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2021-01-24grep/pcre2: better support invalid UTF-8 haystacksLibravatar Ævar Arnfjörð Bjarmason1-0/+1
Improve the support for invalid UTF-8 haystacks given a non-ASCII needle when using the PCREv2 backend. This is a more complete fix for a bug I started to fix in 870eea8166 (grep: do not enter PCRE2_UTF mode on fixed matching, 2019-07-26), now that PCREv2 has the PCRE2_MATCH_INVALID_UTF mode we can make use of it. This fixes the sort of case described in 8a5999838e (grep: stess test PCRE v2 on invalid UTF-8 data, 2019-07-26), i.e.: - The subject string is non-ASCII (e.g. "ævar") - We're under a is_utf8_locale(), e.g. "en_US.UTF-8", not "C" - We are using --ignore-case, or we're a non-fixed pattern If those conditions were satisfied and we matched found non-valid UTF-8 data PCREv2 might bark on it, in practice this only happened under the JIT backend (turned on by default on most platforms). Ultimately this fixes a "regression" in b65abcafc7 ("grep: use PCRE v2 for optimized fixed-string search", 2019-07-01), I'm putting that in scare-quotes because before then we wouldn't properly support these complex case-folding, locale etc. cases either, it just broke in different ways. There was a bug related to this the PCRE2_NO_START_OPTIMIZE flag fixed in PCREv2 10.36. It can be worked around by setting the PCRE2_NO_START_OPTIMIZE flag. Let's do that in those cases, and add tests for the bug. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-18Merge branch 'en/merge-ort-api-null-impl'Libravatar Junio C Hamano1-0/+1
Preparation for a new merge strategy. * en/merge-ort-api-null-impl: merge,rebase,revert: select ort or recursive by config or environment fast-rebase: demonstrate merge-ort's API via new test-tool command merge-ort-wrappers: new convience wrappers to mimic the old merge API merge-ort: barebones API of new merge strategy with empty implementation
2020-11-18Merge branch 'ds/maintenance-part-3'Libravatar Junio C Hamano1-0/+1
Parts of "git maintenance" to ease writing crontab entries (and other scheduling system configuration) for it. * ds/maintenance-part-3: maintenance: add troubleshooting guide to docs maintenance: use 'incremental' strategy by default maintenance: create maintenance.strategy config maintenance: add start/stop subcommands maintenance: add [un]register subcommands for-each-repo: run subcommands on configured repos maintenance: add --schedule option and config maintenance: optionally skip --auto process
2020-10-29fast-rebase: demonstrate merge-ort's API via new test-tool commandLibravatar Elijah Newren1-0/+1
Add a new test-tool command named 'fast-rebase', which is a super-slimmed down and nowhere near as capable version of 'git rebase'. 'test-tool fast-rebase' is not currently planned for usage in the testsuite, but is here for two purposes: 1) Demonstrate the desired API of merge-ort. In particular, fast-rebase takes advantage of the separation of the merging operation from the updating of the index and working tree, to allow it to pick N commits, but only update the index and working tree once at the end. Look for the calls to merge_incore_nonrecursive() and merge_switch_to_result(). 2) Provide a convenient benchmark that isn't polluted by the heavy disk writing and forking of unnecessary processes that comes from sequencer.c and merge-recursive.c. fast-rebase is not meant to replace sequencer.c, just give ideas on how sequencer.c can be changed. Updating sequencer.c with these goals is probably a large amount of work; writing a simple targeted command with no documentation, less-than-useful help messages, numerous limitations in terms of flags it can accept and situations it can handle, and which is flagged off from users is a much easier interim step. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-25maintenance: add start/stop subcommandsLibravatar Derrick Stolee1-0/+1
Add new subcommands to 'git maintenance' that start or stop background maintenance using 'cron', when available. This integration is as simple as I could make it, barring some implementation complications. The schedule is laid out as follows: 0 1-23 * * * $cmd maintenance run --schedule=hourly 0 0 * * 1-6 $cmd maintenance run --schedule=daily 0 0 * * 0 $cmd maintenance run --schedule=weekly where $cmd is a properly-qualified 'git for-each-repo' execution: $cmd=$path/git --exec-path=$path for-each-repo --config=maintenance.repo where $path points to the location of the Git executable running 'git maintenance start'. This is critical for systems with multiple versions of Git. Specifically, macOS has a system version at '/usr/bin/git' while the version that users can install resides