Test basic extension support

  $ cat > foobar.py <<EOF

  > import os

  > from mercurial import commands, registrar

  > cmdtable = {}

  > command = registrar.command(cmdtable)

  > configtable = {}

  > configitem = registrar.configitem(configtable)

  > configitem(b'tests', b'foo', default=b"Foo")

  > def uisetup(ui):

  >     ui.debug(b"uisetup called [debug]\\n")

  >     ui.write(b"uisetup called\\n")

  >     ui.status(b"uisetup called [status]\\n")

  >     ui.flush()

  > def reposetup(ui, repo):

  >     ui.write(b"reposetup called for %s\\n" % os.path.basename(repo.root))

  >     ui.write(b"ui %s= repo.ui\\n" % (ui == repo.ui and b"=" or b"!"))

  >     ui.flush()

  > @command(b'foo', [], b'hg foo')

  > def foo(ui, *args, **kwargs):

  >     foo = ui.config(b'tests', b'foo')

  >     ui.write(foo)

  >     ui.write(b"\\n")

  > @command(b'bar', [], b'hg bar', norepo=True)

  > def bar(ui, *args, **kwargs):

  >     ui.write(b"Bar\\n")

  > EOF

  $ abspath=`pwd`/foobar.py

  $ mkdir barfoo

  $ cp foobar.py barfoo/__init__.py

  $ barfoopath=`pwd`/barfoo

  $ hg init a

  $ cd a

  $ echo foo > file

  $ hg add file

  $ hg commit -m 'add file'

  $ echo '[extensions]' >> $HGRCPATH

  $ echo "foobar = $abspath" >> $HGRCPATH

Test extension setup timings

  $ hg foo --traceback --config devel.debug.extensions=yes --debug 2>&1

  debug.extensions: loading extensions

  debug.extensions: - processing 1 entries

  debug.extensions:   - loading extension: 'foobar'

  debug.extensions:   > 'foobar' extension loaded in * (glob)

  debug.extensions:     - validating extension tables: 'foobar'

  debug.extensions:     - invoking registered callbacks: 'foobar'

  debug.extensions:     > callbacks completed in * (glob)

  debug.extensions: > loaded 1 extensions, total time * (glob)

  debug.extensions: - loading configtable attributes

  debug.extensions: - executing uisetup hooks

  debug.extensions:   - running uisetup for 'foobar'

  uisetup called [debug]

  uisetup called

  uisetup called [status]

  debug.extensions:   > uisetup for 'foobar' took * (glob)

  debug.extensions: - executing extsetup hooks

  debug.extensions:   - running extsetup for 'foobar'

  debug.extensions:   > extsetup for 'foobar' 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

  debug.extensions: loading additional extensions

  debug.extensions: - processing 1 entries

  debug.extensions: > loaded 0 extensions, total time * (glob)

  debug.extensions: - loading configtable attributes

  debug.extensions: - executing uisetup hooks

  debug.extensions: - executing extsetup hooks

  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

  debug.extensions: - executing reposetup hooks

  debug.extensions:   - running reposetup for foobar

  reposetup called for a

  ui == repo.ui

  debug.extensions:   > reposetup for 'foobar' took * (glob)

  Foo

  $ cd ..

  $ echo 'foobar = !' >> $HGRCPATH