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   1#!/bin/sh
   2#
   3# Copyright (c) 2009, 2010, 2012, 2013 David Aguilar
   4#
   5
   6test_description='git-difftool
   7
   8Testing basic diff tool invocation
   9'
  10
  11. ./test-lib.sh
  12
  13difftool_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
  20prompt_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
  27test_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
  39test_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
  52test_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
  59test_expect_success PERL 'difftool ignores bad --tool values' '
  60        : >expect &&
  61        test_expect_code 1 \
  62                git difftool --no-prompt --tool=bad-tool branch >actual &&
  63        test_cmp expect actual
  64'
  65
  66test_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
  79test_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
  90test_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
 104test_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
 112test_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
 122test_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 $GIT_DIFFTOOL_NO_PROMPT is true
 140test_expect_success PERL 'GIT_DIFFTOOL_NO_PROMPT variable' '
 141        difftool_test_setup &&
 142        echo branch >expect &&
 143        GIT_DIFFTOOL_NO_PROMPT=true git difftool branch >actual &&
 144        test_cmp expect actual
 145'
 146
 147# git-difftool supports the difftool.prompt variable.
 148# Test that GIT_DIFFTOOL_PROMPT can override difftool.prompt = false
 149test_expect_success PERL 'GIT_DIFFTOOL_PROMPT variable' '
 150        difftool_test_setup &&
 151        test_config difftool.prompt false &&
 152        echo >input &&
 153        GIT_DIFFTOOL_PROMPT=true git difftool branch <input >output &&
 154        prompt=$(tail -1 <output) &&
 155        prompt_given "$prompt"
 156'
 157
 158# Test that we don't have to pass --no-prompt when difftool.prompt is false
 159test_expect_success PERL 'difftool.prompt config variable is false' '
 160        difftool_test_setup &&
 161        test_config difftool.prompt false &&
 162        echo branch >expect &&
 163        git difftool branch >actual &&
 164        test_cmp expect actual
 165'
 166
 167# Test that we don't have to pass --no-prompt when mergetool.prompt is false
 168test_expect_success PERL 'difftool merge.prompt = false' '
 169        difftool_test_setup &&
 170        test_might_fail git config --unset difftool.prompt &&
 171        test_config mergetool.prompt false &&
 172        echo branch >expect &&
 173        git difftool branch >actual &&
 174        test_cmp expect actual
 175'
 176
 177# Test that the -y flag can override difftool.prompt = true
 178test_expect_success PERL 'difftool.prompt can overridden with -y' '
 179        difftool_test_setup &&
 180        test_config difftool.prompt true &&
 181        echo branch >expect &&
 182        git difftool -y branch >actual &&
 183        test_cmp expect actual
 184'
 185
 186# Test that the --prompt flag can override difftool.prompt = false
 187test_expect_success PERL 'difftool.prompt can overridden with --prompt' '
 188        difftool_test_setup &&
 189        test_config difftool.prompt false &&
 190        echo >input &&
 191        git difftool --prompt branch <input >output &&
 192        prompt=$(tail -1 <output) &&
 193        prompt_given "$prompt"
 194'
 195
 196# Test that the last flag passed on the command-line wins
 197test_expect_success PERL 'difftool last flag wins' '
 198        difftool_test_setup &&
 199        echo branch >expect &&
 200        git difftool --prompt --no-prompt branch >actual &&
 201        test_cmp expect actual &&
 202        echo >input &&
 203        git difftool --no-prompt --prompt branch <input >output &&
 204        prompt=$(tail -1 <output) &&
 205        prompt_given "$prompt"
 206'
 207
 208# git-difftool falls back to git-mergetool config variables
 209# so test that behavior here
 210test_expect_success PERL 'difftool + mergetool config variables' '
 211        test_config merge.tool test-tool &&
 212        test_config mergetool.test-tool.cmd "cat \$LOCAL" &&
 213        echo branch >expect &&
 214        git difftool --no-prompt branch >actual &&
 215        test_cmp expect actual &&
 216
 217        # set merge.tool to something bogus, diff.tool to test-tool
 218        test_config merge.tool bogus-tool &&
 219        test_config diff.tool test-tool &&
 220        git difftool --no-prompt branch >actual &&
 221        test_cmp expect actual
 222'
 223
 224test_expect_success PERL 'difftool.<tool>.path' '
 225        test_config difftool.tkdiff.path echo &&
 226        git difftool --tool=tkdiff --no-prompt branch >output &&
 227        lines=$(grep file output | wc -l) &&
 228        test "$lines" -eq 1
 229'
 230
 231test_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
 238test_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
 245test_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
 252test_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
 259test_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
 266test_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
 274test_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
 286test_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
 295test_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
 304test_expect_success PERL 'difftool --tool-help' '
 305        git difftool --tool-help >output &&
 306        grep tool output
 307'
 308
 309test_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
 321run_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
 332run_dir_diff_test 'difftool -d' '
 333        git difftool -d $symlinks --extcmd ls branch >output &&
 334        grep sub output &&
 335        grep file output
 336'
 337
 338run_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
 344run_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
 350run_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
 359run_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 $symlinks --extcmd ls branch master >output &&
 363        grep file2 output
 364'
 365
 366write_script .git/CHECK_SYMLINKS <<\EOF
 367for f in file file2 sub/sub
 368do
 369        echo "$f"
 370        readlink "$2/$f"
 371done >actual
 372EOF
 373
 374test_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
 388write_script modify-right-file <<\EOF
 389echo "new content" >"$2/file"
 390EOF
 391
 392run_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
 400run_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
 407write_script modify-file <<\EOF
 408echo "new content" >file
 409EOF
 410
 411test_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
 418write_script modify-both-files <<\EOF
 419echo "wt content" >file &&
 420echo "tmp content" >"$2/file" &&
 421echo "$2" >tmpdir
 422EOF
 423
 424test_expect_success PERL 'difftool --no-symlinks detects conflict ' '
 425        (
 426                TMPDIR=$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
 437test_done