mercurial: comparison tests/test-tags.t

equal deleted inserted replaced

-:fb6cb1b82f4f
+:07200e3332a1
 $ cacheexists() {
 >   [ -f .hg/cache/tags ] && echo "tag cache exists" || echo "no tag cache"
 > }
+$ fnodescacheexists() {
+>   [ -f .hg/cache/hgtagsfnodes1 ] && echo "fnodes cache exists" || echo "no fnodes cache"
+> }
 $ dumptags() {
 >     rev=$1
 >     echo "rev $rev: .hgtags:"
 >     hg cat -r$rev .hgtags
 > }
 $ hg init t
 $ cd t
 $ cacheexists
 no tag cache
+$ fnodescacheexists
+no fnodes cache
 $ hg id
 000000000000 tip
 $ cacheexists
 no tag cache
+$ fnodescacheexists
+no fnodes cache
 $ echo a > a
 $ hg add a
 $ hg commit -m "test"
 $ hg co
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 $ hg identify
 acb14030fe0a tip
 $ cacheexists
 tag cache exists
+No fnodes cache because .hgtags file doesn't exist
+(this is an implementation detail)
+$ fnodescacheexists
+no fnodes cache
 Try corrupting the cache
 $ printf 'a b' > .hg/cache/tags
 $ hg identify
 acb14030fe0a tip
 $ cacheexists
 tag cache exists
+$ fnodescacheexists
+no fnodes cache
 $ hg identify
 acb14030fe0a tip
 Create local tag with long name:
 tip                                1:b9154636be93
 first                              0:acb14030fe0a
 $ hg identify
 b9154636be93 tip
+We should have a fnodes cache now that we have a real tag
+The cache should have an empty entry for rev 0 and a valid entry for rev 1.
+$ fnodescacheexists
+fnodes cache exists
+$ f --size --hexdump .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=48
+0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
+0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...|
+0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y|
 Repeat with cold tag cache:
-$ rm -f .hg/cache/tags
+$ rm -f .hg/cache/tags .hg/cache/hgtagsfnodes1
 $ hg identify
 b9154636be93 tip
+$ fnodescacheexists
+fnodes cache exists
+$ f --size --hexdump .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=48
+0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
+0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...|
+0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y|
 And again, but now unable to write tag cache:
 #if unix-permissions
-$ rm -f .hg/cache/tags
+$ rm -f .hg/cache/tags .hg/cache/hgtagsfnodes1
-$ chmod 555 .hg
+$ chmod 555 .hg/cache
 $ hg identify
 b9154636be93 tip
-$ chmod 755 .hg
+$ chmod 755 .hg/cache
 #endif
 Tag cache debug info written to blackbox log
-$ rm -f .hg/cache/tags
+$ rm -f .hg/cache/tags .hg/cache/hgtagsfnodes1
 $ hg identify
 b9154636be93 tip
-$ hg blackbox -l 4
+$ hg blackbox -l 5
 1970/01/01 00:00:00 bob> identify
-1970/01/01 00:00:00 bob> resolved 1 tags cache entries from 1 manifests in ?.???? seconds (glob)
+1970/01/01 00:00:00 bob> writing 48 bytes to cache/hgtagsfnodes1
+1970/01/01 00:00:00 bob> 0/1 cache hits/lookups in * seconds (glob)
 1970/01/01 00:00:00 bob> writing tags cache file with 1 heads and 1 tags
 1970/01/01 00:00:00 bob> identify exited 0 after ?.?? seconds (glob)
+Failure to acquire lock results in no write
+$ rm -f .hg/cache/tags .hg/cache/hgtagsfnodes1
+$ echo 'foo:1' > .hg/wlock
+$ hg identify
+b9154636be93 tip
+$ hg blackbox -l 5
+1970/01/01 00:00:00 bob> identify
+1970/01/01 00:00:00 bob> not writing .hg/cache/hgtagsfnodes1 because lock held
+1970/01/01 00:00:00 bob> 0/1 cache hits/lookups in * seconds (glob)
+1970/01/01 00:00:00 bob> writing tags cache file with 1 heads and 1 tags
+1970/01/01 00:00:00 bob> identify exited 0 after * seconds (glob)
+$ fnodescacheexists
+no fnodes cache
+$ rm .hg/wlock
+$ rm -f .hg/cache/tags .hg/cache/hgtagsfnodes1
+$ hg identify
+b9154636be93 tip
 Create a branch:
 $ echo bb > a
 $ hg status
 M a
 $ echo 1 > b
 $ hg add b
 $ hg commit -m "branch"
 created new head
+Creating a new commit shouldn't append the .hgtags fnodes cache until
+tags info is accessed
+$ f --size --hexdump .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=48
+0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
+0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...|
+0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y|
 $ hg id
 c8edf04160c7 tip
+First 4 bytes of record 3 are changeset fragment
+$ f --size --hexdump .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=72
+0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
+0010: ff ff ff ff ff ff ff ff b9 15 46 36 26 b7 b4 a7 |..........F6&...|
