Add a GitHub action

.github/workflows/tests.yml

@@ -0,0 +1,18 @@
+name: DASH Validator tests
+on: [ push ]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [ 'lts/*' ]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - uses: browser-actions/setup-chrome@v1
+        id: setup-chrome
+      - run: export CHROME_BIN=${{ steps.setup-chrome.outputs.chrome-path }}
+      - run: npm install
+      - run: npm test

.travis.yml

@@ -1,8 +1,8 @@
 sudo: required
-dist: trusty
+dist: jammy
 language: node_js
 node_js:
-- '6'
+- '18'
 before_script:
 - export CHROME_BIN=/usr/bin/google-chrome
 - export DISPLAY=:99.0

karma.conf.js

@@ -40,6 +40,10 @@ module.exports = function (config) {
         Chrome_travis_ci: {
             base: 'Chrome',
             flags: ['--no-sandbox']
+        },
+        Chrome_github_ci: {
+            base: 'ChromeHeadless',
+            flags: ['--no-sandbox']
         }
     },
     coverageReporter: {
@@ -54,5 +58,8 @@ module.exports = function (config) {
   if (process.env.TRAVIS) {
     configuration.browsers = ['Chrome_travis_ci'];
   }
+  if (process.env.GITHUB_ACTION) {
+    configuration.browsers = ['Chrome_github_ci'];
+  }
   config.set(configuration);
 };