Fixes failing CI tests (#428)

Upgrades tests to Node 8.
Upgrades protractor to the latest version.
Switches from phantomjs to headless chrome.
Adds various new timeout durations to decrease likelihood of failure.
Adds new criteria for test retry, though this needs more confirmation.

Author: bojeil-google

.travis.yml

@@ -1,9 +1,16 @@
 language: node_js
 node_js:
-  - '6'
+  - '8'
 install: npm install
 script: npm test -- --saucelabs
 before_install:
+  - export CHROME_BIN=/usr/bin/google-chrome
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start
+  - sudo apt-get update
+  - sudo apt-get install -y libappindicator1 fonts-liberation
+  - wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
+  - sudo dpkg -i google-chrome*.deb
   - unset _JAVA_OPTIONS
 addons:
   sauce_connect: true

buildtools/run_tests.sh

@@ -48,19 +48,21 @@
 # Travis will run `npm test -- --saucelabs`.
 
 cd "$(dirname $(dirname "$0"))"
+BIN_PATH="./node_modules/.bin"
+PROTRACTOR_BIN_PATH="./node_modules/protractor/bin"
 
 function killServer () {
   if [ "$seleniumStarted" = true ]; then
     echo "Stopping Selenium..."
-    ./node_modules/.bin/webdriver-manager shutdown
-    ./node_modules/.bin/webdriver-manager clean
+    $PROTRACTOR_BIN_PATH/webdriver-manager shutdown
+    $PROTRACTOR_BIN_PATH/webdriver-manager clean
   fi
   echo "Killing HTTP Server..."
   kill $serverPid
 }
 
 # Start the local webserver.
-./node_modules/.bin/gulp serve &
+$BIN_PATH/gulp serve &
 serverPid=$!
 echo "Local HTTP Server started with PID $serverPid."
 
@@ -73,16 +75,18 @@ if [[ $1 = "--saucelabs" ]]; then
   sleep 2
   echo "Using SauceLabs."
   # $2 contains the tunnelIdentifier argument if specified, otherwise is empty.
-  ./node_modules/.bin/protractor protractor.conf.js --saucelabs $2
+  $PROTRACTOR_BIN_PATH/protractor protractor.conf.js --saucelabs $2
 else
-  echo "Using PhantomJS."
+  echo "Using Headless Chrome."
   # Updates Selenium Webdriver.
-  ./node_modules/.bin/webdriver-manager update
+  echo "$PROTRACTOR_BIN_PATH/webdriver-manager update --gecko=false"
+  $PROTRACTOR_BIN_PATH/webdriver-manager update --gecko=false
   # Start Selenium Webdriver.
-  ./node_modules/.bin/webdriver-manager start &>/dev/null &
+  echo "$PROTRACTOR_BIN_PATH/webdriver-manager start &>/dev/null &"
+  $PROTRACTOR_BIN_PATH/webdriver-manager start &>/dev/null &
   seleniumStarted=true
   echo "Selenium Server started."
   # Wait for servers to come up.
   sleep 10
-  ./node_modules/.bin/protractor protractor.conf.js
+  $PROTRACTOR_BIN_PATH/protractor protractor.conf.js
 fi