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Junio C Hamano 4340a813d0 Merge branch 'js/forkexec'
* js/forkexec:
  Use the asyncronous function infrastructure to run the content filter.
  Avoid a dup2(2) in apply_filter() - start_command() can do it for us.
  t0021-conversion.sh: Test that the clean filter really cleans content.
  upload-pack: Run rev-list in an asynchronous function.
  upload-pack: Move the revision walker into a separate function.
  Use the asyncronous function infrastructure in builtin-fetch-pack.c.
  Add infrastructure to run a function asynchronously.
  upload-pack: Use start_command() to run pack-objects in create_pack_file().
  Have start_command() create a pipe to read the stderr of the child.
  Use start_comand() in builtin-fetch-pack.c instead of explicit fork/exec.
  Use run_command() to spawn external diff programs instead of fork/exec.
  Use start_command() to run content filters instead of explicit fork/exec.
  Use start_command() in git_connect() instead of explicit fork/exec.
  Change git_connect() to return a struct child_process instead of a pid_t.

Conflicts:

	builtin-fetch-pack.c
2007-11-01 13:47:47 -07:00
..
t3900
t4013 Clean up "git log" format with DIFF_FORMAT_NO_OUTPUT 2007-10-15 20:24:27 -04:00
t4100
t4101
t5100
t5515 Correct handling of branch.$name.merge in builtin-fetch 2007-09-19 03:22:31 -07:00
t7004
t7500 Teach git-commit about commit message templates. 2007-07-24 20:46:54 -07:00
t9110
t9111
t9115 git-svn: fix commiting renames over DAV with funky file names 2007-07-15 22:35:09 -07:00
.gitignore
annotate-tests.sh
diff-lib.sh
lib-git-svn.sh git-svn: fix commiting renames over DAV with funky file names 2007-07-15 22:35:09 -07:00
lib-read-tree-m-3way.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
Makefile Use $(RM) in Makefiles instead of 'rm -f' 2007-07-14 23:31:01 -07:00
README
t0000-basic.sh Add is_absolute_path() and make_absolute_path() 2007-08-01 00:38:30 -07:00
t0001-init.sh Fix initialization of a bare repository 2007-08-27 22:36:43 -07:00
t0010-racy-git.sh
t0020-crlf.sh attr: fix segfault in gitattributes parsing code 2007-10-18 21:11:27 -04:00
t0021-conversion.sh t0021-conversion.sh: Test that the clean filter really cleans content. 2007-10-21 01:30:42 -04:00
t0022-crlf-rename.sh
t0023-crlf-am.sh Fix racy-git handling in git-write-tree. 2007-08-24 18:53:02 -07:00
t0030-stripspace.sh Teach "git stripspace" the --strip-comments option 2007-07-26 22:51:44 -07:00
t1000-read-tree-m-3way.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1001-read-tree-m-2way.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1002-read-tree-m-u-2way.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1003-read-tree-prefix.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1004-read-tree-m-u-wf.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1020-subdirectory.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1100-commit-tree-options.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1200-tutorial.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t1300-repo-config.sh Add a test for git-config --file 2007-07-31 22:56:15 -07:00
t1301-shared-repo.sh t1301-shared-repo.sh: fix 'stat' portability issue 2007-08-16 15:32:46 -07:00
t1400-update-ref.sh Cleanup unnecessary file modifications in t1400-update-ref 2007-09-05 23:17:04 -07:00
t1410-reflog.sh
t1420-lost-found.sh git-fsck: add --lost-found option 2007-07-02 21:34:12 -07:00
t1500-rev-parse.sh Reinstate the old behaviour when GIT_DIR is set and GIT_WORK_TREE is unset 2007-08-10 01:12:07 -07:00
t1501-worktree.sh Fix setup_git_directory_gently() with relative GIT_DIR & GIT_WORK_TREE 2007-10-16 20:18:04 -04:00
t2000-checkout-cache-clash.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2001-checkout-cache-clash.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2002-checkout-cache-u.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2003-checkout-cache-mkdir.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2004-checkout-cache-temp.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2005-checkout-index-symlinks.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2007-checkout-symlink.sh Teach read-tree 2-way merge to ignore intermediate symlinks 2007-07-12 02:22:53 -07:00
t2050-git-dir-relative.sh Add a test for git-commit being confused by relative GIT_DIR 2007-08-13 21:19:48 -07:00
t2100-update-cache-badpath.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2101-update-index-reupdate.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2102-update-index-symlinks.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t2200-add-update.sh Add test to check recent fix to "git add -u" 2007-09-14 14:30:05 -07:00
t3000-ls-files-others.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3001-ls-files-others-exclude.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3002-ls-files-dashpath.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3010-ls-files-killed-modified.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3020-ls-files-error-unmatch.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3030-merge-recursive.sh
t3040-subprojects-basic.sh
t3050-subprojects-fetch.sh Make thin-pack generation subproject aware. 2007-08-19 11:44:47 -07:00
t3060-ls-files-with-tree.sh Add test case for ls-files --with-tree 2007-10-03 00:53:24 -07:00
