Merge branch 'develop'

Author: manfred-kaiser

.gitignore

@@ -1,3 +1,4 @@
+/.tox/
 /build/
 /dist/
 /MANIFEST

sifter/tests/size.py

@@ -49,7 +49,7 @@ def __init__(
             }
         )
         self.validate_tests_size(0)
-        self.comparison_fn = TestSize.COMPARISON_FNS[tagged_args['size'][0]]  # type: ignore
+        self.comparison_fn = self.COMPARISON_FNS[tagged_args['size'][0]]  # type: ignore
         self.comparison_size = tagged_args['size'][1]
 
     def evaluate(self, message: Message, state: EvaluationState) -> Optional[bool]:

tox.ini

@@ -0,0 +1,25 @@
+# tox (https://tox.readthedocs.io/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+[tox]
+envlist = py27
+
+[testenv]
+deps = flake8
+
+commands =
+    # stop the build if there are Python syntax errors or undefined names
+    flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+    # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+    flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
+    python -m unittest discover -v
+
+[flake8]
+exclude =
+    # this is the default list of excludes
+    .svn,CVS,.bzr,.hg,.git,__pycache__,.tox,.eggs,*.egg,
+    # auto-generated files
+    parsetab.py