t/t7006-pager.sh

   1 #!/bin/sh
   2
   3 test_description='Test automatic use of a pager.'
   4
   5 . ./test-lib.sh
   6 . "$TEST_DIRECTORY"/lib-pager.sh
   7 . "$TEST_DIRECTORY"/lib-terminal.sh
   8
   9 cleanup_fail() {
  10         echo >&2 cleanup failed
  11         (exit 1)
  12 }
  13
  14 test_expect_success 'setup' '
  15         sane_unset GIT_PAGER GIT_PAGER_IN_USE &&
  16         test_might_fail git config --unset core.pager &&
  17
  18         PAGER="cat >paginated.out" &&
  19         export PAGER &&
  20
  21         test_commit initial
  22 '
  23
  24 test_expect_success TTY 'some commands use a pager' '
  25         rm -f paginated.out ||
  26         cleanup_fail &&
  27
  28         test_terminal git log &&
  29         test -e paginated.out
  30 '
  31
  32 test_expect_failure TTY 'pager runs from subdir' '
  33         echo subdir/paginated.out >expected &&
  34         mkdir -p subdir &&
  35         rm -f paginated.out subdir/paginated.out &&
  36         (
  37                 cd subdir &&
  38                 test_terminal git log
  39         ) &&
  40         {
  41                 ls paginated.out subdir/paginated.out ||
  42                 :
  43         } >actual &&
  44         test_cmp expected actual
  45 '
  46
  47 test_expect_success TTY 'some commands do not use a pager' '
  48         rm -f paginated.out ||
  49         cleanup_fail &&
  50
  51         test_terminal git rev-list HEAD &&
  52         ! test -e paginated.out
  53 '
  54
  55 test_expect_success 'no pager when stdout is a pipe' '
  56         rm -f paginated.out ||
  57         cleanup_fail &&
  58
  59         git log | cat &&
  60         ! test -e paginated.out
  61 '
  62
  63 test_expect_success 'no pager when stdout is a regular file' '
  64         rm -f paginated.out ||
  65         cleanup_fail &&
  66
  67         git log >file &&
  68         ! test -e paginated.out
  69 '
  70
  71 test_expect_success TTY 'git --paginate rev-list uses a pager' '
  72         rm -f paginated.out ||
  73         cleanup_fail &&
  74
  75         test_terminal git --paginate rev-list HEAD &&
  76         test -e paginated.out
  77 '
  78
  79 test_expect_success 'no pager even with --paginate when stdout is a pipe' '
  80         rm -f file paginated.out ||
  81         cleanup_fail &&
  82
  83         git --paginate log | cat &&
  84         ! test -e paginated.out
  85 '
  86
  87 test_expect_success TTY 'no pager with --no-pager' '
  88         rm -f paginated.out ||
  89         cleanup_fail &&
  90
  91         test_terminal git --no-pager log &&
  92         ! test -e paginated.out
  93 '
  94
  95 test_expect_success TTY 'configuration can disable pager' '
  96         rm -f paginated.out &&
  97         test_might_fail git config --unset pager.grep &&
  98         test_terminal git grep initial &&
  99         test -e paginated.out &&
 100
 101         rm -f paginated.out &&
 102         git config pager.grep false &&
 103         test_when_finished "git config --unset pager.grep" &&
 104         test_terminal git grep initial &&
 105         ! test -e paginated.out
 106 '
 107
 108 test_expect_success TTY 'git config uses a pager if configured to' '
 109         rm -f paginated.out &&
 110         git config pager.config true &&
 111         test_when_finished "git config --unset pager.config" &&
 112         test_terminal git config --list &&
 113         test -e paginated.out
 114 '
 115
 116 test_expect_success TTY 'configuration can enable pager (from subdir)' '
 117         rm -f paginated.out &&
 118         mkdir -p subdir &&
 119         git config pager.bundle true &&
 120         test_when_finished "git config --unset pager.bundle" &&
 121
 122         git bundle create test.bundle --all &&
 123         rm -f paginated.out subdir/paginated.out &&
 124         (
 125                 cd subdir &&
 126                 test_terminal git bundle unbundle ../test.bundle
 127         ) &&
 128         {
 129                 test -e paginated.out ||
 130                 test -e subdir/paginated.out
 131         }
 132 '
 133
 134 # A colored commit log will begin with an appropriate ANSI escape
 135 # for the first color; the text "commit" comes later.
