view tests/test-debian-packages.t @ 50741:bca4037306da stable

rust-revlog: fix incorrect results with NULL_NODE prefixes

In case a short hash is a prefix of `NULL_NODE`, the correct revision
number lookup is `NULL_REVISION` only if there is no match in the nodemap.
Indeed, if there is a single nodemap match, then it is an ambiguity with the
always matching `NULL_NODE`.

Before this change, using the Mercurial development repository as a testbed (it
has public changesets with node ID starting with `0005` and `0009`), this is
what `rhg` did (plain `hg` provided for reference)

```
$ rust/target/debug/rhg cat -r 000 README
README: no such file in rev 000000000000
$ hg cat -r 000 README
abort: ambiguous revision identifier: 000
```

Here is the expected output for `rhg` on ambiguous prefixes (again, before
this change):

```
$ rust/target/debug/rhg cat -r 0001 README
abort: ambiguous revision identifier: 0001
```

The test provided by 8c29af0f6d6e in `test-rhg.t` could become flaky with
this change, unless all hashes are fixed. We expect reviewers to be more
sure about that than we are.

#require test-repo slow debhelper debdeps

  $ . "$TESTDIR/helpers-testrepo.sh"
  $ testrepohgenv

Ensure debuild doesn't run the testsuite, as that could get silly.
  $ DEB_BUILD_OPTIONS=nocheck
  $ export DEB_BUILD_OPTIONS
  $ OUTPUTDIR=`pwd`
  $ export OUTPUTDIR

  $ cd "$TESTDIR"/..
  $ make deb > $OUTPUTDIR/build.log 2>&1
  $ cd $OUTPUTDIR
  $ ls *.deb | grep -v 'dbg'
  mercurial_*.deb (glob)
should have .so and .py
  $ dpkg --contents mercurial_*.deb | grep -E '(localrepo|parsers)'
  * ./usr/lib/python3/dist-packages/mercurial/cext/parsers*.so (glob)
  * ./usr/lib/python3/dist-packages/mercurial/localrepo.py (glob)
  * ./usr/lib/python3/dist-packages/mercurial/pure/parsers.py (glob)
should have zsh completions
  $ dpkg --contents mercurial_*.deb | grep -E 'zsh.*[^/]$'
  * ./usr/share/zsh/vendor-completions/_hg (glob)
should have chg
  $ dpkg --contents mercurial_*.deb | grep -E 'chg$'
  * ./usr/bin/chg (glob)
chg should come with a man page
  $ dpkg --contents mercurial_*.deb | grep -E 'man.*chg'
  * ./usr/share/man/man1/chg.1.gz (glob)