| Age | Commit message (Collapse) | Author |
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Leakfixes.
* ps/leakfixes-part-10: (27 commits)
t: remove TEST_PASSES_SANITIZE_LEAK annotations
test-lib: unconditionally enable leak checking
t: remove unneeded !SANITIZE_LEAK prerequisites
t: mark some tests as leak free
t5601: work around leak sanitizer issue
git-compat-util: drop now-unused `UNLEAK()` macro
global: drop `UNLEAK()` annotation
t/helper: fix leaking commit graph in "read-graph" subcommand
builtin/branch: fix leaking sorting options
builtin/init-db: fix leaking directory paths
builtin/help: fix leaks in `check_git_cmd()`
help: fix leaking return value from `help_unknown_cmd()`
help: fix leaking `struct cmdnames`
help: refactor to not use globals for reading config
builtin/sparse-checkout: fix leaking sanitized patterns
split-index: fix memory leak in `move_cache_to_base_index()`
git: refactor builtin handling to use a `struct strvec`
git: refactor alias handling to use a `struct strvec`
strvec: introduce new `strvec_splice()` function
line-log: fix leak when rewriting commit parents
...
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In 5bf96e0c39 (reftable/generic: move seeking of records into the
iterator, 2024-05-13) we have refactored the reftable codebase such that
iterators can be initialized once and then re-seeked multiple times.
This feature is used by 1869525066 (refs/reftable: wire up support for
exclude patterns, 2024-09-16) in order to skip records based on exclude
patterns provided by the caller.
The logic to re-seek the merged iterator is insufficient though because
we don't drain the priority queue on a re-seek. This means that the
queue may contain stale entries and thus reading the next record in the
queue will return the wrong entry. While this is an obvious bug, it is
harmless in the context of above exclude patterns:
- If the queue contained stale entries that match the pattern then the
caller would already know to filter out such refs. This is because
our codebase is prepared to handle backends that don't have a way to
efficiently implement exclude patterns.
- If the queue contained stale entries that don't match the pattern
we'd eventually filter out any duplicates. This is because the
reftable code discards items with the same ref name and sorts any
remaining entries properly.
So things happen to work in this context regardless of the bug, and
there is no other use case yet where we re-seek iterators. We're about
to introduce a caching mechanism though where iterators are reused by
the reftable backend, and that will expose the bug.
Fix the issue by draining the priority queue when seeking and add a
testcase that surfaces the issue.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Introduce a new `strvec_splice()` function that can replace a range of
strings in the vector with another array of strings. This function will
be used in subsequent commits.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ps/reftable-detach:
reftable/system: provide thin wrapper for lockfile subsystem
reftable/stack: drop only use of `get_locked_file_path()`
reftable/system: provide thin wrapper for tempfile subsystem
reftable/stack: stop using `fsync_component()` directly
reftable/system: stop depending on "hash.h"
reftable: explicitly handle hash format IDs
reftable/system: move "dir.h" to its only user
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We use the lockfile subsystem to write lockfiles for "tables.list". As
with the tempfile subsystem, the lockfile subsystem also hooks into our
infrastructure to prune stale locks via atexit(3p) or signal handlers.
Furthermore, the lockfile subsystem also handles locking timeouts, which
do add quite a bit of logic. Having to reimplement that in the context
of Git wouldn't make a whole lot of sense, and it is quite likely that
downstream users of the reftable library may have a better idea for how
exactly to implement timeouts.
So again, provide a thin wrapper for the lockfile subsystem instead such
that the compatibility shim is fully self-contained.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We include "hash.h" in "reftable/system.h" such that we can use hash
format IDs as well as the raw size of SHA1 and SHA256. As we are in the
process of converting the reftable library to become standalone we of
course cannot rely on those constants anymore.
Introduce a new `enum reftable_hash` to replace internal uses of the
hash format IDs and new constants that replace internal uses of the hash
size. Adapt the reftable backend to set up the correct hash function.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We still include "dir.h" in "reftable/system.h" even though it is not
used by anything but by a single unit test. Move it over into that unit
test so that we don't accidentally use any functionality provided by it
in the reftable codebase.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Convert "clar-generate.awk" into a shell script that invokes awk(1).