t3100-ls-tree-restrict.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3101-ls-tree-dirname.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3200-branch.sh branch --track: code cleanup and saner handling of local branches 2007-07-11 16:03:58 -07:00
t3210-pack-refs.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3300-funny-names.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3400-rebase.sh apply --index-info: fall back to current index for mode changes 2007-09-16 18:20:10 -07:00
t3401-rebase-partial.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3402-rebase-merge.sh
t3403-rebase-skip.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3404-rebase-interactive.sh Merge branch 'js/rebase-i' 2007-10-03 03:05:39 -07:00
t3405-rebase-malformed.sh rebase: try not to munge commit log message 2007-07-29 23:29:04 -07:00
t3406-rebase-message.sh rebase -m: Fix incorrect short-logs of already applied commits. 2007-09-01 02:23:05 -07:00
t3500-cherry.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3501-revert-cherry-pick.sh
t3600-rm.sh More permissive "git-rm --cached" behavior without -f. 2007-07-13 23:52:46 -07:00
t3700-add.sh git-add: Add support for --refresh option. 2007-08-13 12:58:38 -07:00
t3800-mktag.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3900-i18n-commit.sh Clean up "git log" format with DIFF_FORMAT_NO_OUTPUT 2007-10-15 20:24:27 -04:00
t3901-8859-1.txt
t3901-i18n-patch.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t3901-utf8.txt
t3902-quoted.sh t3902 - skip test if file system doesn't support HT in names 2007-08-13 12:58:38 -07:00
t3903-stash.sh Make sure git-stash works from subdirectory. 2007-07-25 15:34:52 -07:00
t4000-diff-format.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4001-diff-rename.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4002-diff-basic.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4003-diff-rename-1.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4004-diff-rename-symlink.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4005-diff-rename-2.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4006-diff-mode.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4007-rename-3.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4008-diff-break-rewrite.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4009-diff-rename-4.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4010-diff-pathspec.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4011-diff-symlink.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4012-diff-binary.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4013-diff-various.sh Merge branch 'maint' 2007-07-03 22:56:59 -07:00
t4014-format-patch.sh t/t4014: test "am -3" with mode-only change. 2007-09-18 15:19:47 -07:00
t4015-diff-whitespace.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4016-diff-quote.sh
t4017-diff-retval.sh
t4017-quiet.sh
t4018-diff-funcname.sh Fix configuration syntax to specify customized hunk header patterns. 2007-07-07 01:49:58 -07:00
t4020-diff-external.sh diff: honor binariness specified in attributes 2007-07-07 12:25:11 -07:00
t4100-apply-stat.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4101-apply-nonl.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4102-apply-rename.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4103-apply-binary.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4104-apply-boundary.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4109-apply-multifrag.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4110-apply-scan.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4112-apply-renames.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4113-apply-ending.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4114-apply-typechange.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4115-apply-symlink.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4116-apply-reverse.sh Merge branch 'maint' 2007-07-07 12:29:09 -07:00
t4117-apply-reject.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4118-apply-empty-context.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4119-apply-config.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4120-apply-popt.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4121-apply-diffs.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t4122-apply-symlink-inside.sh
t4123-apply-shrink.sh git-apply: do not read past the end of buffer 2007-09-05 21:58:40 -07:00
t4200-rerere.sh rerere: record resolution even if file is not in merge base 2007-07-09 23:39:59 -07:00
t4201-shortlog.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t5000-tar-tree.sh archive: fix subst file generation 2007-09-13 23:20:47 -07:00
t5100-mailinfo.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t5300-pack-object.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t5301-sliding-window.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t5302-pack-index.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t5400-send-pack.sh send-pack: respect '+' on wildcard refspecs 2007-10-19 22:59:10 -04:00
t5401-update-hooks.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t5402-post-merge-hook.sh Add post-merge hook, related documentation, and tests. 2007-09-18 17:40:24 -07:00
t5403-post-checkout-hook.sh fix t5403-post-checkout-hook.sh: built-in test in dash does not have "==" 2007-10-15 20:26:01 -04:00
t5500-fetch-pack.sh git-clone: aggressively optimize local clone behaviour. 2007-08-01 23:42:36 -07:00
