cypress e2e tests

.travis.yml

@@ -8,6 +8,17 @@ php:
 env:
   - NODE_RELEASE=6.x
 
+addons:
+  apt:
+    packages:
+      # Cypress dependency
+      - libgconf-2-4
+
+cache:
+  directories:
+    # cache Cypress binary
+    - ~/.cache
+
 before_script:
   - composer self-update
   - sudo rm -rf ~/.nvm - curl -sL "https://deb.nodesource.com/setup_${NODE_RELEASE}" | sudo -E bash -
@@ -21,6 +32,7 @@ install:
 script:
   - vendor/bin/phpunit --coverage-clover=coverage.xml
   - npm run lint
+  - npm run test:e2e
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)

package.json

@@ -6,7 +6,8 @@
     "serve": "concurrently \"php -S localhost:8081\" \"vue-cli-service serve\"",
     "build": "vue-cli-service build --no-clean",
     "lint": "vue-cli-service lint --no-fix frontend/",
-    "test:e2e": "vue-cli-service test:e2e",
+    "e2e": "vue-cli-service test:e2e",
+    "test:e2e": "vue-cli-service test:e2e --headless",
     "test:unit": "vue-cli-service test:unit"
   },
   "devDependencies": {