at '/usr/local/bin/git' (symlinked to '/usr/local/libexec/git-core/git'). This will also use your locally-built version if you build and run this in your development environment without installing first. This conditional schedule avoids having cron launch multiple 'git for-each-repo' commands in parallel. Such parallel commands would likely lead to the 'hourly' and 'daily' tasks competing over the object database lock. This could lead to to some tasks never being run! Since the --schedule=<frequency> argument will run all tasks with _at least_ the given frequency, the daily runs will also run the hourly tasks. Similarly, the weekly runs will also run the daily and hourly tasks. The GIT_TEST_CRONTAB environment variable is not intended for users to edit, but instead as a way to mock the 'crontab [-l]' command. This variable is set in test-lib.sh to avoid a future test from accidentally running anything with the cron integration from modifying the user's schedule. We use GIT_TEST_CRONTAB='test-tool crontab <file>' in our tests to check how the schedule is modified in 'git maintenance (start|stop)' commands. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-27receive-pack: add new proc-receive hookLibravatar Jiang Xin1-0/+1
Git calls an internal `execute_commands` function to handle commands sent from client to `git-receive-pack`. Regardless of what references the user pushes, git creates or updates the corresponding references if the user has write-permission. A contributor who has no write-permission, cannot push to the repository directly. So, the contributor has to write commits to an alternate location, and sends pull request by emails or by other ways. We call this workflow as a distributed workflow. It would be more convenient to work in a centralized workflow like what Gerrit provided for some cases. For example, a read-only user who cannot push to a branch directly can run the following `git push` command to push commits to a pseudo reference (has a prefix "refs/for/", not "refs/heads/") to create a code review. git push origin \ HEAD:refs/for/<branch-name>/<session> The `<branch-name>` in the above example can be as simple as "master", or a more complicated branch name like "foo/bar". The `<session>` in the above example command can be the local branch name of the client side, such as "my/topic". We cannot implement a centralized workflow elegantly by using "pre-receive" + "post-receive", because Git will call the internal function "execute_commands" to create references (even the special pseudo reference) between these two hooks. Even though we can delete the temporarily created pseudo reference via the "post-receive" hook, having a temporary reference is not safe for concurrent pushes. So, add a filter and a new handler to support this kind of workflow. The filter will check the prefix of the reference name, and if the command has a special reference name, the filter will turn a specific field (`run_proc_receive`) on for the command. Commands with this filed turned on will be executed by a new handler (a hook named "proc-receive") instead of the internal `execute_commands` function. We can use this "proc-receive" command to create pull requests or send emails for code review. Suggested by Junio, this "proc-receive" hook reads the commands, push-options (optional), and send result using a protocol in pkt-line format. In the following example, the letter "S" stands for "receive-pack" and letter "H" stands for the hook. # Version and features negotiation. S: PKT-LINE(version=1\0push-options atomic...) S: flush-pkt H: PKT-LINE(version=1\0push-options...) H: flush-pkt # Send commands from server to the hook. S: PKT-LINE(<old-oid> <new-oid> <ref>) S: ... ... S: flush-pkt # Send push-options only if the 'push-options' feature is enabled. S: PKT-LINE(push-option) S: ... ... S: flush-pkt # Receive result from the hook. # OK, run this command successfully. H: PKT-LINE(ok <ref>) # NO, I reject it. H: PKT-LINE(ng <ref> <reason>) # Fall through, let 'receive-pack' to execute it. H: PKT-LINE(ok <ref>) H: PKT-LINE(option fall-through) # OK, but has an alternate reference. The alternate reference name # and other status can be given in options H: PKT-LINE(ok <ref>) H: PKT-LINE(option refname <refname>) H: PKT-LINE(option old-oid <old-oid>) H: PKT-LINE(option new-oid <new-oid>) H: PKT-LINE(option forced-update) H: ... ... H: flush-pkt After receiving a command, the hook will execute the command, and may create/update different reference. For example, a command for a pseudo reference "refs/for/master/topic" may create/update different reference such as "refs/pull/123/head". The alternate reference name and other status are given in option lines. The list of commands returned from "proc-receive" will replace the relevant commands that are sent from user to "receive-pack", and "receive-pack" will continue to run the "execute_commands" function and other routines. Finally, the result of the execution of these commands will be reported to end user. The reporting function from "receive-pack" to "send-pack" will be extended in latter commit just like what the "proc-receive" hook reports to "receive-pack". Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-05-01Merge branch 'gs/commit-graph-path-filter'Libravatar Junio C Hamano1-0/+1
