         git difftool branch >actual &&
 174         test_cmp expect actual
 175 '
 176
 177 # Test that the -y flag can override difftool.prompt = true
 178 test_expect_success PERL 'difftool.prompt can overridden with -y' '
 179         difftool_test_setup &&
 180         test_config difftool.prompt true &&
 181         echo branch >expect &&
 182         git difftool -y branch >actual &&
 183         test_cmp expect actual
 184 '
 185
 186 # Test that the --prompt flag can override difftool.prompt = false
 187 test_expect_success PERL 'difftool.prompt can overridden with --prompt' '
 188         difftool_test_setup &&
 189         test_config difftool.prompt false &&
 190         echo >input &&
 191         git difftool --prompt branch <input >output &&
 192         prompt=$(tail -1 <output) &&
 193         prompt_given "$prompt"
 194 '
 195
 196 # Test that the last flag passed on the command-line wins
 197 test_expect_success PERL 'difftool last flag wins' '
 198         difftool_test_setup &&
 199         echo branch >expect &&
 200         git difftool --prompt --no-prompt branch >actual &&
 201         test_cmp expect actual &&
 202         echo >input &&
 203         git difftool --no-prompt --prompt branch <input >output &&
 204         prompt=$(tail -1 <output) &&
 205         prompt_given "$prompt"
 206 '
 207
 208 # git-difftool falls back to git-mergetool config variables
 209 # so test that behavior here
 210 test_expect_success PERL 'difftool + mergetool config variables' '
 211         test_config merge.tool test-tool &&
 212         test_config mergetool.test-tool.cmd "cat \$LOCAL" &&
 213         echo branch >expect &&
 214         git difftool --no-prompt branch >actual &&
 215         test_cmp expect actual &&
 216
 217         # set merge.tool to something bogus, diff.tool to test-tool
 218         test_config merge.tool bogus-tool &&
 219         test_config diff.tool test-tool &&
 220         git difftool --no-prompt branch >actual &&
 221         test_cmp expect actual
 222 '
 223
 224 test_expect_success PERL 'difftool.<tool>.path' '
 225         test_config difftool.tkdiff.path echo &&
 226         git difftool --tool=tkdiff --no-prompt branch >output &&
 227         lines=$(grep file output | wc -l) &&
 228         test "$lines" -eq 1
 229 '
 230
 231 test_expect_success PERL 'difftool --extcmd=cat' '
 232         echo branch >expect &&
 233         echo master >>expect &&
 234         git difftool --no-prompt --extcmd=cat branch >actual &&
 235         test_cmp expect actual
 236 '
 237
 238 test_expect_success PERL 'difftool --extcmd cat' '
 239         echo branch >expect &&
 240         echo master >>expect &&
 241         git difftool --no-prompt --extcmd=cat branch >actual &&
 242         test_cmp expect actual
 243 '
 244
 245 test_expect_success PERL 'difftool -x cat' '
 246         echo branch >expect &&
 247         echo master >>expect &&
 248         git difftool --no-prompt -x cat branch >actual &&
 249         test_cmp expect actual
 250 '
 251
 252 test_expect_success PERL 'difftool --extcmd echo arg1' '
 253         echo file >expect &&
 254         git difftool --no-prompt \
 255                 --extcmd sh\ -c\ \"echo\ \$1\" branch >actual &&
 256         test_cmp expect actual
 257 '
 258
 259 test_expect_success PERL 'difftool --extcmd cat arg1' '
 260         echo master >expect &&
 261         git difftool --no-prompt \
 262                 --extcmd sh\ -c\ \"cat\ \$1\" branch >actual &&
 263         test_cmp expect actual
 264 '
 265
 266 test_expect_success PERL 'difftool --extcmd cat arg2' '
 267         echo branch >expect &&
 268         git difftool --no-prompt \
 269                 --extcmd sh\ -c\ \"cat\ \$2\" branch >actual &&
 270         test_cmp expect actual
 271 '
 272
 273 # Create a second file on master and a different version on branch
 274 test_expect_success PERL 'setup with 2 files different' '
 275         echo m2 >file2 &&
 276         git add file2 &&
 277         git commit -m "added file2" &&
 278
 279         git checkout branch &&
 280         echo br2 >file2 &&
 281         git add file2 &&
 282         git commit -a -m "branch changed file2" &&
 283         git checkout master
 284 '
 285
 286 test_expect_success PERL 'say no to the first file' '
 287         (echo n && echo) >input &&
 288         git difftool -x cat branch <input >output &&
 289         grep m2 output &&
 290         grep br2 output &&
 291         ! grep master output &&
 292         ! grep branch output
 293 '
 294
 295 test_expect_success PERL 'say no to the second file' '
 296         (echo && echo n) >input &&
 297         git difftool -x cat branch <input >output &&
 298         grep master output &&
 299         grep branch output &&
 300         ! grep m2 output &&
 301         ! grep br2 output
 302 '
 303
 304 test_expect_success PERL 'difftool --tool-help' '
 305         git difftool --tool-help >output &&
 306         grep tool output
 307 '
 308
