t/t7800-difftool.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2009, 2010 David Aguilar
   4 #
   5
   6 test_description='git-difftool
   7
   8 Testing basic diff tool invocation
   9 '
  10
  11 . ./test-lib.sh
  12
  13 remove_config_vars()
  14 {
  15         # Unset all config variables used by git-difftool
  16         git config --unset diff.tool
  17         git config --unset diff.guitool
  18         git config --unset difftool.test-tool.cmd
  19         git config --unset difftool.prompt
  20         git config --unset merge.tool
  21         git config --unset mergetool.test-tool.cmd
  22         git config --unset mergetool.prompt
  23         return 0
  24 }
  25
  26 restore_test_defaults()
  27 {
  28         # Restores the test defaults used by several tests
  29         remove_config_vars
  30         unset GIT_DIFF_TOOL
  31         unset GIT_DIFFTOOL_PROMPT
  32         unset GIT_DIFFTOOL_NO_PROMPT
  33         git config diff.tool test-tool &&
  34         git config difftool.test-tool.cmd 'cat $LOCAL'
  35         git config difftool.bogus-tool.cmd false
  36 }
  37
  38 prompt_given()
  39 {
  40         prompt="$1"
  41         test "$prompt" = "Launch 'test-tool' [Y/n]: branch"
  42 }
  43
  44 stdin_contains()
  45 {
  46         grep >/dev/null "$1"
  47 }
  48
  49 stdin_doesnot_contain()
  50 {
  51         ! stdin_contains "$1"
  52 }
  53
  54 # Create a file on master and change it on branch
  55 test_expect_success PERL 'setup' '
  56         echo master >file &&
  57         git add file &&
  58         git commit -m "added file" &&
  59
  60         git checkout -b branch master &&
  61         echo branch >file &&
  62         git commit -a -m "branch changed file" &&
  63         git checkout master
  64 '
  65
  66 # Configure a custom difftool.<tool>.cmd and use it
  67 test_expect_success PERL 'custom commands' '
  68         restore_test_defaults &&
  69         git config difftool.test-tool.cmd "cat \$REMOTE" &&
  70
  71         diff=$(git difftool --no-prompt branch) &&
  72         test "$diff" = "master" &&
  73
  74         restore_test_defaults &&
  75         diff=$(git difftool --no-prompt branch) &&
  76         test "$diff" = "branch"
  77 '
  78
  79 # Ensures that git-difftool ignores bogus --tool values
  80 test_expect_success PERL 'difftool ignores bad --tool values' '
  81         diff=$(git difftool --no-prompt --tool=bad-tool branch)
  82         test "$?" = 1 &&
  83         test "$diff" = ""
  84 '
  85
  86 test_expect_success PERL 'difftool honors --gui' '
  87         git config merge.tool bogus-tool &&
  88         git config diff.tool bogus-tool &&
  89         git config diff.guitool test-tool &&
  90
  91         diff=$(git difftool --no-prompt --gui branch) &&
  92         test "$diff" = "branch" &&
  93
  94         restore_test_defaults
  95 '
  96
  97 test_expect_success PERL 'difftool --gui last setting wins' '
  98         git config diff.guitool bogus-tool &&
  99         git difftool --no-prompt --gui --no-gui &&
 100
 101         git config merge.tool bogus-tool &&
 102         git config diff.tool bogus-tool &&
 103         git config diff.guitool test-tool &&
 104         diff=$(git difftool --no-prompt --no-gui --gui branch) &&
 105         test "$diff" = "branch" &&
 106
 107         restore_test_defaults
 108 '
 109
 110 test_expect_success PERL 'difftool --gui works without configured diff.guitool' '
 111         git config diff.tool test-tool &&
 112
 113         diff=$(git difftool --no-prompt --gui branch) &&
 114         test "$diff" = "branch" &&
 115
 116         restore_test_defaults
 117 '
 118