Introduce an extension to the commit-graph to make it efficient to check for the paths that were modified at each commit using Bloom filters. * gs/commit-graph-path-filter: bloom: ignore renames when computing changed paths commit-graph: add GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS test flag t4216: add end to end tests for git log with Bloom filters revision.c: add trace2 stats around Bloom filter usage revision.c: use Bloom filters to speed up path based revision walks commit-graph: add --changed-paths option to write subcommand commit-graph: reuse existing Bloom filters during write commit-graph: write Bloom filters to commit graph file commit-graph: examine commits by generation number commit-graph: examine changed-path objects in pack order commit-graph: compute Bloom filters for changed paths diff: halt tree-diff early after max_changes bloom.c: core Bloom filter implementation for changed paths. bloom.c: introduce core Bloom filter constructs bloom.c: add the murmur3 hash implementation commit-graph: define and use MAX_NUM_CHUNKS
2020-04-22Merge branch 'jk/oid-array-cleanups'Libravatar Junio C Hamano1-1/+1
Code cleanup. * jk/oid-array-cleanups: oidset: stop referring to sha1-array ref-filter: stop referring to "sha1 array" bisect: stop referring to sha1_array test-tool: rename sha1-array to oid-array oid_array: rename source file from sha1-array oid_array: use size_t for iteration oid_array: use size_t for count and allocation
2020-04-22Merge branch 'js/trace2-env-vars'Libravatar Junio C Hamano1-0/+1
Trace2 enhancement to allow logging of the environment variables. * js/trace2-env-vars: trace2: teach Git to log environment variables
2020-03-30test-tool: rename sha1-array to oid-arrayLibravatar Jeff King1-1/+1
This matches the actual data structure name, as well as the source file that contains the code we're testing. The test scripts need updating to use the new name, as well. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-30bloom.c: add the murmur3 hash implementationLibravatar Garima Singh1-0/+1
In preparation for computing changed paths Bloom filters, implement the Murmur3 hash algorithm as described in [1]. It hashes the given data using the given seed and produces a uniformly distributed hash value. [1] https://en.wikipedia.org/wiki/MurmurHash#Algorithm Helped-by: Derrick Stolee <dstolee@microsoft.com> Helped-by: Szeder Gábor <szeder.dev@gmail.com> Reviewed-by: Jakub Narębski <jnareb@gmail.com> Signed-off-by: Garima Singh <garima.singh@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-25Merge branch 'hw/advise-ng'Libravatar Junio C Hamano1-0/+1
Revamping of the advise API to allow more systematic enumeration of advice knobs in the future. * hw/advise-ng: tag: use new advice API to check visibility advice: revamp advise API advice: change "setupStreamFailure" to "setUpstreamFailure" advice: extract vadvise() from advise()
2020-03-23trace2: teach Git to log environment variablesLibravatar Josh Steadmon1-0/+1
Via trace2, Git can already log interesting config parameters (see the trace2_cmd_list_config() function). However, this can grant an incomplete picture because many config parameters also allow overrides via environment variables. To allow for more complete logs, we add a new trace2_cmd_list_env_vars() function and supporting implementation, modeled after the pre-existing config param logging implementation. Signed-off-by: Josh Steadmon <steadmon@google.com> Acked-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-05advice: revamp advise APILibravatar Heba Waly1-0/+1
Currently it's very easy for the advice library's callers to miss checking the visibility step before printing an advice. Also, it makes more sense for this step to be handled by the advice library. Add a new advise_if_enabled function that checks the visibility of advice messages before printing. Add a new helper advise_enabled to check the visibility of the advice if the caller needs to carry out complicated processing based on that value. A list of advice_settings is added to cache the config variables names and values, it's intended to replace advice_config[] and the global variables once we migrate all the callers to use the new APIs. Signed-off-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15t: directly test parse_pathspec_file()Libravatar Alexandr Miloslavskiy1-0/+1