t5502-quickfetch.sh
t5505-remote.sh git-remote rm: add tests and minor fix-ups 2007-09-23 22:29:12 -07:00
t5510-fetch.sh fetch: if not fetching from default remote, ignore default merge 2007-10-16 01:24:18 -04:00
t5515-fetch-merge-logic.sh Don't attempt to merge non-existant remotes in t5515 2007-09-19 03:22:31 -07:00
t5516-fetch-push.sh t5516: test update of local refs on push 2007-10-18 03:46:00 -04:00
t5520-pull.sh
t5600-clone-fail-cleanup.sh
t5700-clone-reference.sh fetch: if not fetching from default remote, ignore default merge 2007-10-16 01:24:18 -04:00
t5701-clone-local.sh git-clone: allow --bare clone 2007-08-15 21:39:07 -07:00
t5710-info-alternate.sh
t6000lib.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6001-rev-list-graft.sh
t6002-rev-list-bisect.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6003-rev-list-topo-order.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6004-rev-list-path-optim.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6005-rev-list-count.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6006-rev-list-format.sh Don't use "<unknown>" for placeholders and suppress printing of empty user formats. 2007-09-26 00:40:47 -07:00
t6007-rev-list-cherry-pick-file.sh revision walker: --cherry-pick is a limited operation 2007-09-15 16:34:11 -07:00
t6010-merge-base.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6020-merge-df.sh
t6021-merge-criss-cross.sh
t6022-merge-rename.sh
t6023-merge-file.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6023-merge-rename-nocruft.sh
t6024-recursive-merge.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6025-merge-symlinks.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6026-merge-attr.sh
t6027-merge-binary.sh merge-recursive: do not rudely die on binary merge 2007-08-14 22:20:01 -07:00
t6028-merge-up-to-date.sh git-merge: do up-to-date check also for all strategies 2007-08-27 23:48:28 -07:00
t6030-bisect-porcelain.sh Bisect run: "skip" current commit if script exit code is 125. 2007-10-26 23:27:24 -07:00
t6101-rev-parse-parents.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6120-describe.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t6200-fmt-merge-msg.sh
t6300-for-each-ref.sh Add a test script for for-each-ref, including test of date formatting 2007-10-03 01:34:25 -07:00
t7001-mv.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t7002-grep.sh Split grep arguments in a way that does not requires to add /dev/null. 2007-09-14 15:16:43 -07:00
t7003-filter-branch.sh filter-branch: update current branch when rewritten 2007-10-16 22:47:51 -04:00
t7004-tag.sh git-tag -s must fail if gpg cannot sign the tag. 2007-09-09 21:30:54 -07:00
t7005-editor.sh Test suite: reset TERM to its previous value after testing. 2007-10-26 23:17:19 -07:00
t7101-reset.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t7102-reset.sh An additional test for "git-reset -- path" 2007-09-13 20:54:14 -07:00
t7201-co.sh
t7300-clean.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t7400-submodule-basic.sh git-diff: don't squelch the new SHA1 in submodule diffs 2007-09-09 02:28:57 -07:00
t7500-commit.sh Don't use "<unknown>" for placeholders and suppress printing of empty user formats. 2007-09-26 00:40:47 -07:00
t7501-commit.sh git-commit: partial commit of paths only removed from the index 2007-09-17 23:57:35 -07:00
t7600-merge.sh git-merge: add --ff and --no-ff options 2007-09-23 17:14:03 -07:00
t8001-annotate.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t8002-blame.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t8003-blame.sh
t8004-blame.sh git-blame shouldn't crash if run in an unmerged tree 2007-10-18 02:31:30 -04:00
t9001-send-email.sh Fixed minor typo in t/t9001-send-email.sh test command line. 2007-09-24 23:01:42 -07:00
t9100-git-svn-basic.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t9101-git-svn-props.sh git-svn: add git svn proplist 2007-10-17 02:47:37 -04:00
t9102-git-svn-deep-rmdir.sh
t9104-git-svn-follow-parent.sh git-svn: handle changed svn command-line syntax 2007-09-21 02:42:16 -07:00
t9105-git-svn-commit-diff.sh
t9106-git-svn-commit-diff-clobber.sh git-svn: fix dcommit clobbering upstream when committing multiple changes 2007-08-31 23:22:51 -07:00
t9107-git-svn-migrate.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t9108-git-svn-glob.sh
t9110-git-svn-use-svm-props.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t9111-git-svn-use-svnsync-props.sh Rewrite "git-frotz" to "git frotz" 2007-07-02 22:52:14 -07:00
t9112-git-svn-md5less-file.sh
t9113-git-svn-dcommit-new-file.sh
t9114-git-svn-dcommit-merge.sh
t9115-git-svn-dcommit-funky-renames.sh git-svn: fix commiting renames over DAV with funky file names 2007-07-15 22:35:09 -07:00
t9116-git-svn-log.sh git-svn: fix log with single revision against a non-HEAD branch 2007-08-15 12:09:48 -07:00
t9200-git-cvsexportcommit.sh t9200: Be careful when checking CVS/Entries 2007-07-25 00:06:38 -07:00
t9300-fast-import.sh Allow frontends to bidirectionally communicate with fast-import 2007-08-19 03:38:36 -04:00
t9400-git-cvsserver-server.sh
t9500-gitweb-standalone-no-errors.sh gitweb: speed up project listing on large work trees by limiting find depth 2007-10-17 01:23:33 -04:00
test-lib.sh Support a --quiet option in the test-suite. 2007-10-24 22:44:14 -07:00
test4012.png
test9200a.png
test9200b.png

