Deprecate and warn about --genscript, fixes pytest-dev#730

Author: cpommranz

CHANGELOG

@@ -1,5 +1,6 @@
 2.8.0.dev (compared to 2.7.X)
 -----------------------------
+- deprecate and warn about the --genscript option
 
 - fix issue82: avoid loading conftest files from setup.cfg/pytest.ini/tox.ini
   files and upwards by default (--confcutdir can still be set to override this).

_pytest/genscript.py

@@ -1,4 +1,4 @@
-""" generate a single-file self-contained version of pytest """
+""" (deprecated) generate a single-file self-contained version of pytest """
 import os
 import sys
 import pkgutil
@@ -72,6 +72,8 @@ def pytest_cmdline_main(config):
     genscript = config.getvalue("genscript")
     if genscript:
         tw = _pytest.config.create_terminal_writer(config)
+        tw.line("WARNING: usage of genscript is deprecated.",
+                red=True)
         deps =  ['py', 'pluggy', '_pytest', 'pytest']
         if sys.version_info < (2,7):
             deps.append("argparse")

doc/en/goodpractises.txt

@@ -154,7 +154,7 @@ to create a JUnitXML file that Jenkins_ can pick up and generate reports.
 .. _standalone:
 .. _`genscript method`:
 
-Create a pytest standalone script
+(deprecated) Create a pytest standalone script
 -------------------------------------------
 
 If you are a maintainer or application developer and want people

doc/en/test/plugin/genscript.txt

@@ -1,5 +1,5 @@
 
-generate standalone test script to be distributed along with an application.
+(deprecated) generate standalone test script to be distributed along with an application.
 ============================================================================