Previously, `parse_pathspec_file()` was tested indirectly by invoking git commands with properly crafted inputs. As demonstrated by the previous bugfix, testing complicated black boxes indirectly can lead to tests that silently test the wrong thing. Introduce direct tests for `parse_pathspec_file()`. Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-13test-tool: use 'read-graph' helperLibravatar Derrick Stolee1-0/+1
The 'git commit-graph read' subcommand is used in test scripts to check that the commit-graph contents match the expected data. Mostly, this helps check the header information and the list of chunks. Users do not need this information, so move the functionality to a test helper. Reported-by: Bryan Turner <bturner@atlassian.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17Test the progress displayLibravatar SZEDER Gábor1-0/+1
'progress.c' has seen a few fixes recently [1], and, unfortunately, some of those fixes required further fixes [2]. It seems it's time to have a few tests focusing on the subtleties of the progress display. Add the 'test-tool progress' subcommand to help testing the progress display, reading instructions from standard input and turning them into calls to the display_progress() and display_throughput() functions with the given parameters. The progress display is, however, critically dependent on timing, because it's only updated once every second or, if the toal is known in advance, every 1%, and there is the throughput rate as well. These make the progress display far too undeterministic for testing as-is. To address this, add a few testing-specific variables and functions to 'progress.c', allowing the the new test helper to: - Disable the triggered-every-second SIGALRM and set the 'progress_update' flag explicitly based in the input instructions. This way the progress line will be updated deterministically when the test wants it to be updated. - Specify the time elapsed since start_progress() to make the throughput rate calculations deterministic. Add the new test script 't0500-progress-display.sh' to check a few simple cases with and without throughput, and that a shorter progress line properly covers up the previously displayed line in different situations. [1] See commits 545dc345eb (progress: break too long progress bar lines, 2019-04-12) and 9f1fd84e15 (progress: clear previous progress update dynamically, 2019-04-12). [2] 1aed1a5f25 (progress: avoid empty line when breaking the progress line, 2019-05-19) Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-25Merge branch 'mt/dir-iterator-updates'Libravatar Junio C Hamano1-0/+1
Adjust the dir-iterator API and apply it to the local clone optimization codepath. * mt/dir-iterator-updates: clone: replace strcmp by fspathcmp clone: use dir-iterator to avoid explicit dir traversal clone: extract function from copy_or_link_directory clone: copy hidden paths at local clone dir-iterator: add flags parameter to dir_iterator_begin dir-iterator: refactor state machine model dir-iterator: use warning_errno when possible dir-iterator: add tests for dir-iterator API clone: better handle symlinked files at .git/objects/ clone: test for our behavior on odd objects/* content
2019-07-11dir-iterator: add tests for dir-iterator APILibravatar Daniel Ferreira1-0/+1
Create t/helper/test-dir-iterator.c, which prints relevant information about a directory tree iterated over with dir-iterator. Create t/t0066-dir-iterator.sh, which tests that dir-iterator does iterate through a whole directory tree as expected. Signed-off-by: Daniel Ferreira <bnmvco@gmail.com> [matheus.bernardino: update to use test-tool and some minor aesthetics] Helped-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-06-17t/helper: add test-oidmap.cLibravatar Christian Couder1-0/+1
This new helper is very similar to "test-hashmap.c" and will help test how `struct oidmap` from oidmap.{c,h} can be used. Helped-by: SZEDER Gábor <szeder.dev@gmail.com> Helped-by: Jeff King <peff@peff.net> Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-05-09Merge branch 'js/misc-doc-fixes'Libravatar Junio C Hamano1-0/+20
"make check-docs", "git help -a", etc. did not account for cases where a particular build may deliberately omit some subcommands, which has been corrected. * js/misc-doc-fixes: Turn `git serve` into a test helper test-tool: handle the `-C <directory>` option just like `git` check-docs: do not bother checking for legacy scripts' documentation docs: exclude documentation for commands that have been excluded check-docs: allow command-list.txt to contain excluded commands help -a: do not list commands that are excluded from the build Makefile: drop the NO_INSTALL variable remote-testgit: move it into the support directory for t5801
