travis integration test fixes: removed caching of pip from .travis.yml (#431)

update pip and setuptools when running install.sh found in .travis

use xenial

removed trailing dash

only run webrecorder-tests using chrome and firefox

only run webrecorder-tests using pywbtest and chrometest marker expression

.travis.yml

@@ -5,15 +5,12 @@ python:
   - "3.5"
   - "3.6"
 
-os:
+dist: xenial
-  - linux
 
 addons:
+  chrome: stable
+  firefox: latest
   sauce_connect: true
-  apt:
-    packages:
-      # This is required to run new chrome on old trusty
-      - libnss3
 
 env:
   - WR_TEST=no
@@ -22,17 +19,17 @@ env:
 
 cache:
   directories:
-    - $HOME/.cache/pip
     - node_modules
 
-sudo: true
+sudo: required
 
 install:
   - ./.travis/install.sh
 
-before_script:
+before_install:
-  - export DISPLAY=:99.0
+  - "sysctl kernel.unprivileged_userns_clone=1"
-  - sh -e /etc/init.d/xvfb start
+  - "export DISPLAY=:99.0"
+  - "sh -e /etc/init.d/xvfb start"
 
 script:
   - ./.travis/test.sh

.travis/install.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 set -e
 
+pip install --upgrade pip setuptools
 python setup.py -q install
 pip install -r extra_requirements.txt
 pip install coverage pytest-cov coveralls

.travis/test.sh

@@ -6,5 +6,5 @@ if [ "$WR_TEST" = "no" ]; then
     cd karma-tests && make test && cd ..
 else
     cd webrecorder-tests
-    INTRAVIS=1 pytest -m "pywbtest"
+    INTRAVIS=1 pytest -m "pywbtest and chrometest"
 fi