Add testing configuration.

.coveragerc

@@ -0,0 +1,3 @@
+[run]
+branch = True
+source = pydle

.gitignore

@@ -5,3 +5,6 @@ __pycache__
 *.swo
 
 /docs/_build
+/.coverage
+/.tox
+/*.egg-info

setup.py

@@ -15,7 +15,9 @@ setup(
     requires=['tornado'],
     extras_require={
         'SASL': 'pure-sasl >=0.1.6',                       # for pydle.features.sasl
-        'Generating documentation': 'sphinx_rtd_theme'     # the Sphinx theme we use
+        'Generating documentation': 'sphinx_rtd_theme',    # the Sphinx theme we use
+        'Running tests': 'pytest',                         # collect and run tests
+        'Getting test case coverage': 'pytest-cov'         # get test case coverage
     },
     entry_points={
         'console_scripts': [

tox.ini

@@ -0,0 +1,12 @@
+[tox]
+envlist = py32,py33
+
+[testenv]
+deps =
+    pytest
+    pytest-cov
+commands = py.test --cov pydle --cov-config .coveragerc --cov-report term-missing .
+
+[pytest]
+markers =
+    slow: may take several seconds or more to complete.