view tests/test-hgrc.t @ 29375:fcaf20175b1b

demandimport: delay loading for "from a import b" with absolute_import Before this patch, "from a import b" doesn't delay loading module "b", if absolute_import is enabled, even though "from . import b" does. For example: - it is assumed that extension X has "from P import M" for module M under package P with absolute_import feature - if importing module M is already delayed before loading extension X, loading module M in extension X is delayed until actually referring util, cmdutil, scmutil or so of Mercurial itself should be imported by "from . import M" style before loading extension X - otherwise, module M is loaded immediately at loading extension X, even if extension X itself isn't used at that "hg" command invocation Some minor modules (e.g. filemerge or so) of Mercurial itself aren't imported by "from . import M" style before loading extension X. And of course, external libraries aren't, too. This might cause startup performance problem of hg command, because many bundled extensions already enable absolute_import feature. To delay loading module for "from a import b" with absolute_import feature, this patch does below in "from a (or .a) import b" with absolute_import case: 1. import root module of "name" by system built-in __import__ (referred as _origimport) 2. recurse down the module chain for hierarchical "name" This logic can be shared with non absolute_import case. Therefore, this patch also centralizes it into chainmodules(). 3. and fall through to process elements in "fromlist" for the leaf module of "name" Processing elements in "fromlist" is executed in the code path after "if _pypy: .... else: ..." clause. Therefore, this patch replaces "if _pypy:" with "elif _pypy:" to share it. At 4f1144c3c72b introducing original "work around" for "from a import b" case, elements in "fromlist" were imported with "level=level". But "level" might be grater than 1 (e.g. level=2 in "from .. import b" case) at demandimport() invocation, and importing direct sub-module in "fromlist" with level grater than 1 causes unexpected result. IMHO, this seems main reason of "errors for unknown reason" described in 4f1144c3c72b, and we don't have to worry about it, because this issue was already fixed by 78d05778907b. This is reason why this patch removes "errors for unknown reasons" comment.
author FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
date Sun, 19 Jun 2016 02:17:33 +0900
parents 6aa17f86d9f0
children 3d2ea1403c62
line wrap: on
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hide outer repo
  $ hg init

Use hgrc within $TESTTMP

  $ HGRCPATH=`pwd`/hgrc
  $ export HGRCPATH

Use an alternate var for scribbling on hgrc to keep check-code from
complaining about the important settings we may be overwriting:

  $ HGRC=`pwd`/hgrc
  $ export HGRC

Basic syntax error

  $ echo "invalid" > $HGRC
  $ hg version
  hg: parse error at $TESTTMP/hgrc:1: invalid
  [255]
  $ echo "" > $HGRC

Issue1199: Can't use '%' in hgrc (eg url encoded username)

  $ hg init "foo%bar"
  $ hg clone "foo%bar" foobar
  updating to branch default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd foobar
  $ cat .hg/hgrc
  # example repository config (see "hg help config" for more info)
  [paths]
  default = $TESTTMP/foo%bar (glob)
  
  # path aliases to other clones of this repo in URLs or filesystem paths
  # (see "hg help config.paths" for more info)
  #
  # default-push = ssh://jdoe@example.net/hg/jdoes-fork
  # my-fork      = ssh://jdoe@example.net/hg/jdoes-fork
  # my-clone     = /home/jdoe/jdoes-clone
  
  [ui]
  # name and email (local to this repository, optional), e.g.
  # username = Jane Doe <jdoe@example.com>
  $ hg paths
  default = $TESTTMP/foo%bar (glob)
  $ hg showconfig
  bundle.mainreporoot=$TESTTMP/foobar (glob)
  extensions.chgserver= (?)
  paths.default=$TESTTMP/foo%bar (glob)
  $ cd ..

issue1829: wrong indentation

  $ echo '[foo]' > $HGRC
  $ echo '  x = y' >> $HGRC
  $ hg version
  hg: parse error at $TESTTMP/hgrc:2:   x = y
  unexpected leading whitespace
  [255]

  $ $PYTHON -c "print '[foo]\nbar = a\n b\n c \n  de\n fg \nbaz = bif cb \n'" \
  > > $HGRC
  $ hg showconfig foo
  foo.bar=a\nb\nc\nde\nfg
  foo.baz=bif cb

  $ FAKEPATH=/path/to/nowhere
  $ export FAKEPATH
  $ echo '%include $FAKEPATH/no-such-file' > $HGRC
  $ hg version
  Mercurial Distributed SCM (version *) (glob)
  (see https://mercurial-scm.org for more information)
  
  Copyright (C) 2005-2016 Matt Mackall and others
  This is free software; see the source for copying conditions. There is NO
  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  $ unset FAKEPATH

make sure global options given on the cmdline take precedence

  $ hg showconfig --config ui.verbose=True --quiet
  bundle.mainreporoot=$TESTTMP
  extensions.chgserver= (?)
  ui.verbose=False
  ui.debug=False
  ui.quiet=True

  $ touch foobar/untracked
  $ cat >> foobar/.hg/hgrc <<EOF
  > [ui]
  > verbose=True
  > EOF
  $ hg -R foobar st -q

username expansion

  $ olduser=$HGUSER
  $ unset HGUSER

  $ FAKEUSER='John Doe'
  $ export FAKEUSER
  $ echo '[ui]' > $HGRC
  $ echo 'username = $FAKEUSER' >> $HGRC

  $ hg init usertest
  $ cd usertest
  $ touch bar
  $ hg commit --addremove --quiet -m "added bar"
  $ hg log --template "{author}\n"
  John Doe
  $ cd ..

