tests/test-strict.t

fsmonitor: execute setup procedures only if dirstate is already instantiated

Before this patch, reposetup() of fsmonitor executes setup procedures
for dirstate, even if it isn't yet instantiated at that time.

On the other hand, dirstate might be already instantiated before
reposetup() intentionally (prefilling by chg, for example, see
bf3af0eced44 for detail). If so, just discarding already instantiated
one in reposetup() causes issue.

To resolve both issues above, this patch executes setup procedures,
only if dirstate is already instantiated.

BTW, this patch removes "del repo.unfiltered().__dict__['dirstate']",
because it is responsibility of the code path, which causes
instantiation of dirstate before reposetup(). After this patch, using
localrepo.isfilecached() should avoid creating the corresponded entry
in repo.unfiltered().__dict__.

  $ hg init

  $ echo a > a
  $ hg ci -Ama
  adding a

  $ hg an a
  0: a

  $ hg --config ui.strict=False an a
  0: a

  $ echo "[ui]" >> $HGRCPATH
  $ echo "strict=True" >> $HGRCPATH

  $ hg an a
  hg: unknown command 'an'
  Mercurial Distributed SCM
  
  basic commands:
  
   add           add the specified files on the next commit
   annotate      show changeset information by line for each file
   clone         make a copy of an existing repository
   commit        commit the specified files or all outstanding changes
   diff          diff repository (or selected files)
   export        dump the header and diffs for one or more changesets
   forget        forget the specified files on the next commit
   init          create a new repository in the given directory
   log           show revision history of entire repository or files
   merge         merge another revision into working directory
   pull          pull changes from the specified source
   push          push changes to the specified destination
   remove        remove the specified files on the next commit
   serve         start stand-alone webserver
   status        show changed files in the working directory
   summary       summarize working directory state
   update        update working directory (or switch revisions)
  
  (use 'hg help' for the full list of commands or 'hg -v' for details)
  [255]
  $ hg annotate a
  0: a

should succeed - up is an alias, not an abbreviation

  $ hg up
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved