Renamed the pdb module and changed unit tests accordingly

CHANGELOG.rst

@@ -36,6 +36,8 @@
   Thanks `@bagerard`_ for reporting (`#1503`_). Thanks to `@davehunt`_ and
   `@tomviner`_ for PR.
 
+* Renamed the pytest ``pdb`` module (plugin) into ``debugging``. 
+
 *
 
 *

_pytest/config.py

@@ -63,7 +63,7 @@ class UsageError(Exception):
 _preinit = []
 
 default_plugins = (
-     "mark main terminal runner python pdb unittest capture skipping "
+     "mark main terminal runner python debugging unittest capture skipping "
      "tmpdir monkeypatch recwarn pastebin helpconfig nose assertion genscript "
      "junitxml resultlog doctest cacheprovider").split()
 

testing/test_pdb.py

@@ -17,7 +17,7 @@ class TestPDB:
         pdblist = []
         def mypdb(*args):
             pdblist.append(args)
-        plugin = request.config.pluginmanager.getplugin('pdb')
+        plugin = request.config.pluginmanager.getplugin('debugging')
         monkeypatch.setattr(plugin, 'post_mortem', mypdb)
         return pdblist