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2021-02-12test libs: rename "diff-lib" to "lib-diff"Ævar Arnfjörð Bjarmason
Rename the "diff-lib" to "lib-diff". With this rename and preceding commits there is no remaining t/*lib* which doesn't follow the convention of being called t/lib-*. Signed-off-by: Ævar Arnfjörð Bjarmason <> Signed-off-by: Junio C Hamano <>
2019-10-28t4011: abstract away SHA-1-specific constantsbrian m. carlson
Adjust the test so that it computes variables for object IDs instead of using hard-coded hashes. Signed-off-by: brian m. carlson <> Signed-off-by: Junio C Hamano <>
2018-08-21tests: use 'test_must_be_empty' instead of '! test -s'SZEDER Gábor
Using 'test_must_be_empty' is preferable to '! test -s', because it gives a helpful error message if the given file is unexpectedly not empty, while the latter remains completely silent. Furthermore, it also catches cases when the given file unexpectedly does not exist at all. This patch was basically created by: sed -i -e 's/! test -s/test_must_be_empty/' t[0-9]*.sh with the following notable exceptions: - The '! test -s' check in '.gitmodules ignore=dirty suppresses submodules with untracked content' in '' is left as-is, because it's bogus and, therefore, it's subject of a dedicated patch. - The '! test -s' checks in '' and '' are immediately preceeded by a 'test -f' to ensure that the files exist in the first place. 'test_must_be_empty' ensures that as well, so those 'test -f' commands are removed as well. Signed-off-by: SZEDER Gábor <> Signed-off-by: Junio C Hamano <>
2018-05-29diff: turn --ita-invisible-in-index on by defaultNguyễn Thái Ngọc Duy
Due to the implementation detail of intent-to-add entries, the current "git diff" (i.e. no treeish or --cached argument) would show the changes in the i-t-a file, but it does not mark the file as new, while "diff --cached" would mark the file as new while showing its content as empty. $ git diff | $ diff --cached --------------------------------|------------------------------- diff --git a/new b/new | diff --git a/new b/new index e69de29..5ad28e2 100644 | new file mode 100644 --- a/new | index 0000000..e69de29 +++ b/new | @@ -0,0 +1 @@ | +haha | One evidence of the current output being wrong is that, the output from "git diff" (with ita entries) cannot be applied because it assumes empty files exist before applying. Turning on --ita-invisible-in-index [1] [2] would fix this. The result is "new file" line moving from "git diff --cached" to "git diff". $ git diff | $ diff --cached --------------------------------|------------------------------- diff --git a/new b/new | new file mode 100644 | index 0000000..5ad28e2 | --- /dev/null | +++ b/new | @@ -0,0 +1 @@ | +haha | This option is on by default in git-status [1] but we need more fixup in rename detection code [3]. Luckily we don't need to do anything else for the rename detection code in diff.c (wt-status.c uses a customized one). [1] 425a28e0a4 (diff-lib: allow ita entries treated as "not yet exist in index" - 2016-10-24) [2] b42b451919 (diff: add --ita-[in]visible-in-index - 2016-10-24) [3] bc3dca07f4 (Merge branch 'nd/ita-wt-renames-in-status' - 2018-01-23) Signed-off-by: Nguyễn Thái Ngọc Duy <> Signed-off-by: Junio C Hamano <>
2018-03-27t/helper: merge test-chmtime into test-toolNguyễn Thái Ngọc Duy
Signed-off-by: Nguyễn Thái Ngọc Duy <> Signed-off-by: Junio C Hamano <>
2015-06-23Revert "diff-lib.c: adjust position of i-t-a entries in diff"Junio C Hamano
This reverts commit d95d728aba06a34394d15466045cbdabdada58a2. It turns out that many other commands that need to interact with the result of running diff-files and diff-index, e.g. "git apply", "git rm", etc., need to be adjusted to the new world order it brings in. For example, it would break this sequence to correct a whitespace breakage in the parts you changed: git add -N file git diff --cached file | git apply --cached --whitespace=fix git checkout file In the old world order, "diff" showed a patch to modify an existing empty file by adding its full contents, and "apply" updated the index by modifying the existing empty blob (which is what an Intent-to-Add entry records in the index) with that patch. In the new world order, "diff" shows a patch to create a new file with its full contents, but because "apply" thinks that the i-t-a entry already exists in the index, it refused to accept a creation. Adjusting "apply" to this new world order is easy, but we need to assess the extent of the damage to the rest of the system the new world order brought in before going forward and adjust them all, after which we can resurrect the commit being reverted here. Signed-off-by: Junio C Hamano <>