This allows us to avoid the shell redirect in the build system, which
may otherwise be a problem with build systems on platforms that use a
different shell.
While at it, wrap the overly long lines in the CMake build instructions.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Buildfix and upgrade of Clar to a newer version.
* ps/upgrade-clar:
cmake: set up proper dependencies for generated clar headers
cmake: fix compilation of clar-based unit tests
Makefile: extract script to generate clar declarations
Makefile: adjust sed command for generating "clar-decls.h"
t/unit-tests: update clar to 206accb
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Implements a new reftable-specific strbuf replacement to reduce
reftable's dependency on Git-specific data structures.
* ps/reftable-strbuf:
reftable: handle trivial `reftable_buf` errors
reftable/stack: adapt `stack_filename()` to handle allocation failures
reftable/record: adapt `reftable_record_key()` to handle allocation failures
reftable/stack: adapt `format_name()` to handle allocation failures
t/unit-tests: check for `reftable_buf` allocation errors
reftable/blocksource: adapt interface name
reftable: convert from `strbuf` to `reftable_buf`
reftable/basics: provide new `reftable_buf` interface
reftable: stop using `strbuf_addf()`
reftable: stop using `strbuf_addbuf()`
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Typofixes.
* ak/typofixes:
t: fix typos
t/helper: fix a typo
t/perf: fix typos
t/unit-tests: fix typos
contrib: fix typos
compat: fix typos
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Extract the script to generate function declarations for the clar unit
testing framework into a standalone script. This is done such that we
can reuse it in other build systems.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
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Update clar from:
- 1516124 (Merge pull request #97 from pks-t/pks-whitespace-fixes, 2024-08-15).
To:
- 206accb (Merge pull request #108 from pks-t/pks-uclibc-without-wchar, 2024-10-21)
This update includes a bunch of fixes and improvements that we have
discussed in Git when initial support for clar was merged:
- There is a ".editorconfig" file now.
- Compatibility with Windows has been improved so that the clar
compiles on this platform without an issue. This has been tested
with Cygwin, MinGW and Microsoft Visual Studio.
- clar now uses CMake. This does not impact us at all as we wire up
the clar into our own build infrastructure anyway. This conversion
was done such that we can easily run CI jobs against Windows.
- Allocation failures are now checked for consistently.
- We now define feature test macros in "clar.c", which fixes
compilation on some platforms that didn't previously pull in
non-standard functions like lstat(3p) or strdup(3p). This was
reported by a user of OpenSUSE Leap.
- We stop using `struct timezone`, which is undefined behaviour
nowadays and results in a compilation error on some platforms.
- We now use the combination of mktemp(3) and mkdir(3) on SunOS, same
as we do on NonStop.
- We now support uClibc without support for <wchar.h>.
The most important bits here are the improved platform compatibility
with Windows, OpenSUSE, SunOS and uClibc.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
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Adapt our unit tests to check for allocations errors.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
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Adapt the name of the `strbuf` block source to no longer relate to this
interface, but instead to the `reftable_buf` interface.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
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Convert the reftable library to use the `reftable_buf` interface instead
of the `strbuf` interface. This is mostly a mechanical change via sed(1)
with some manual fixes where functions for `strbuf` and `reftable_buf`
differ. The converted code does not yet handle allocation failures. This
will be handled in subsequent commits.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
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We're about to introduce our own `reftable_buf` type to replace
`strbuf`. One function we'll have to convert is `strbuf_addf()`, which
is used in a handful of places. This function uses `snprintf()`
internally, which makes porting it a bit more involved:
- It is not available on all platforms.
- Some platforms like Windows have broken implementations.
So by using `snprintf()` we'd also push the burden on downstream users
of the reftable library to make available a properly working version of
it.
Most callsites of `strbuf_addf()` are trivial to convert to not using
it. We do end up using `snprintf()` in our unit tests, but that isn't
much of a problem for downstream users of the reftable library.
While at it, remove a useless call to `strbuf_reset()` in
`t_reftable_stack_auto_compaction_with_locked_tables()`. We don't write
to the buffer before this and initialize it with `STRBUF_INIT`, so there
is no need to reset anything.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
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The reftable library is now prepared to expect that the memory
allocation function given to it may fail to allocate and to deal
with such an error.
