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2020-08-10Collect merge-related tests to t64xxElijah Newren
The tests for the merge machinery are spread over several places. Collect them into t64xx for simplicity. Some notes: t60[234]*.sh: Merge tests started in t602*, overgrew bisect and remote tracking tests in t6030, t6040, and t6041, and nearly overtook replace tests in t6050. This made picking out relevant tests that I wanted to run in a tighter loop slightly more annoying for years. t303*.sh: These started out as tests for the 'merge-recursive' toplevel command, but did not restrict to that and had lots of overlap with the underlying merge machinery. t7405, t7613: submodule-specific merge logic started out in submodule.c but was moved to merge-recursive.c in commit 18cfc08866 ("submodule.c: move submodule merging to merge-recursive.c", 2018-05-15). Since these tests are about the logic found in the merge machinery, moving these tests to be with the merge tests makes sense. t7607, t7609: Having tests spread all over the place makes it more likely that additional tests related to a certain piece of logic grow in all those other places. Much like t303*.sh, these two tests were about the underlying merge machinery rather than outer levels. Tests that were NOT moved: t76[01]*.sh: Other than the four tests mentioned above, the remaining tests in t76[01]*.sh are related to non-recursive merge strategies, parameter parsing, and other stuff associated with the highlevel builtin/merge.c rather than the recursive merge machinery. t3[45]*.sh: The rebase testcases in t34*.sh also test the merge logic pretty heavily; sometimes changes I make only trigger failures in the rebase tests. The rebase tests are already nicely coupled together, though, and I didn't want to mess that up. Similar comments apply for the cherry-pick tests in t35*.sh. Signed-off-by: Elijah Newren <> Signed-off-by: Junio C Hamano <>
2020-02-27t602[1236], t6034: modernize test formattingElijah Newren
Indent code, and include it inside test_expect* blocks. Signed-off-by: Elijah Newren <> Signed-off-by: Junio C Hamano <>
2018-10-06t/*: fix ordering of expected/observed argumentsMatthew DeVore
Fix various places where the ordering was obviously wrong, meaning it was easy to find with grep. Signed-off-by: Matthew DeVore <> Signed-off-by: Junio C Hamano <>
2016-01-27merge-file: ensure that conflict sections match eol styleJohannes Schindelin
In the previous patch, we made sure that the conflict markers themselves match the end-of-line style of the input files. However, this still left out the conflicting text itself: if it lacks a trailing newline, we add one, and should add a carriage return when appropriate, too. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2016-01-27merge-file: let conflict markers match end-of-line style of the contextJohannes Schindelin
When merging files with CR/LF line endings, the conflict markers should match those, lest the output file has mixed line endings. This is particularly of interest on Windows, where some editors get *really* confused by mixed line endings. The original version of this patch by Beat Bolli respected core.eol, and a subsequent improvement by this developer also respected gitattributes. This approach was suboptimal, though: `git merge-file` was invented as a drop-in replacement for GNU merge and as such has no problem operating outside of any repository at all! Another problem with the original approach was pointed out by Junio Hamano: legacy repositories might have their text files committed using CR/LF line endings (and core.eol and the gitattributes would give us a false impression there). Therefore, the much superior approach is to simply match the context's line endings, if any. We actually do not have to look at the *entire* context at all: if the files are all LF-only, or if they all have CR/LF line endings, it is sufficient to look at just a *single* line to match that style. And if the line endings are mixed anyway, it is *still* okay to imitate just a single line's eol: we will just add to the pile of mixed line endings, and there is nothing we can do about that. So what we do is: we look at the line preceding the conflict, falling back to the line preceding that in case it was the last line and had no line ending, falling back to the first line, first in the first post-image, then the second post-image, and finally the pre-image. If we find consistent CR/LF (or undecided) end-of-line style, we match that, otherwise we use LF-only line endings for the conflict markers. Note that while it is true that there have to be at least two lines we can look at (otherwise there would be no conflict), the same is not true for line *endings*: the three files in question could all consist of a single line without any line ending, each. In this case we fall back to using LF-only. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2015-02-22Merge branch 'ab/merge-file-prefix'Junio C Hamano
"git merge-file" did not work correctly in a subdirectory. * ab/merge-file-prefix: merge-file: correctly open files when in a subdir
