view tests/test-eol-clone.t @ 44185:a19331456d48

rust-nodemap: mutable NodeTree data structure

Thanks to the previously indexing abstraction,
the only difference in the lookup algorithm is that we
don't need the special case for an empty NodeTree any more.

We've considered making the mutable root an `Option<Block>`,
but that leads to unpleasant checks and `unwrap()` unless we
abstract it as typestate patterns (`NodeTree<Immutable>` and
`NodeTree<Mutated>`) which seem exaggerated in that
case.

The initial copy of the root block is a very minor
performance penalty, given that it typically occurs just once
per transaction.

Differential Revision: https://phab.mercurial-scm.org/D7793

Testing cloning with the EOL extension

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > eol =
  > 
  > [eol]
  > native = CRLF
  > EOF

setup repository

  $ hg init repo
  $ cd repo
  $ cat > .hgeol <<EOF
  > [patterns]
  > **.txt = native
  > EOF
  $ printf "first\r\nsecond\r\nthird\r\n" > a.txt
  $ hg commit --addremove -m 'checkin'
  adding .hgeol
  adding a.txt

Test commit of removed .hgeol and how it immediately makes the automatic
changes explicit and committable.

  $ cd ..
  $ hg clone repo repo-2
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo-2
  $ cat a.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)
  $ hg cat a.txt
  first
  second
  third
  $ hg remove .hgeol
  $ touch a.txt *  # ensure consistent st dirtyness checks, ignoring dirstate timing
  $ hg st -v --debug
  M a.txt
  R .hgeol
  $ hg commit -m 'remove eol'
  $ hg exp
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Node ID 3c20c2d90333b6ecdc8f7aa8f9b73223c7c7a608
  # Parent  90f94e2cf4e24628afddd641688dfe4cd476d6e4
  remove eol
  
  diff -r 90f94e2cf4e2 -r 3c20c2d90333 .hgeol
  --- a/.hgeol	Thu Jan 01 00:00:00 1970 +0000
  +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,2 +0,0 @@
  -[patterns]
  -**.txt = native
  diff -r 90f94e2cf4e2 -r 3c20c2d90333 a.txt
  --- a/a.txt	Thu Jan 01 00:00:00 1970 +0000
  +++ b/a.txt	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,3 +1,3 @@
  -first
  -second
  -third
  +first\r (esc)
  +second\r (esc)
  +third\r (esc)
  $ hg push --quiet
  $ cd ..

Test clone of repo with .hgeol in working dir, but no .hgeol in default
checkout revision tip. The repo is correctly updated to be consistent and have
the exact content checked out without filtering, ignoring the current .hgeol in
the source repo:

  $ cat repo/.hgeol
  [patterns]
  **.txt = native
  $ hg clone repo repo-3 -v --debug
  linked 7 files
  updating to branch default
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: 000000000000, local: 000000000000+, remote: 3c20c2d90333
  calling hook preupdate.eol: hgext.eol.preupdate
   a.txt: remote created -> g
  getting a.txt
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo-3

  $ cat a.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)

Test clone of revision with .hgeol

  $ cd ..
  $ hg clone -r 0 repo repo-4
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 2 changes to 2 files
  new changesets 90f94e2cf4e2
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo-4
  $ cat .hgeol
  [patterns]
  **.txt = native

  $ cat a.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)

  $ cd ..