* ps/reftable-alloc-failures: (26 commits)
reftable/basics: fix segfault when growing `names` array fails
reftable/basics: ban standard allocator functions
reftable: introduce `REFTABLE_FREE_AND_NULL()`
reftable: fix calls to free(3P)
reftable: handle trivial allocation failures
reftable/tree: handle allocation failures
reftable/pq: handle allocation failures when adding entries
reftable/block: handle allocation failures
reftable/blocksource: handle allocation failures
reftable/iter: handle allocation failures when creating indexed table iter
reftable/stack: handle allocation failures in auto compaction
reftable/stack: handle allocation failures in `stack_compact_range()`
reftable/stack: handle allocation failures in `reftable_new_stack()`
reftable/stack: handle allocation failures on reload
reftable/reader: handle allocation failures in `reader_init_iter()`
reftable/reader: handle allocation failures for unindexed reader
reftable/merged: handle allocation failures in `merged_table_init_iter()`
reftable/writer: handle allocation failures in `reftable_new_writer()`
reftable/writer: handle allocation failures in `writer_index_hash()`
reftable/record: handle allocation failures when decoding records
...
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Fix typos via codespell.
Signed-off-by: Andrew Kreimer <algonell@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We have several calls to `FREE_AND_NULL()` in the reftable library,
which of course uses free(3P). As the reftable allocators are pluggable
we should rather call the reftable specific function, which is
`reftable_free()`.
Introduce a new macro `REFTABLE_FREE_AND_NULL()` and adapt the callsites
accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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There are a small set of calls to free(3P) in the reftable library. As
the reftable allocators are pluggable we should rather call the reftable
specific function, which is `reftable_free()`.
Convert the code accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Handle trivial allocation failures in the reftable library and its unit
tests.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The tree interfaces of the reftable library handle both insertion and
searching of tree nodes with a single function, where the behaviour is
altered between the two via an `insert` bit. This makes it quit awkward
to handle allocation failures because on inserting we'd have to check
for `NULL` pointers and return an error, whereas on searching entries we
don't have to handle it as an allocation error.
Split up concerns of this function into two separate functions, one for
inserting entries and one for searching entries. This makes it easy for
us to check for allocation errors as `tree_insert()` should never return
a `NULL` pointer now. Adapt callers accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Handle allocation failures in `block_writer_init()` and
`block_reader_init()`. This requires us to bubble up error codes into
`writer_reinit_block_writer()`. Adapt call sites accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Handle allocation failures in `reader_init_iter()`. This requires us to
also adapt `reftable_reader_init_*_iterator()` to bubble up the new
error codes. Adapt callers accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Handle allocation failures in `merged_table_init_iter()`. While at it,
merge `merged_iter_init()` into the function. It only has a single
caller and merging them makes it easier to handle allocation failures
consistently.
This change also requires us to adapt `reftable_stack_init_*_iterator()`
to bubble up the new error codes of `merged_table_iter_init()`. Adapt
callsites accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Handle allocation failures in `reftable_new_writer()`. Adapt the
function to return an error code to return such failures. While at it,
rename it to match our code style as we have to touch up every callsite
anyway.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Handle allocation failures in `parse_names()` by returning `NULL` in
case any allocation fails. While at it, refactor the function to return
the array directly instead of assigning it to an out-pointer.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Give timeout to the locking code to write to reftable.
* ps/reftable-concurrent-writes:
refs/reftable: reload locked stack when preparing transaction
reftable/stack: allow locking of outdated stacks
refs/reftable: introduce "reftable.lockTimeout"
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The reftable backend learned to more efficiently handle exclude
patterns while enumerating the refs.
* ps/reftable-exclude:
refs/reftable: wire up support for exclude patterns
reftable/reader: make table iterator reseekable
t/unit-tests: introduce reftable library
Makefile: stop listing test library objects twice
builtin/receive-pack: fix exclude patterns when announcing refs
refs: properly apply exclude patterns to namespaced refs
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In `reftable_stack_new_addition()` we first lock the stack and then
check whether it is still up-to-date. If it is not we return an error to
the caller indicating that the stack is outdated.