 309 test_expect_success PERL 'setup change in subdirectory' '
 310         git checkout master &&
 311         mkdir sub &&
 312         echo master >sub/sub &&
 313         git add sub/sub &&
 314         git commit -m "added sub/sub" &&
 315         echo test >>file &&
 316         echo test >>sub/sub &&
 317         git add file sub/sub &&
 318         git commit -m "modified both"
 319 '
 320
 321 run_dir_diff_test () {
 322         test_expect_success PERL "$1 --no-symlinks" "
 323                 symlinks=--no-symlinks &&
 324                 $2
 325         "
 326         test_expect_success PERL,SYMLINKS "$1 --symlinks" "
 327                 symlinks=--symlinks &&
 328                 $2
 329         "
 330 }
 331
 332 run_dir_diff_test 'difftool -d' '
 333         git difftool -d $symlinks --extcmd ls branch >output &&
 334         grep sub output &&
 335         grep file output
 336 '
 337
 338 run_dir_diff_test 'difftool --dir-diff' '
 339         git difftool --dir-diff $symlinks --extcmd ls branch >output &&
 340         grep sub output &&
 341         grep file output
 342 '
 343
 344 run_dir_diff_test 'difftool --dir-diff ignores --prompt' '
 345         git difftool --dir-diff $symlinks --prompt --extcmd ls branch >output &&
 346         grep sub output &&
 347         grep file output
 348 '
 349
 350 run_dir_diff_test 'difftool --dir-diff from subdirectory' '
 351         (
 352                 cd sub &&
 353                 git difftool --dir-diff $symlinks --extcmd ls branch >output &&
 354                 grep sub output &&
 355                 grep file output
 356         )
 357 '
 358
 359 run_dir_diff_test 'difftool --dir-diff when worktree file is missing' '
 360         test_when_finished git reset --hard &&
 361         rm file2 &&
 362         git difftool --dir-diff $symlinks --extcmd ls branch master >output &&
 363         grep file2 output
 364 '
 365
 366 write_script .git/CHECK_SYMLINKS <<\EOF
 367 for f in file file2 sub/sub
 368 do
 369         echo "$f"
 370         readlink "$2/$f"
 371 done >actual
 372 EOF
 373
 374 test_expect_success PERL,SYMLINKS 'difftool --dir-diff --symlink without unstaged changes' '
 375         cat >expect <<-EOF &&
 376         file
 377         $(pwd)/file
 378         file2
 379         $(pwd)/file2
 380         sub/sub
 381         $(pwd)/sub/sub
 382         EOF
 383         git difftool --dir-diff --symlink \
 384                 --extcmd "./.git/CHECK_SYMLINKS" branch HEAD &&
 385         test_cmp actual expect
 386 '
 387
 388 write_script modify-right-file <<\EOF
 389 echo "new content" >"$2/file"
 390 EOF
 391
 392 run_dir_diff_test 'difftool --dir-diff syncs worktree with unstaged change' '
 393         test_when_finished git reset --hard &&
 394         echo "orig content" >file &&
 395         git difftool -d $symlinks --extcmd "$(pwd)/modify-right-file" branch &&
 396         echo "new content" >expect &&
 397         test_cmp expect file
 398 '
 399
 400 run_dir_diff_test 'difftool --dir-diff syncs worktree without unstaged change' '
 401         test_when_finished git reset --hard &&
 402         git difftool -d $symlinks --extcmd "$(pwd)/modify-right-file" branch &&
 403         echo "new content" >expect &&
 404         test_cmp expect file
 405 '
 406
 407 write_script modify-file <<\EOF
 408 echo "new content" >file
 409 EOF
 410
 411 test_expect_success PERL 'difftool --no-symlinks does not overwrite working tree file ' '
 412         echo "orig content" >file &&
 413         git difftool --dir-diff --no-symlinks --extcmd "$(pwd)/modify-file" branch &&
 414         echo "new content" >expect &&
 415         test_cmp expect file
 416 '
 417
 418 write_script modify-both-files <<\EOF
 419 echo "wt content" >file &&
 420 echo "tmp content" >"$2/file" &&
 421 echo "$2" >tmpdir
 422 EOF
 423
 424 test_expect_success PERL 'difftool --no-symlinks detects conflict ' '
 425         (
 426                 TMPDIR=$TRASH_DIRECTORY &&
 427                 export TMPDIR &&
 428                 echo "orig content" >file &&
 429                 test_must_fail git difftool --dir-diff --no-symlinks --extcmd "$(pwd)/modify-both-files" branch &&
 430                 echo "wt content" >expect &&
 431                 test_cmp expect file &&
 432                 echo "tmp content" >expect &&
 433                 test_cmp expect "$(cat tmpdir)/file"
 434         )
 435 '
 436
 437 test_expect_success PERL 'difftool properly honors gitlink and core.worktree' '
 438         git submodule add ./. submod/ule &&
 439         (
 440                 cd submod/ule &&
 441                 test_config diff.tool checktrees &&
 442                 test_config difftool.checktrees.cmd '\''
 443                         test -d "$LOCAL" && test -d "$REMOTE" && echo good
 444                 '\'' &&
 445                 echo good >expect &&
 446                 git difftool --tool=checktrees --dir-diff HEAD~ >actual &&
 447                 test_cmp expect actual
 448         )
 449 '
 450
 451 test_done