2015-03-23diff-lib.c: adjust position of i-t-a entries in diffNguyễn Thái Ngọc Duy
Entries added by "git add -N" are reminder for the user so that they don't forget to add them before committing. These entries appear in the index even though they are not real. Their presence in the index leads to a confusing "git status" like this: On branch master Changes to be committed: new file: foo Changes not staged for commit: modified: foo If you do a "git commit", "foo" will not be included even though "status" reports it as "to be committed". This patch changes the output to become On branch master Changes not staged for commit: new file: foo no changes added to commit The two hunks in diff-lib.c adjust "diff-index" and "diff-files" so that i-t-a entries appear as new files in diff-files and nothing in diff-index. Due to this change, diff-files may start to report "new files" for the first time. "add -u" needs to be told about this or it will die in denial, screaming "new files can't exist! Reality is wrong." Luckily, it's the only one among run_diff_files() callers that needs fixing. Now in the new world order, a hierarchy in the index that contain i-t-a paths is written out as a tree object as if these i-t-a entries do not exist, and comparing the index with such a tree object that would result from writing out the hierarchy will result in no difference. Update a test in t2203 that expected the i-t-a entries to appear as "added to the index" in the comparison to instead expect no output. An earlier change eec3e7e4 (cache-tree: invalidate i-t-a paths after generating trees, 2012-12-16) becomes an unnecessary pessimization in the new world order---a cache-tree in the index that corresponds to a hierarchy with i-t-a paths can now be marked as valid and record the object name of the tree that results from writing a tree object out of that hierarchy, as it will compare equal to that tree. Reverting the commit is left for the future, though, as it is purely a performance issue and no longer affects correctness. Helped-by: Michael J Gruber <> Helped-by: Junio C Hamano <> Signed-off-by: Nguyễn Thái Ngọc Duy <> Signed-off-by: Junio C Hamano <>
2013-06-07t4011: remove SYMLINKS prerequisiteJohannes Sixt
The part of the test that is about symbolic links in the index does not require that the corresponding file system entry is actually a symbolic link. Use test_ln_s_add to insert a symbolic link in the index. When the file system does not support symbolic links, we actually have a regular file in the worktree, which we can update as if it were a symbolic link. diff-index picks up the symbolic link property from the index. Signed-off-by: Johannes Sixt <> Signed-off-by: Junio C Hamano <>
2012-03-01diff -p: squelch "diff --git" header for stat-dirty pathsJunio C Hamano
The plumbing "diff" commands look at the working tree files without refreshing the index themselves for performance reasons (the calling script is expected to do that upfront just once, before calling one or more of them). In the early days of git, they showed the "diff --git" header before they actually ask the xdiff machinery to produce patches, and ended up showing only these headers if the real contents are the same and the difference they noticed was only because the stat info cached in the index did not match that of the working tree. It was too late for the implementation to take the header that it already emitted back. But 3e97c7c (No diff -b/-w output for all-whitespace changes, 2009-11-19) introduced necessary logic to keep the meta-information headers in a strbuf and delay their output until the xdiff machinery noticed actual changes. This was primarily in order to generate patches that ignore whitespaces. When operating under "-w" mode, we wouldn't know if the header is needed until we actually look at the resulting patch, so it was a sensible thing to do, but we did not realize that the same reasoning applies to stat-dirty paths. Later, 296c6bb (diff: fix "git show -C -C" output when renaming a binary file, 2010-05-26) generalized this machinery and added must_show_header toggle. This is turned on when the header must be shown even when there is no patch to be produced, e.g. only the mode was changed, or the path was renamed, without changing the contents. However, when it did so, it still kept the special case for the "-w" mode, which meant that the plumbing would keep showing these phantom changes. This corrects this historical inconsistency by allowing the plumbing to omit paths that are only stat-dirty from its output in the same way as it handles whitespace only changes under "-w" option. The change in the behaviour can be seen in the updated test. Signed-off-by: Junio C Hamano <>