This is overly restrictive in our ref transaction interface though: we
lock the stack right before we start to verify the transaction, so we do
not really care whether it is outdated or not. What we really want is
that the stack is up-to-date after it has been locked so that we can
verify queued updates against its current state while we know that it is
locked for concurrent modification.
Introduce a new flag `REFTABLE_STACK_NEW_ADDITION_RELOAD` that alters
the behaviour of `reftable_stack_init_addition()` in this case: when we
notice that it is out-of-date we reload it instead of returning an error
to the caller.
This logic will be wired up in the reftable backend in the next commit.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Import clar unit tests framework libgit2 folks invented for our
use.
* ps/clar-unit-test:
Makefile: rename clar-related variables to avoid confusion
clar: add CMake support
t/unit-tests: convert ctype tests to use clar
t/unit-tests: convert strvec tests to use clar
t/unit-tests: implement test driver
Makefile: wire up the clar unit testing framework
Makefile: do not use sparse on third-party sources
Makefile: make hdr-check depend on generated headers
Makefile: fix sparse dependency on GENERATED_H
clar: stop including `shellapi.h` unnecessarily
clar(win32): avoid compile error due to unused `fs_copy()`
clar: avoid compile error with mingw-w64
t/clar: fix compatibility with NonStop
t: import the clar unit testing framework
t: do not pass GIT_TEST_OPTS to unit tests with prove
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Another reftable test migrated to the unit-test framework.
* cp/unit-test-reftable-stack:
t-reftable-stack: add test for stack iterators
t-reftable-stack: add test for non-default compaction factor
t-reftable-stack: use reftable_ref_record_equal() to compare ref records
t-reftable-stack: use Git's tempfile API instead of mkstemp()
t: harmonize t-reftable-stack.c with coding guidelines
t: move reftable/stack_test.c to the unit testing framework
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* ps/reftable-exclude:
refs/reftable: wire up support for exclude patterns
reftable/reader: make table iterator reseekable
t/unit-tests: introduce reftable library
Makefile: stop listing test library objects twice
builtin/receive-pack: fix exclude patterns when announcing refs
refs: properly apply exclude patterns to namespaced refs
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* cp/unit-test-reftable-stack:
t-reftable-stack: add test for stack iterators
t-reftable-stack: add test for non-default compaction factor
t-reftable-stack: use reftable_ref_record_equal() to compare ref records
t-reftable-stack: use Git's tempfile API instead of mkstemp()
t: harmonize t-reftable-stack.c with coding guidelines
t: move reftable/stack_test.c to the unit testing framework
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In 67ce50ba26 (Merge branch 'ps/reftable-reusable-iterator', 2024-05-30)
we have refactored the interface of reftable iterators such that they
can be reused in theory. This patch series only landed the required
changes on the interface level, but didn't yet implement the actual
logic to make iterators reusable.
As it turns out almost all of the infrastructure already does support
re-seeking. The only exception is the table iterator, which does not
reset its `is_finished` bit. Do so and add a couple of tests that verify
that we can re-seek iterators.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We have recently migrated all of the reftable unit tests that were part
of the reftable library into our own unit testing framework. As part of
that migration we have duplicated some of the functionality that was
part of the reftable test framework into each of the migrated test
suites. This was a sensible decision to not have all of the migrations
dependent on each other, but now that the migration is done it makes
sense to deduplicate the functionality again.
Introduce a new reftable test library that hosts some shared code and
adapt tests to use it.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Another unit-test.
* gt/unit-test-oid-array:
t: port helper/test-oid-array.c to unit-tests/t-oid-array.c
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* cp/unit-test-reftable-stack:
t-reftable-stack: add test for stack iterators
t-reftable-stack: add test for non-default compaction factor
t-reftable-stack: use reftable_ref_record_equal() to compare ref records
t-reftable-stack: use Git's tempfile API instead of mkstemp()
t: harmonize t-reftable-stack.c with coding guidelines
t: move reftable/stack_test.c to the unit testing framework
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reftable_stack_init_ref_iterator and reftable_stack_init_log_iterator
as defined by reftable/stack.{c,h} initialize a stack iterator to
iterate over the ref and log records in a reftable stack respectively.
