Mercurial > hg
view tests/test-filebranch.t @ 30350:358cda0af6ee
util: create new abstraction for compression engines
Currently, util.py has "compressors" and "decompressors" dicts
mapping compression algorithms to callables returning objects that
perform well-defined operations. In addition, revlog.py has code
for calling into a compressor or decompressor explicitly. And, there
is code in the wire protocol for performing zlib compression.
The 3rd party lz4revlog extension has demonstrated the utility of
supporting alternative compression formats for revlog storage. But
it stops short of supporting lz4 for bundles and the wire protocol.
There are also plans to support zstd as a general compression
replacement.
So, there appears to be a market for a unified API for registering
compression engines. This commit starts the process of establishing
one.
This commit establishes a base class/interface for defining
compression engines and how they will be used. A collection class
to hold references to registered compression engines has also been
introduced.
The built-in zlib, bz2, truncated bz2, and no-op compression engines
are registered with a singleton instance of the collection class.
The compression engine API will change once consumers are ported
to the new API and some common patterns can be simplified at the
engine API level. So don't get too attached to the API...
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 07 Nov 2016 18:31:39 -0800 |
parents | 7e9cbb9c6053 |
children | 2428e8ec0793 |
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This test makes sure that we don't mark a file as merged with its ancestor when we do a merge. $ cat <<EOF > merge > import sys, os > print "merging for", os.path.basename(sys.argv[1]) > EOF $ HGMERGE="python ../merge"; export HGMERGE Creating base: $ hg init a $ cd a $ echo 1 > foo $ echo 1 > bar $ echo 1 > baz $ echo 1 > quux $ hg add foo bar baz quux $ hg commit -m "base" $ cd .. $ hg clone a b updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved Creating branch a: $ cd a $ echo 2a > foo $ echo 2a > bar $ hg commit -m "branch a" Creating branch b: $ cd .. $ cd b $ echo 2b > foo $ echo 2b > baz $ hg commit -m "branch b" We shouldn't have anything but n state here: $ hg debugstate --nodates | grep -v "^n" [1] Merging: $ hg pull ../a pulling from ../a searching for changes adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg merge -v resolving manifests getting bar merging foo merging for foo 1 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ echo 2m > foo $ echo 2b > baz $ echo new > quux $ hg ci -m "merge" main: we should have a merge here: $ hg debugindex --changelog rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 73 ..... 0 cdca01651b96 000000000000 000000000000 (re) 1 73 68 ..... 1 f6718a9cb7f3 cdca01651b96 000000000000 (re) 2 141 68 ..... 2 bdd988058d16 cdca01651b96 000000000000 (re) 3 209 66 ..... 3 d8a521142a3c f6718a9cb7f3 bdd988058d16 (re) log should show foo and quux changed: $ hg log -v -r tip changeset: 3:d8a521142a3c tag: tip parent: 1:f6718a9cb7f3 parent: 2:bdd988058d16 user: test date: Thu Jan 01 00:00:00 1970 +0000 files: foo quux description: merge foo: we should have a merge here: $ hg debugindex foo rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re) 1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re) 2 7 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re) 3 11 4 ..... 3 aa27919ee430 2ffeddde1b65 33d1fb69067a (re) bar: we should not have a merge here: $ hg debugindex bar rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re) 1 3 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re) baz: we should not have a merge here: $ hg debugindex baz rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re) 1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re) quux: we should not have a merge here: $ hg debugindex quux rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re) 1 3 5 ..... 3 6128c0f33108 b8e02f643373 000000000000 (re) Manifest entries should match tips of all files: $ hg manifest --debug 33d1fb69067a0139622a3fa3b7ba1cdb1367972e 644 bar 2ffeddde1b65b4827f6746174a145474129fa2ce 644 baz aa27919ee4303cfd575e1fb932dd64d75aa08be4 644 foo 6128c0f33108e8cfbb4e0824d13ae48b466d7280 644 quux Everything should be clean now: $ hg status $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 4 files, 4 changesets, 10 total revisions $ cd ..