comparison tests/test-fix.t @ 42673:74b4cd091e0d

fix: run fixer tools in the repo root as cwd so they can use the working copy

This lets fixer tools do things like find configuration files, with the caveat
that they'll only see the version of that file in the working copy, regardless
of what revisions are being fixed.

Differential Revision: https://phab.mercurial-scm.org/D6440

42672:51a2e3102db2

      files in the working copy were updated. Provides a list "$HG_METADATA"
      mapping fixer tool names to lists of metadata values returned from
      executions that modified a file. This aggregates the same metadata
      previously passed to the "postfixfile" hook.
  
  list of commands:
  
   fix           rewrite file content in changesets or working directory
  
  (use 'hg help -v -e fix' to show built-in aliases and global options)

  $ hg cat -r 2 foo
  ab

  $ cd ..

Tools configured without a pattern are ignored. It would be too dangerous to
run them on all files, because this might happen while testing a configuration
that also deletes all of the file content. There is no reasonable subset of the
files to use as a default. Users should be explicit about what files are
affected by a tool. This test also confirms that we don't crash when the

42673:74b4cd091e0d

      files in the working copy were updated. Provides a list "$HG_METADATA"
      mapping fixer tool names to lists of metadata values returned from
      executions that modified a file. This aggregates the same metadata
      previously passed to the "postfixfile" hook.
  
  Fixer tools are run the in repository's root directory. This allows them to
  read configuration files from the working copy, or even write to the working
  copy. The working copy is not updated to match the revision being fixed. In
  fact, several revisions may be fixed in parallel. Writes to the working copy
  are not amended into the revision being fixed; fixer tools should always write
  fixed file content back to stdout as documented above.
  
  list of commands:
  
   fix           rewrite file content in changesets or working directory
  
  (use 'hg help -v -e fix' to show built-in aliases and global options)

  $ hg cat -r 2 foo
  ab

  $ cd ..

We run fixer tools in the repo root so they can look for config files or other
important things in the working directory. This does NOT mean we are
reconstructing a working copy of every revision being fixed; we're just giving
the tool knowledge of the repo's location in case it can do something
reasonable with that.

  $ hg init subprocesscwd
  $ cd subprocesscwd

  $ cat >> .hg/hgrc <<EOF
  > [fix]
  > printcwd:command = pwd
  > printcwd:pattern = path:foo/bar
  > EOF

  $ mkdir foo
  $ printf "bar\n" > foo/bar
  $ hg commit -Aqm blah

  $ hg fix -w -r . foo/bar
  $ hg cat -r tip foo/bar
  $TESTTMP/subprocesscwd
  $ cat foo/bar
  $TESTTMP/subprocesscwd

  $ cd foo

  $ hg fix -w -r . bar
  $ hg cat -r tip bar
  $TESTTMP/subprocesscwd
  $ cat bar
  $TESTTMP/subprocesscwd

  $ cd ../..

Tools configured without a pattern are ignored. It would be too dangerous to
run them on all files, because this might happen while testing a configuration
that also deletes all of the file content. There is no reasonable subset of the
files to use as a default. Users should be explicit about what files are
affected by a tool. This test also confirms that we don't crash when the