nodemap: check that a simple lookup works fine

I realised the code was not exercised much.

Differential Revision: https://phab.mercurial-scm.org/D8180

tests/test-persistent-nodemap.t

@@ -1,139 +1,146 b''
 ===================================
 Test the persistent on-disk nodemap
 ===================================
 
 
   $ hg init test-repo
   $ cd test-repo
   $ cat << EOF >> .hg/hgrc
   > [experimental]
   > exp-persistent-nodemap=yes
   > [devel]
   > persistent-nodemap=yes
   > EOF
   $ hg debugbuilddag .+5000
   $ hg debugnodemap --metadata
   uid: ???????????????? (glob)
   tip-rev: 5000
   data-length: 122880
   data-unused: 0
   $ f --size .hg/store/00changelog.n
   .hg/store/00changelog.n: size=42
+
+Simple lookup works
+
+  $ ANYNODE=`hg log --template '{node|short}\n' --rev tip`
+  $ hg log -r "$ANYNODE" --template '{rev}\n'
+  5000
+
   $ f --sha256 .hg/store/00changelog-*.nd
   .hg/store/00changelog-????????????????.nd: sha256=b961925120e1c9bc345c199b2cc442abc477029fdece37ef9d99cbe59c0558b7 (glob)
   $ hg debugnodemap --dump-new | f --sha256 --size
   size=122880, sha256=b961925120e1c9bc345c199b2cc442abc477029fdece37ef9d99cbe59c0558b7
   $ hg debugnodemap --dump-disk | f --sha256 --bytes=256 --hexdump --size
   size=122880, sha256=b961925120e1c9bc345c199b2cc442abc477029fdece37ef9d99cbe59c0558b7
   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 fa c2 ff ff ff ff |................|
   0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   0030: ff ff ff ff ff ff ed b3 ff ff ff ff ff ff ff ff |................|
   0040: ff ff ff ff ff ff ee 34 00 00 00 00 ff ff ff ff |.......4........|
   0050: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   0060: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   0070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   0080: ff ff ff ff ff ff f8 50 ff ff ff ff ff ff ff ff |.......P........|
   0090: ff ff ff ff ff ff ff ff ff ff ec c7 ff ff ff ff |................|
   00a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   00b0: ff ff ff ff ff ff fa be ff ff f2 fc ff ff ff ff |................|
   00c0: ff ff ff ff ff ff ef ea ff ff ff ff ff ff f9 17 |................|
   00d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   00e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   00f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
   $ hg debugnodemap --check
   revision in index:   5001
   revision in nodemap: 5001
 
 add a new commit
 
   $ hg up
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo foo > foo
   $ hg add foo
   $ hg ci -m 'foo'
 
 #if pure
   $ hg debugnodemap --metadata
   uid: ???????????????? (glob)
   tip-rev: 5001
   data-length: 123072
   data-unused: 192
 #else
   $ hg debugnodemap --metadata
   uid: ???????????????? (glob)
   tip-rev: 5001
   data-length: 122880
   data-unused: 0
 #endif
   $ f --size .hg/store/00changelog.n
   .hg/store/00changelog.n: size=42
 
 (The pure code use the debug code that perform incremental update, the C code reencode from scratch)
 
 #if pure
   $ f --sha256 .hg/store/00changelog-*.nd --size
   .hg/store/00changelog-????????????????.nd: size=123072, sha256=136472751566c8198ff09e306a7d2f9bd18bd32298d614752b73da4d6df23340 (glob)
 
 #else
   $ f --sha256 .hg/store/00changelog-*.nd --size
   .hg/store/00changelog-????????????????.nd: size=122880, sha256=bfafebd751c4f6d116a76a37a1dee2a251747affe7efbcc4f4842ccc746d4db9 (glob)
 
 #endif
 
   $ hg debugnodemap --check
   revision in index:   5002
   revision in nodemap: 5002
 
 Test code path without mmap
 ---------------------------
 
   $ echo bar > bar
   $ hg add bar
   $ hg ci -m 'bar' --config experimental.exp-persistent-nodemap.mmap=no
 
   $ hg debugnodemap --check --config experimental.exp-persistent-nodemap.mmap=yes
   revision in index:   5003
   revision in nodemap: 5003
   $ hg debugnodemap --check --config experimental.exp-persistent-nodemap.mmap=no
   revision in index:   5003
   revision in nodemap: 5003
 
 
 #if pure
   $ hg debugnodemap --metadata
   uid: ???????????????? (glob)
   tip-rev: 5002
   data-length: 123328
   data-unused: 384
   $ f --sha256 .hg/store/00changelog-*.nd --size
   .hg/store/00changelog-????????????????.nd: size=123328, sha256=10d26e9776b6596af0f89143a54eba8cc581e929c38242a02a7b0760698c6c70 (glob)
 
 #else
   $ hg debugnodemap --metadata
   uid: ???????????????? (glob)
   tip-rev: 5002
   data-length: 122944
   data-unused: 0
   $ f --sha256 .hg/store/00changelog-*.nd --size
   .hg/store/00changelog-????????????????.nd: size=122944, sha256=755976b22b64ab680401b45395953504e64e7fa8c31ac570f58dee21e15f9bc0 (glob)
 #endif
 
 Test force warming the cache
 
   $ rm .hg/store/00changelog.n
   $ hg debugnodemap --metadata
   $ hg debugupdatecache
 #if pure
   $ hg debugnodemap --metadata
   uid: ???????????????? (glob)
   tip-rev: 5002
   data-length: 122944
   data-unused: 0
 #else
   $ hg debugnodemap --metadata
   uid: ???????????????? (glob)
   tip-rev: 5002
   data-length: 122944
   data-unused: 0
 #endif