  $ hg showconfig
  bundle.mainreporoot=$TESTTMP
  extensions.chgserver= (?)
  ui.username=$FAKEUSER

  $ unset FAKEUSER
  $ HGUSER=$olduser
  $ export HGUSER

showconfig with multiple arguments

  $ echo "[alias]" > $HGRC
  $ echo "log = log -g" >> $HGRC
  $ echo "[defaults]" >> $HGRC
  $ echo "identify = -n" >> $HGRC
  $ hg showconfig alias defaults
  alias.log=log -g
  defaults.identify=-n
  $ hg showconfig alias defaults.identify
  abort: only one config item permitted
  [255]
  $ hg showconfig alias.log defaults.identify
  abort: only one config item permitted
  [255]

HGPLAIN

  $ echo "[ui]" > $HGRC
  $ echo "debug=true" >> $HGRC
  $ echo "fallbackencoding=ASCII" >> $HGRC
  $ echo "quiet=true" >> $HGRC
  $ echo "slash=true" >> $HGRC
  $ echo "traceback=true" >> $HGRC
  $ echo "verbose=true" >> $HGRC
  $ echo "style=~/.hgstyle" >> $HGRC
  $ echo "logtemplate={node}" >> $HGRC
  $ echo "[defaults]" >> $HGRC
  $ echo "identify=-n" >> $HGRC
  $ echo "[alias]" >> $HGRC
  $ echo "log=log -g" >> $HGRC

customized hgrc

  $ hg showconfig
  read config from: $TESTTMP/hgrc
  $TESTTMP/hgrc:13: alias.log=log -g
  repo: bundle.mainreporoot=$TESTTMP
  $TESTTMP/hgrc:11: defaults.identify=-n
  --config: extensions.chgserver= (?)
  $TESTTMP/hgrc:2: ui.debug=true
  $TESTTMP/hgrc:3: ui.fallbackencoding=ASCII
  $TESTTMP/hgrc:4: ui.quiet=true
  $TESTTMP/hgrc:5: ui.slash=true
  $TESTTMP/hgrc:6: ui.traceback=true
  $TESTTMP/hgrc:7: ui.verbose=true
  $TESTTMP/hgrc:8: ui.style=~/.hgstyle
  $TESTTMP/hgrc:9: ui.logtemplate={node}

plain hgrc

  $ HGPLAIN=; export HGPLAIN
  $ hg showconfig --config ui.traceback=True --debug
  read config from: $TESTTMP/hgrc
  repo: bundle.mainreporoot=$TESTTMP
  --config: extensions.chgserver= (?)
  --config: ui.traceback=True
  --verbose: ui.verbose=False
  --debug: ui.debug=True
  --quiet: ui.quiet=False

plain mode with exceptions

  $ cat > plain.py <<EOF
  > from mercurial import commands, extensions
  > def _config(orig, ui, repo, *values, **opts):
  >     ui.write('plain: %r\n' % ui.plain())
  >     return orig(ui, repo, *values, **opts)
  > def uisetup(ui):
  >     extensions.wrapcommand(commands.table, 'config', _config)
  > EOF
  $ echo "[extensions]" >> $HGRC
  $ echo "plain=./plain.py" >> $HGRC
  $ HGPLAINEXCEPT=; export HGPLAINEXCEPT
  $ hg showconfig --config ui.traceback=True --debug
  plain: True
  read config from: $TESTTMP/hgrc
  repo: bundle.mainreporoot=$TESTTMP
  $TESTTMP/hgrc:15: extensions.plain=./plain.py
  --config: extensions.chgserver= (?)
  --config: ui.traceback=True
  --verbose: ui.verbose=False
  --debug: ui.debug=True
  --quiet: ui.quiet=False
  $ unset HGPLAIN
  $ hg showconfig --config ui.traceback=True --debug
  plain: True
  read config from: $TESTTMP/hgrc
  repo: bundle.mainreporoot=$TESTTMP
  $TESTTMP/hgrc:15: extensions.plain=./plain.py
  --config: extensions.chgserver= (?)
  --config: ui.traceback=True
  --verbose: ui.verbose=False
  --debug: ui.debug=True
  --quiet: ui.quiet=False
  $ HGPLAINEXCEPT=i18n; export HGPLAINEXCEPT
  $ hg showconfig --config ui.traceback=True --debug
  plain: True
  read config from: $TESTTMP/hgrc
  repo: bundle.mainreporoot=$TESTTMP
  $TESTTMP/hgrc:15: extensions.plain=./plain.py
  --config: extensions.chgserver= (?)
  --config: ui.traceback=True
  --verbose: ui.verbose=False
  --debug: ui.debug=True
  --quiet: ui.quiet=False

source of paths is not mangled

  $ cat >> $HGRCPATH <<EOF
  > [paths]
  > foo = bar
  > EOF
  $ hg showconfig --debug paths
  plain: True
  read config from: $TESTTMP/hgrc
  $TESTTMP/hgrc:17: paths.foo=$TESTTMP/bar (glob)