view tests/test-bad-extension.t @ 39110:f0c2653ca706

merge: add tests for commit with no content change

It isn't easy to say when to reuse the p1 manifest. Basically, that's only
when wctx.files() is empty, but we need to know that wctx.files() is not
the same as repo['.'].files() after the commit.

This patch adds several examples of commits with empty ctx/wctx.files().
I don't think this is exhaustive, but it contains at least one failure
mode in which a converted repo result in a different hash.

I also note that the manifest revlog does NOT follow the DAG shape of the
changelog since p1 manifest is reused if wctx.files() is empty even at merge.
I don't know whether it is intentional or not, but it's the behavior since
2011, 301725c3df9a "localrepo: reuse parent manifest in commitctx if no files
have changed."

ensure that failing ui.atexit handlers report sensibly

  $ cat > $TESTTMP/bailatexit.py <<EOF
  > from mercurial import util
  > def bail():
  >     raise RuntimeError('ui.atexit handler exception')
  > 
  > def extsetup(ui):
  >     ui.atexit(bail)
  > EOF
  $ hg -q --config extensions.bailatexit=$TESTTMP/bailatexit.py \
  >  help help
  hg help [-ecks] [TOPIC]
  
  show help for a given topic or a help overview
  error in exit handlers:
  Traceback (most recent call last):
    File "*/mercurial/dispatch.py", line *, in _runexithandlers (glob)
      func(*args, **kwargs)
    File "$TESTTMP/bailatexit.py", line *, in bail (glob)
      raise RuntimeError('ui.atexit handler exception')
  RuntimeError: ui.atexit handler exception
  [255]

  $ rm $TESTTMP/bailatexit.py

another bad extension

  $ echo 'raise Exception("bit bucket overflow")' > badext.py
  $ abspathexc=`pwd`/badext.py

  $ cat >baddocext.py <<EOF
  > """
  > baddocext is bad
  > """
  > EOF
  $ abspathdoc=`pwd`/baddocext.py

  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > gpg =
  > hgext.gpg =
  > badext = $abspathexc
  > baddocext = $abspathdoc
  > badext2 =
  > EOF

  $ hg -q help help 2>&1 |grep extension
  *** failed to import extension badext from $TESTTMP/badext.py: bit bucket overflow
  *** failed to import extension badext2: No module named badext2

show traceback

  $ hg -q help help --traceback 2>&1 | egrep ' extension|^Exception|Traceback|ImportError'
  *** failed to import extension badext from $TESTTMP/badext.py: bit bucket overflow
  Traceback (most recent call last):
  Exception: bit bucket overflow
  *** failed to import extension badext2: No module named badext2
  Traceback (most recent call last):
  ImportError: No module named badext2

names of extensions failed to load can be accessed via extensions.notloaded()

  $ cat <<EOF > showbadexts.py
  > from mercurial import commands, extensions, registrar
  > cmdtable = {}
  > command = registrar.command(cmdtable)
  > @command(b'showbadexts', norepo=True)
  > def showbadexts(ui, *pats, **opts):
  >     ui.write('BADEXTS: %s\n' % ' '.join(sorted(extensions.notloaded())))
  > EOF
  $ hg --config extensions.badexts=showbadexts.py showbadexts 2>&1 | grep '^BADEXTS'
  BADEXTS: badext badext2

show traceback for ImportError of hgext.name if devel.debug.extensions is set

  $ (hg help help --traceback --debug --config devel.debug.extensions=yes 2>&1) \
  > | grep -v '^ ' \
  > | egrep 'extension..[^p]|^Exception|Traceback|ImportError|not import'
  debug.extensions: loading extensions
  debug.extensions: - processing 5 entries
  debug.extensions:   - loading extension: 'gpg'
  debug.extensions:   > 'gpg' extension loaded in * (glob)
  debug.extensions:     - validating extension tables: 'gpg'
  debug.extensions:     - invoking registered callbacks: 'gpg'
  debug.extensions:     > callbacks completed in * (glob)
  debug.extensions:   - loading extension: 'badext'
  *** failed to import extension badext from $TESTTMP/badext.py: bit bucket overflow
  Traceback (most recent call last):
  Exception: bit bucket overflow
  debug.extensions:   - loading extension: 'baddocext'
  debug.extensions:   > 'baddocext' extension loaded in * (glob)
  debug.extensions:     - validating extension tables: 'baddocext'
  debug.extensions:     - invoking registered callbacks: 'baddocext'
  debug.extensions:     > callbacks completed in * (glob)
  debug.extensions:   - loading extension: 'badext2'
  debug.extensions:     - could not import hgext.badext2 (No module named badext2): trying hgext3rd.badext2
  Traceback (most recent call last):
  ImportError: No module named *badext2 (glob)
  debug.extensions:     - could not import hgext3rd.badext2 (No module named badext2): trying badext2
  Traceback (most recent call last):
  ImportError: No module named *badext2 (glob)
  *** failed to import extension badext2: No module named badext2
  Traceback (most recent call last):
  ImportError: No module named badext2
  debug.extensions: > loaded 2 extensions, total time * (glob)
  debug.extensions: - loading configtable attributes
  debug.extensions: - executing uisetup hooks
  debug.extensions:   - running uisetup for 'gpg'
  debug.extensions:   > uisetup for 'gpg' took * (glob)
  debug.extensions:   - running uisetup for 'baddocext'
  debug.extensions:   > uisetup for 'baddocext' took * (glob)
  debug.extensions: - executing extsetup hooks
  debug.extensions:   - running extsetup for 'gpg'
  debug.extensions:   > extsetup for 'gpg' took * (glob)
  debug.extensions:   - running extsetup for 'baddocext'
  debug.extensions:   > extsetup for 'baddocext' took * (glob)
  debug.extensions: - executing remaining aftercallbacks
  debug.extensions: > remaining aftercallbacks completed in * (glob)
  debug.extensions: - loading extension registration objects
  debug.extensions: > extension registration object loading took * (glob)
  debug.extensions: extension loading complete

confirm that there's no crash when an extension's documentation is bad

  $ hg help --keyword baddocext
  *** failed to import extension badext from $TESTTMP/badext.py: bit bucket overflow
  *** failed to import extension badext2: No module named badext2
  Topics:
  
   extensions Using Additional Features