Core GIT Tests
==============

This directory holds many test scripts for core GIT tools.  The
first part of this short document describes how to run the tests
and read their output.

When fixing the tools or adding enhancements, you are strongly
encouraged to add tests in this directory to cover what you are
trying to fix or enhance.  The later part of this short document
describes how your test scripts should be organized.


Running Tests
-------------

The easiest way to run tests is to say "make".  This runs all
the tests.

    *** t0000-basic.sh ***
    *   ok 1: .git/objects should be empty after git-init in an empty repo.
    *   ok 2: .git/objects should have 256 subdirectories.
    *   ok 3: git-update-index without --add should fail adding.
    ...
    *   ok 23: no diff after checkout and git-update-index --refresh.
    * passed all 23 test(s)
    *** t0100-environment-names.sh ***
    *   ok 1: using old names should issue warnings.
    *   ok 2: using old names but having new names should not issue warnings.
    ...

Or you can run each test individually from command line, like
this:

    $ sh ./t3001-ls-files-killed.sh
    *   ok 1: git-update-index --add to add various paths.
    *   ok 2: git-ls-files -k to show killed files.
    *   ok 3: validate git-ls-files -k output.
    * passed all 3 test(s)

You can pass --verbose (or -v), --debug (or -d), and --immediate
(or -i) command line argument to the test.

--verbose::
	This makes the test more verbose.  Specifically, the
	command being run and their output if any are also
	output.

--debug::
	This may help the person who is developing a new test.
	It causes the command defined with test_debug to run.

--immediate::
	This causes the test to immediately exit upon the first
	failed test.


Naming Tests
------------

The test files are named as:

	tNNNN-commandname-details.sh

where N is a decimal digit.