2015-02-11merge-file: correctly open files when in a subdirAleksander Boruch-Gruszecki
run_setup_gently() is called before merge-file. This may result in changing current working directory, which wasn't taken into account when opening a file for writing. Fix by prepending the passed prefix. Previous var is left so that error messages keep referring to the file from the user's working directory perspective. Signed-off-by: Aleksander Boruch-Gruszecki <> Signed-off-by: Junio C Hamano <>
2014-06-30git-merge-file: do not add LF at EOF while applying unrelated changeMax Kirillov
If 'current-file' does not contain LF at EOF, and change between 'base-file' and 'other-file' does not change any line close to EOF, the 3-way merge should not add LF to EOF. This is what 'diff3 -m' does, and seems to be a reasonable expectation. The change which introduced the behavior is cd1d61c44f. It always calls function xdl_recs_copy() for sides with add_nl == 1. In fact, it looks like the only case when this is needed is when 2 files are being union-merged, and they do not have LF at EOF (strictly speaking, the first of them). Add tests: * "merge without conflict (missing LF at EOF, away from change in the other file)" and "merge does not add LF away of change", to demonstrate the changed behavior. * "conflict at EOF without LF resolved by --union", to verify that the union-merge at the end inerts newline between versions. * some more tests which I felt like not covering the functionality well Signed-off-by: Max Kirillov <> Acked-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <> fix and mark as broken invalid testsMax Kirillov
Tests "merge without conflict (missing LF at EOF" and "merge result added missing LF" are meaningless - the first one is identical to "merge without conflict" and the second compares results of those identical tests, which are always same. This has been so since their addition in ba1f5f3537. Probably "new4.txt" was meant to be used instead of "new2.txt". Unfortunately, the current merge-file breaks with new4 - conflict is reported. They also fail at that revision if fixed. Fix the file reference to "new4.txt" and mark the tests as failing - they look like legitimate expectations, just not satisfied at time being. Signed-off-by: Max Kirillov <> Acked-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2011-07-19tests: cleanup binary test vector filesVitaliy Ivanov
The test4012.png test vector file that was originally used for t4012 to check operations on binary files was later reused in other tests, making it no longer consistent to name it after a specific test. Rename it to more generic "test-binary-1.png". While at it, rename test9200b to "test-binary-2.png" (even though it is only used by t9200). Signed-off-by: Vitaliy Ivanov <> Signed-off-by: Junio C Hamano <>
2010-10-18merge-file: correctly find files when called in subdirThomas Rast
Since b541248 (merge.conflictstyle: choose between "merge" and "diff3 -m" styles, 2008-08-29), git-merge-file uses setup_directory_gently(), thus cd'ing around to find any possible config files to use. This broke merge-file when it is called from within a subdirectory of a repository, and the arguments are all relative paths. Fix by prepending the prefix, as passed down from the main git setup code, if there is any. Signed-off-by: Thomas Rast <> Signed-off-by: Junio C Hamano <>
2010-03-21merge-file --diff3: add a label for ancestorJonathan Nieder
git merge-file --diff3 can be used to present conflicts hunks including text from the common ancestor. The added information is helpful for resolving a merge by hand, and merge tools can usually grok it because it looks like output from diff3 -m. However, ‘diff3’ includes a label for the merge base on the ||||||| line and some tools cannot parse conflict hunks without such a label. Write the base-name as passed in a -L option (or the name of the ancestor file by default) on that line. git rerere will not have trouble parsing this output, since instead of looking for a newline, it looks for whitespace after the ||||||| marker. Since rerere includes its own code for recreating conflict hunks, conflict identifiers are unaffected. No other code in git tries to parse conflict hunks. Requested-by: Stefan Monnier <> Signed-off-by: Jonathan Nieder <> Signed-off-by: Junio C Hamano <>
2010-03-20Merge branch 'bw/union-merge-refactor'Junio C Hamano
* bw/union-merge-refactor: merge-file: add option to select union merge favor merge-file: add option to specify the marker size refactor merge flags into xmparam_t make union merge an xdl merge favor
2010-03-03merge-file: add option to specify the marker sizeBert Wesarg
This adds the abbility to specify the conflict marker size for merges outside a git repository. Signed-off-by: Bert Wesarg <> Signed-off-by: Junio C Hamano <>
2010-02-25Windows: redirect f[re]open("/dev/null") to f[re]open("nul")Johannes Sixt
On Windows, the equivalent of "/dev/null" is "nul". This implements compatibility wrappers around fopen() and freopen() that check for this particular file name. The new tests exercise code paths where this is relevant. Signed-off-by: Johannes Sixt <> Signed-off-by: Junio C Hamano <>
