view tests/test-audit-subrepo.t @ 39494:e72130f58f5d

snapshot: consider all snapshots in the parents' chains

There are no reasons to only consider full snapshot as a possible base for an
intermediate snapshot.  Now that the basic principles have been set, we can
start adding more levels of snapshots.

We now consider all snapshots in the parent's chains (full or intermediate).
This creates a chain of intermediate snapshots, each smaller than the previous
one.

# Effect On The Test Repository

In the test repository, we can see a decrease in the revlog size and slightly
shorter delta chain.

However, that approach creates snapshots more frequently, increasing the risk
of ending into problematic cases in very branchy repositories (not triggered
by the test repository). The next changesets will remove that risk by adding
logic that increases deltas reuse.

Test illegal name
-----------------

on commit:

  $ hg init hgname
  $ cd hgname
  $ mkdir sub
  $ hg init sub/.hg
  $ echo 'sub/.hg = sub/.hg' >> .hgsub
  $ hg ci -qAm 'add subrepo "sub/.hg"'
  abort: path 'sub/.hg' is inside nested repo 'sub'
  [255]

prepare tampered repo (including the commit above):

  $ hg import --bypass -qm 'add subrepo "sub/.hg"' - <<'EOF'
  > diff --git a/.hgsub b/.hgsub
  > new file mode 100644
  > --- /dev/null
  > +++ b/.hgsub
  > @@ -0,0 +1,1 @@
  > +sub/.hg = sub/.hg
  > diff --git a/.hgsubstate b/.hgsubstate
  > new file mode 100644
  > --- /dev/null
  > +++ b/.hgsubstate
  > @@ -0,0 +1,1 @@
  > +0000000000000000000000000000000000000000 sub/.hg
  > EOF
  $ cd ..

on clone (and update):

  $ hg clone -q hgname hgname2
  abort: path 'sub/.hg' is inside nested repo 'sub'
  [255]

Test direct symlink traversal
-----------------------------

#if symlink

on commit:

  $ mkdir hgsymdir
  $ hg init hgsymdir/root
  $ cd hgsymdir/root
  $ ln -s ../out
  $ hg ci -qAm 'add symlink "out"'
  $ hg init ../out
  $ echo 'out = out' >> .hgsub
  $ hg ci -qAm 'add subrepo "out"'
  abort: subrepo 'out' traverses symbolic link
  [255]

prepare tampered repo (including the commit above):

  $ hg import --bypass -qm 'add subrepo "out"' - <<'EOF'
  > diff --git a/.hgsub b/.hgsub
  > new file mode 100644
  > --- /dev/null
  > +++ b/.hgsub
  > @@ -0,0 +1,1 @@
  > +out = out
  > diff --git a/.hgsubstate b/.hgsubstate
  > new file mode 100644
  > --- /dev/null
  > +++ b/.hgsubstate
  > @@ -0,0 +1,1 @@
  > +0000000000000000000000000000000000000000 out
  > EOF
  $ cd ../..

on clone (and update):

  $ mkdir hgsymdir2
  $ hg clone -q hgsymdir/root hgsymdir2/root
  abort: subrepo 'out' traverses symbolic link
  [255]
  $ ls hgsymdir2
  root

#endif

Test indirect symlink traversal
-------------------------------

#if symlink

on commit:

  $ mkdir hgsymin
  $ hg init hgsymin/root
  $ cd hgsymin/root
  $ ln -s ../out
  $ hg ci -qAm 'add symlink "out"'
  $ mkdir ../out
  $ hg init ../out/sub
  $ echo 'out/sub = out/sub' >> .hgsub
  $ hg ci -qAm 'add subrepo "out/sub"'
  abort: path 'out/sub' traverses symbolic link 'out'
  [255]

prepare tampered repo (including the commit above):

  $ hg import --bypass -qm 'add subrepo "out/sub"' - <<'EOF'
  > diff --git a/.hgsub b/.hgsub
  > new file mode 100644
  > --- /dev/null
  > +++ b/.hgsub
  > @@ -0,0 +1,1 @@
  > +out/sub = out/sub
  > diff --git a/.hgsubstate b/.hgsubstate
  > new file mode 100644
  > --- /dev/null
  > +++ b/.hgsubstate
  > @@ -0,0 +1,1 @@
  > +0000000000000000000000000000000000000000 out/sub
  > EOF
  $ cd ../..

on clone (and update):

  $ mkdir hgsymin2
  $ hg clone -q hgsymin/root hgsymin2/root
  abort: path 'out/sub' traverses symbolic link 'out'
  [255]
  $ ls hgsymin2
  root

#endif