2012-03-01t4011: illustrate "diff-index -p" on stat-dirty pathsJunio C Hamano
The plumbing that looks at the working tree, i.e. "diff-index" and "diff-files", always emit the "diff --git a/path b/path" header lines without anything else for paths that are only stat-dirty (i.e. different only because the cached stat information in the index no longer matches that of the working tree, but the real contents are the same), when these commands are run with "-p" option to produce patches. Illustrate this current behaviour. Also demonstrate that with the "-w" option, we (correctly) hold off showing a "diff --git" header until actual differences have been found. This also suppresses the header for merely stat-dirty files, which is inconsistent. Signed-off-by: Junio C Hamano <>
2012-03-01t4011: modernise styleJunio C Hamano
Match the style to more modern test scripts, namely: - The first line of each test has prereq, title and opening sq for the script body. This makes the test shorter while reducing the need for backslashes. - Be prepared for the case in which the previous test may have failed. If a test wants to start from not having "frotz" that the previous test may have created, write "rm -f frotz", not "rm frotz". - Prepare the expected output inside your own test. - The order of comparison to check the result is "diff expected actual", so that the output will show how the output from the git you just broke is different from what is expected. - Write no SP between redirection '>' (or '<' for that matter) and the filename. Signed-off-by: Junio C Hamano <>
2010-11-17Merge branch 'jk/no-textconv-symlink'Junio C Hamano
* jk/no-textconv-symlink: diff: don't use pathname-based diff drivers for symlinks
2010-09-24diff: don't use pathname-based diff drivers for symlinksJeff King
When we're diffing symlinks, we consider the contents to be the pathname that the symlink points to. When a user sets up a userdiff driver like "*.pdf diff=pdf", their "diff.pdf.*" config generally tells us what to do with the content of pdf files. With the current code, we will actually process a symlink like "link.pdf" using a configured pdf driver, meaning we are using contents which consist of a pathname with configuration that is expecting contents that consist of an actual pdf file. The most noticeable example of this would have been textconv; however, it was already protected in its own textconv-specific code path. We can still see the breakage with something like "diff.*.binary", though. You could also see it with diff.*.funcname, though it is a bit harder to trigger accidentally there. This patch adds a check for S_ISREG lower in the callstack than the textconv-specific check, which should block use of any userdiff config for non-regular files. We can drop the check in the textconv code, which is now redundant. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2010-08-18tests: implicitly skip SYMLINKS tests using <prereq>Ævar Arnfjörð Bjarmason
Change the tests that skipped due to unavailable SYMLINKS support to use the three-arg prereq form of test_expect_success. Now we get an indication of how many tests that need symlinks are being skipped on platforms that don't support them. Signed-off-by: Ævar Arnfjörð Bjarmason <> Signed-off-by: Junio C Hamano <>
2010-06-25tests: Skip tests in a way that makes sense under TAPÆvar Arnfjörð Bjarmason
SKIP messages are now part of the TAP plan. A TAP harness now knows why a particular test was skipped and can report that information. The non-TAP harness built into Git's test-lib did nothing special with these messages, and is unaffected by these changes. Signed-off-by: Ævar Arnfjörð Bjarmason <> Signed-off-by: Junio C Hamano <>
2010-04-07war on "sleep" in testsJunio C Hamano
