fix: before_start

.travis.yml

@@ -120,6 +120,8 @@ before_script:
   - echo "export SPARK_HOME=`pwd`/spark-$SPARK_VER-bin-hadoop$HADOOP_VER" > conf/zeppelin-env.sh
   - echo "export ZEPPELIN_HELIUM_REGISTRY=helium" >> conf/zeppelin-env.sh
   - tail conf/zeppelin-env.sh
+  - export DISPLAY=:99.0 # required to execute e2e tests in chrome
+  - sh -e /etc/init.d/xvfb start # required to execute e2e tests in chrome
 
 script:
   - if [[ -n $TEST_MODULES ]]; then export MODULES=$TEST_MODULES; fi

zeppelin-web/package.json

@@ -19,7 +19,7 @@
     "dev:watch": "grunt watch-webpack-dev",
     "dev": "npm-run-all --parallel dev:server lint:watch dev:watch",
     "test:watch": "karma start karma.conf.js --single-run=false",
-    "pree2e": "webdriver-manager update --gecko false --versions.chrome 2.24",
+    "pree2e": "webdriver-manager update --gecko false",
     "e2e": "protractor protractor.conf.js",
     "pretest": "npm rebuild phantomjs-prebuilt",
     "test": "karma start karma.conf.js"

zeppelin-web/protractor.conf.js

@@ -1,12 +1,9 @@
 exports.config = {
   baseUrl: 'http://localhost:8080/',
   directConnect: true,
-  chromeOnly: true,
+  // chromeOnly: true,
   capabilities: {
     browserName: 'chrome',
-    chromeOptions: {
-      args: ["--headless", 'no-sandbox', "--disable-gpu", "--window-size=800x600"]
-    }
   },
   allScriptsTimeout: 110000,