 136 colorful() {
 137         read firstline <$1
 138         ! expr "$firstline" : "[a-zA-Z]" >/dev/null
 139 }
 140
 141 test_expect_success 'tests can detect color' '
 142         rm -f colorful.log colorless.log ||
 143         cleanup_fail &&
 144
 145         git log --no-color >colorless.log &&
 146         git log --color >colorful.log &&
 147         ! colorful colorless.log &&
 148         colorful colorful.log
 149 '
 150
 151 test_expect_success 'no color when stdout is a regular file' '
 152         rm -f colorless.log &&
 153         git config color.ui auto ||
 154         cleanup_fail &&
 155
 156         git log >colorless.log &&
 157         ! colorful colorless.log
 158 '
 159
 160 test_expect_success TTY 'color when writing to a pager' '
 161         rm -f paginated.out &&
 162         git config color.ui auto ||
 163         cleanup_fail &&
 164
 165         (
 166                 TERM=vt100 &&
 167                 export TERM &&
 168                 test_terminal git log
 169         ) &&
 170         colorful paginated.out
 171 '
 172
 173 test_expect_success 'color when writing to a file intended for a pager' '
 174         rm -f colorful.log &&
 175         git config color.ui auto ||
 176         cleanup_fail &&
 177
 178         (
 179                 TERM=vt100 &&
 180                 GIT_PAGER_IN_USE=true &&
 181                 export TERM GIT_PAGER_IN_USE &&
 182                 git log >colorful.log
 183         ) &&
 184         colorful colorful.log
 185 '
 186
 187 # Use this helper to make it easy for the caller of your
 188 # terminal-using function to specify whether it should fail.
 189 # If you write
 190 #
 191 #       your_test() {
 192 #               parse_args "$@"
 193 #
 194 #               $test_expectation "$cmd - behaves well" "
 195 #                       ...
 196 #                       $full_command &&
 197 #                       ...
 198 #               "
 199 #       }
 200 #
 201 # then your test can be used like this:
 202 #
 203 #       your_test expect_(success|failure) [test_must_fail] 'git foo'
 204 #
 205 parse_args() {
 206         test_expectation="test_$1"
 207         shift
 208         if test "$1" = test_must_fail
 209         then
 210                 full_command="test_must_fail test_terminal "
 211                 shift
 212         else
 213                 full_command="test_terminal "
 214         fi
 215         cmd=$1
 216         full_command="$full_command $1"
 217 }
 218
 219 test_default_pager() {
 220         parse_args "$@"
 221
 222         $test_expectation SIMPLEPAGER,TTY "$cmd - default pager is used by default" "
 223                 sane_unset PAGER GIT_PAGER &&
 224                 test_might_fail git config --unset core.pager &&
 225                 rm -f default_pager_used ||
 226                 cleanup_fail &&
 227
 228                 cat >\$less <<-\EOF &&
 229                 #!/bin/sh
 230                 wc >default_pager_used
 231                 EOF
 232                 chmod +x \$less &&
 233                 (
 234                         PATH=.:\$PATH &&
 235                         export PATH &&
 236                         $full_command
 237                 ) &&
 238                 test -e default_pager_used
 239         "
 240 }
 241
 242 test_PAGER_overrides() {
 243         parse_args "$@"
 244
 245         $test_expectation TTY "$cmd - PAGER overrides default pager" "
 246                 sane_unset GIT_PAGER &&
 247                 test_might_fail git config --unset core.pager &&
 248                 rm -f PAGER_used ||
 249                 cleanup_fail &&
 250
 251                 PAGER='wc >PAGER_used' &&
 252                 export PAGER &&
 253                 $full_command &&
 254                 test -e PAGER_used
 255         "
 256 }
 257
 258 test_core_pager_overrides() {
 259         if_local_config=
 260         used_if_wanted='overrides PAGER'
 261         test_core_pager "$@"
 262 }
 263
 264 test_local_config_ignored() {
 265         if_local_config='! '
 266         used_if_wanted='is not used'
 267         test_core_pager "$@"
 268 }
 269
 270 test_core_pager() {
 271         parse_args "$@"
 272
 273         $test_expectation TTY "$cmd - repository-local core.pager setting $used_if_wanted" "
 274                 sane_unset GIT_PAGER &&
 275                 rm -f core.pager_used ||
 276                 cleanup_fail &&
 277
 278                 PAGER=wc &&
 279                 export PAGER &&
 280                 git config core.pager 'wc >core.pager_used' &&
 281                 $full_command &&
 282                 ${if_local_config}test -e core.pager_used
 283         "
 284 }
 285
 286 test_core_pager_subdir() {
