view tests/test-newercgi.t @ 25732:b94df10cc3b5

hghave: allow adding customized features at runtime

Before this patch, there is no way to add customized features to
`hghave` without changing `hghave` and `hghave.py` themselves.

This decreases reusability of `run-tests.py` framework for third party
tools, because they may want to examine custom features at runtime
(e.g.  existence of some external tools).

To allow adding customized features at runtime, this patch makes
`hghave` import `hghaveaddon` module, only when `hghaveaddon.py` file
can be found in directories below:

  - `TESTDIR` for invocation via `run-tests.py`
  - `.` for invocation via command line

The path to the directory where `hghaveaddon.py` should be placed is
added to `sys.path` only while importing `hghaveaddon`, because:

  - `.` may not be added to `PYTHONPATH`

  - adding additional path to `sys.path` may change behavior of
    subsequent `import` for other features

`hghave` is terminated with exit code '2' at failure of `import
hghaveaddon`, because exit code '2' terminates `run-tests.py`
immediately.

This is a one of preparations for issue4677.

#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
  > #!/usr/bin/env 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("test", "Empty test repository")
  > wsgicgi.launch(application)
  > HGWEB

  $ chmod 755 hgweb.cgi

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

  $ cat >hgwebdir.cgi <<HGWEBDIR
  > #!/usr/bin/env 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]