tests/test-extension

extensions: load and configure extensions in well-defined phases

Extensions are now loaded with a call-graph like this:

  dispatch._dispatch
      extensions.loadall
          extensions.load
                # add foo module to extensions._extensions
          extensions.load
                # add bar module to extensions._extensions

          foo.uisetup(ui)
          bar.uisetup(ui)

      foo.extsetup()
      bar.extsetup()

      commands.table.update(foo.cmdtable)
      commands.table.update(bar.cmdtable)

  hg.repository
      foo.reposetup(ui, repo)
      bar.reposetup(ui, repo)

The uisetup calls could easily be moved out to dispatch._dispatch, but
have been kept in extensions.loadall since at least TortoiseHg calls
extensions.loadall and expects it to call uisetup.

The extensions.load function called uisetup. It now has an unused ui
argument which has been kept for backwards compatibility.

#!/bin/sh
# Test basic extension support

"$TESTDIR/hghave" no-outer-repo || exit 80

cat > foobar.py <<EOF
import os
from mercurial import commands

def uisetup(ui):
    ui.write("uisetup called\\n")

def reposetup(ui, repo):
    ui.write("reposetup called for %s\\n" % os.path.basename(repo.root))
    ui.write("ui %s= repo.ui\\n" % (ui == repo.ui and "=" or "!"))

def foo(ui, *args, **kwargs):
    ui.write("Foo\\n")

def bar(ui, *args, **kwargs):
    ui.write("Bar\\n")

cmdtable = {
    "foo": (foo, [], "hg foo"),
    "bar": (bar, [], "hg bar"),
}

commands.norepo += ' bar'
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
hg foo

cd ..
hg clone a b

hg bar
echo 'foobar = !' >> $HGRCPATH

echo '% module/__init__.py-style'
echo "barfoo = $barfoopath" >> $HGRCPATH
cd a
hg foo
echo 'barfoo = !' >> $HGRCPATH

# check that extensions are loaded in phases
cat > foo.py <<EOF
import os
name = os.path.basename(__file__).rsplit('.', 1)[0]
print "1) %s imported" % name
def uisetup(ui):
    print "2) %s uisetup" % name
def extsetup():
    print "3) %s extsetup" % name
def reposetup(ui, repo):
    print "4) %s reposetup" % name
EOF

cp foo.py bar.py
echo 'foo = foo.py' >> $HGRCPATH
echo 'bar = bar.py' >> $HGRCPATH

# command with no output, we just want to see the extensions loaded
hg paths

echo 'foo = !' >> $HGRCPATH
echo 'bar = !' >> $HGRCPATH

cd ..
cat > empty.py <<EOF
'''empty cmdtable
'''
cmdtable = {}
EOF
emptypath=`pwd`/empty.py
echo "empty = $emptypath" >> $HGRCPATH
hg help empty
echo 'empty = !' >> $HGRCPATH

cat > debugextension.py <<EOF
'''only debugcommands
'''
def debugfoobar(ui, repo, *args, **opts):
    "yet another debug command"
    pass

def foo(ui, repo, *args, **opts):
    """yet another foo command

    This command has been DEPRECATED since forever.
    """
    pass

cmdtable = {
    "debugfoobar": (debugfoobar, (), "hg debugfoobar"),
    "foo": (foo, (), "hg foo")
}
EOF
debugpath=`pwd`/debugextension.py
echo "debugextension = $debugpath" >> $HGRCPATH
echo "% hg help"
hg help debugextension
echo "% hg help --verbose"
hg --verbose help debugextension
echo "% hg help --debug"
hg --debug help debugextension
echo 'debugextension = !' >> $HGRCPATH

echo % issue811
debugpath=`pwd`/debugissue811.py
cat > debugissue811.py <<EOF
'''show all loaded extensions
'''
from mercurial import extensions, commands

def debugextensions(ui):
    "yet another debug command"
    ui.write("%s\n" % '\n'.join([x for x, y in extensions.extensions()]))

cmdtable = {"debugextensions": (debugextensions, (), "hg debugextensions")}
commands.norepo += " debugextensions"
EOF
echo "debugissue811 = $debugpath" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
echo "hgext.mq=" >> $HGRCPATH
echo "hgext/mq=" >> $HGRCPATH

echo % show extensions
hg debugextensions