2019-04-19Turn `git serve` into a test helperLibravatar Johannes Schindelin1-0/+1
The `git serve` built-in was introduced in ed10cb952d31 (serve: introduce git-serve, 2018-03-15) as a backend to serve Git protocol v2, probably originally intended to be spawned by `git upload-pack`. However, in the version that the protocol v2 patches made it into core Git, `git upload-pack` calls the `serve()` function directly instead of spawning `git serve`; The only reason in life for `git serve` to survive as a built-in command is to provide a way to test the protocol v2 functionality. Meaning that it does not even have to be a built-in that is installed with end-user facing Git installations, but it can be a test helper instead. Let's make it so. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-19test-tool: handle the `-C <directory>` option just like `git`Libravatar Johannes Schindelin1-0/+19
In preparation for moving `git serve` into `test-tool` (because it really is only used by the test suite), we teach the `test-tool` the useful trick to change the working directory before running the test command, which will avoid introducing subshells in the test code. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-22trace2: t/helper/test-trace2, t0210.sh, t0211.sh, t0212.shLibravatar Jeff Hostetler1-0/+1
Create unit tests for Trace2. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-22trace2: create new combined trace facilityLibravatar Jeff Hostetler1-0/+3
Create a new unified tracing facility for git. The eventual intent is to replace the current trace_printf* and trace_performance* routines with a unified set of git_trace2* routines. In addition to the usual printf-style API, trace2 provides higer-level event verbs with fixed-fields allowing structured data to be written. This makes post-processing and analysis easier for external tools. Trace2 defines 3 output targets. These are set using the environment variables "GIT_TR2", "GIT_TR2_PERF", and "GIT_TR2_EVENT". These may be set to "1" or to an absolute pathname (just like the current GIT_TRACE). * GIT_TR2 is intended to be a replacement for GIT_TRACE and logs command summary data. * GIT_TR2_PERF is intended as a replacement for GIT_TRACE_PERFORMANCE. It extends the output with columns for the command process, thread, repo, absolute and relative elapsed times. It reports events for child process start/stop, thread start/stop, and per-thread function nesting. * GIT_TR2_EVENT is a new structured format. It writes event data as a series of JSON records. Calls to trace2 functions log to any of the 3 output targets enabled without the need to call different trace_printf* or trace_performance* routines. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-19tests: teach the test-tool to generate NUL bytes and use itLibravatar Johannes Schindelin1-0/+1
In cc95bc2025 (t5562: replace /dev/zero with a pipe from generate_zero_bytes, 2019-02-09), we replaced usage of /dev/zero (which is not available on NonStop, apparently) by a Perl script snippet to generate NUL bytes. Sadly, it does not seem to work on NonStop, as t5562 reportedly hangs. Worse, this also hangs in the Ubuntu 16.04 agents of the CI builds on Azure Pipelines: for some reason, the Perl script snippet that is run via `generate_zero_bytes` in t5562's 'CONTENT_LENGTH overflow ssite_t' test case tries to write out an infinite amount of NUL bytes unless a broken pipe is encountered, that snippet never encounters the broken pipe, and keeps going until the build times out. Oddly enough, this does not reproduce on the Windows and macOS agents, nor in a local Ubuntu 18.04. This developer tried for a day to figure out the exact circumstances under which this hang happens, to no avail, the details remain a mystery. In the end, though, what counts is that this here change incidentally fixes that hang (maybe also on NonStop?). Even more positively, it gets rid of yet another unnecessary Perl invocation. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-02-06Merge branch 'js/vsts-ci'Libravatar Junio C Hamano1-0/+1
