Merge pull request #2807 from xuanluong/issue-1442-mention-not--k-help

[doc] Add example of -k 'not test' in help text

Author: nicoddemus

_pytest/mark.py

@@ -91,7 +91,8 @@ def pytest_addoption(parser):
              "where all names are substring-matched against test names "
              "and their parent classes. Example: -k 'test_method or test_"
              "other' matches all test functions and classes whose name "
-             "contains 'test_method' or 'test_other'. "
+             "contains 'test_method' or 'test_other', while -k 'not test_method' "
+             "matches those that don't contain 'test_method' in their names. "
              "Additionally keywords are matched to classes and functions "
              "containing extra names in their 'extra_keyword_matches' set, "
              "as well as functions which have names assigned directly to them."

changelog/1442.doc

@@ -0,0 +1 @@
+In help text of ``-k`` option, add example of using ``not`` to not select certain tests whose names match the provided expression.