tests/test-newercgi.t

exchangev2: fetch and apply phases data

Now that the server supports emitting phases data, we can request it
and apply it on the client.

Because we may receive phases-only updates from the server, we no
longer conditionally perform the "changesetdata" command depending
on whether there are revisions to fetch. In the previous wire
protocol, this case would result in us falling back to performing
"listkeys" commands to look up phases, bookmarks, etc data. But
since "changesetdata" is smart enough to handle metadata only
fetches, we can keep things consistent.

It's worth noting that because of the unified approach to changeset
data retrieval, phase handling code in wire proto v2 exchange is
drastically simpler. Contrast with all the code in exchange.py
dealing with all the variations for obtaining phases data.

Differential Revision: https://phab.mercurial-scm.org/D4484

#require no-msys # MSYS will translate web paths as if they were file paths

This is a rudimentary test of the CGI files as of d74fc8dec2b4.

  $ hg init test

  $ cat >hgweb.cgi <<HGWEB
  > #!$PYTHON
  > #
  > # An example CGI script to use hgweb, edit as necessary
  > 
  > import cgitb
  > cgitb.enable()
  > 
  > from mercurial import demandimport; demandimport.enable()
  > from mercurial.hgweb import hgweb
  > from mercurial.hgweb import wsgicgi
  > 
  > application = hgweb(b"test", b"Empty test repository")
  > wsgicgi.launch(application)
  > HGWEB

  $ chmod 755 hgweb.cgi

  $ cat >hgweb.config <<HGWEBDIRCONF
  > [paths]
  > test = test
  > HGWEBDIRCONF

  $ cat >hgwebdir.cgi <<HGWEBDIR
  > #!$PYTHON
  > #
  > # An example CGI script to export multiple hgweb repos, edit as necessary
  > 
  > import cgitb
  > cgitb.enable()
  > 
  > from mercurial import demandimport; demandimport.enable()
  > from mercurial.hgweb import hgwebdir
  > from mercurial.hgweb import wsgicgi
  > 
  > application = hgwebdir("hgweb.config")
  > wsgicgi.launch(application)
  > HGWEBDIR

  $ chmod 755 hgwebdir.cgi

  $ . "$TESTDIR/cgienv"
  $ $PYTHON hgweb.cgi > page1
  $ $PYTHON hgwebdir.cgi > page2

  $ PATH_INFO="/test/"
  $ PATH_TRANSLATED="/var/something/test.cgi"
  $ REQUEST_URI="/test/test/"
  $ SCRIPT_URI="http://hg.omnifarious.org/test/test/"
  $ SCRIPT_URL="/test/test/"
  $ $PYTHON hgwebdir.cgi > page3

  $ grep -i error page1 page2 page3
  [1]