Prepare to run test suite on Azure Pipeline. * js/vsts-ci: (22 commits) test-date: drop unused parameter to getnanos() ci: parallelize testing on Windows ci: speed up Windows phase tests: optionally skip bin-wrappers/ t0061: workaround issues with --with-dashes and RUNTIME_PREFIX tests: add t/helper/ to the PATH with --with-dashes mingw: try to work around issues with the test cleanup tests: include detailed trace logs with --write-junit-xml upon failure tests: avoid calling Perl just to determine file sizes README: add a build badge (status of the Azure Pipelines build) mingw: be more generous when wrapping up the setitimer() emulation ci: use git-sdk-64-minimal build artifact ci: add a Windows job to the Azure Pipelines definition Add a build definition for Azure DevOps ci/lib.sh: add support for Azure Pipelines tests: optionally write results as JUnit-style .xml test-date: add a subcommand to measure times in shell scripts ci: use a junction on Windows instead of a symlink ci: inherit --jobs via MAKEFLAGS in run-build-and-tests ci/lib.sh: encapsulate Travis-specific things ...
2019-01-29Merge branch 'bc/sha-256'Libravatar Junio C Hamano1-0/+2
Add sha-256 hash and plug it through the code to allow building Git with the "NewHash". * bc/sha-256: hash: add an SHA-256 implementation using OpenSSL sha256: add an SHA-256 implementation using libgcrypt Add a base implementation of SHA-256 support commit-graph: convert to using the_hash_algo t/helper: add a test helper to compute hash speed sha1-file: add a constant for hash block size t: make the sha1 test-tool helper generic t: add basic tests for our SHA-1 implementation cache: make hashcmp and hasheq work with larger hashes hex: introduce functions to print arbitrary hashes sha1-file: provide functions to look up hash algorithms sha1-file: rename algorithm to "sha1"
2019-01-29tests: optionally write results as JUnit-style .xmlLibravatar Johannes Schindelin1-0/+1
This will come in handy when publishing the results of Git's test suite during an automated Azure DevOps run. Note: we need to make extra sure that invalid UTF-8 encoding is turned into valid UTF-8 (using the Replacement Character, \uFFFD) because t9902's trace contains such invalid byte sequences, and the task in the Azure Pipeline that uploads the test results would refuse to do anything if it was asked to parse an .xml file with invalid UTF-8 in it. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-14Add a base implementation of SHA-256 supportLibravatar brian m. carlson1-0/+1
SHA-1 is weak and we need to transition to a new hash function. For some time, we have referred to this new function as NewHash. Recently, we decided to pick SHA-256 as NewHash. The reasons behind the choice of SHA-256 are outlined in the thread starting at [1] and in the commit history for the hash function transition document. Add a basic implementation of SHA-256 based off libtomcrypt, which is in the public domain. Optimize it and restructure it to meet our coding standards. Pull in the update and final functions from the SHA-1 block implementation, as we know these function correctly with all compilers. This implementation is slower than SHA-1, but more performant implementations will be introduced in future commits. Wire up SHA-256 in the list of hash algorithms, and add a test that the algorithm works correctly. Note that with this patch, it is still not possible to switch to using SHA-256 in Git. Additional patches are needed to prepare the code to handle a larger hash algorithm and further test fixes are needed. [1] https://public-inbox.org/git/20180609224913.GC38834@genre.crustytoothpaste.net/ Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-14t/helper: add a test helper to compute hash speedLibravatar brian m. carlson1-0/+1
Add a utility (which is less for the testsuite and more for developers) that can compute hash speeds for whatever hash algorithms are implemented. This allows developers to test their personal systems to determine the performance characteristics of various algorithms. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-13Merge branch 'ao/submodule-wo-gitmodules-checked-out'Libravatar Junio C Hamano1-0/+1
The submodule support has been updated to read from the blob at HEAD:.gitmodules when the .gitmodules file is missing from the working tree. * ao/submodule-wo-gitmodules-checked-out: t/helper: add test-submodule-nested-repo-config submodule: support reading .gitmodules when it's not in the working tree submodule: add a helper to check if it is safe to write to .gitmodules t7506: clean up .gitmodules properly before setting up new scenario submodule: use the 'submodule--helper config' command submodule--helper: add a new 'config' subcommand t7411: be nicer to future tests and really clean things up t7411: merge tests 5 and 6 submodule: factor out a config_set_in_gitmodules_file_gently function submodule: add a print_config_from_gitmodules() helper
2018-10-31t/helper: add test-submodule-nested-repo-configLibravatar Antonio Ospite1-0/+1