In many places in test suite we have "sleep"s that do not have to be there. - I do not simply see the point of the one in t3500. It may be making sure that the timestamp order of commits generated during the test is stable, in which case test_tick is the right ingredient to use without wasting tester's time. - The one in t4011 is to make sure that the plumbing diff-index notices the stat-dirtyness of a removed then identically recreated symlink. Keeping the old symlink around to make sure that a newly created symlink gets different ino would be sufficient for that purpose. - The one in t7600 is to make sure that "git merge" does not get confused by stat-dirty "file" in the working tree. Again, keeping the old file around and creating an identical copy to ensure a different ino would be sufficient for that purpose. The "racy git" tests in t0010 are inherently about mtime between the index itself and index entries. The "sleep" in that test must stay as they are. Signed-off-by: Junio C Hamano <>
2009-04-05tests: remove exit after test_done callJeff King
test_done always exits, so this line is never executed. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2009-03-22Use prerequisite tags to skip tests that depend on symbolic linksJohannes Sixt
Many tests depend on that symbolic links work. This introduces a check that sets the prerequisite tag SYMLINKS if the file system supports symbolic links. Since so many tests have to check for this prerequisite, we do the check in, so that we don't need to repeat the test in many scripts. To check for 'ln -s' failures, you can use a FAT partition on Linux: $ mkdosfs -C git-on-fat 1000000 $ sudo mount -o loop,uid=j6t,gid=users,shortname=winnt git-on-fat /mnt Clone git to /mnt and $ GIT_SKIP_TESTS='t0001.1[34] t0010 t1301 t403[34] t4129.[47] t5701.7 t7701.3 t9100 t9101.26 t9119 t9124.[67] t9200.10 t9600.6' \ make test (These additionally skipped tests depend on POSIX permissions that FAT on Linux does not provide.) Signed-off-by: Johannes Sixt <>
2009-01-31Fix 'git diff --no-index' with a non-existing symlink targetJohannes Schindelin
When trying to find out mode changes, we should not access the symlink targets using stat(); instead we use lstat() so that the diff does not fail trying to find a non-existing symlink target. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2008-08-17tests: use $TEST_DIRECTORY to refer to the t/ directoryJunio C Hamano
Many test scripts assumed that they will start in a 'trash' subdirectory that is a single level down from the t/ directory, and referred to their test vector files by asking for files like "../t9999/expect". This will break if we move the 'trash' subdirectory elsewhere. To solve this, we earlier introduced "$TEST_DIRECTORY" so that they can refer to t/ directory reliably. This finally makes all the tests use it to refer to the outside environment. With this patch, and a one-liner not included here (because it would contradict with what Dscho really wants to do): | diff --git a/t/ b/t/ | index 70ea7e0..60e69e4 100644 | --- a/t/ | +++ b/t/ | @@ -485,7 +485,7 @@ fi | . ../GIT-BUILD-OPTIONS | | # Test repository | -test="trash directory" | +test="trash directory/another level/yet another" | rm -fr "$test" || { | trap - exit | echo >&5 "FATAL: Cannot prepare test area" all the tests still pass, but we would want extra sets of eyeballs on this type of change to really make sure. [jc: with help from Stephan Beyer on http-push tests I do not run myself; credits for locating silly quoting errors go to Olivier Marin.] Signed-off-by: Junio C Hamano <>
2007-07-03Rewrite "git-frotz" to "git frotz"Junio C Hamano
This uses the remove-dashes target to replace "git-frotz" to "git frotz". Signed-off-by: Junio C Hamano <>
2006-01-22t4011: "sleep 1" is not enough on FATJunio C Hamano
This test depended on "sleep 1" to be enough to dirty the index entry for a symlink. Alex noticed that on his Cygwin installation "sleep 1" was sometimes not enough, and after further discussion with Christopher Faylor, it was brought up that on FAT filesystem timestamp granularity is 2 seconds so sleeping 1 second is not enough. For now this patch takes an easy workaround of sleeping for 3 seconds. Very strictly speaking, POSIX requires lstat to fill only S_IFMT part of st_mode and st_size for symlinks, and depending on timestamp might be considered a bug, but we depend on that anyway, so it is better to test that. Signed-off-by: Junio C Hamano <>
2005-12-27Handle symlinks graciouslyJohannes Schindelin
This patch converts a stat() to an lstat() call, thereby fixing the case when the date of a symlink was not the same as the one recorded in the index. The included test case demonstrates this. This is for the case that the symlink points to a non-existing file. If the file exists, worse things than just an error message happen. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>