Since these functions are not exercised by any of the existing tests,
add a test for them.
Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In a recent codebase update (commit ae8e378430, merge branch
'ps/reftable-write-options', 2024/05/13) the geometric factor used
in auto-compaction of reftable tables was made configurable. Add
a test to verify the functionality introduced by this update.
Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In the current stack tests, ref records are compared for equality
by sometimes using the dedicated function for ref-record comparison,
reftable_ref_record_equal(), and sometimes by explicity comparing
contents of the ref records.
The latter method is undesired because there can exist unequal ref
records with some of the contents being equal. Replace the latter
instances of ref-record comparison with the former. This has the
added benefit of preserving uniformity throughout the test file.
Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Git's tempfile API defined by $GIT_DIR/tempfile.{c,h} provides
a unified interface for tempfile operations. Since reftable/stack.c
uses this API for all its tempfile needs instead of raw functions
like mkstemp(), make the ported stack test strictly use Git's
tempfile API as well.
A bigger benefit is the fact that we know to clean up the tempfile
in case the test fails because it gets registered and pruned via a
signal handler.
Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Harmonize the newly ported test unit-tests/t-reftable-stack.c
with the following guidelines:
- Single line 'for' statements must omit curly braces.
- Structs must be 0-initialized with '= { 0 }' instead of '= { NULL }'.
- Array sizes and indices should preferably be of type 'size_t' and
not 'int'.
- Function pointers should be passed as 'func' and not '&func'.
While at it, remove initialization for those variables that are
re-used multiple times, like loop variables.
Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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reftable/stack_test.c exercises the functions defined in
reftable/stack.{c, h}. Migrate reftable/stack_test.c to the
unit testing framework. Migration involves refactoring the tests
to use the unit testing framework instead of reftable's test
framework and renaming the tests to be in-line with unit-tests'
standards.
Since some of the tests use set_test_hash() defined by
reftable/test_framework.{c, h} but these files are not
'#included' in the test file, copy this function in the
ported test file.
With the migration of stack test to the unit-tests framework,
"test-tool reftable" becomes a no-op. Hence, get rid of everything
that uses "test-tool reftable" alongside everything that is used
to implement it.
While at it, alphabetically sort the cmds[] list in
helper/test-tool.c by moving the entry for "dump-reftable".
Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Make our codebase compilable with the -Werror=unused-parameter
option.
* jk/unused-parameters:
CodingGuidelines: mention -Wunused-parameter and UNUSED
config.mak.dev: enable -Wunused-parameter by default
compat: mark unused parameters in win32/mingw functions
compat: disable -Wunused-parameter in win32/headless.c
compat: disable -Wunused-parameter in 3rd-party code
t-reftable-readwrite: mark unused parameter in callback function
gc: mark unused config parameter in virtual functions
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Convert the ctype tests to use the new clar unit testing framework.
Introduce a new function `cl_failf()` that allows us to print a
formatted error message, which we can use to point out which of the
characters was classified incorrectly. This results in output like this
on failure:
# start of suite 1: ctype
not ok 1 - ctype::isspace
---
reason: |
Test failed.
0x0d is classified incorrectly: expected 0, got 1
at:
file: 't/unit-tests/ctype.c'
line: 36
function: 'test_ctype__isspace'
---
ok 2 - ctype::isdigit
ok 3 - ctype::isalpha
ok 4 - ctype::isalnum
ok 5 - ctype::is_glob_special
ok 6 - ctype::is_regex_special
ok 7 - ctype::is_pathspec_magic
ok 8 - ctype::isascii
ok 9 - ctype::islower
ok 10 - ctype::isupper
ok 11 - ctype::iscntrl
ok 12 - ctype::ispunct
ok 13 - ctype::isxdigit
ok 14 - ctype::isprint
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Convert the strvec tests to use the new clar unit testing framework.
This is a first test balloon that demonstrates how the testing infra for
clar-based tests looks like.
