tests/test-sparse-verbose-json.t

narrow_widen_acl: enforce narrowacl in narrow_widen (SEC)

Reviewer note: this was sent by the author as a simple bugfix, but can be
considered a security patch, since it allows users to access things outside
of the ACL, hence the (SEC) prefix.

However, this affects the `narrow` extention which is still marked as
experimental and has relatively few users aside from large companies with
their own security layers on top from what we can gather.
We feel (Alphare: or at least, I feel) like pinging the packaging list is
enough in this case.

test sparse with --verbose and -T json

  $ hg init myrepo
  $ cd myrepo
  $ cat > .hg/hgrc <<EOF
  > [extensions]
  > sparse=
  > strip=
  > EOF

  $ echo a > show
  $ echo x > hide
  $ hg ci -Aqm 'initial'

  $ echo b > show
  $ echo y > hide
  $ echo aa > show2
  $ echo xx > hide2
  $ hg ci -Aqm 'two'

Verify basic --include and --reset

  $ hg up -q 0
  $ hg debugsparse --include 'hide' -Tjson
  [
   {
    "exclude_rules_added": 0,
    "files_added": 0,
    "files_conflicting": 0,
    "files_dropped": 1,
    "include_rules_added": 1,
    "profiles_added": 0
   }
  ]
  $ hg debugsparse --clear-rules
  $ hg debugsparse --include 'hide' --verbose
  removing show
  Profiles changed: 0
  Include rules changed: 1
  Exclude rules changed: 0

  $ hg debugsparse --reset -Tjson
  [
   {
    "exclude_rules_added": 0,
    "files_added": 1,
    "files_conflicting": 0,
    "files_dropped": 0,
    "include_rules_added": -1,
    "profiles_added": 0
   }
  ]
  $ hg debugsparse --include 'hide'
  $ hg debugsparse --reset --verbose
  getting show
  Profiles changed: 0
  Include rules changed: -1
  Exclude rules changed: 0

Verifying that problematic files still allow us to see the deltas when forcing:

  $ hg debugsparse --include 'show*'
  $ touch hide
  $ hg debugsparse --delete 'show*' --force -Tjson
  pending changes to 'hide'
  [
   {
    "exclude_rules_added": 0,
    "files_added": 0,
    "files_conflicting": 1,
    "files_dropped": 0,
    "include_rules_added": -1,
    "profiles_added": 0
   }
  ]
  $ hg debugsparse --include 'show*' --force
  pending changes to 'hide'
  $ hg debugsparse --delete 'show*' --force --verbose
  pending changes to 'hide'
  Profiles changed: 0
  Include rules changed: -1
  Exclude rules changed: 0