 287         if_local_config=
 288         used_if_wanted='overrides PAGER'
 289         test_pager_subdir_helper "$@"
 290 }
 291
 292 test_no_local_config_subdir() {
 293         if_local_config='! '
 294         used_if_wanted='is not used'
 295         test_pager_subdir_helper "$@"
 296 }
 297
 298 test_pager_subdir_helper() {
 299         parse_args "$@"
 300
 301         $test_expectation TTY "$cmd - core.pager $used_if_wanted from subdirectory" "
 302                 sane_unset GIT_PAGER &&
 303                 rm -f core.pager_used &&
 304                 rm -fr sub ||
 305                 cleanup_fail &&
 306
 307                 PAGER=wc &&
 308                 stampname=\$(pwd)/core.pager_used &&
 309                 export PAGER stampname &&
 310                 git config core.pager 'wc >\"\$stampname\"' &&
 311                 mkdir sub &&
 312                 (
 313                         cd sub &&
 314                         $full_command
 315                 ) &&
 316                 ${if_local_config}test -e core.pager_used
 317         "
 318 }
 319
 320 test_GIT_PAGER_overrides() {
 321         parse_args "$@"
 322
 323         $test_expectation TTY "$cmd - GIT_PAGER overrides core.pager" "
 324                 rm -f GIT_PAGER_used ||
 325                 cleanup_fail &&
 326
 327                 git config core.pager wc &&
 328                 GIT_PAGER='wc >GIT_PAGER_used' &&
 329                 export GIT_PAGER &&
 330                 $full_command &&
 331                 test -e GIT_PAGER_used
 332         "
 333 }
 334
 335 test_doesnt_paginate() {
 336         parse_args "$@"
 337
 338         $test_expectation TTY "no pager for '$cmd'" "
 339                 rm -f GIT_PAGER_used ||
 340                 cleanup_fail &&
 341
 342                 GIT_PAGER='wc >GIT_PAGER_used' &&
 343                 export GIT_PAGER &&
 344                 $full_command &&
 345                 ! test -e GIT_PAGER_used
 346         "
 347 }
 348
 349 test_pager_choices() {
 350         test_default_pager        expect_success "$@"
 351         test_PAGER_overrides      expect_success "$@"
 352         test_core_pager_overrides expect_success "$@"
 353         test_core_pager_subdir    expect_success "$@"
 354         test_GIT_PAGER_overrides  expect_success "$@"
 355 }
 356
 357 test_expect_success 'setup: some aliases' '
 358         git config alias.aliasedlog log &&
 359         git config alias.true "!true"
 360 '
 361
 362 test_pager_choices                       'git log'
 363 test_pager_choices                       'git -p log'
 364 test_pager_choices                       'git aliasedlog'
 365
 366 test_default_pager        expect_success 'git -p aliasedlog'
 367 test_PAGER_overrides      expect_success 'git -p aliasedlog'
 368 test_core_pager_overrides expect_success 'git -p aliasedlog'
 369 test_core_pager_subdir    expect_failure 'git -p aliasedlog'
 370 test_GIT_PAGER_overrides  expect_success 'git -p aliasedlog'
 371
 372 test_default_pager        expect_success 'git -p true'
 373 test_PAGER_overrides      expect_success 'git -p true'
 374 test_core_pager_overrides expect_success 'git -p true'
 375 test_core_pager_subdir    expect_failure 'git -p true'
 376 test_GIT_PAGER_overrides  expect_success 'git -p true'
 377
 378 test_default_pager        expect_success test_must_fail 'git -p request-pull'
 379 test_PAGER_overrides      expect_success test_must_fail 'git -p request-pull'
 380 test_core_pager_overrides expect_success test_must_fail 'git -p request-pull'
 381 test_core_pager_subdir    expect_failure test_must_fail 'git -p request-pull'
 382 test_GIT_PAGER_overrides  expect_success test_must_fail 'git -p request-pull'
 383
 384 test_default_pager        expect_success test_must_fail 'git -p'
 385 test_PAGER_overrides      expect_success test_must_fail 'git -p'
 386 test_local_config_ignored expect_failure test_must_fail 'git -p'
 387 test_no_local_config_subdir expect_success test_must_fail 'git -p'
 388 test_GIT_PAGER_overrides  expect_success test_must_fail 'git -p'
 389
 390 test_doesnt_paginate      expect_failure test_must_fail 'git -p nonsense'
 391
 392 test_pager_choices                       'git shortlog'
 393 test_expect_success 'setup: configure shortlog not to paginate' '
 394         git config pager.shortlog false
 395 '
 396 test_doesnt_paginate      expect_success 'git shortlog'
 397 test_no_local_config_subdir expect_success 'git shortlog'
 398 test_default_pager        expect_success 'git -p shortlog'
 399 test_core_pager_subdir    expect_success 'git -p shortlog'
 400
 401 test_core_pager_subdir    expect_success test_must_fail \
 402                                          'git -p apply </dev/null'
 403
 404 test_done