Use GoogleChromeLabs/web-push-testing-service#26

Author: Minishlink

.travis.yml

@@ -11,6 +11,15 @@ cache:
     - node_modules                  # cache modules too
     - $HOME/.composer/cache/files   # and composer packages
 
+addons:
+  apt:
+    update: true
+    sources:
+      - google-chrome
+    packages:
+      - dpkg
+      - google-chrome-stable
+
 matrix:
     allow_failures:
         - php: nightly
@@ -23,16 +32,16 @@ matrix:
 
 env:
   - TRAVIS_NODE_VERSION="stable"
+  - DISPLAY=':99.0'
 
 before_install:
   - nvm install node
 
 install:
-  - npm install github:GoogleChromeLabs/web-push-testing-service -g
+  - npm install github:GoogleChromeLabs/web-push-testing-service#38671ab2e2a1c9857059614064c05c4db8e2e75c -g
 
 before_script:
   - composer install --prefer-source -n
-  - "export DISPLAY=:99.0"
   - "sh -e /etc/init.d/xvfb start || echo \"Unable to start virtual display.\""
   - sleep 3 # give xvfb some time to start