tests/test-gpg.t

hgweb: show as same parents as "hg parents -r REV FILE" in pages for file

Before this patch, "parents" in pages for file doesn't show as same
parents as "hg parents -r REV FILE", when the specified file is not
modified in the specified revision.

For example, it is assumed that revision A, B and D change file "f".

    changelog   (A) ---> (B) ---> (C) ---> (D)
    filelog "f" (x) ---> (y) ------------> (z)

"/file/D/f" invokes "webutil.parents()" with filectx(z) gotten from
changectx(D), and it returns changectx(B). This is as same result as
"hg parents -r D f".

In the other hand, "/file/C/f" invokes "webutil.parents()" with
filectx(y') gotten from changectx(C), and it returns changectx(A),
because filectx(y') is linked to changectx(B), and works like
filectx(y) in some cases.

In this case, revision B is hidden from users browsing file "f" in
revision C.

This patch shows as same parents as "hg parents -r REV FILE" in pages
for file, by making "webutil.parents()" return:

  - "linkrev()"-ed revision only, if:

    - specified context instance is "filectx" (because
      "webutil.parents()" is invoked with changectx, too), and

    - (1) the revision from which filectx is gotten and (2) the one to
      which filectx is linked are different from each other

  - revision gotten from "ctx.parents()", otherwise

Test the GPG extension

  $ "$TESTDIR/hghave" gpg || exit 80
  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > gpg=
  > 
  > [gpg]
  > cmd=gpg --no-permission-warning --no-secmem-warning --no-auto-check-trustdb --homedir "$TESTDIR/gpg"
  > EOF
  $ hg init r
  $ cd r
  $ echo foo > foo
  $ hg ci -Amfoo
  adding foo

  $ hg sigs

  $ hg sign 0
  signing 0:e63c23eaa88a

  $ hg sigs
  hgtest                             0:e63c23eaa88ae77967edcf4ea194d31167c478b0

  $ hg sigcheck 0
  e63c23eaa88a is signed by:
   hgtest

verify that this test has not modified the trustdb.gpg file back in
the main hg working dir
  $ "$TESTDIR/md5sum.py" "$TESTDIR/gpg/trustdb.gpg"
  f6b9c78c65fa9536e7512bb2ceb338ae  */gpg/trustdb.gpg (glob)

don't leak any state to next test run
  $ rm -f "$TESTDIR/gpg/random_seed"

  $ cd ..