tests/test-fileset.t

revisionbranchcache: fall back to slow path if starting readonly (issue4531)

Transitioning to Mercurial versions with revision branch cache could be slow as
long as all operations were readonly (revset queries) and the cache would be
populated but not written back.

Instead, fall back to using the consistently slow path when readonly and the
cache doesn't exist yet. That avoids the overhead of populating the cache
without writing it back.

If not readonly, it will still populate all missing entries initially. That
avoids repeated writing of the cache file with small updates, and it also makes
sure a fully populated cache available for the readonly operations.

  $ fileset() {
  >   hg debugfileset "$@"
  > }

  $ hg init repo
  $ cd repo
  $ echo a > a1
  $ echo a > a2
  $ echo b > b1
  $ echo b > b2
  $ hg ci -Am addfiles
  adding a1
  adding a2
  adding b1
  adding b2

Test operators and basic patterns

  $ fileset a1
  a1
  $ fileset 'a*'
  a1
  a2
  $ fileset '"re:a\d"'
  a1
  a2
  $ fileset 'a1 or a2'
  a1
  a2
  $ fileset 'a1 | a2'
  a1
  a2
  $ fileset 'a* and "*1"'
  a1
  $ fileset 'a* & "*1"'
  a1
  $ fileset 'not (r"a*")'
  b1
  b2
  $ fileset '! ("a*")'
  b1
  b2
  $ fileset 'a* - a1'
  a2
  $ fileset 'a_b'

Test files status

  $ rm a1
  $ hg rm a2
  $ echo b >> b2
  $ hg cp b1 c1
  $ echo c > c2
  $ echo c > c3
  $ cat > .hgignore <<EOF
  > \.hgignore
  > 2$
  > EOF
  $ fileset 'modified()'
  b2
  $ fileset 'added()'
  c1
  $ fileset 'removed()'
  a2
  $ fileset 'deleted()'
  a1
  $ fileset 'unknown()'
  c3
  $ fileset 'ignored()'
  .hgignore
  c2
  $ fileset 'hgignore()'
  a2
  b2
  $ fileset 'clean()'
  b1
  $ fileset 'copied()'
  c1

Test files properties

  >>> file('bin', 'wb').write('\0a')
  $ fileset 'binary()'
  $ fileset 'binary() and unknown()'
  bin
  $ echo '^bin$' >> .hgignore
  $ fileset 'binary() and ignored()'
  bin
  $ hg add bin
  $ fileset 'binary()'
  bin

  $ fileset 'grep("b{1}")'
  b2
  c1
  b1
  $ fileset 'grep("missingparens(")'
  hg: parse error: invalid match pattern: unbalanced parenthesis
  [255]

#if execbit
  $ chmod +x b2
  $ fileset 'exec()'
  b2
#endif

#if symlink
  $ ln -s b2 b2link
  $ fileset 'symlink() and unknown()'
  b2link
  $ hg add b2link
#endif

  >>> file('1k', 'wb').write(' '*1024)
  >>> file('2k', 'wb').write(' '*2048)
  $ hg add 1k 2k
  $ fileset 'size("bar")'
  hg: parse error: couldn't parse size: bar
  [255]
  $ fileset 'size(1k)'
  1k
  $ fileset '(1k or 2k) and size("< 2k")'
  1k
  $ fileset '(1k or 2k) and size("<=2k")'
  1k
  2k
  $ fileset '(1k or 2k) and size("> 1k")'
  2k
  $ fileset '(1k or 2k) and size(">=1K")'
  1k
  2k
  $ fileset '(1k or 2k) and size(".5KB - 1.5kB")'
  1k

Test merge states

  $ hg ci -m manychanges
  $ hg up -C 0
  * files updated, 0 files merged, * files removed, 0 files unresolved (glob)
  $ echo c >> b2
  $ hg ci -m diverging b2
  created new head
  $ fileset 'resolved()'
  $ fileset 'unresolved()'
  $ hg merge
  merging b2
  warning: conflicts during merge.
  merging b2 incomplete! (edit conflicts, then use 'hg resolve --mark')
  * files updated, 0 files merged, * files removed, 1 files unresolved (glob)
  use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
  [1]
  $ fileset 'resolved()'
  $ fileset 'unresolved()'
  b2
  $ echo e > b2
  $ hg resolve -m b2
  (no more unresolved files)
  $ fileset 'resolved()'
  b2
  $ fileset 'unresolved()'
  $ hg ci -m merge

Test subrepo predicate

  $ hg init sub
  $ echo a > sub/suba
  $ hg -R sub add sub/suba
  $ hg -R sub ci -m sub
  $ echo 'sub = sub' > .hgsub
  $ fileset 'subrepo()'
  $ hg add .hgsub
  $ fileset 'subrepo()'
  sub
  $ fileset 'subrepo("sub")'
  sub
  $ fileset 'subrepo("glob:*")'
  sub
  $ hg ci -m subrepo

Test with a revision

  $ hg log -G --template '{rev} {desc}\n'
  @  4 subrepo
  |
  o    3 merge
  |\
  | o  2 diverging
  | |
  o |  1 manychanges
  |/
  o  0 addfiles
  
  $ echo unknown > unknown
  $ fileset -r1 'modified()'
  b2
  $ fileset -r1 'added() and c1'
  c1
  $ fileset -r1 'removed()'
  a2
  $ fileset -r1 'deleted()'
  $ fileset -r1 'unknown()'
  $ fileset -r1 'ignored()'
  $ fileset -r1 'hgignore()'
  b2
  bin
  $ fileset -r1 'binary()'
  bin
  $ fileset -r1 'size(1k)'
  1k
  $ fileset -r3 'resolved()'
  $ fileset -r3 'unresolved()'

#if execbit
  $ fileset -r1 'exec()'
  b2
#endif

#if symlink
  $ fileset -r1 'symlink()'
  b2link
#endif

  $ fileset -r4 'subrepo("re:su.*")'
  sub
  $ fileset -r4 'subrepo("sub")'
  sub
  $ fileset -r4 'b2 or c1'
  b2
  c1

  >>> open('dos', 'wb').write("dos\r\n")
  >>> open('mixed', 'wb').write("dos\r\nunix\n")
  >>> open('mac', 'wb').write("mac\r")
  $ hg add dos mixed mac

  $ fileset 'eol(dos)'
  dos
  mixed
  $ fileset 'eol(unix)'
  .hgsub
  .hgsubstate
  a1
  b1
  b2
  c1
  mixed
  $ fileset 'eol(mac)'
  mac