2010-01-26fix portability issues with $ in double quotesStephen Boyd
Using a dollar sign in double quotes isn't portable. Escape them with a backslash or replace the double quotes with single quotes. Signed-off-by: Stephen Boyd <> Signed-off-by: Junio C Hamano <>
2009-06-02Merge branch 'cb/maint-1.6.0-xdl-merge-fix' into maintJunio C Hamano
* cb/maint-1.6.0-xdl-merge-fix: Change xdl_merge to generate output even for null merges t6023: merge-file fails to output anything for a degenerate merge Conflicts: xdiff/xmerge.c
2009-05-25Change xdl_merge to generate output even for null mergesCharles Bailey
xdl_merge used to have a check to ensure that there was at least some change in one or other side being merged but this suppressed output for the degenerate case when base, local and remote contents were all identical. Removing this check enables correct output in the degenerate case and xdl_free_script handles freeing NULL scripts so there is no need to have the check for these calls. Signed-off-by: Charles Bailey <> Signed-off-by: Junio C Hamano <>
2009-05-25t6023: merge-file fails to output anything for a degenerate mergeCharles Bailey
In the case that merge-file is passed three files with identical contents it wipes the contents of the output file instead of leaving it unchanged. Althought merge-file is porcelain and this will never happen in normal usage, it is still wrong. Signed-off-by: Charles Bailey <> Signed-off-by: Junio C Hamano <>
2008-09-29Merge branch 'jc/better-conflict-resolution'Shawn O. Pearce
* jc/better-conflict-resolution: Fix AsciiDoc errors in merge documentation git-merge documentation: describe how conflict is presented checkout --conflict=<style>: recreate merge in a non-default style checkout -m: recreate merge when checking out of unmerged index git-merge-recursive: learn to honor merge.conflictstyle merge.conflictstyle: choose between "merge" and "diff3 -m" styles rerere: understand "diff3 -m" style conflicts with the original rerere.c: use symbolic constants to keep track of parsing states xmerge.c: "diff3 -m" style clips merge reduction level to EAGER or less xmerge.c: minimum readability fixups xdiff-merge: optionally show conflicts in "diff3 -m" style xdl_fill_merge_buffer(): separate out a too deeply nested function checkout --ours/--theirs: allow checking out one side of a conflicting merge checkout -f: allow ignoring unmerged paths when checking out of the index Conflicts: Documentation/git-checkout.txt builtin-checkout.c builtin-merge-recursive.c t/
2008-09-08t6023-merge-file: Work around non-portable sed usageArjen Laarhoven
OS X sed doesn't understand '\n' on the right side of a substitution. Use a valid substitution character instead and use 'tr' to convert those to a newline. Signed-off-by: Arjen Laarhoven <> Signed-off-by: Junio C Hamano <>
2008-08-31merge.conflictstyle: choose between "merge" and "diff3 -m" stylesJunio C Hamano
This teaches "git merge-file" to honor merge.conflictstyle configuration variable, whose value can be "merge" (default) or "diff3". Signed-off-by: Junio C Hamano <>
2008-08-31xdiff-merge: optionally show conflicts in "diff3 -m" styleJunio C Hamano
When showing conflicting merges, we traditionally followed RCS's merge output format. The output shows: <<<<<<< postimage from one side; ======= postimage of the other side; and >>>>>>> Some poeple find it easier to be able to understand what is going on when they can view the common ancestor's version, which is used by "diff3 -m", which shows: <<<<<<< postimage from one side; ||||||| shared preimage; ======= postimage of the other side; and >>>>>>> This is an initial step to bring that as an optional feature to git. Only "git merge-file" has been converted, with "--diff3" option. 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 <>
2008-07-13t/: Use "test_must_fail git" instead of "! git"Stephan Beyer
This patch changes every occurrence of "! git" -- with the meaning that a git call has to gracefully fail -- into "test_must_fail git". This is useful to - make sure the test does not fail because of a signal, e.g. SIGSEGV, and - advertise the use of "test_must_fail" for new tests. Signed-off-by: Stephan Beyer <> Signed-off-by: Junio C Hamano <>
2008-05-24tests: do not use implicit "git diff --no-index"Junio C Hamano
As a general principle, we should not use "git diff" to validate the results of what git command that is being tested has done. We would not know if we are testing the command in question, or locating a bug in the cute hack of "git diff --no-index". Rather use test_cmp for that purpose. Signed-off-by: Junio C Hamano <>
2008-02-18xdl_merge(): introduce XDL_MERGE_ZEALOUS_ALNUMJohannes Schindelin
