fix/update some docs to work with @pytest.factory instead of pytest_funcarg__ naming.

doc/en/example/costlysetup/conftest.py

@@ -1,10 +1,11 @@
 
-def pytest_funcarg__setup(request):
-    return request.cached_setup(
-        setup=lambda: CostlySetup(),
-        teardown=lambda costlysetup: costlysetup.finalize(),
-        scope="session",
-    )
+import pytest
+
+@pytest.factory("session")
+def setup(testcontext):
+    setup = CostlySetup()
+    testcontext.addfinalizer(setup.finalize)
+    return setup
 
 class CostlySetup:
     def __init__(self):

doc/en/example/multipython.py

@@ -5,29 +5,14 @@ serialization via the pickle module.
 import py, pytest
 
 pythonlist = ['python2.4', 'python2.5', 'python2.6', 'python2.7', 'python2.8']
-
-def pytest_generate_tests(metafunc):
-    # we parametrize all "python1" and "python2" arguments to iterate
-    # over the python interpreters of our list above - the actual
-    # setup and lookup of interpreters in the python1/python2 factories
-    # respectively.
-    for arg in metafunc.funcargnames:
-        if arg in ("python1", "python2"):
-            metafunc.parametrize(arg, pythonlist, indirect=True)
-
-@pytest.mark.parametrize("obj", [42, {}, {1:3},])
-def test_basic_objects(python1, python2, obj):
-    python1.dumps(obj)
-    python2.load_and_is_true("obj == %s" % obj)
-
-def pytest_funcarg__python1(request):
-    tmpdir = request.getfuncargvalue("tmpdir")
+@pytest.factory(params=pythonlist)
+def python1(testcontext, tmpdir):
     picklefile = tmpdir.join("data.pickle")
-    return Python(request.param, picklefile)
+    return Python(testcontext.param, picklefile)
 
-def pytest_funcarg__python2(request):
-    python1 = request.getfuncargvalue("python1")
-    return Python(request.param, python1.picklefile)
+@pytest.factory(params=pythonlist)
+def python2(testcontext, python1):
+    return Python(testcontext.param, python1.picklefile)
 
 class Python:
     def __init__(self, version, picklefile):
@@ -58,3 +43,8 @@ class Python:
         """ % (str(self.picklefile), expression)))
         print (loadfile)
         py.process.cmdexec("%s %s" %(self.pythonpath, loadfile))
+
+@pytest.mark.parametrize("obj", [42, {}, {1:3},])
+def test_basic_objects(python1, python2, obj):
+    python1.dumps(obj)
+    python2.load_and_is_true("obj == %s" % obj)

doc/en/faq.txt

@@ -123,6 +123,11 @@ it is nice to be able to search for ``pytest_funcarg__MYARG`` in
 source code and safely find all factory functions for
 the ``MYARG`` function argument.
 
+.. note::
+
+    With pytest-2.3 you can use the :ref:`@pytest.factory` decorator
+    to mark a function as a funcarg factory.  
+
 .. _`Convention over Configuration`: http://en.wikipedia.org/wiki/Convention_over_Configuration
 
 Can I yield multiple values from a funcarg factory function?
@@ -141,8 +146,12 @@ is not possible:
   policy - in real-world examples some combinations
   often should not run.
 
-Use the `pytest_generate_tests`_ hook to solve both issues
-and implement the `parametrization scheme of your choice`_.
+However, with pytest-2.3 you can use the :ref:`@pytest.factory` decorator
+and specify ``params`` so that all tests depending on the factory-created
+resource will run multiple times with different parameters.
+
+You can also use the `pytest_generate_tests`_ hook to 
+implement the `parametrization scheme of your choice`_.
 
 .. _`pytest_generate_tests`: test/funcargs.html#parametrizing-tests
 .. _`parametrization scheme of your choice`: http://tetamap.wordpress.com/2009/05/13/parametrizing-python-tests-generalized/

doc/en/funcarg_compare.txt

@@ -88,7 +88,7 @@ parametrization, i.e. calling a test multiple times with different value
 sets.  pytest-2.3 introduces a decorator for use on the factory itself::
 
     @pytest.factory(params=["mysql", "pg"])
-    def pytest_funcarg__db(testcontext):
+    def db(testcontext):
         ... # use testcontext.param
 
 Here the factory will be invoked twice (with the respective "mysql" 
@@ -105,7 +105,7 @@ functions/classes were parametrized via
 Of course it's perfectly fine to combine parametrization and scoping::
 
     @pytest.factory(scope="session", params=["mysql", "pg"])
-    def pytest_funcarg__db(testcontext):
+    def db(testcontext):
         if testcontext.param == "mysql":
             db = MySQL()
         elif testcontext.param == "pg":
@@ -137,7 +137,9 @@ aka::
     def pytest_funcarg__db(request):
         ...
 
-It is recommended to use the resource decorator, however.
+
+But it is then not possible to define scoping and parametrization.
+It is thus recommended to use the factory decorator.
 
 
 solving per-session setup / the new @setup marker