+0020: 73 e0 9e e3 c5 2f 51 0e 19 e0 5e 1f f9 66 d8 59 |s..../Q...^..f.Y|
+0030: c8 ed f0 41 00 00 00 00 00 00 00 00 00 00 00 00 |...A............|
+0040: 00 00 00 00 00 00 00 00                         |........|
 Merge the two heads:
 $ hg merge 1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 2 7a94127795a33c10a370c93f731fd9fea0b79af6 0c04f2a8af31de17fab7422878ee5a2dadbc943d
 bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar
 bbd179dfa0a71671c253b3ae0aa1513b60d199fa bar
 78391a272241d70354aa14c874552cad6b51bb42 bar
+$ f --size --hexdump .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=120
+0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
+0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
+0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
+0030: 7a 94 12 77 0c 04 f2 a8 af 31 de 17 fa b7 42 28 |z..w.....1....B(|
+0040: 78 ee 5a 2d ad bc 94 3d 6f a4 50 21 7d 3b 71 8c |x.Z-...=o.P!};q.|
+0050: 96 4e f3 7b 89 e5 50 eb da fd 57 89 e7 6c e1 b0 |.N.{..P...W..l..|
+0060: 0c 19 2d 7d 0c 04 f2 a8 af 31 de 17 fa b7 42 28 |..-}.....1....B(|
+0070: 78 ee 5a 2d ad bc 94 3d                         |x.Z-...=|
+Corrupt the .hgtags fnodes cache
+Extra junk data at the end should get overwritten on next cache update
+$ echo extra >> .hg/cache/hgtagsfnodes1
+$ echo dummy1 > foo
+$ hg commit -m throwaway1
+$ hg tags
+tip                                5:8dbfe60eff30
+bar                                1:78391a272241
+$ hg blackbox -l 5
+1970/01/01 00:00:00 bob> tags
+1970/01/01 00:00:00 bob> writing 24 bytes to cache/hgtagsfnodes1
+1970/01/01 00:00:00 bob> 0/1 cache hits/lookups in * seconds (glob)
+1970/01/01 00:00:00 bob> writing tags cache file with 3 heads and 1 tags
+1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob)
+#if unix-permissions no-root
+Errors writing to .hgtags fnodes cache are silently ignored
+$ echo dummy2 > foo
+$ hg commit -m throwaway2
+$ chmod a-w .hg/cache/hgtagsfnodes1
+$ rm -f .hg/cache/tags
+$ hg tags
+tip                                6:b968051b5cf3
+bar                                1:78391a272241
+$ hg blackbox -l 5
+1970/01/01 00:00:00 bob> tags
+1970/01/01 00:00:00 bob> couldn't write cache/hgtagsfnodes1: [Errno 13] Permission denied: '$TESTTMP/t2/.hg/cache/hgtagsfnodes1'
+1970/01/01 00:00:00 bob> 2/3 cache hits/lookups in * seconds (glob)
+1970/01/01 00:00:00 bob> writing tags cache file with 3 heads and 1 tags
+1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob)
+$ chmod a+w .hg/cache/hgtagsfnodes1
+#endif
+$ rm -f .hg/cache/tags
+$ hg tags
+tip                                6:b968051b5cf3
+bar                                1:78391a272241
+$ hg blackbox -l 5
+1970/01/01 00:00:00 bob> tags
+1970/01/01 00:00:00 bob> writing 24 bytes to cache/hgtagsfnodes1
+1970/01/01 00:00:00 bob> 2/3 cache hits/lookups in * seconds (glob)
+1970/01/01 00:00:00 bob> writing tags cache file with 3 heads and 1 tags
+1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob)
+$ f --size .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=168
+Stripping doesn't truncate the tags cache until new data is available
+$ hg -q --config extensions.strip= strip -r 5 --no-backup
+$ hg tags
+tip                                4:0c192d7d5e6b
+bar                                1:78391a272241
+$ hg blackbox -l 4
+1970/01/01 00:00:00 bob> tags
+1970/01/01 00:00:00 bob> 1/1 cache hits/lookups in * seconds (glob)
+1970/01/01 00:00:00 bob> writing tags cache file with 3 heads and 1 tags
+1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob)
+$ f --size .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=168
+$ echo dummy > foo
+$ hg commit -m throwaway3
+$ hg tags
+tip                                5:035f65efb448
+bar                                1:78391a272241
+$ hg blackbox -l 5
+1970/01/01 00:00:00 bob> tags
+1970/01/01 00:00:00 bob> writing 24 bytes to cache/hgtagsfnodes1
+1970/01/01 00:00:00 bob> 0/1 cache hits/lookups in * seconds (glob)
+1970/01/01 00:00:00 bob> writing tags cache file with 3 heads and 1 tags
+1970/01/01 00:00:00 bob> tags exited 0 after * seconds (glob)
+$ f --size .hg/cache/hgtagsfnodes1
+.hg/cache/hgtagsfnodes1: size=144
+$ hg -q --config extensions.strip= strip -r 5 --no-backup
 Test tag removal:
 $ hg tag --remove bar     # rev 5
 $ hg tip -vp

changeset 24735	07200e3332a1
parent 24706	5150b2b5b345
child 24737	b061a2049662