Add a test tool to exercise config_from_gitmodules(), in particular for the case of nested submodules. Add also a test to document that reading the submoudles config of nested submodules does not work yet when the .gitmodules file is not in the working tree but it still in the index. This is because the git API does not always make it possible access the object store of an arbitrary repository (see get_oid() usage in config_from_gitmodules()). When this git limitation gets fixed the aforementioned use case will be supported too. Signed-off-by: Antonio Ospite <ao2@ao2.it> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-18test-tool: show tool list on errorLibravatar Jeff King1-2/+13
Before we switched to one big test-tool binary, if you forgot the name of a tool, you could use tab-completion in the shell to get a hint. But these days, all you get is: $ t/helper/test-tool approxidate fatal: There is no test named 'approxidate' and you're stuck reading the source code to find it. Let's print a list of the available tools in this case. Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-10Merge branch 'nd/test-tool'Libravatar Junio C Hamano1-1/+5
Test helper binaries clean-up. * nd/test-tool: Makefile: add a hint about TEST_BUILTINS_OBJS t/helper: merge test-dump-fsmonitor into test-tool t/helper: merge test-parse-options into test-tool t/helper: merge test-pkt-line into test-tool t/helper: merge test-dump-untracked-cache into test-tool t/helper: keep test-tool command list sorted
2018-09-24Merge branch 'js/mingw-o-append'Libravatar Junio C Hamano1-0/+3
Further fix for O_APPEND emulation on Windows * js/mingw-o-append: mingw: fix mingw_open_append to work with named pipes t0051: test GIT_TRACE to a windows named pipe
2018-09-17Merge branch 'ds/reachable'Libravatar Junio C Hamano1-0/+1
The code for computing history reachability has been shuffled, obtained a bunch of new tests to cover them, and then being improved. * ds/reachable: commit-reach: correct accidental #include of C file commit-reach: use can_all_from_reach commit-reach: make can_all_from_reach... linear commit-reach: replace ref_newer logic test-reach: test commit_contains test-reach: test can_all_from_reach_with_flags test-reach: test reduce_heads test-reach: test get_merge_bases_many test-reach: test is_descendant_of test-reach: test in_merge_bases test-reach: create new test tool for ref_newer commit-reach: move can_all_from_reach_with_flags upload-pack: generalize commit date cutoff upload-pack: refactor ok_to_give_up() upload-pack: make reachable() more generic commit-reach: move commit_contains from ref-filter commit-reach: move ref_newer from remote.c commit.h: remove method declarations commit-reach: move walk methods from commit.c
2018-09-11t0051: test GIT_TRACE to a windows named pipeLibravatar Jeff Hostetler1-0/+3
Create a test-tool helper to create the server side of a windows named pipe, wait for a client connection, and copy data written to the pipe to stdout. Create t0051 test to route GIT_TRACE output of a command to a named pipe using the above test-tool helper. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-11t/helper: merge test-dump-fsmonitor into test-toolLibravatar Nguyễn Thái Ngọc Duy1-0/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-11t/helper: merge test-parse-options into test-toolLibravatar Nguyễn Thái Ngọc Duy1-0/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-11t/helper: merge test-pkt-line into test-toolLibravatar Nguyễn Thái Ngọc Duy1-0/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-11t/helper: merge test-dump-untracked-cache into test-toolLibravatar Nguyễn Thái Ngọc Duy1-0/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-11t/helper: keep test-tool command list sortedLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-20Sync 'ds/multi-pack-index' to v2.19.0-rc0Libravatar Junio C Hamano1-0/+1
* ds/multi-pack-index: (23 commits) midx: clear midx on repack packfile: skip loading index if in multi-pack-index midx: prevent duplicate packfile loads midx: use midx in approximate_object_count midx: use existing midx when writing new one midx: use midx in abbreviation calculations midx: read objects from multi-pack-index config: create core.multiPackIndex setting midx: write object offsets midx: write object id fanout chunk midx: write object ids in a chunk midx: sort and deduplicate objects from packfiles midx: read pack names into array multi-pack-index: write pack names in chunk multi-pack-index: read packfile list packfile: generalize pack directory list t5319: expand test data multi-pack-index: load into memory midx: write header information to lockfile multi-pack-index: add 'write' verb ...