First digit tells the family:

	0 - the absolute basics and global stuff
	1 - the basic commands concerning database
	2 - the basic commands concerning the working tree
	3 - the other basic commands (e.g. ls-files)
	4 - the diff commands
	5 - the pull and exporting commands
	6 - the revision tree commands (even e.g. merge-base)
	7 - the porcelainish commands concerning the working tree
	8 - the porcelainish commands concerning forensics
	9 - the git tools

Second digit tells the particular command we are testing.

Third digit (optionally) tells the particular switch or group of switches
we are testing.

If you create files under t/ directory (i.e. here) that is not
the top-level test script, never name the file to match the above
pattern.  The Makefile here considers all such files as the
top-level test script and tries to run all of them.  A care is
especially needed if you are creating a common test library
file, similar to test-lib.sh, because such a library file may
not be suitable for standalone execution.


Writing Tests
-------------

The test script is written as a shell script.  It should start
with the standard "#!/bin/sh" with copyright notices, and an
assignment to variable 'test_description', like this:

	#!/bin/sh
	#
	# Copyright (c) 2005 Junio C Hamano
	#

	test_description='xxx test (option --frotz)

	This test registers the following structure in the cache
	and tries to run git-ls-files with option --frotz.'


Source 'test-lib.sh'
--------------------

After assigning test_description, the test script should source
test-lib.sh like this:

	. ./test-lib.sh

This test harness library does the following things:

 - If the script is invoked with command line argument --help
   (or -h), it shows the test_description and exits.

 - Creates an empty test directory with an empty .git/objects
   database and chdir(2) into it.  This directory is 't/trash'
   if you must know, but I do not think you care.

 - Defines standard test helper functions for your scripts to
   use.  These functions are designed to make all scripts behave
   consistently when command line arguments --verbose (or -v),
   --debug (or -d), and --immediate (or -i) is given.


End with test_done
------------------

Your script will be a sequence of tests, using helper functions
from the test harness library.  At the end of the script, call
'test_done'.


Test harness library
--------------------

There are a handful helper functions defined in the test harness
library for your script to use.

 - test_expect_success <message> <script>

   This takes two strings as parameter, and evaluates the
   <script>.  If it yields success, test is considered
   successful.  <message> should state what it is testing.

   Example:

	test_expect_success \
	    'git-write-tree should be able to write an empty tree.' \
	    'tree=$(git-write-tree)'

 - test_expect_failure <message> <script>

   This is the opposite of test_expect_success.  If <script>
   yields success, test is considered a failure.

   Example:

	test_expect_failure \
	    'git-update-index without --add should fail adding.' \
	    'git-update-index should-be-empty'

 - test_debug <script>

   This takes a single argument, <script>, and evaluates it only
   when the test script is started with --debug command line
   argument.  This is primarily meant for use during the
   development of a new test script.

 - test_done

   Your test script must have test_done at the end.  Its purpose
   is to summarize successes and failures in the test script and
   exit with an appropriate error code.


Tips for Writing Tests
----------------------

As with any programming projects, existing programs are the best
source of the information.  However, do _not_ emulate
t0000-basic.sh when writing your tests.  The test is special in
that it tries to validate the very core of GIT.  For example, it
knows that there will be 256 subdirectories under .git/objects/,
and it knows that the object ID of an empty tree is a certain
40-byte string.  This is deliberately done so in t0000-basic.sh
because the things the very basic core test tries to achieve is
to serve as a basis for people who are changing the GIT internal
drastically.  For these people, after making certain changes,
not seeing failures from the basic test _is_ a failure.  And
such drastic changes to the core GIT that even changes these
otherwise supposedly stable object IDs should be accompanied by
an update to t0000-basic.sh.

However, other tests that simply rely on basic parts of the core
GIT working properly should not have that level of intimate
knowledge of the core GIT internals.  If all the test scripts
hardcoded the object IDs like t0000-basic.sh does, that defeats
the purpose of t0000-basic.sh, which is to isolate that level of
validation in one place.  Your test also ends up needing
updating when such a change to the internal happens, so do _not_
do it and leave the low level of validation to t0000-basic.sh.