 119 # Specify the diff tool using $GIT_DIFF_TOOL
 120 test_expect_success PERL 'GIT_DIFF_TOOL variable' '
 121         test_might_fail git config --unset diff.tool &&
 122         GIT_DIFF_TOOL=test-tool &&
 123         export GIT_DIFF_TOOL &&
 124
 125         diff=$(git difftool --no-prompt branch) &&
 126         test "$diff" = "branch" &&
 127
 128         restore_test_defaults
 129 '
 130
 131 # Test the $GIT_*_TOOL variables and ensure
 132 # that $GIT_DIFF_TOOL always wins unless --tool is specified
 133 test_expect_success PERL 'GIT_DIFF_TOOL overrides' '
 134         git config diff.tool bogus-tool &&
 135         git config merge.tool bogus-tool &&
 136
 137         GIT_DIFF_TOOL=test-tool &&
 138         export GIT_DIFF_TOOL &&
 139
 140         diff=$(git difftool --no-prompt branch) &&
 141         test "$diff" = "branch" &&
 142
 143         GIT_DIFF_TOOL=bogus-tool &&
 144         export GIT_DIFF_TOOL &&
 145
 146         diff=$(git difftool --no-prompt --tool=test-tool branch) &&
 147         test "$diff" = "branch" &&
 148
 149         restore_test_defaults
 150 '
 151
 152 # Test that we don't have to pass --no-prompt to difftool
 153 # when $GIT_DIFFTOOL_NO_PROMPT is true
 154 test_expect_success PERL 'GIT_DIFFTOOL_NO_PROMPT variable' '
 155         GIT_DIFFTOOL_NO_PROMPT=true &&
 156         export GIT_DIFFTOOL_NO_PROMPT &&
 157
 158         diff=$(git difftool branch) &&
 159         test "$diff" = "branch" &&
 160
 161         restore_test_defaults
 162 '
 163
 164 # git-difftool supports the difftool.prompt variable.
 165 # Test that GIT_DIFFTOOL_PROMPT can override difftool.prompt = false
 166 test_expect_success PERL 'GIT_DIFFTOOL_PROMPT variable' '
 167         git config difftool.prompt false &&
 168         GIT_DIFFTOOL_PROMPT=true &&
 169         export GIT_DIFFTOOL_PROMPT &&
 170
 171         prompt=$(echo | git difftool branch | tail -1) &&
 172         prompt_given "$prompt" &&
 173
 174         restore_test_defaults
 175 '
 176
 177 # Test that we don't have to pass --no-prompt when difftool.prompt is false
 178 test_expect_success PERL 'difftool.prompt config variable is false' '
 179         git config difftool.prompt false &&
 180
 181         diff=$(git difftool branch) &&
 182         test "$diff" = "branch" &&
 183
 184         restore_test_defaults
 185 '
 186
 187 # Test that we don't have to pass --no-prompt when mergetool.prompt is false
 188 test_expect_success PERL 'difftool merge.prompt = false' '
 189         test_might_fail git config --unset difftool.prompt &&
 190         git config mergetool.prompt false &&
 191
 192         diff=$(git difftool branch) &&
 193         test "$diff" = "branch" &&
 194
 195         restore_test_defaults
 196 '
 197
 198 # Test that the -y flag can override difftool.prompt = true
 199 test_expect_success PERL 'difftool.prompt can overridden with -y' '
 200         git config difftool.prompt true &&
 201
 202         diff=$(git difftool -y branch) &&
 203         test "$diff" = "branch" &&
 204
 205         restore_test_defaults
 206 '
 207
 208 # Test that the --prompt flag can override difftool.prompt = false
 209 test_expect_success PERL 'difftool.prompt can overridden with --prompt' '
 210         git config difftool.prompt false &&
 211
 212         prompt=$(echo | git difftool --prompt branch | tail -1) &&
 213         prompt_given "$prompt" &&
 214
 215         restore_test_defaults
 216 '
 217
 218 # Test that the last flag passed on the command-line wins
 219 test_expect_success PERL 'difftool last flag wins' '
 220         diff=$(git difftool --prompt --no-prompt branch) &&
 221         test "$diff" = "branch" &&
