Pull request #1499 added a new test, which uses 'head -c'. The '-c'
option is non-portable (not in POSIX). Instead use 'dd'. Similar issue
has been resolved in the past (#1321).
fseek() doesn't indicate when it moves past the end of a file.
Consequently, if a file is truncated within its last block, the error would't be detected.
This PR adds a test scenario that induces this situation using a small compressed file of only one block in size.
This test is added to tests/playTests.sh
Check is implemented by ensuring that the filehandle position is equal to the filesize upon exit.
On Windows, the equivalent of `/dev/null` is `NUL`.
When tests are run under msys2/minGW,
the environment identifies itself as Windows,
hence the script uses `NUL` instead of `/dev/null`
but the environment will consider `NUL` to be a regular file name.
Consequently, `NUL` will be overwritten during tests,
triggering an error.
This patch uses flag `-f` to force such overwrite
passing the test.
Compare the input and output files by their inode number and
refuse to open the output file if the input file is the same.
This doesn't work when (de)compressing multiple files to a single
file, but that is a very uncommon use case, mostly used for
benchmarking by me.
Fixes#1422.
The `--no-progress` flag disables zstd's progress bars, but leaves
the summary.
I've added simple tests to `playTests.sh` to make sure the parsing
works.
Sometimes, it's necessary to test that a certain command fail, as expected.
Such failure is actually a success, and must not stop the flow of tests.
Several tests were prefixed with `!` to invert return code.
This does not work : it effectively makes the tests pass no matter what.
Use instead function die(), which is meant to trap successes, and transform them into errors.
tests/playTests.sh uses 'head -c' in a couple of tests to truncate the
last byte of a file. The '-c' option is non-portable (not in POSIX).
Instead use a wrapper around dd (truncateLastByte).
* Minor fix
* Run non-optimize FASTCOVER 5 times in benchmark
* Merge fastCover into dictBuilder
* Fix mixed declaration issue
* Add fastcover to symbol.c
* Add fastCover.c and cover.h to build
* Change fastCover.c to fastcover.c
* Update benchmark to run FASTCOVER in dictBuilder
* Undo spliting fastcover_param into cover_param and f
* Remove convert param functions
* Assign f to parameter
* Add zdict.h to Makefile in lib
* Add cover.h to BUCK
* Cast 1 to U64 before shifting
* Remove trimming of zero freq head and tail in selectSegment and rebenchmark
* Remove f as a separate parameter of tryParam
* Read 8 bytes when d is 6
* Add trimming off zero frequency head and tail
* Use best functions from COVER and remove trimming part(which leads to worse compression ratio after previous bugs were fixed)
* Add finalize= argument to FASTCOVER to specify percentage of training samples passed to ZDICT_finalizeDictionary
* Change nbDmer to always read 8 bytes even when d=6
* Add skip=# argument to allow skipping dmers in computeFrequency in FASTCOVER
* Update comments and benchmarking result
* Change default method of ZDICT_trainFromBuffer to ZDICT_optimizeTrainFromBuffer_fastCover
* Add dictType enum and fix bug about passing zParam when converting to coverParam
* Combine finalize and skip into a single parameter
* Update acceleration parameters and benchmark on 3 sample sets
* Change default splitPoint of FASTCOVER to 0.75 and benchmark first 3 sample sets
* Initialize variables outside of for loop in benchmark.c
* Update benchmark result for hg-manifest
* Remove cover.h from install-includes
* Add explanation of f
* Set default compression level for trainFromBuffer to 3
* Add assertion of fastCoverParams in DiB_trainFromFiles
* Add checkTotalCompressedSize function + some minor fixes
* Add test for multithreading fastCovr
* Initialize segmentFreqs in every FASTCOVER_selectSegment and move mutex_unnlock to end of COVER_best_finish
* Free segmentFreqs
* Initialize segmentFreqs before calling FASTCOVER_buildDictionary instead of in FASTCOVER_selectSegment
* Add FASTCOVER_MEMMULT
* Minor fix
* Update benchmarking result
OpenBSD's port building infrastructure is able to build in a privilege
separated mode. It uses a privilege drop model. Regression tests fail in
this mode as xz/lzma is unable to set file group and errors out with:
xz: tmp.xz: Cannot set the file group: Operation not permitted
gmake[1]: *** [Makefile:307: zstd-playTests] Error 2
Actually it is not a xz/lzma error but a warning causing zstd's
regression test to fail. Proposed fix is to have xz/lzma not set the
exit status to 2 even if a condition worth a warning was detected (-Q
flag).
https://github.com/facebook/zstd/pull/1124 fixes an issue with GNU/Hurd
being unable to write to /dev/zero. Implemented fix is writing to
/dev/random instead.
On OpenBSD a regular user is unable to write to /dev/random because of
permissions set on this device. Result is failing a regression test.
Proposed solution should work for all platforms.