The tests are part of the "t/unit-tests/bin/unit-tests" binary. When
running that binary with an injected error, it generates TAP output:
# ./t/unit-tests/bin/unit-tests
TAP version 13
# start of suite 1: strvec
ok 1 - strvec::init
ok 2 - strvec::dynamic_init
ok 3 - strvec::clear
not ok 4 - strvec::push
---
reason: |
String mismatch: (&vec)->v[i] != expect[i]
'foo' != 'fo' (at byte 2)
at:
file: 't/unit-tests/strvec.c'
line: 48
function: 'test_strvec__push'
---
ok 5 - strvec::pushf
ok 6 - strvec::pushl
ok 7 - strvec::pushv
ok 8 - strvec::replace_at_head
ok 9 - strvec::replace_at_tail
ok 10 - strvec::replace_in_between
ok 11 - strvec::replace_with_substring
ok 12 - strvec::remove_at_head
ok 13 - strvec::remove_at_tail
ok 14 - strvec::remove_in_between
ok 15 - strvec::pop_empty_array
ok 16 - strvec::pop_non_empty_array
ok 17 - strvec::split_empty_string
ok 18 - strvec::split_single_item
ok 19 - strvec::split_multiple_items
ok 20 - strvec::split_whitespace_only
ok 21 - strvec::split_multiple_consecutive_whitespaces
ok 22 - strvec::detach
1..22
The binary also supports some parameters that allow us to run only a
subset of unit tests or alter the output:
$ ./t/unit-tests/bin/unit-tests -h
Usage: ./t/unit-tests/bin/unit-tests [options]
Options:
-sname Run only the suite with `name` (can go to individual test name)
-iname Include the suite with `name`
-xname Exclude the suite with `name`
-v Increase verbosity (show suite names)
-q Only report tests that had an error
-Q Quit as soon as a test fails
-t Display results in tap format
-l Print suite names
-r[filename] Write summary file (to the optional filename)
Furthermore, running `make unit-tests` runs the binary along with all
the other unit tests we have.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The test driver in "unit-test.c" is responsible for setting up our unit
tests and eventually running them. As such, it is also responsible for
parsing the command line arguments.
The clar unit testing framework provides function `clar_test()` that
parses command line arguments and then executes the tests for us. In
theory that would already be sufficient. We have the special requirement
to always generate TAP-formatted output though, so we'd have to always
pass the "-t" argument to clar. Furthermore, some of the options exposed
by clar are ineffective when "-t" is used, but they would still be shown
when the user passes the "-h" parameter to have the clar show its usage.
Implement our own option handling instead of using the one provided by
clar, which gives us greater flexibility in how exactly we set things
up.
We would ideally not use any "normal" code of ours for this such that
the unit testing framework doesn't depend on it working correctly. But
it is somewhat dubious whether we really want to reimplement all of the
option parsing. So for now, let's be pragmatic and reuse it until we
find a good reason in the future why we'd really want to avoid it.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Wire up the clar unit testing framework by introducing a new
"unit-tests" executable. In contrast to the existing framework, this
will result in a single executable for all test suites. The ability to
pick specific tests to execute is retained via functionality built into
the clar itself.
Note that we need to be a bit careful about how we need to invalidate
our Makefile rules. While we obviously have to regenerate the clar suite
when our test suites change, we also have to invalidate it in case any
of the test suites gets removed. We do so by using our typical pattern
of creating a `GIT-TEST-SUITES` file that gets updated whenever the set
of test suites changes, so that we can easily depend on that file.
Another specialty is that we generate a "clar-decls.h" file. The test
functions are neither static, nor do they have external declarations.
This is because they are getting parsed via "generate.py", which then
creates the external generations that get populated into an array. These
declarations are only seen by the main function though.
The consequence is that we will get a bunch of "missing prototypes"
errors from our compiler for each of these test functions. To fix those
errors, we extract the `extern` declarations from "clar.suite" and put
them into a standalone header that then gets included by each of our
unit tests. This gets rid of compiler warnings for every function which
has been extracted by "generate.py". More importantly though, it does
_not_ get rid of warnings in case a function really isn't being used by
anything. Thus, it would cause a compiler error if a function name was
mistyped and thus not picked up by "generate.py".
The test driver "unit-test.c" is an empty stub for now. It will get
implemented in the next commit.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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