Merge lp:~aaron-whitehouse/duplicity/08-README-TESTING into lp:~duplicity-team/duplicity/0.8-series

[Aaron Whitehouse]

Change README-TESTING to be correct for running individual tests now that we have moved to Pytest.

=== modified file 'README-TESTING'
--- README-TESTING	2017-05-14 07:17:59 +0000
+++ README-TESTING	2019-03-10 13:48:02 +0000
@@ -1,7 +1,7 @@
 # Testing duplicty
 
 ## Introduction
-Duplicitys test concept bases on unit test. 
+Duplicity's test concept bases on unit test.
 All tests are contained in the /testing folder of the main repository. 
 
 As to see in the following sketch, there are several levels of testing duplicity and each can be used directly.
@@ -46,14 +46,17 @@
 from the main duplicity folder. 
 
 You can run specific tests using:
-‘tox -- -s [folder].[folder].[file].[class].[test]‘
+‘tox -- [test filename][::TestClassName::test_method]‘
 For example:
-‘tox -- -s testing.unit.test_selection‘
+‘tox -- testing/unit/test_selection.py‘
 or:
-‘tox -- -s testing.unit.test_selection.MatchingTest.test_tuple_include‘
+‘tox -- testing/unit/test_selection.py::MatchingTest::test_tuple_include‘
 
 You can test against a single environment, e.g.
 ‘tox -e py27‘
+
+Or stack these together, e.g.
+‘tox -e py3 -- testing/unit/test_selection.py::MatchingTest::test_tuple_include‘
 for example if you are working on fixing a bug, but please do a full run-tests
 before submitting a merge request.