Merge pull request #90 from Gallaecio/py34-lxml

Enforce a working lxml version on the Python 3.4 CI environment

Author: kmike

.travis.yml

@@ -5,8 +5,7 @@ python:
 - '3.5'
 - '3.6'
 install:
-- pip install lxml -e .
-- pip install -U codecov pytest-cov
+- pip install -r tests/requirements.txt -e .
 script:
 - py.test --cov-report term --cov=cssselect
 after_success:

tests/requirements.txt

@@ -0,0 +1,5 @@
+codecov
+lxml;python_version!="3.4"
+lxml<=4.3.5;python_version=="3.4"
+pytest
+pytest-cov

tox.ini

@@ -3,9 +3,7 @@ envlist = py27, py34, py35, py36
 
 [testenv]
 deps=
-    lxml
-    pytest<3
-    pytest-cov
+    -r tests/requirements.txt
 
 commands =
     py.test --cov-report term --cov=cssselect