2018-08-15Merge branch 'jh/json-writer'Libravatar Junio C Hamano1-0/+1
Preparatory code to later add json output for telemetry data. * jh/json-writer: json_writer: new routines to create JSON data
2018-07-20test-reach: create new test tool for ref_newerLibravatar Derrick Stolee1-0/+1
As we prepare to change the behavior of the algorithms in commit-reach.c, create a new test-tool subcommand 'reach' to test these methods on interesting commit-graph shapes. To use the new test-tool, use 'test-tool reach <method>' and provide input to stdin that describes the inputs to the method. Currently, we only implement the ref_newer method, which requires two commits. Use lines "A:<committish>" and "B:<committish>" for the two inputs. We will expand this input later to accommodate methods that take lists of commits. The test t6600-test-reach.sh creates a repo whose commits form a two-dimensional grid. This grid makes it easy for us to determine reachability because commit-A-B can reach commit-X-Y if and only if A is at least X and B is at least Y. This helps create interesting test cases for each result of the methods in commit-reach.c. We test all methods in three different states of the commit-graph file: Non-existent (no generation numbers), fully computed, and mixed (some commits have generation numbers and others do not). Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-20multi-pack-index: load into memoryLibravatar Derrick Stolee1-0/+1
Create a new multi_pack_index struct for loading multi-pack-indexes into memory. Create a test-tool builtin for reading basic information about that multi-pack-index to verify the correct data is written. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-17commit-graph: add repo arg to graph readersLibravatar Jonathan Tan1-0/+1
Add a struct repository argument to the functions in commit-graph.h that read the commit graph. (This commit does not affect functions that write commit graphs.) Because the commit graph functions can now read the commit graph of any repository, the global variable core_commit_graph has been removed. Instead, the config option core.commitGraph is now read on the first time in a repository that a commit is attempted to be parsed using its commit graph. This commit includes a test that exercises the functionality on an arbitrary repository that is not the_repository. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-16json_writer: new routines to create JSON dataLibravatar Jeff Hostetler1-0/+1
Add "struct json_writer" and a series of jw_ routines to compose JSON data into a string buffer. The resulting string may then be printed by commands wanting to support a JSON-like output format. The json_writer is limited to correctly formatting structured data for output. It does not attempt to build an object model of the JSON data. We say "JSON-like" because we do not enforce the Unicode (usually UTF-8) requirement on string fields. Internally, Git does not necessarily have Unicode/UTF-8 data for most fields, so it is currently unclear the best way to enforce that requirement. For example, on Linux pathnames can contain arbitrary 8-bit character data, so a command like "status" would not know how to encode the reported pathnames. We may want to revisit this (or double encode such strings) in the future. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Helped-by: René Scharfe <l.s.r@web.de> Helped-by: Wink Saville <wink@saville.com> Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-10BUG_exit_code: fix sparse "symbol not declared" warningLibravatar Ramsay Jones1-1/+0
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>