When a merge conflicts, there are often common lines that are not really common, such as empty lines or lines containing a single curly bracket. With XDL_MERGE_ZEALOUS_ALNUM, we use the following heuristics: when a hunk does not contain any letters or digits, it is treated as conflicting. In other words, a conflict which used to look like this: <<<<<<< a = 1; ======= output(); >>>>>>> } } } <<<<<<< output(); ======= b = 1; >>>>>>> will look like this with ZEALOUS_ALNUM: <<<<<<< a = 1; } } } output(); ======= output(); } } } b = 1; >>>>>>> To demonstrate this, git-merge-file has been switched from XDL_MERGE_ZEALOUS to XDL_MERGE_ZEALOUS_ALNUM. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2008-02-18xdl_merge(): make XDL_MERGE_ZEALOUS output simplerJohannes Schindelin
When a merge conflicts, there are often less than three common lines between two conflicting regions. Since a conflict takes up as many lines as are conflicting, plus three lines for the commit markers, the output will be shorter (and thus, simpler) in this case, if the common lines will be merged into the conflicting regions. This patch merges up to three common lines into the conflicts. For example, what looked like this before this patch: <<<<<<< if (a == 1) ======= if (a != 0) >>>>>>> { int i; <<<<<<< a = 0; ======= a = !a; >>>>>>> will now look like this: <<<<<<< if (a == 1) { int i; a = 0; ======= if (a != 0) { int i; a = !a; >>>>>>> Suggested Linus (based on ideas by "Voltage Spike" -- if that name is real, it is mighty cool). Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2008-02-02Sane use of test_expect_failureJunio C Hamano
Originally, test_expect_failure was designed to be the opposite of test_expect_success, but this was a bad decision. Most tests run a series of commands that leads to the single command that needs to be tested, like this: test_expect_{success,failure} 'test title' ' setup1 && setup2 && setup3 && what is to be tested ' And expecting a failure exit from the whole sequence misses the point of writing tests. Your setup$N that are supposed to succeed may have failed without even reaching what you are trying to test. The only valid use of test_expect_failure is to check a trivial single command that is expected to fail, which is a minority in tests of Porcelain-ish commands. This large-ish patch rewrites all uses of test_expect_failure to use test_expect_success and rewrites the condition of what is tested, like this: test_expect_success 'test title' ' setup1 && setup2 && setup3 && ! this command should fail ' test_expect_failure is redefined to serve as a reminder that that test *should* succeed but due to a known breakage in git it currently does not pass. So if git-foo command should create a file 'bar' but you discovered a bug that it doesn't, you can write a test like this: test_expect_failure 'git-foo should create bar' ' rm -f bar && git foo && test -f bar ' This construct acts similar to test_expect_success, but instead of reporting "ok/FAIL" like test_expect_success does, the outcome is reported as "FIXED/still broken". 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 <>
2007-06-09Merge branch 'js/merge'Junio C Hamano
* js/merge: git-merge-file: refuse to merge binary files
2007-06-07War on whitespaceJunio C Hamano
This uses "git-apply --whitespace=strip" to fix whitespace errors that have crept in to our source files over time. There are a few files that need to have trailing whitespaces (most notably, test vectors). The results still passes the test, and build result in Documentation/ area is unchanged. Signed-off-by: Junio C Hamano <>
2007-06-05git-merge-file: refuse to merge binary filesJohannes Schindelin
Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2007-04-16Fix permissions on test scriptsAlex Riesen
Make every test executable. Remove exec-attribute from included shell files, they can't used standalone anyway. Signed-off-by: Alex Riesen <> Signed-off-by: Junio C Hamano <>
2007-03-04Get rid of the dependency to GNU diff in the testsJohannes Schindelin
Now that "git diff" handles stdin and relative paths outside the working tree correctly, we can convert all instances of "diff -u" to "git diff". This commit is really the result of $ perl -pi.bak -e 's/diff -u/git diff/' $(git grep -l "diff -u" t/) Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <> (cherry picked from commit c699a40d68215c7e44a5b26117a35c8a56fbd387)
2007-01-16Replace "echo -n" with printf in shell scripts.Jason Riedy
Not all echos know -n. This was causing a test failure in, but not for some reason. Signed-off-by: Jason Riedy <> Signed-off-by: Junio C Hamano <>
2006-12-28xdl_merge(): fix a segmentation fault when refining conflictsJohannes Schindelin
The function xdl_refine_conflicts() tries to break down huge conflicts by doing a diff on the conflicting regions. However, this does not make sense when one side is empty. Worse, when one side is not only empty, but after EOF, the code accessed unmapped memory. Noticed by Luben Tuikov, Shawn Pearce and Alexandre Julliard, the latter providing a test case. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2006-12-06Add builtin merge-file, a minimal replacement for RCS mergeJohannes Schindelin
merge-file has the same syntax as RCS merge, but supports only the "-L" option. For good measure, a test is added, which is quite minimal, though. [jc: further fix for compliation errors included.] Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>