comparison tests/test-log.t @ 45473:5f0eeda2005d

log: make -frREV PATH detect missing files before falling back to slow path

If -rREV isn't specified, "log --follow" would abort on nonexistent paths.
Let's implement this behavior for "-frREV" case as we have ctx.hasdir() now.
Otherwise "log -frREV PATH" would silently fall back to slow path and files
wouldn't be followed across renames.

The loop is quadratic (as before), but the size of the startctxs and
match.files() should be small in general.

Some tests are marked as BROKEN since file renames aren't tracked in the
slow path. This is a known limitation of the current history traversal
function.

45472:07324227f6b7

  2 (false !)
  1 (false !)
  0 (false !)

follow files from the specified revisions with missing patterns
(BROKEN: should follow copies from e@4)

  $ hg log -T '{rev}\n' -fr4 e x
  4
  2 (false !)
  1 (false !)
  0 (false !)

follow files from the specified revisions across copies with -p/--patch

  $ hg log -T '== rev: {rev},{file_copies % " {source}->{name}"} ==\n' -fpr 4 e g
  == rev: 4, dir/b->e ==

   d1/f1 |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)
  

  $ hg log -T '== {rev} ==\n' -fr'wdir()' --git --stat notfound
  notfound: $ENOENT$

follow added/removed files from wdir parent

  $ hg log -T '{rev}\n' -f d1/f2
  abort: cannot follow nonexistent file: "d1/f2"

45473:5f0eeda2005d

  2 (false !)
  1 (false !)
  0 (false !)

follow files from the specified revisions with missing patterns

  $ hg log -T '{rev}\n' -fr4 e x
  abort: cannot follow file not in any of the specified revisions: "x"
  [255]

follow files from the specified revisions with directory patterns
(BROKEN: should follow copies from dir/b@2)

  $ hg log -T '{rev}\n' -fr2 dir/b dir
  2
  1 (false !)
  0 (false !)

follow files from multiple revisions, but the pattern is missing in
one of the specified revisions

  $ hg log -T '{rev}\n' -fr'2+4' dir/b e
  e: no such file in rev f8954cd4dc1f
  dir/b: no such file in rev 7e4639b4691b
  4
  2
  1
  0

follow files from multiple revisions, and the pattern matches a file in
one revision but matches a directory in another:
(BROKEN: should follow copies from dir/b@2 and dir/b/g@5)
(BROKEN: the revision 4 should not be included since dir/b/g@5 is unchanged)

  $ mkdir -p dir/b
  $ hg mv g dir/b
  $ hg ci -m 'make dir/b a directory'

  $ hg log -T '{rev}\n' -fr'2+5' dir/b
  5
  4
  3 (false !)
  2
  1 (false !)
  0 (false !)

  $ hg --config extensions.strip= strip -r. --no-backup
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

follow files from the specified revisions across copies with -p/--patch

  $ hg log -T '== rev: {rev},{file_copies % " {source}->{name}"} ==\n' -fpr 4 e g
  == rev: 4, dir/b->e ==

   d1/f1 |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)
  

  $ hg log -T '== {rev} ==\n' -fr'wdir()' --git --stat notfound
  abort: cannot follow file not in any of the specified revisions: "notfound"
  [255]

follow files from wdir and non-wdir revision:

  $ hg log -T '{rev}\n' -fr'wdir()+.' f1-copy
  f1-copy: no such file in rev 65624cd9070a
  2147483647
  0

follow added/removed files from wdir parent

  $ hg log -T '{rev}\n' -f d1/f2
  abort: cannot follow nonexistent file: "d1/f2"