 222
 223         restore_test_defaults &&
 224
 225         prompt=$(echo | git difftool --no-prompt --prompt branch | tail -1) &&
 226         prompt_given "$prompt" &&
 227
 228         restore_test_defaults
 229 '
 230
 231 # git-difftool falls back to git-mergetool config variables
 232 # so test that behavior here
 233 test_expect_success PERL 'difftool + mergetool config variables' '
 234         remove_config_vars &&
 235         git config merge.tool test-tool &&
 236         git config mergetool.test-tool.cmd "cat \$LOCAL" &&
 237
 238         diff=$(git difftool --no-prompt branch) &&
 239         test "$diff" = "branch" &&
 240
 241         # set merge.tool to something bogus, diff.tool to test-tool
 242         git config merge.tool bogus-tool &&
 243         git config diff.tool test-tool &&
 244
 245         diff=$(git difftool --no-prompt branch) &&
 246         test "$diff" = "branch" &&
 247
 248         restore_test_defaults
 249 '
 250
 251 test_expect_success PERL 'difftool.<tool>.path' '
 252         git config difftool.tkdiff.path echo &&
 253         diff=$(git difftool --tool=tkdiff --no-prompt branch) &&
 254         git config --unset difftool.tkdiff.path &&
 255         lines=$(echo "$diff" | grep file | wc -l) &&
 256         test "$lines" -eq 1 &&
 257
 258         restore_test_defaults
 259 '
 260
 261 test_expect_success PERL 'difftool --extcmd=cat' '
 262         diff=$(git difftool --no-prompt --extcmd=cat branch) &&
 263         test "$diff" = branch"$LF"master
 264 '
 265
 266 test_expect_success PERL 'difftool --extcmd cat' '
 267         diff=$(git difftool --no-prompt --extcmd cat branch) &&
 268         test "$diff" = branch"$LF"master
 269 '
 270
 271 test_expect_success PERL 'difftool -x cat' '
 272         diff=$(git difftool --no-prompt -x cat branch) &&
 273         test "$diff" = branch"$LF"master
 274 '
 275
 276 test_expect_success PERL 'difftool --extcmd echo arg1' '
 277         diff=$(git difftool --no-prompt --extcmd sh\ -c\ \"echo\ \$1\" branch) &&
 278         test "$diff" = file
 279 '
 280
 281 test_expect_success PERL 'difftool --extcmd cat arg1' '
 282         diff=$(git difftool --no-prompt --extcmd sh\ -c\ \"cat\ \$1\" branch) &&
 283         test "$diff" = master
 284 '
 285
 286 test_expect_success PERL 'difftool --extcmd cat arg2' '
 287         diff=$(git difftool --no-prompt --extcmd sh\ -c\ \"cat\ \$2\" branch) &&
 288         test "$diff" = branch
 289 '
 290
 291 # Create a second file on master and a different version on branch
 292 test_expect_success PERL 'setup with 2 files different' '
 293         echo m2 >file2 &&
 294         git add file2 &&
 295         git commit -m "added file2" &&
 296
 297         git checkout branch &&
 298         echo br2 >file2 &&
 299         git add file2 &&
 300         git commit -a -m "branch changed file2" &&
 301         git checkout master
 302 '
 303
 304 test_expect_success PERL 'say no to the first file' '
 305         diff=$( (echo n; echo) | git difftool -x cat branch ) &&
 306
 307         echo "$diff" | stdin_contains m2 &&
 308         echo "$diff" | stdin_contains br2 &&
 309         echo "$diff" | stdin_doesnot_contain master &&
 310         echo "$diff" | stdin_doesnot_contain branch
 311 '
 312
 313 test_expect_success PERL 'say no to the second file' '
 314         diff=$( (echo; echo n) | git difftool -x cat branch ) &&
 315
 316         echo "$diff" | stdin_contains master &&
 317         echo "$diff" | stdin_contains branch &&
 318         echo "$diff" | stdin_doesnot_contain m2 &&
 319         echo "$diff" | stdin_doesnot_contain br2
 320 '
 321
 322 test_done